23LC512-E/SN [MICROCHIP]

512Kbit SPI Serial SRAM with SDI and SQI Interface;
23LC512-E/SN
型号: 23LC512-E/SN
厂家: MICROCHIP    MICROCHIP
描述:

512Kbit SPI Serial SRAM with SDI and SQI Interface

静态存储器
文件: 总32页 (文件大小:643K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
23A512/23LC512  
512Kbit SPI Serial SRAM with SDI and SQI Interface  
Device Selection Table  
Part  
Number  
Temp.  
Ranges  
Dual I/O  
(SDI)  
Quad I/O  
(SQI)  
Max. Clock  
Frequency  
VCC Range  
Packages  
23A512  
23LC512  
1.7-2.2V  
2.5-5.5V  
I, E  
I, E  
Yes  
Yes  
Yes  
Yes  
20 MHz(1)  
20 MHz(1)  
SN, ST, P  
SN, ST, P  
Note 1: 16 MHz for E-temp.  
Features:  
Description:  
• SPI-Compatible Bus Interface:  
- 20 MHz Clock rate  
The Microchip Technology Inc. 23A512/23LC512 are  
512Kbit Serial SRAM devices. The memory is  
accessed via a simple Serial Peripheral Interface (SPI)  
compatible serial bus. The bus signals required are a  
clock input (SCK) plus separate data in (SI) and data  
out (SO) lines. Access to the device is controlled  
through a Chip Select (CS) input. Additionally, SDI  
(Serial Dual Interface) and SQI (Serial Quad Interface)  
is supported if your application needs faster data rates.  
- SPI/SDI/SQI mode  
• Low-Power CMOS Technology:  
- Read Current: 3 mA at 5.5V, 20 MHz  
- Standby Current: 4 A at +85°C  
• Unlimited Read and Write Cycles  
• Zero Write Time  
This device also supports unlimited reads and writes to  
the memory array.  
• 64K x 8-bit Organization:  
- 32-byte page  
The 23A512/23LC512 is available in standard  
packages including 8-lead SOIC, PDIP and advanced  
8-lead TSSOP.  
• Byte, Page and Sequential mode for Reads and  
Writes  
• High Reliability  
Temperature Ranges Supported:  
Package Types (not to scale)  
- Industrial (I):  
-40C to +85C  
-40C to +125C  
- Automotive (E):  
• RoHS Compliant  
• 8-Lead SOIC, TSSOP and PDIP Packages  
SOIC/TSSOP/PDIP  
CS  
1
8
VCC  
Pin Function Table  
SO/SIO1  
SIO2  
2
3
4
7
6
5
HOLD/SIO3  
SCK  
Name  
Function  
CS  
Chip Select Input  
VSS  
SI/SIO0  
SO/SIO1  
SIO2  
Serial Output/SDI/SQI Pin  
SQI Pin  
VSS  
Ground  
SI/SIO0  
SCK  
Serial Input/SDI/SQI Pin  
Serial Clock  
HOLD/SIO3 Hold/SQI Pin  
Power Supply  
VCC  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 1  
23A512/23LC512  
1.0  
ELECTRICAL CHARACTERISTICS  
(†)  
Absolute Maximum Ratings  
VCC.............................................................................................................................................................................6.5V  
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +0.3V  
Storage temperature ...............................................................................................................................-65°C to +150°C  
Ambient temperature under bias.............................................................................................................-40°C to +125°C  
NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the  
device. This is a stress rating only and functional operation of the device at those or any other conditions above those  
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an  
extended period of time may affect device reliability.  
TABLE 1-1:  
DC CHARACTERISTICS  
Industrial (I):  
Automotive (E): TA = -40°C to +125°C  
TA = -40°C to +85°C  
DC CHARACTERISTICS  
Param.  
No.  
Sym.  
Characteristic  
Min.  
Typ.  
Max.  
Units  
Test Conditions  
D001  
VCC  
Supply voltage  
1.7  
2.5  
2.2  
5.5  
V
23A512  
23LC512  
D002  
D003  
D004  
D005  
D006  
D007  
D008  
D009  
VIH  
VIL  
VOL  
VOH  
ILI  
High-level input  
voltage  
0.7 VCC  
VCC + 0.3  
V
V
Low-level input  
voltage  
-0.3  
0.2 VCC  
0.1 VCC  
23A512  
23LC512  
Low-level output  
voltage  
0.2  
V
IOL = 1 mA  
High-level output  
voltage  
VCC - 0.5  
V
IOH = -400 A  
Input leakage  
current  
±1  
±1  
A  
A  
CS = VCC, VIN = VSS OR VCC  
CS = VCC, VOUT = VSS OR VCC  
ILO  
Output leakage  
current  
ICC Read Operating current  
1
3
10  
10  
mA FCLK = 20 MHz; SO = O, 2.2V  
mA FCLK = 20 MHz; SO = O, 5.5V  
ICCS  
Standby current  
1
4
4
A CS = VCC = 2.2V, Inputs tied to  
VCC or VSS, I-Temp  
A CS = VCC = 2.2V, Inputs tied to  
VCC or VSS, E-Temp  
A CS = VCC = 5.5V, Inputs tied to  
VCC or VSS, I-Temp  
A CS = VCC = 5.5V, Inputs tied to  
VCC or VSS, E-Temp  
12  
10  
20  
D010  
D011  
CINT  
VDR  
Input capacitance  
7
pF VCC = 5.0V, f = 1 MHz, TA = 25°C  
(Note 1)  
RAM data retention  
voltage  
1.0  
V
(Note 2)  
Note 1: This parameter is periodically sampled and not 100% tested.  
2: This is the limit to which VCC can be lowered without losing RAM data. This parameter is periodically  
sampled and not 100% tested.  
3: Typical measurements taken at room temperature.  
DS20005155B-page 2  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
TABLE 1-2:  
AC CHARACTERISTICS  
Industrial (I):  
Automotive (E): TA = -40°C to +125°C  
TA = -40°C to +85°C  
AC CHARACTERISTICS  
Param.  
Sym.  
Characteristic  
Min.  
Max.  
Units  
Test Conditions  
No.  
1
2
FCLK Clock frequency  
20  
16  
MHz I-Temp  
E-Temp  
I-Temp  
TCSS CS setup time  
25  
32  
ns  
E-Temp  
3
4
TCSH CS hold time  
50  
ns  
ns  
I-Temp  
E-Temp  
TCSD CS disable time  
25  
32  
5
6
7
8
9
Tsu  
THD  
TR  
Data setup time  
Data hold time  
CLK rise time  
CLK fall time  
10  
10  
20  
20  
ns  
ns  
ns  
ns  
ns  
(Note 1)  
(Note 1)  
TF  
THI  
Clock high time  
I-Temp  
E-Temp  
25  
32  
10  
11  
12  
TLO  
Clock low time  
I-Temp  
E-Temp  
25  
32  
ns  
ns  
ns  
TCLD Clock delay time  
I-Temp  
E-Temp  
25  
32  
TV  
Output valid from clock low  
I-Temp  
E-Temp  
25  
32  
13  
14  
THO  
TDIS  
Output hold time  
0
20  
50  
ns  
ns  
ns  
ns  
ns  
ns  
(Note 1)  
Output disable time  
10  
10  
10  
15  
16  
17  
18  
THS  
THH  
THZ  
THV  
HOLD setup time  
HOLD hold time  
HOLD low to output High-Z  
HOLD high to output valid  
Note 1: This parameter is periodically sampled and not 100% tested.  
TABLE 1-3:  
AC TEST CONDITIONS  
AC Waveform:  
Input pulse level  
Input rise/fall time  
CL = 30 pF  
0.1 VCC to 0.9 VCC  
5 ns  
Timing Measurement Reference Level:  
Input  
0.5 VCC  
0.5 VCC  
Output  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 3  
23A512/23LC512  
FIGURE 1-1: HOLD TIMING  
CS  
16  
16  
15  
15  
SCK  
17  
18  
High-Impedance  
Don’t Care  
n
SO  
n + 2  
n + 2  
n + 1  
n
n - 1  
5
n
n + 1  
n
n - 1  
SI  
HOLD  
FIGURE 1-2: SERIAL INPUT TIMING (SPI MODE)  
4
CS  
2
11  
7
3
8
SCK  
5
6
SI  
MSB in  
LSB in  
High-Impedance  
SO  
FIGURE 1-3: SERIAL OUTPUT TIMING (SPI MODE)  
CS  
3
9
10  
SCK  
12  
14  
LSB out  
13  
MSB out  
SO  
SI  
Don’t Care  
DS20005155B-page 4  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
If operating in Sequential mode, the data stored in the  
memory at the next address can be read sequentially  
by continuing to provide clock pulses. The internal  
Address Pointer is automatically incremented to the  
next higher address after each byte of data is shifted  
out. When the highest address is reached (FFFFh),  
the address counter rolls over to address 0000h,  
allowing the read cycle to be continued indefinitely.  
The read operation is terminated by raising the CS  
pin.  
2.0  
2.1  
FUNCTIONAL DESCRIPTION  
Principles of Operation  
The 23A512/23LC512 is an 512Kbit Serial SRAM  
designed to interface directly with the Serial Peripheral  
Interface (SPI) port of many of today’s popular  
microcontroller families, including Microchip’s PIC®  
microcontrollers. It may also interface with microcon-  
trollers that do not have a built-in SPI port by using  
discrete I/O lines programmed properly in firmware to  
match the SPI protocol. In addition, the 23A512/  
23LC512 is also capable of operating in SDI/SQI high  
speed SPI mode.  
2.4  
Write Sequence  
Prior to any attempt to write data to the 23A512/  
23LC512, the device must be selected by bringing CS  
low.  
The 23A512/23LC512 contains an 8-bit instruction reg-  
ister. The device is accessed via the SI pin, with data  
being clocked in on the rising edge of SCK. The CS pin  
must be low for the entire operation.  
Once the device is selected, the Write command can  
be started by issuing a WRITE instruction, followed by  
the 16-bit address, and then the data to be written. A  
write is terminated by the CS being brought high.  
Table 2-1 contains a list of the possible instruction  
bytes and format for device operation. All instructions,  
addresses and data are transferred MSB first, LSB last.  
If operating in Page mode, after the initial data byte is  
shifted in, additional bytes can be shifted into the  
device. The Address Pointer is automatically  
incremented. This operation can continue for the entire  
page (32 bytes) before data will start to be overwritten.  
2.2  
Modes of Operation  
The 23x512 has three modes of operation that are  
selected by setting bits 7 and 6 in the MODE register.  
The modes of operation are Byte, Page and Burst.  
If operating in Sequential mode, after the initial data  
byte is shifted in, additional bytes can be clocked into  
the device. The internal Address Pointer is automati-  
cally incremented. When the Address Pointer reaches  
the highest address (FFFFh), the address counter rolls  
over to (0000h). This allows the operation to continue  
indefinitely, however, previous data will be overwritten.  
Byte Operation – is selected when bits 7 and 6 in the  
MODE register are set to 00. In this mode, the read/  
write operations are limited to only one byte. The  
Command followed by the 16-bit address is clocked into  
the device and the data to/from the device is transferred  
on the next eight clocks (Figure 2-1, Figure 2-2).  
Page Operation – is selected when bits 7 and 6 in the  
MODE register are set to 10. The 23x512 has 2048  
pages of 32 bytes. In this mode, the read and write oper-  
ations are limited to within the addressed page (the  
address is automatically incremented internally). If the  
data being read or written reaches the page boundary,  
then the internal address counter will increment to the  
start of the page (Figure 2-3, Figure 2-4).  
Sequential Operation – is selected when bits 7 and 6  
in the MODE register are set to 01. Sequential opera-  
tion allows the entire array to be written to and read  
from. The internal address counter is automatically  
incremented and page boundaries are ignored. When  
the internal address counter reaches the end of the  
array, the address counter will roll over to 0x0000  
(Figure 2-5, Figure 2-6).  
2.3  
Read Sequence  
The device is selected by pulling CS low. The 8-bit  
READinstruction is transmitted to the 23A512/23LC512  
followed by the 16-bit address. After the correct READ  
instruction and address are sent, the data stored in the  
memory at the selected address is shifted out on the  
SO pin.  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 5  
23A512/23LC512  
TABLE 2-1:  
INSTRUCTION SET  
Hex  
Code  
Instruction Name Instruction Format  
Description  
READ  
WRITE  
EDIO  
EQIO  
RSTIO  
RDMR  
WRMR  
0000 0011  
0000 0010  
0011 1011  
0011 1000  
1111 1111  
0000 0101  
0000 0001  
0x03  
0x02  
0x3B  
0x38  
0xFF  
0x05  
0x01  
Read data from memory array beginning at selected address  
Write data to memory array beginning at selected address  
Enter Dual I/O access  
Enter Quad I/O access  
Reset Dual and Quad I/O access  
Read Mode Register  
Write Mode Register  
FIGURE 2-1: BYTE READ SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
SCK  
SI  
Instruction  
16-bit Address  
0 0 0 0 0 0 1 1 15 14 13 12  
2
1
0
Data Out  
High-Impedance  
7
6
5
4
3
2
1
0
SO  
FIGURE 2-2: BYTE WRITE SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
SCK  
SI  
Instruction  
16-bit Address Data Byte  
0 0 0 0 0 0 1 0 15 14 13 12  
2
1
0
7
6
5
4
3
2
1
0
High-Impedance  
SO  
DS20005155B-page 6  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
FIGURE 2-3: PAGE READ SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
SCK  
SI  
Instruction  
0 0 0 0 0 0 1 1 15 14 13 12  
Page X, Word Y  
16-bit Address  
2
1
0
Page X, Word Y  
High-Impedance  
SO  
7
6
5
4
3
2
1
0
CS  
32 33 34 35 36 37 38 39  
SCK  
SI  
Page X, Word Y+1  
Page X, Word 31  
Page X, Word 0  
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
SO  
FIGURE 2-4:  
PAGE WRITE SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
Page X, Word Y  
SCK  
16-bit Address  
Instruction  
0 0 0 0 0 0 1 0  
2
1
0
7
6
5
4
3
2
1
0
15 14 13 12  
Page X, Word Y  
SI  
CS  
SCK  
SI  
32 33 34 35 36 37 38 39  
Page X, Word Y+1  
Page X, Word 31  
Page X, Word 0  
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
2012-2013 Microchip Technology Inc.  
DS20005155B-page 7  
23A512/23LC512  
FIGURE 2-5:  
SEQUENTIAL READ SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
SCK  
Instruction  
16-bit Address  
0 0 0 0 0 0 1 1 15 14 13 12  
2
1
0
SI  
Page X, Word Y  
7
6
5
4
3
2
1
0
SO  
CS  
SCK  
SI  
Page X, Word 31  
Page X+1, Word 0  
Page X+1, Word 1  
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
SO  
CS  
SCK  
SI  
Page X+1, Word 31  
Page X+n, Word 1  
Page X+n, Word 31  
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
SO  
DS20005155B-page 8  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
FIGURE 2-6:  
SEQUENTIAL WRITE SEQUENCE (SPI MODE)  
CS  
0
1
2
3
4
5
6
7
8
9 10 11  
21 22 23 24 25 26 27 28 29 30 31  
SCK  
Instruction  
0 0 0 0 0 0 1 0 15 14 13 12  
16-bit Address Data Byte 1  
2
1
0
7
6
5
4
3
2
1
0
SI  
CS  
32 33 34 35 36 37 38 39  
Data Byte 2  
41 42 43 44 45 46 47  
Data Byte 3  
40  
7
SCK  
SI  
Data Byte n  
7
6
5
4
3
2
1
0
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
2012-2013 Microchip Technology Inc.  
DS20005155B-page 9  
23A512/23LC512  
The mode bits indicate the operating mode of the  
SRAM. The possible modes of operation are:  
2.5  
Read Mode Register Instruction  
(RDMR)  
0 0= Byte mode  
The Read Mode Register instruction (RDMR) provides  
access to the MODE register. The MODE register may  
be read at any time. The MODE register is formatted as  
follows:  
1 0= Page mode  
0 1= Sequential mode (default operation)  
1 1= Reserved  
Bits 0 through 5 are reserved and should always be set  
to ‘0’.  
TABLE 2-2:  
MODE REGISTER  
7
6
5
4
3
2
1
0
0
See Figure 2-7 for the RDMRtiming sequence.  
W/R  
W/R  
MODE MODE 0 0 0 0 0  
W/R = writable/readable  
FIGURE 2-7: READ MODE REGISTER TIMING SEQUENCE (RDMR)  
CS  
0
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
SCK  
SI  
Instruction  
0
0
0
0
0
1
0
1
Data from MODE Register  
High-Impedance  
7
6
5
4
3
2
1
0
SO  
DS20005155B-page 10  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
2.6  
Write Mode Register Instruction  
(WRMR)  
The Write Mode Register instruction (WRMR) allows the  
user to write to the bits in the MODE register as shown  
in Table 2-2. This allows for setting of the Device  
Operating mode. Several of the bits in the MODE  
register must be cleared to ‘0’. See Figure 2-8 for the  
WRMRtiming sequence.  
FIGURE 2-8: WRITE MODE REGISTER TIMING SEQUENCE (WRMR)  
CS  
0
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
1
15  
0
SCK  
SI  
Instruction  
Data to MODE Register  
7
6
5
4
3
2
0
0
0
0
0
0
0
1
High-Impedance  
SO  
2.7  
Power-On State  
The 23A512/23LC512 powers on in the following state:  
• The device is in low-power Standby mode  
(CS= 1)  
• A high-to-low-level transition on CS is required to  
enter active state  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 11  
23A512/23LC512  
3.6  
Serial Clock (SCK)  
3.0  
PIN DESCRIPTIONS  
The SCK is used to synchronize the communication  
between a master and the 23A512/23LC512. Instruc-  
tions, addresses or data present on the SI pin are  
latched on the rising edge of the clock input, while data  
on the SO pin is updated after the falling edge of the  
clock input.  
The descriptions of the pins are listed in Table 3-1.  
TABLE 3-1:  
Name  
PIN FUNCTION TABLE  
SOIC/  
PDIP  
Function  
TSSOP  
3.7  
Hold Function (HOLD)  
CS  
1
2
Chip Select Input  
The HOLD pin is used to suspend transmission to the  
23A512/23LC512 while in the middle of a serial  
sequence without having to re-transmit the entire  
sequence over again. It must be held high any time  
this function is not being used. Once the device is  
selected and a serial sequence is underway, the  
HOLD pin may be pulled low to pause further serial  
communication without resetting the serial sequence.  
SO/SIO1  
Serial Data Output/SDI/SQI  
Pin  
SIO2  
3
4
5
6
7
8
SQI Pin  
VSS  
Ground  
SI/SIO0  
SCK  
Serial Data Input/SDI/SQI Pin  
Serial Clock Input  
Hold/SQI Pin  
HOLD/SIO3  
VCC  
Power Supply  
The HOLD pin should be brought low while SCK is  
low, otherwise the HOLD function will not be invoked  
until the next SCK high-to-low transition. The 23A512/  
23LC512 must remain selected during this sequence.  
The SI and SCK levels are “don’t cares” during the  
time the device is paused and any transitions on these  
pins will be ignored. To resume serial communication,  
HOLD should be brought high while the SCK pin is  
low, otherwise serial communication will not be  
3.1  
Chip Select (CS)  
A low level on this pin selects the device. A high level  
deselects the device and forces it into Standby mode.  
When the device is deselected, SO goes to the high-  
impedance state, allowing multiple parts to share the  
same SPI bus. After power-up, a low level on CS is  
required, prior to any sequence being initiated.  
3.2  
Serial Output (SO)  
resumed until the next SCK high-to-low transition.  
The SO pin is used to transfer data out of the 23A512/  
23LC512. During a read cycle, data is shifted out on  
this pin after the falling edge of the serial clock.  
The SO line will tri-state immediately upon a high-to  
low transition of the HOLD pin, and will begin  
outputting again immediately upon a subsequent low-  
to-high transition of the HOLD pin, independent of the  
state of SCK.  
3.3  
Serial Input (SI)  
The SI pin is used to transfer data into the device. It  
receives instructions, addresses, and data. Data is  
latched on the rising edge of the serial clock.  
Hold functionality is not available when operating in  
SQI mode.  
3.4  
Serial Dual Interface Pins(SIO0,  
SIO1)  
The SIO0 and SIO1 pins are used for SDI mode of  
operation. Functionality of these I/O pins is shared with  
SO and SI.  
3.5  
Serial Quad Interface Pins (SIO0 –  
SIO3)  
The SIO0 through SIO3 pins are used for SQI mode of  
operation. Because of the shared functionality of these  
pins the HOLD feature is not available when using SQI  
mode.  
DS20005155B-page 12  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
3.8  
SPI/SDI and SQI Pin Designations  
SPI Mode:  
CS  
1
8
Vcc  
SO  
NC  
2
3
7
6
HOLD  
SCK  
Vss  
4
5
SI  
SDI Mode:  
CS  
1
8
Vcc  
SIO1  
NC  
2
3
7
6
HOLD  
SCK  
Vss  
4
5
SIO0  
SQI Mode:  
CS  
1
8
Vcc  
SIO1  
SIO2  
2
3
7
6
SIO3  
SCK  
Vss  
4
5
SIO0  
Note:  
Pin 3 should not be left floating when  
using SPI/SDI mode.  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 13  
23A512/23LC512  
4.1  
Dual Interface Mode  
4.0  
DUAL AND QUAD SERIAL  
MODE  
The 23A512/23LC512 supports Serial Dual Input (SDI)  
mode of operation. To enter SDI mode the EDIO com-  
mand must be clocked in (Figure 4-1). It should be  
noted that if the MCU resets before the SRAM, the user  
will need to determine the serial mode of operation of  
the SRAM and reset it accordingly. Byte read and write  
sequence in SDI mode is shown in Figure 4-2 and  
Figure 4-3.  
The 23A512/23LC512 also supports SDI (Serial Dual)  
and SQI (Serial Quad) mode of operation when used  
with compatible master devices. As a convention for  
SDI mode of operation, two bits are entered per clock  
using the SIO0 and SIO1 pins. Bits are clocked MSB  
first.  
For SQI mode of operation, four bits of data are entered  
per clock, or one nibble per clock. The nibbles are  
clocked MSB first.  
FIGURE 4-1: ENTER SDI MODE (EDIO) FROM SPI MODE  
CS  
0
1
2
3
4
5
6
7
SCK  
0
0
1
1
1
0
1
1
SI  
High-Impedance  
SO  
4.2  
Quad Interface Mode  
In addition to the Serial Dual Interface (SDI) mode of  
operation Serial Quad Interface (SQI) is also  
supported. In this mode the HOLD functionality is not  
available. To enter SQI mode the EQIO command must  
be clocked in (Figure 4-4).  
DS20005155B-page 14  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
FIGURE 4-2:  
BYTE READ MODE SDI  
CS  
0
1
2
3
4
5
18 19  
9 10 11 12 13 14 15 16 17  
6
7
8
SCK  
0
1
0
0
0
0
1
6
7
4
2
14 12 10  
8
6
4
2
3
0
SIO0  
Dummy Byte  
Data Out  
Instruction  
16-Bit Address  
0
0
1
5
3
15 13 11 9  
7
5
1
SIO1  
Note:  
Note:  
Page and Sequential mode are similar in that additional bytes can be clocked out before CS is brought high.  
The first byte read after the address will be a dummy byte.  
FIGURE 4-3:  
BYTE WRITE MODE SDI  
CS  
5
0
1
2
3
4
6
7
9 10 11 12  
15  
13 14  
8
SCK  
SIO0  
0
0
0
0
0
0
1
14 12 10  
8
6
4
2
3
0
6
7
4
2
Data In  
Instruction  
16-Bit Address  
0
0
1
15 13 11 9  
7
5
1
5
3
SIO1  
Note:  
Page and Sequential mode are similar in that additional bytes can be clocked in before CS is brought high.  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 15  
23A512/23LC512  
FIGURE 4-4:  
ENTER SQI MODE (EQIO) FROM SPI MODE  
CS  
SCK  
SI  
0
1
2
3
4
5
6
7
0
0
1
1
1
0
0
0
High-Impedance  
SO  
4.3  
Exit SDI or SQI Mode  
To exit from SDI mode, the RSTIO command must be  
issued. The command must be entered in the current  
device configuration, either SDI or SQI, see Figure 4-7  
and Figure 4-8.  
FIGURE 4-5:  
BYTE READ MODE SQI  
CS  
4
0
1
2
3
5
6
7
9
8
SCK  
SIO0  
0
1
0
1
12  
8
9
4
5
6
7
0
1
2
3
4
5
6
SIO1  
0
0
1
0
13  
SIO2  
SIO3  
2
14 10  
7
3
0
15 11  
0
16-Bit Address  
Instruction  
Dummy Byte  
Data Out  
Note:  
Note:  
Page and Sequential mode is similar in that additional bytes can be clocked out before CS is brought high.  
The first byte read after the address will be a dummy byte.  
DS20005155B-page 16  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
FIGURE 4-6:  
CS  
BYTE WRITE MODE SQI  
4
0
1
2
3
5
6
7
9
8
SCK  
SIO0  
0
1
0
1
2
4
5
6
0
1
12  
8
9
4
5
6
7
0
1
2
3
4
5
6
SIO1  
0
1
13  
SIO2  
SIO3  
0 0  
2
14 10  
7
3
7
3
0
15 11  
0
16-Bit Address  
Instruction  
Data N  
Data N+1  
Note:  
Page and Sequential mode are similar in that additional bytes can be clocked out before CS is brought high.  
FIGURE 4-7:  
RESET SDI MODE (RSTIO) – FROM SDI MODE  
CS  
3
2
0
1
SCK  
1 1 1 1  
SIO0  
SIO1  
1 1 1 1  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 17  
23A512/23LC512  
FIGURE 4-8:  
RESET SDI/SQI MODE (RSTIO) – FROM SQI MODE  
CS  
0
1
SCK  
SIO0  
SIO1  
SIO2  
SIO3  
1
1
1
1
1
1
1
1
DS20005155B-page 18  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
5.0  
5.1  
PACKAGING INFORMATION  
Package Marking Information  
Example:  
23A512  
8-Lead PDIP  
XXXXXXXX  
T/XXXNNN  
I/P  
e
3
1L7  
1343  
YYWW  
8-Lead SOIC (3.90 mm)  
Example:  
23A512I  
XXXXXXXT  
XXXXYYWW  
SN  
1343  
e
3
NNN  
1L7  
Example:  
3LAI  
8-Lead TSSOP  
XXXT  
YYWW  
1343  
1L7  
NNN  
1st Line Marking Codes  
Part Number  
PDIP  
SOIC  
TSSOP  
23A512  
23LC512  
Note:  
23A512  
23LC512  
23A512  
3AAT  
3LAT  
23LC512T  
T = Temperature grade (I, E)  
Legend: XX...X Part number or part number code  
T
Temperature (I, E)  
Y
Year code (last digit of calendar year)  
Year code (last 2 digits of calendar year)  
Week code (week of January 1 is week ‘01’)  
YY  
WW  
NNN  
Alphanumeric traceability code (2 characters for small packages)  
Pb-free JEDEC® designator for Matte Tin (Sn)  
e
3
Note: For very small packages with no room for the Pb-free JEDEC® designator  
, the marking will only appear on the outer carton or reel label.  
e
3
Note: In the event the full Microchip part number cannot be marked on one line, it will  
be carried over to the next line, thus limiting the number of available  
characters for customer-specific information.  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 19  
23A512/23LC512  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆꢏꢐꢁꢂꢋꢐꢃꢆꢑꢇꢒꢆꢓꢆꢔꢕꢕꢆꢖꢋꢈꢆꢗꢘꢅꢙꢆꢚꢇꢍꢏꢇꢛ  
ꢜꢘꢊꢃꢝ ꢬꢕꢐꢅꢏꢘꢌꢅꢑꢕꢇꢏꢅꢖꢈꢐꢐꢌꢄꢏꢅꢡꢉꢖꢭꢉꢜꢌꢅꢋꢐꢉꢗꢃꢄꢜꢇꢓꢅꢡꢊꢌꢉꢇꢌꢅꢇꢌꢌꢅꢏꢘꢌꢅꢢꢃꢖꢐꢕꢖꢘꢃꢡꢅꢂꢉꢖꢭꢉꢜꢃꢄꢜꢅꢛꢡꢌꢖꢃꢎꢃꢖꢉꢏꢃꢕꢄꢅꢊꢕꢖꢉꢏꢌꢋꢅꢉꢏꢅ  
ꢘꢏꢏꢡꢪꢮꢮꢗꢗꢗꢁꢑꢃꢖꢐꢕꢖꢘꢃꢡꢁꢖꢕꢑꢮꢡꢉꢖꢭꢉꢜꢃꢄꢜ  
N
NOTE 1  
E1  
3
1
2
D
E
A2  
A
L
A1  
c
e
eB  
b1  
b
ꢯꢄꢃꢏꢇ  
ꢰꢱꢝꢲꢠꢛ  
ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢅꢳꢃꢑꢃꢏꢇ  
ꢢꢰꢱ  
ꢱꢴꢢ  
ꢁꢀꢣꢣꢅꢩꢛꢝ  
ꢁꢀꢞꢣ  
ꢁꢞꢀꢣ  
ꢁꢙꢨꢣ  
ꢁꢞꢺꢨ  
ꢁꢀꢞꢣ  
ꢁꢣꢀꢣ  
ꢁꢣꢺꢣ  
ꢁꢣꢀꢶ  
ꢢꢦꢵ  
ꢱꢈꢑꢔꢌꢐꢅꢕꢎꢅꢂꢃꢄꢇ  
ꢂꢃꢏꢖꢘ  
ꢡꢅꢏꢕꢅꢛꢌꢉꢏꢃꢄꢜꢅꢂꢊꢉꢄꢌ  
ꢢꢕꢊꢋꢌꢋꢅꢂꢉꢖꢭꢉꢜꢌꢅꢫꢘꢃꢖꢭꢄꢌꢇꢇ  
ꢩꢉꢇꢌꢅꢏꢕꢅꢛꢌꢉꢏꢃꢄꢜꢅꢂꢊꢉꢄꢌ  
ꢛꢘꢕꢈꢊꢋꢌꢐꢅꢏꢕꢅꢛꢘꢕꢈꢊꢋꢌꢐꢅꢹꢃꢋꢏꢘ  
ꢢꢕꢊꢋꢌꢋꢅꢂꢉꢖꢭꢉꢜꢌꢅꢹꢃꢋꢏꢘ  
ꢴꢆꢌꢐꢉꢊꢊꢅꢳꢌꢄꢜꢏꢘ  
ꢦꢙ  
ꢦꢀ  
ꢠꢀ  
ꢔꢀ  
ꢌꢩ  
ꢁꢙꢀꢣ  
ꢁꢀꢸꢨ  
ꢁꢀꢀꢨ  
ꢁꢣꢀꢨ  
ꢁꢙꢸꢣ  
ꢁꢙꢥꢣ  
ꢁꢞꢥꢶ  
ꢁꢀꢀꢨ  
ꢁꢣꢣꢶ  
ꢁꢣꢥꢣ  
ꢁꢣꢀꢥ  
ꢁꢞꢙꢨ  
ꢁꢙꢶꢣ  
ꢁꢥꢣꢣ  
ꢁꢀꢨꢣ  
ꢁꢣꢀꢨ  
ꢁꢣꢻꢣ  
ꢁꢣꢙꢙ  
ꢁꢥꢞꢣ  
ꢫꢃꢡꢅꢏꢕꢅꢛꢌꢉꢏꢃꢄꢜꢅꢂꢊꢉꢄꢌ  
ꢳꢌꢉꢋꢅꢫꢘꢃꢖꢭꢄꢌꢇꢇ  
ꢯꢡꢡꢌꢐꢅꢳꢌꢉꢋꢅꢹꢃꢋꢏꢘ  
ꢳꢕꢗꢌꢐꢅꢳꢌꢉꢋꢅꢹꢃꢋꢏꢘ  
ꢴꢆꢌꢐꢉꢊꢊꢅꢼꢕꢗꢅꢛꢡꢉꢖꢃꢄꢜꢅꢅꢚ  
ꢜꢘꢊꢃꢉꢝ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅꢆꢃꢇꢈꢉꢊꢅꢃꢄꢋꢌꢍꢅꢎꢌꢉꢏꢈꢐꢌꢅꢑꢉꢒꢅꢆꢉꢐꢒꢓꢅꢔꢈꢏꢅꢑꢈꢇꢏꢅꢔꢌꢅꢊꢕꢖꢉꢏꢌꢋꢅꢗꢃꢏꢘꢅꢏꢘꢌꢅꢘꢉꢏꢖꢘꢌꢋꢅꢉꢐꢌꢉꢁ  
ꢙꢁ ꢚꢅꢛꢃꢜꢄꢃꢎꢃꢖꢉꢄꢏꢅꢝꢘꢉꢐꢉꢖꢏꢌꢐꢃꢇꢏꢃꢖꢁ  
ꢞꢁ ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢇꢅꢟꢅꢉꢄꢋꢅꢠꢀꢅꢋꢕꢅꢄꢕꢏꢅꢃꢄꢖꢊꢈꢋꢌꢅꢑꢕꢊꢋꢅꢎꢊꢉꢇꢘꢅꢕꢐꢅꢡꢐꢕꢏꢐꢈꢇꢃꢕꢄꢇꢁꢅꢢꢕꢊꢋꢅꢎꢊꢉꢇꢘꢅꢕꢐꢅꢡꢐꢕꢏꢐꢈꢇꢃꢕꢄꢇꢅꢇꢘꢉꢊꢊꢅꢄꢕꢏꢅꢌꢍꢖꢌꢌꢋꢅꢁꢣꢀꢣꢤꢅꢡꢌꢐꢅꢇꢃꢋꢌꢁ  
ꢥꢁ ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢃꢄꢜꢅꢉꢄꢋꢅꢏꢕꢊꢌꢐꢉꢄꢖꢃꢄꢜꢅꢡꢌꢐꢅꢦꢛꢢꢠꢅꢧꢀꢥꢁꢨꢢꢁ  
ꢩꢛꢝꢪꢅꢩꢉꢇꢃꢖꢅꢟꢃꢑꢌꢄꢇꢃꢕꢄꢁꢅꢫꢘꢌꢕꢐꢌꢏꢃꢖꢉꢊꢊꢒꢅꢌꢍꢉꢖꢏꢅꢆꢉꢊꢈꢌꢅꢇꢘꢕꢗꢄꢅꢗꢃꢏꢘꢕꢈꢏꢅꢏꢕꢊꢌꢐꢉꢄꢖꢌꢇꢁ  
ꢢꢃꢖꢐꢕꢖꢘꢃꢡ ꢖꢘꢄꢕꢊꢕꢜꢒ ꢟꢐꢉꢗꢃꢄꢜ ꢝꢣꢥꢽꢣꢀꢶꢩ  
DS20005155B-page 20  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
Note: For the most current package drawings, please see the Microchip Packaging Specification located at  
http://www.microchip.com/packaging  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 21  
23A512/23LC512  
Note: For the most current package drawings, please see the Microchip Packaging Specification located at  
http://www.microchip.com/packaging  
DS20005155B-page 22  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢞꢖꢄꢈꢈꢆꢟꢎꢊꢈꢋꢐꢃꢆꢑꢞꢜꢒꢆꢓꢆꢜꢄꢠꢠꢘꢡꢢꢆꢔꢣꢤꢕꢆꢖꢖꢆꢗꢘꢅꢙꢆꢚꢞꢟꢏꢥꢛ  
ꢜꢘꢊꢃꢝ ꢬꢕꢐꢅꢏꢘꢌꢅꢑꢕꢇꢏꢅꢖꢈꢐꢐꢌꢄꢏꢅꢡꢉꢖꢭꢉꢜꢌꢅꢋꢐꢉꢗꢃꢄꢜꢇꢓꢅꢡꢊꢌꢉꢇꢌꢅꢇꢌꢌꢅꢏꢘꢌꢅꢢꢃꢖꢐꢕꢖꢘꢃꢡꢅꢂꢉꢖꢭꢉꢜꢃꢄꢜꢅꢛꢡꢌꢖꢃꢎꢃꢖꢉꢏꢃꢕꢄꢅꢊꢕꢖꢉꢏꢌꢋꢅꢉꢏꢅ  
ꢘꢏꢏꢡꢪꢮꢮꢗꢗꢗꢁꢑꢃꢖꢐꢕꢖꢘꢃꢡꢁꢖꢕꢑꢮꢡꢉꢖꢭꢉꢜꢃꢄꢜ  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 23  
23A512/23LC512  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢦꢧꢋꢐꢆꢞꢧꢠꢋꢐꢨꢆꢞꢖꢄꢈꢈꢆꢟꢎꢊꢈꢋꢐꢃꢆꢑꢞꢦꢒꢆꢓꢆꢩꢣꢩꢆꢖꢖꢆꢗꢘꢅꢙꢆꢚꢦꢞꢞꢟꢇꢛ  
ꢜꢘꢊꢃꢝ ꢬꢕꢐꢅꢏꢘꢌꢅꢑꢕꢇꢏꢅꢖꢈꢐꢐꢌꢄꢏꢅꢡꢉꢖꢭꢉꢜꢌꢅꢋꢐꢉꢗꢃꢄꢜꢇꢓꢅꢡꢊꢌꢉꢇꢌꢅꢇꢌꢌꢅꢏꢘꢌꢅꢢꢃꢖꢐꢕꢖꢘꢃꢡꢅꢂꢉꢖꢭꢉꢜꢃꢄꢜꢅꢛꢡꢌꢖꢃꢎꢃꢖꢉꢏꢃꢕꢄꢅꢊꢕꢖꢉꢏꢌꢋꢅꢉꢏꢅ  
ꢘꢏꢏꢡꢪꢮꢮꢗꢗꢗꢁꢑꢃꢖꢐꢕꢖꢘꢃꢡꢁꢖꢕꢑꢮꢡꢉꢖꢭꢉꢜꢃꢄꢜ  
D
N
E
E1  
NOTE 1  
1
2
b
e
c
φ
A
A2  
A1  
L
L1  
ꢯꢄꢃꢏꢇ  
ꢢꢰꢳꢳꢰꢢꢠꢫꢠꢼꢛ  
ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢅꢳꢃꢑꢃꢏꢇ  
ꢢꢰꢱ  
ꢱꢴꢢ  
ꢢꢦꢵ  
ꢱꢈꢑꢔꢌꢐꢅꢕꢎꢅꢂꢃꢄꢇ  
ꢂꢃꢏꢖꢘ  
ꢣꢁꢺꢨꢅꢩꢛꢝ  
ꢴꢆꢌꢐꢉꢊꢊꢅꢲꢌꢃꢜꢘꢏ  
ꢢꢕꢊꢋꢌꢋꢅꢂꢉꢖꢭꢉꢜꢌꢅꢫꢘꢃꢖꢭꢄꢌꢇꢇ  
ꢛꢏꢉꢄꢋꢕꢎꢎꢅ  
ꢣꢁꢶꢣ  
ꢣꢁꢣꢨ  
ꢀꢁꢣꢣ  
ꢀꢁꢙꢣ  
ꢀꢁꢣꢨ  
ꢣꢁꢀꢨ  
ꢦꢙ  
ꢦꢀ  
ꢴꢆꢌꢐꢉꢊꢊꢅꢹꢃꢋꢏꢘ  
ꢺꢁꢥꢣꢅꢩꢛꢝ  
ꢢꢕꢊꢋꢌꢋꢅꢂꢉꢖꢭꢉꢜꢌꢅꢹꢃꢋꢏꢘ  
ꢢꢕꢊꢋꢌꢋꢅꢂꢉꢖꢭꢉꢜꢌꢅꢳꢌꢄꢜꢏꢘ  
ꢬꢕꢕꢏꢅꢳꢌꢄꢜꢏꢘ  
ꢠꢀ  
ꢥꢁꢞꢣ  
ꢙꢁꢸꢣ  
ꢣꢁꢥꢨ  
ꢥꢁꢥꢣ  
ꢞꢁꢣꢣ  
ꢣꢁꢺꢣ  
ꢥꢁꢨꢣ  
ꢞꢁꢀꢣ  
ꢣꢁꢻꢨ  
ꢬꢕꢕꢏꢡꢐꢃꢄꢏ  
ꢬꢕꢕꢏꢅꢦꢄꢜꢊꢌ  
ꢳꢌꢉꢋꢅꢫꢘꢃꢖꢭꢄꢌꢇꢇ  
ꢳꢌꢉꢋꢅꢹꢃꢋꢏꢘ  
ꢳꢀ  
ꢀꢁꢣꢣꢅꢼꢠꢬ  
ꢣꢾ  
ꢣꢁꢣꢸ  
ꢣꢁꢀꢸ  
ꢶꢾ  
ꢣꢁꢙꢣ  
ꢣꢁꢞꢣ  
ꢜꢘꢊꢃꢉꢝ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅꢆꢃꢇꢈꢉꢊꢅꢃꢄꢋꢌꢍꢅꢎꢌꢉꢏꢈꢐꢌꢅꢑꢉꢒꢅꢆꢉꢐꢒꢓꢅꢔꢈꢏꢅꢑꢈꢇꢏꢅꢔꢌꢅꢊꢕꢖꢉꢏꢌꢋꢅꢗꢃꢏꢘꢃꢄꢅꢏꢘꢌꢅꢘꢉꢏꢖꢘꢌꢋꢅꢉꢐꢌꢉꢁ  
ꢙꢁ ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢇꢅꢟꢅꢉꢄꢋꢅꢠꢀꢅꢋꢕꢅꢄꢕꢏꢅꢃꢄꢖꢊꢈꢋꢌꢅꢑꢕꢊꢋꢅꢎꢊꢉꢇꢘꢅꢕꢐꢅꢡꢐꢕꢏꢐꢈꢇꢃꢕꢄꢇꢁꢅꢢꢕꢊꢋꢅꢎꢊꢉꢇꢘꢅꢕꢐꢅꢡꢐꢕꢏꢐꢈꢇꢃꢕꢄꢇꢅꢇꢘꢉꢊꢊꢅꢄꢕꢏꢅꢌꢍꢖꢌꢌꢋꢅꢣꢁꢀꢨꢅꢑꢑꢅꢡꢌꢐꢅꢇꢃꢋꢌꢁ  
ꢞꢁ ꢟꢃꢑꢌꢄꢇꢃꢕꢄꢃꢄꢜꢅꢉꢄꢋꢅꢏꢕꢊꢌꢐꢉꢄꢖꢃꢄꢜꢅꢡꢌꢐꢅꢦꢛꢢꢠꢅꢧꢀꢥꢁꢨꢢꢁ  
ꢩꢛꢝꢪ ꢩꢉꢇꢃꢖꢅꢟꢃꢑꢌꢄꢇꢃꢕꢄꢁꢅꢫꢘꢌꢕꢐꢌꢏꢃꢖꢉꢊꢊꢒꢅꢌꢍꢉꢖꢏꢅꢆꢉꢊꢈꢌꢅꢇꢘꢕꢗꢄꢅꢗꢃꢏꢘꢕꢈꢏꢅꢏꢕꢊꢌꢐꢉꢄꢖꢌꢇꢁ  
ꢼꢠꢬꢪ ꢼꢌꢎꢌꢐꢌꢄꢖꢌꢅꢟꢃꢑꢌꢄꢇꢃꢕꢄꢓꢅꢈꢇꢈꢉꢊꢊꢒꢅꢗꢃꢏꢘꢕꢈꢏꢅꢏꢕꢊꢌꢐꢉꢄꢖꢌꢓꢅꢎꢕꢐꢅꢃꢄꢎꢕꢐꢑꢉꢏꢃꢕꢄꢅꢡꢈꢐꢡꢕꢇꢌꢇꢅꢕꢄꢊꢒꢁ  
ꢢꢃꢖꢐꢕꢖꢘꢃꢡ ꢖꢘꢄꢕꢊꢕꢜꢒ ꢟꢐꢉꢗꢃꢄꢜ ꢝꢣꢥꢽꢣꢶꢺꢩ  
DS20005155B-page 24  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
Note: For the most current package drawings, please see the Microchip Packaging Specification located at  
http://www.microchip.com/packaging  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 25  
23A512/23LC512  
APPENDIX A: REVISION HISTORY  
Revision A (September 2012)  
Initial release.  
Revision B (November 2013)  
Added E-Temp specs.  
DS20005155B-page 26  
2012-2013 Microchip Technology Inc.  
23A512/23LC512  
THE MICROCHIP WEB SITE  
CUSTOMER SUPPORT  
Microchip provides online support via our WWW site at  
www.microchip.com. This web site is used as a means  
to make files and information easily available to  
customers. Accessible by using your favorite Internet  
browser, the web site contains the following  
information:  
Users of Microchip products can receive assistance  
through several channels:  
• Distributor or Representative  
• Local Sales Office  
• Field Application Engineer (FAE)  
Technical Support  
Product Support – Data sheets and errata,  
application notes and sample programs, design  
resources, user’s guides and hardware support  
documents, latest software releases and archived  
software  
Customers  
should  
contact  
their  
distributor,  
representative or Field Application Engineer (FAE) for  
support. Local sales offices are also available to help  
customers. A listing of sales offices and locations is  
included in the back of this document.  
General Technical Support – Frequently Asked  
Questions (FAQ), technical support requests,  
online discussion groups, Microchip consultant  
program member listing  
Technical support is available through the web site  
at: http://microchip.com/support  
Business of Microchip – Product selector and  
ordering guides, latest Microchip press releases,  
listing of seminars and events, listings of  
Microchip sales offices, distributors and factory  
representatives  
CUSTOMER CHANGE NOTIFICATION  
SERVICE  
Microchip’s customer notification service helps keep  
customers current on Microchip products. Subscribers  
will receive e-mail notification whenever there are  
changes, updates, revisions or errata related to a  
specified product family or development tool of interest.  
To register, access the Microchip web site at  
www.microchip.com. Under “Support”, click on  
“Customer Change Notification” and follow the  
registration instructions.  
2013 Microchip Technology Inc.  
DS20005155B-page 27  
23A512/23LC512  
NOTES:  
DS20005155B-page 28  
2013 Microchip Technology Inc.  
23A512/23LC512  
PRODUCT IDENTIFICATION SYSTEM  
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. Not all possible ordering options  
are shown below..  
PART NO.  
Device  
X
/XX  
X
Examples:  
Tape & Reel  
Package  
Temp Range  
a)  
23A512-I/ST = 512 Kbit, 1.7-2.2V Serial  
SRAM, Industrial temp., TSSOP package  
b)  
23LC512T-I/SN = 512 Kbit, 2.5-5.5V Serial  
SRAM, Industrial temp., Tape & Reel, SOIC  
package  
Device:  
23A512 =  
23LC512 =  
512 Kbit, 1.7 - 2.2V, SPI Serial SRAM  
512 Kbit, 2.5 - 5.5V, SPI Serial SRAM  
c)  
d)  
e)  
23LC512-I/P = 512 Kbit, 2.5-5.5V Serial  
SRAM, Industrial temp., PDIP package  
23A512-E/ST  
= 512 Kbit, 1.7-2.2V Serial  
Tape & Reel: Blank  
=
=
Standard packaging (tube)  
Tape & Reel  
SRAM, Extended temp., TSSOP package  
23LC512T-E/SN = 512 Kbit, 2.5-5.5V Serial  
SRAM, Extended temp., Tape & Reel, SOIC  
package  
T
Temperature  
Range:  
I
E
=
=
-40C to +85C  
-40C to +125C  
f)  
23LC512-E/P  
= 512 Kbit, 2.5-5.5V Serial  
SRAM, Extended temp., PDIP package  
Package:  
SN  
ST  
P
=
=
=
Plastic SOIC (3.90 mm body), 8-lead  
Plastic TSSOP (4.4 mm body), 8-lead  
Plastic PDIP (300 mil body), 8-lead  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 29  
23A512/23LC512  
NOTES:  
DS20005155B-page 30  
2012-2013 Microchip Technology Inc.  
Note the following details of the code protection feature on Microchip devices:  
Microchip products meet the specification contained in their particular Microchip Data Sheet.  
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the  
intended manner and under normal conditions.  
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our  
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data  
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.  
Microchip is willing to work with the customer who is concerned about the integrity of their code.  
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not  
mean that we are guaranteeing the product as “unbreakable.”  
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our  
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts  
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.  
Information contained in this publication regarding device  
applications and the like is provided only for your convenience  
and may be superseded by updates. It is your responsibility to  
ensure that your application meets with your specifications.  
MICROCHIP MAKES NO REPRESENTATIONS OR  
WARRANTIES OF ANY KIND WHETHER EXPRESS OR  
IMPLIED, WRITTEN OR ORAL, STATUTORY OR  
OTHERWISE, RELATED TO THE INFORMATION,  
INCLUDING BUT NOT LIMITED TO ITS CONDITION,  
QUALITY, PERFORMANCE, MERCHANTABILITY OR  
FITNESS FOR PURPOSE. Microchip disclaims all liability  
arising from this information and its use. Use of Microchip  
devices in life support and/or safety applications is entirely at  
the buyer’s risk, and the buyer agrees to defend, indemnify and  
hold harmless Microchip from any and all damages, claims,  
suits, or expenses resulting from such use. No licenses are  
conveyed, implicitly or otherwise, under any Microchip  
intellectual property rights.  
Trademarks  
The Microchip name and logo, the Microchip logo, dsPIC,  
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,  
PICSTART, PIC logo, rfPIC, SST, SST Logo, SuperFlash  
and UNI/O are registered trademarks of Microchip Technology  
Incorporated in the U.S.A. and other countries.  
32  
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,  
MTP, SEEVAL and The Embedded Control Solutions  
Company are registered trademarks of Microchip Technology  
Incorporated in the U.S.A.  
Silicon Storage Technology is a registered trademark of  
Microchip Technology Inc. in other countries.  
Analog-for-the-Digital Age, Application Maestro, BodyCom,  
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,  
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,  
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial  
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB  
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code  
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,  
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,  
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA  
and Z-Scale are trademarks of Microchip Technology  
Incorporated in the U.S.A. and other countries.  
SQTP is a service mark of Microchip Technology Incorporated  
in the U.S.A.  
GestIC and ULPP are registered trademarks of Microchip  
Technology Germany II GmbH & Co. KG, a subsidiary of  
Microchip Technology Inc., in other countries.  
All other trademarks mentioned herein are property of their  
respective companies.  
© 2012-2013, Microchip Technology Incorporated, Printed in  
the U.S.A., All Rights Reserved.  
Printed on recycled paper.  
ISBN: 9781620776179  
QUALITY MANAGEMENT SYSTEM  
CERTIFIED BY DNV  
Microchip received ISO/TS-16949:2009 certification for its worldwide  
headquarters, design and wafer fabrication facilities in Chandler and  
Tempe, Arizona; Gresham, Oregon and design centers in California  
and India. The Company’s quality system processes and procedures  
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping  
devices, Serial EEPROMs, microperipherals, nonvolatile memory and  
analog products. In addition, Microchip’s quality system for the design  
and manufacture of development systems is ISO 9001:2000 certified.  
== ISO/TS 16949 ==  
2012-2013 Microchip Technology Inc.  
DS20005155B-page 31  
Worldwide Sales and Service  
AMERICAS  
ASIA/PACIFIC  
ASIA/PACIFIC  
EUROPE  
Corporate Office  
2355 West Chandler Blvd.  
Chandler, AZ 85224-6199  
Tel: 480-792-7200  
Fax: 480-792-7277  
Technical Support:  
http://www.microchip.com/  
support  
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Suites 3707-14, 37th Floor  
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Tel: 852-2401-1200  
Fax: 852-2401-3431  
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Tel: 91-80-3090-4444  
Fax: 91-80-3090-4123  
Austria - Wels  
Tel: 43-7242-2244-39  
Fax: 43-7242-2244-393  
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Tel: 45-4450-2828  
Fax: 45-4485-2829  
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Tel: 91-11-4160-8631  
Fax: 91-11-4160-8632  
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Tel: 33-1-69-53-63-20  
Fax: 33-1-69-30-90-79  
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Tel: 91-20-3019-1500  
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Tel: 61-2-9868-6733  
Fax: 61-2-9868-6755  
Web Address:  
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Tel: 81-6-6152-7160  
Fax: 81-6-6152-9310  
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Tel: 49-2129-3766400  
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Tel: 49-89-627-144-0  
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Fax: 82-53-744-4302  
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Fax: 82-2-558-5932 or  
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Tel: 39-049-7625286  
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Fax: 630-285-0075  
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Fax: 852-2401-3431  
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Tel: 216-447-0464  
Fax: 216-447-0643  
Poland - Warsaw  
Tel: 48-22-3325737  
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Tel: 60-4-227-8870  
Fax: 60-4-227-4068  
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Tel: 34-91-708-08-90  
Fax: 34-91-708-08-91  
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Fax: 972-818-2924  
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Tel: 63-2-634-9065  
Fax: 63-2-634-9069  
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Tel: 86-532-8502-7355  
Fax: 86-532-8502-7205  
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Tel: 46-8-5090-4654  
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Tel: 65-6334-8870  
Fax: 65-6334-8850  
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Tel: 248-848-4000  
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Tel: 86-21-5407-5533  
Fax: 86-21-5407-5066  
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Fax: 44-118-921-5820  
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Fax: 86-24-2334-2393  
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Fax: 86-755-8203-1760  
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Fax: 886-2-2508-0102  
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Fax: 86-756-3210049  
10/28/13  
DS20005155B-page 32  
2012-2013 Microchip Technology Inc.  

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