CAT24C256ZD2I-GT3 [ONSEMI]

256 kb I2C CMOS Serial EEPROM; 256 KB I2C CMOS串行EEPROM
CAT24C256ZD2I-GT3
型号: CAT24C256ZD2I-GT3
厂家: ONSEMI    ONSEMI
描述:

256 kb I2C CMOS Serial EEPROM
256 KB I2C CMOS串行EEPROM

可编程只读存储器 电动程控只读存储器 电可擦编程只读存储器
文件: 总14页 (文件大小:178K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
CAT24C256  
256 kb I2C CMOS Serial  
EEPROM  
Description  
The CAT24C256 is a 256 kb Serial CMOS EEPROM, internally  
organized as 32,768 words of 8 bits each.  
http://onsemi.com  
It features a 64byte page write buffer and supports both the  
2
Standard (100 kHz) as well as Fast (400 kHz) I C protocol.  
Write operations can be inhibited by taking the WP pin High (this  
protects the entire memory).  
External address pins make it possible to address up to eight  
CAT24C256 devices on the same bus.  
SOIC8  
W SUFFIX  
CASE 751BD  
TDFN8  
ZD2 SUFFIX  
CASE 511AM  
SOIC8  
X SUFFIX  
CASE 751BE  
Features  
2
Supports Standard and Fast I C Protocol  
1.8 V to 5.5 V Supply Voltage Range  
64Byte Page Write Buffer  
Hardware Write Protection for Entire Memory  
PDIP8  
L SUFFIX  
CASE 646AA CASE 948AL  
TSSOP8  
Y SUFFIX  
2
Schmitt Triggers and Noise Suppression Filters on I C Bus Inputs  
(SCL and SDA)  
Low Power CMOS Technology  
1,000,000 Program/Erase Cycles  
100 Year Data Retention  
Industrial and Extended Temperature Range  
PDIP, SOIC, TSSOP and TDFN 8lead Packages  
This Device is PbFree, Halogen Free/BFR Free, and RoHS  
Compliant  
PIN CONFIGURATION  
1
A
0
A
1
A
2
V
CC  
WP  
SCL  
SDA  
V
SS  
PDIP (L), SOIC (W, X),  
TSSOP (Y), TDFN (ZD2)  
V
CC  
For the location of Pin 1, please consult the  
corresponding package drawing.  
SCL  
PIN FUNCTION  
CAT24C256  
SDA  
A , A , A  
2
1
0
Pin Name  
Function  
Device Address  
WP  
A , A , A  
0
1
2
SDA  
Serial Data  
Serial Clock  
Write Protect  
Power Supply  
Ground  
SCL  
WP  
V
SS  
Figure 1. Functional Symbol  
V
CC  
V
SS  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 14 of this data sheet.  
© Semiconductor Components Industries, LLC, 2009  
1
Publication Order Number:  
November, 2009 Rev. 9  
CAT24C256/D  
CAT24C256  
Table 1. ABSOLUTE MAXIMUM RATINGS  
Parameters  
Ratings  
Units  
°C  
Storage Temperature  
–65 to +150  
–0.5 to +6.5  
Voltage on any Pin with Respect to Ground (Note 1)  
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the  
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect  
device reliability.  
1. The DC input voltage on any pin should not be lower than 0.5 V or higher than V + 0.5 V. During transitions, the voltage on any pin may  
CC  
undershoot to no less than 1.5 V or overshoot to no more than V + 1.5 V, for periods of less than 20 ns.  
CC  
Table 2. RELIABILITY CHARACTERISTICS (Note 2)  
Symbol  
(Note 3)  
Parameter  
Min  
1,000,000  
100  
Units  
Program/Erase Cycles  
Years  
N
Endurance  
END  
T
DR  
Data Retention  
2. These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AECQ100  
and JEDEC test methods.  
3. Page Mode, V = 5 V, 25°C.  
CC  
Table 3. D.C. OPERATING CHARACTERISTICS  
(V = 1.8 V to 5.5 V, T = 40°C to +125°C, unless otherwise specied.)  
CC  
A
Symbol  
Parameter  
Test Conditions  
= 400 kHz  
Min  
Max  
1
Units  
mA  
I
Read Current  
Read, f  
CCR  
SCL  
I
Write Current  
Write, f  
= 400 kHz  
3
mA  
CC  
SCL  
I
SB  
Standby Current  
All I/O Pins at GND or V  
T = 40°C to +85°C  
A
1
mA  
CC  
T = 40°C to +125°C  
A
2
I
L
I/O Pin Leakage  
Pin at GND or V  
T = 40°C to +85°C  
A
1
mA  
CC  
T = 40°C to +125°C  
A
2
V
Input Low Voltage  
Input High Voltage  
Output Low Voltage  
Output Low Voltage  
0.5  
V
x 0.3  
V
V
V
V
IL  
CC  
V
IH  
V
x 0.7  
V
CC  
+ 0.5  
CC  
V
OL1  
V
OL2  
V
V
2.5 V, I = 3.0 mA  
0.4  
0.2  
CC  
OL  
< 2.5 V, I = 1.0 mA  
CC  
OL  
Table 4. PIN IMPEDANCE CHARACTERISTICS  
(V = 1.8 V to 5.5 V, T = 40°C to +125°C, unless otherwise specied.)  
CC  
A
Symbol  
Parameter  
Conditions  
Max  
8
Units  
pF  
C
C
(Note 4)  
(Note 4)  
(Note 5)  
SDA I/O Pin Capacitance  
V
IN  
V
IN  
V
IN  
V
IN  
V
IN  
V
IN  
= 0 V  
= 0 V  
IN  
IN  
Input Capacitance (other pins)  
6
pF  
I
WP Input Current  
(Product Revision C and higher)  
< V , V = 5.5 V  
130  
120  
80  
1
mA  
WP  
IH  
CC  
< V , V = 3.3 V  
IH  
CC  
< V , V = 1.8 V  
IH  
IH  
CC  
> V  
4. These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AECQ100  
and JEDEC test methods.  
5. When not driven, the WP pin is pulled down to GND internally. For improved noise immunity, the internal pulldown is relatively strong;  
therefore the external driver must be able to supply the pulldown current when attempting to drive the input HIGH. To conserve power, as  
the input level exceeds the trip point of the CMOS input buffer (~ 0.5 x V ), the strong pulldown reverts to a weak current source. The  
CC  
variable WP input impedance is available only for Die Rev. C and higher.  
http://onsemi.com  
2
 
CAT24C256  
Table 5. A.C. CHARACTERISTICS (Note 6)  
(V = 1.8 V to 5.5 V, T = 40°C to +125°C, unless otherwise specified.)  
CC  
A
FastPlus (Note 9)  
= 2.5 V 5.5 V  
Standard  
= 1.8 V 5.5 V  
Fast  
= 1.8 V 5.5 V  
V
CC  
V
CC  
V
T
= 405C to +855C  
CC  
A
Min  
Max  
Min  
Max  
Min  
Max  
Symbol  
Parameter  
Units  
kHz  
ms  
F
SCL  
Clock Frequency  
100  
400  
1,000  
t
START Condition Hold Time  
Low Period of SCL Clock  
High Period of SCL Clock  
START Condition Setup Time  
Data In Hold Time  
4
4.7  
4
0.6  
1.3  
0.6  
0.6  
0
0.25  
0.55  
0.25  
0.25  
0
HD:STA  
t
ms  
LOW  
t
ms  
HIGH  
t
4.7  
0
ms  
SU:STA  
HD:DAT  
t
ms  
t
Data In Setup Time  
250  
100  
50  
ns  
SU:DAT  
t
(Note 7)  
SDA and SCL Rise Time  
SDA and SCL Fall Time  
STOP Condition Setup Time  
1,000  
300  
300  
300  
100  
100  
ns  
R
t (Note 7)  
ns  
F
t
4
0.6  
1.3  
0.25  
0.5  
ms  
SU:STO  
t
Bus Free Time Between  
STOP and START  
4.7  
ms  
BUF  
t
SCL Low to Data Out Valid  
Data Out Hold Time  
3.5  
0.9  
0.50  
100  
ms  
ns  
ns  
AA  
t
100  
100  
50  
DH  
T (Note 7)  
Noise Pulse Filtered at SCL  
and SDA Inputs  
100  
100  
i
t
WP Setup Time  
0
0
0
1
ms  
ms  
SU:WP  
t
WP Hold Time  
2.5  
2.5  
HD:WP  
t
Write Cycle Time  
Power-up to Ready Mode  
5
1
5
1
5
1
ms  
ms  
WR  
t
(Notes 7, 8)  
0.1  
PU  
6. Test conditions according to “A.C. Test Conditions” table.  
7. Tested initially and after a design or process change that affects this parameter.  
8. t is the delay between the time V is stable and the device is ready to accept commands.  
PU  
CC  
9. FastPlus (1 MHz) speed class available for product revision “D”, identified by letter “D” marked on top of the package.  
Table 6. A.C. TEST CONDITIONS  
Input Levels  
0.2 x V to 0.8 x V  
CC  
CC  
Input Rise and Fall Times  
Input Reference Levels  
Output Reference Levels  
Output Load  
50 ns  
0.3 x V , 0.7 x V  
CC  
CC  
0.5 x V  
CC  
Current Source: I = 3 mA (V 2.5 V); I = 1 mA (V < 2.5 V); C = 100 pF  
L
CC  
L
CC  
L
http://onsemi.com  
3
 
CAT24C256  
Power-On Reset (POR)  
device pulls down the SDA line to ‘transmit’ a ‘0’ and  
releases it to ‘transmit’ a ‘1’.  
Data transfer may be initiated only when the bus is not  
busy (see A.C. Characteristics).  
The CAT24C256 Die Rev. C incorporates PowerOn  
Reset (POR) circuitry which protects the internal logic  
against powering up in the wrong state.  
The device will power up into Standby mode after V  
exceeds the POR trigger level and will power down into  
During data transfer, the SDA line must remain stable  
while the SCL line is HIGH. An SDA transition while SCL  
is HIGH will be interpreted as a START or STOP condition  
(Figure 2).  
CC  
Reset mode when V drops below the POR trigger level.  
CC  
This bidirectional POR behavior protects the device  
against brownout failure, following a temporary loss of  
power.  
START  
The START condition precedes all commands. It consists  
of a HIGH to LOW transition on SDA while SCL is HIGH.  
The START acts as a ‘wakeup’ call to all receivers. Absent  
a START, a Slave will not respond to commands.  
Pin Description  
SCL: The Serial Clock input pin accepts the Serial Clock  
signal generated by the Master.  
STOP  
SDA: The Serial Data I/O pin receives input data and  
transmits data stored in EEPROM. In transmit mode, this pin  
is open drain. Data is acquired on the positive edge, and is  
delivered on the negative edge of SCL.  
The STOP condition completes all commands. It consists  
of a LOW to HIGH transition on SDA while SCL is HIGH.  
The STOP starts the internal Write cycle (when following a  
Write command) or sends the Slave into standby mode  
(when following a Read command).  
A , A and A : The Address pins accept the device address.  
0
1
2
These pins have onchip pulldown resistors.  
WP: The Write Protect input pin inhibits all write  
operations, when pulled HIGH. This pin has an onchip  
pulldown resistor.  
Device Addressing  
The Master initiates data transfer by creating a START  
condition on the bus. The Master then broadcasts an 8bit  
serial Slave address. The first 4 bits of the Slave address are  
set to 1010, for normal Read/Write operations (Figure 3).  
Functional Description  
The CAT24C256 supports the InterIntegrated Circuit  
The next 3 bits, A , A and A , select one of 8 possible Slave  
2
1
0
2
(I C) Bus data transmission protocol, which defines a device  
devices. The last bit, R/W, specifies whether a Read (1) or  
Write (0) operation is to be performed.  
that sends data to the bus as a transmitter and a device  
receiving data as a receiver. Data flow is controlled by a  
Master device, which generates the serial clock and all  
START and STOP conditions. The CAT24C256 acts as a  
Slave device. Master and Slave alternate as either  
transmitter or receiver. Up to 8 devices may be connected to  
Acknowledge  
After processing the Slave address, the Slave responds  
with an acknowledge (ACK) by pulling down the SDA line  
during the 9th clock cycle (Figure 4). The Slave will also  
acknowledge the byte address and every data byte presented  
in Write mode. In Read mode the Slave shifts out a data byte,  
and then releases the SDA line during the 9th clock cycle. If  
the Master acknowledges the data, then the Slave continues  
transmitting. The Master terminates the session by not  
acknowledging the last data byte (NoACK) and by sending  
a STOP to the Slave. Bus timing is illustrated in Figure 5.  
the bus as determined by the device address inputs A , A ,  
0
1
and A .  
2
I2C Bus Protocol  
2
The I C bus consists of two ‘wires’, SCL and SDA. The  
two wires are connected to the V supply via pullup  
CC  
resistors. Master and Slave devices connect to the 2wire  
bus via their respective SCL and SDA pins. The transmitting  
http://onsemi.com  
4
CAT24C256  
SCL  
SDA  
START  
CONDITION  
STOP  
CONDITION  
Figure 2. Start/Stop Timing  
1
0
1
0
A
2
A
1
A
0
R/W  
DEVICE ADDRESS  
Figure 3. Slave Address Bits  
BUS RELEASE DELAY (TRANSMITTER)  
BUS RELEASE DELAY (RECEIVER)  
SCL FROM  
MASTER  
1
8
9
DATA OUTPUT  
FROM TRANSMITTER  
DATA OUTPUT  
FROM RECEIVER  
ACK SETUP (t  
)
SU:DAT  
START  
ACK DELAY (t  
)
AA  
Figure 4. Acknowledge Timing  
t
t
F
t
R
HIGH  
t
t
LOW  
LOW  
SCL  
t
t
HD:DAT  
SU:STA  
t
t
t
SU:DAT  
SU:STO  
HD:STA  
SDA IN  
t
BUF  
t
AA  
t
DH  
SDA OUT  
Figure 5. Bus Timing  
http://onsemi.com  
5
CAT24C256  
WRITE OPERATIONS  
(within the selected page). The internal Write cycle starts  
immediately following the STOP.  
Byte Write  
In Byte Write mode the Master sends a START, followed  
by Slave address, two byte address and data to be written  
(Figure 6). The Slave acknowledges all 4 bytes, and the  
Master then follows up with a STOP, which in turn starts the  
internal Write operation (Figure 7). During internal Write,  
the Slave will not acknowledge any Read or Write request  
from the Master.  
Acknowledge Polling  
Acknowledge polling can be used to determine if the  
CAT24C256 is busy writing or is ready to accept commands.  
Polling is implemented by interrogating the device with a  
‘Selective Read’ command (see READ OPERATIONS).  
The CAT24C256 will not acknowledge the Slave address,  
as long as internal Write is in progress.  
Page Write  
Hardware Write Protection  
The CAT24C256 contains 32,768 bytes of data, arranged  
in 512 pages of 64 bytes each. A two byte address word,  
following the Slave address, points to the first byte to be  
written. The most significant bit of the address word is ‘don’t  
care’, the next 9 bits identify the page and the last 6 bits  
identify the byte within the page. Up to 64 bytes can be  
written in one Write cycle (Figure 8).  
The internal byte address counter is automatically  
incremented after each data byte is loaded. If the Master  
transmits more than 64 data bytes, then earlier bytes will be  
overwritten by later bytes in a ‘wraparound’ fashion  
With the WP pin held HIGH, the entire memory is  
protected against Write operations. If the WP pin is left  
floating or is grounded, it has no impact on the operation of  
the CAT24C256. The state of the WP pin is strobed on the  
last falling edge of SCL immediately preceding the first data  
byte (Figure 9). If the WP pin is HIGH during the strobe  
interval, the CAT24C256 will not acknowledge the data byte  
and the Write request will be rejected.  
Delivery State  
The CAT24C256 is shipped erased, i.e., all bytes are FFh.  
http://onsemi.com  
6
CAT24C256  
S
T
A
R
T
S
T
BUS ACTIVITY:  
MASTER  
SLAVE  
BYTE ADDRESS  
8
O
P
ADDRESS  
DATA  
A
15  
A  
A A  
7 0  
SDA LINE  
S
P
*
A
C
K
A
C
K
A
C
K
A
C
K
* = Don’t Care Bit  
Figure 6. Byte Write Timing  
SCL  
SDA  
8th Bit  
Byte n  
ACK  
t
WR  
STOP  
START  
CONDITION  
ADDRESS  
CONDITION  
Figure 7. Write Cycle Timing  
S
T
A
R
T
BUS  
ACTIVITY:  
MASTER  
S
T
SLAVE  
ADDRESS  
BYTE ADDRESS  
A A A  
7 0  
O
P
A
15  
DATA  
DATA n  
DATA n+63  
8
S
P
SDA LINE  
*
A
C
K
A
C
K
A
C
K
A
C
K
A
A
A
C
K
C
K
C
K
* = Don’t Care Bit  
Figure 8. Page Write Timing  
ADDRESS  
BYTE  
DATA  
BYTE  
1
1
8
9
8
d
SCL  
SDA  
a
a
0
d
7
7
0
t
SU:WP  
WP  
t
HD:WP  
Figure 9. WP Timing  
http://onsemi.com  
7
CAT24C256  
READ OPERATIONS  
The address counter can be initialized by performing a  
‘dummy’ Write operation (Figure 11). Here the START is  
followed by the Slave address (with the R/W bit set to ‘0’)  
and the desired two byte address. Instead of following up  
with data, the Master then issues a 2nd START, followed by  
the ‘Immediate Address Read’ sequence, as described  
earlier.  
Immediate Address Read  
In standby mode, the CAT24C256 internal address  
counter points to the data byte immediately following the  
last byte accessed by a previous operation. If that ‘previous’  
byte was the last byte in memory, then the address counter  
will point to the 1st memory byte, etc.  
When, following a START, the CAT24C256 is presented  
with a Slave address containing a ‘1’ in the R/W bit position  
(Figure 10), it will acknowledge (ACK) in the 9th clock cycle,  
and will then transmit data being pointed at by the internal  
address counter. The Master can stop further transmission by  
issuing a NoACK, followed by a STOP condition.  
Sequential Read  
If the Master acknowledges the 1st data byte transmitted  
by the CAT24C256, then the device will continue  
transmitting as long as each data byte is acknowledged by  
the Master (Figure 12). If the end of memory is reached  
during sequential Read, then the address counter will  
‘wraparound’ to the beginning of memory, etc. Sequential  
Read works with either ‘Immediate Address Read’ or  
‘Selective Read’, the only difference being the starting byte  
address.  
Selective Read  
The Read operation can also be started at an address  
different from the one stored in the internal address counter.  
S
T
S
T
A
R
T
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
O
P
SDA LINE  
S
P
A
C
K
N
O
A
C
K
DATA  
SCL  
SDA  
8
9
8th Bit  
DATA OUT  
NO ACK  
STOP  
Figure 10. Immediate Address Read Timing  
S
T
A
R
T
S
T
S
T
BUS ACTIVITY:  
MASTER  
A
R
T
BYTE ADDRESS  
A A A  
7 0  
SLAVE  
SLAVE  
O
P
ADDRESS  
ADDRESS  
A
15  
DATA  
8
S
S
P
SDA LINE  
*
N
O
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
* = Don’t Care Bit  
Figure 11. Selective Read Timing  
S
T
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
O
P
DATA n  
DATA n+1  
DATA n+2  
DATA n+x  
P
SDA LINE  
N
O
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
Figure 12. Sequential Read Timing  
http://onsemi.com  
8
 
CAT24C256  
PACKAGE DIMENSIONS  
PDIP8, 300 mils  
CASE 646AA01  
ISSUE A  
SYMBOL  
MIN  
NOM  
MAX  
A
5.33  
A1  
A2  
b
0.38  
2.92  
0.36  
3.30  
0.46  
1.52  
0.25  
9.27  
4.95  
0.56  
1.78  
0.36  
10.16  
b2  
c
1.14  
0.20  
9.02  
E1  
D
E
E1  
e
7.62  
6.10  
7.87  
6.35  
8.25  
7.11  
2.54 BSC  
7.87  
2.92  
10.92  
3.80  
eB  
L
PIN # 1  
IDENTIFICATION  
3.30  
D
TOP VIEW  
E
A2  
A1  
A
c
b2  
L
eB  
e
b
SIDE VIEW  
END VIEW  
Notes:  
(1) All dimensions are in millimeters.  
(2) Complies with JEDEC MS-001.  
http://onsemi.com  
9
CAT24C256  
PACKAGE DIMENSIONS  
SOIC 8, 150 mils  
CASE 751BD01  
ISSUE O  
SYMBOL  
MIN  
NOM  
MAX  
1.35  
A
A1  
b
1.75  
0.25  
0.51  
0.25  
0.10  
0.33  
0.19  
c
E1  
E
D
E
E1  
e
4.80  
5.80  
3.80  
5.00  
6.20  
4.00  
1.27 BSC  
h
0.25  
0.40  
0º  
0.50  
1.27  
8º  
L
PIN # 1  
IDENTIFICATION  
θ
TOP VIEW  
D
h
A1  
θ
A
c
e
b
L
SIDE VIEW  
END VIEW  
Notes:  
(1) All dimensions are in millimeters. Angles in degrees.  
(2) Complies with JEDEC MS-012.  
http://onsemi.com  
10  
CAT24C256  
PACKAGE DIMENSIONS  
TSSOP8, 4.4x3  
CASE 948AL01  
ISSUE O  
b
SYMBOL  
MIN  
NOM  
MAX  
A
A1  
A2  
b
1.20  
0.15  
1.05  
0.30  
0.20  
3.10  
6.50  
4.50  
0.05  
0.80  
0.19  
0.09  
2.90  
6.30  
4.30  
0.90  
E
c
E1  
D
3.00  
6.40  
E
E1  
e
4.40  
0.65 BSC  
1.00 REF  
0.60  
L
L1  
0.50  
0.75  
0º  
8º  
θ
e
TOP VIEW  
D
c
A2  
A
q1  
A1  
L1  
L
SIDE VIEW  
END VIEW  
Notes:  
(1) All dimensions are in millimeters. Angles in degrees.  
(2) Complies with JEDEC MO-153.  
http://onsemi.com  
11  
CAT24C256  
PACKAGE DIMENSIONS  
TDFN8, 3x4.9  
CASE 511AM01  
ISSUE A  
D
A
DETAIL A  
DAP SIZE  
2.6 x 3.3mm  
E
E2  
PIN #1  
IDENTIFICATION  
A1  
PIN #1 IDENTIFICATION  
D2  
TOP VIEW  
SIDE VIEW  
BOTTOM VIEW  
SYMBOL  
MIN  
NOM  
MAX  
A2  
A
A
0.70  
0.00  
0.45  
0.75  
0.02  
0.55  
0.80  
0.05  
0.65  
A1  
A2  
A1  
A3  
FRONT VIEW  
A3  
b
0.20 REF  
0.30  
0.25  
2.90  
0.90  
4.80  
0.90  
0.35  
3.10  
1.10  
5.00  
1.10  
b
D
3.00  
D2  
E
1.00  
4.90  
L
E2  
e
1.00  
0.65 TYP  
0.60  
e
L
0.50  
0.70  
DETAIL A  
Notes:  
(1) All dimensions are in millimeters.  
(2) Complies with JEDEC MO-229.  
http://onsemi.com  
12  
CAT24C256  
PACKAGE DIMENSIONS  
SOIC8, 208 mils  
CASE 751BE01  
ISSUE O  
SYMBOL  
MIN  
NOM  
MAX  
A
A1  
b
2.03  
0.25  
0.48  
0.25  
5.33  
8.26  
5.38  
0.05  
0.36  
0.19  
5.13  
7.75  
5.13  
c
E
E1  
D
E
E1  
e
1.27 BSC  
0.51  
0.76  
L
0º  
8º  
θ
PIN#1 IDENTIFICATION  
TOP VIEW  
D
A
q
e
b
L
c
A1  
SIDE VIEW  
END VIEW  
Notes:  
(1) All dimensions are in millimeters. Angles in degrees.  
(2) Complies with EIAJ EDR-7320.  
http://onsemi.com  
13  
CAT24C256  
Example of Ordering Information (Note 12)  
Prefix  
Device #  
Suffix  
CAT  
24C256  
W
I
G  
T3  
Lead Finish  
Temperature Range  
Company ID  
(Optional)  
G: NiPdAu  
Blank: MatteTin (Note 13)  
I = Industrial (40°C to +85°C)  
E = Extended (40°C to +125°C)  
Product Number  
24C256  
Tape & Reel (Note 17)  
T: Tape & Reel  
2: 2,000 / Reel (Notes 13, 14)  
3: 3,000 / Reel  
Package  
L: PDIP  
W: SOIC, JEDEC  
X: SOIC, EIAJ (Note )  
Y: TSSOP  
ZD2: TDFN (3 x 4.9 mm) (Note 14)  
ORDERING INFORMATION  
Orderable Part Numbers  
CAT24C256LIG  
CAT24C256LEG  
CAT24C256WIGT3  
CAT24C256WEGT3  
CAT24C256XET2  
CAT24C256XIT2  
CAT24C256YIGT3  
CAT24C256YEGT3  
CAT24C256ZD2EGT2* (Note 16)  
CAT24C256ZD2IGT2* (Note 16)  
10.All packages are RoHS-compliant (Lead-free, Halogen-free).  
11. The standard lead finish is NiPdAu.  
12.The device used in the above example is a CAT24C256WIGT3 (SOICJEDEC, Industrial Temperature, NiPdAu, Tape & Reel, 3,000/Reel).  
13.For SOIC, EIAJ (X) package the standard lead finish is MatteTin. This package is available in 2,000 pcs/reel, i.e., CAT24C256XIT2.  
14.The TDFN 3 x 4.9 mm (ZD2) package is available in 2,000 pcs/reel, i.e., CAT24C256ZD2IGT2.  
15.For additional package and temperature options, please contact your nearest ON Semiconductor Sales office.  
16.Part number is not exactly the same as the “Example of Ordering Information” shown above. For part numbers marked with * there are NO  
hyphens in the orderable part numbers.  
17.For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging  
Specifications Brochure, BRD8011/D.  
2
ON Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.  
ON Semiconductor and  
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice  
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability  
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.  
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All  
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights  
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications  
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should  
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,  
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death  
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal  
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.  
PUBLICATION ORDERING INFORMATION  
LITERATURE FULFILLMENT:  
N. American Technical Support: 8002829855 Toll Free  
USA/Canada  
Europe, Middle East and Africa Technical Support:  
Phone: 421 33 790 2910  
Japan Customer Focus Center  
Phone: 81357733850  
ON Semiconductor Website: www.onsemi.com  
Order Literature: http://www.onsemi.com/orderlit  
Literature Distribution Center for ON Semiconductor  
P.O. Box 5163, Denver, Colorado 80217 USA  
Phone: 3036752175 or 8003443860 Toll Free USA/Canada  
Fax: 3036752176 or 8003443867 Toll Free USA/Canada  
Email: orderlit@onsemi.com  
For additional information, please contact your local  
Sales Representative  
CAT24C256/D  
 

相关型号:

CAT24C256ZD2I-T2

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C256ZD2I-T2

EEPROM, 32KX8, Serial, CMOS, 3 X 4.90 MM, GREEN, MO-229, TDFN-8
CATALYST

CAT24C256ZD2I-T3

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C256ZD2IGT2

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C256ZE-GR3

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C256ZE-GT3

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C256ZI-GT3

256 kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C32

32-Kb I2C CMOS Serial EEPROM
CATALYST

CAT24C32

32-Kb I2C CMOS Serial EEPROM
ONSEMI

CAT24C321

Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer
CATALYST

CAT24C321J-25TE13

Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDSO8, SOIC-8
CATALYST

CAT24C321J-28TE13

Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer
CATALYST