X24C01PI-3.5 [XICOR]
Serial E2PROM; 串行E2PROM
| 型号： | X24C01PI-3.5 |
| 厂家： | 
XICOR INC. |
| 描述： | Serial E2PROM |
| 文件： | 总14页 (文件大小：58K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary Information
1K
X24C01
128 x 8 Bit
Serial E2PROM
FEATURES
DESCRIPTION
2
• 2.7V to 5.5V Power Supply
• Low Power CMOS
—Active Current Less Than 1 mA
—Standby Current Less Than 50 µA
• Internally Organized 128 x 8
• 2 Wire Serial Interface
—Bidirectional Data Transfer Protocol
• Four Byte Page Write Mode
• Self Timed Write Cycle
—Typical Write Cycle Time of 5 ms
• High Reliability
The X24C01 is a CMOS 1024 bit serial E PROM,
internally organized as 128 x 8. The X24C01 features a
serialinterfaceandsoftwareprotocolallowingoperation
on a simple two wire bus.
2
Xicor E PROMs are designed and tested for applica-
tions requiring extended endurance. Inherent data re-
tention is greater than 100 years.
—Endurance: 100,000 Cycles
—Data Retention: 100 Years
• 8-Pin Mini-DIP, 8-PIN MSOP, and 8-PIN SOIC
Packages
FUNCTIONAL DIAGRAM
(8) V
(4) V
CC
H.V. GENERATION
START CYCLE
SS
TIMING
& CONTROL
START
STOP
(5) SDA
LOGIC
CONTROL
LOGIC
2
E PROM
XDEC
32 X 32
LOAD
INC
(6) SCL
WORD
ADDRESS
COUNTER
R/W
YDEC
8
CK
D
OUT
PIN
DATA REGISTER
D
OUT
ACK
3837 FHD F01
© Xicor, 1991 Patents Pending
3837-1.2 7/28/97 T1/C0/D0 SH
Characteristics subject to change without notice
1
X24C01
PIN DESCRIPTIONS
Serial Clock (SCL)
PIN CONFIGURATION
The SCL input is used to clock all data into and out of the
device.
DIP
Serial Data (SDA)
NC
NC
NC
1
2
3
4
8
7
6
5
V
CC
SDA is a bidirectional pin used to transfer data into and
out of the device. It is an open drain output and may be
wire-ORed with any number of open drain or open
collector outputs.
NC
X24C01
SCL
SDA
V
SS
3837 FHD F02
An open drain output requires the use of a pull-up
resistor. For selecting typical values, refer to the Guide-
lines for Calculating Typical Values of Bus Pull-Up
Resistors graph.
SOIC/MSOP
NC
NC
NC
1
2
3
4
8
V
CC
NC
PIN NAMES
7
6
5
X24C01
SCL
SDA
Symbol
Description
No Connect
Ground
V
SS
NC
V
SS
V
CC
Supply Voltage
Serial Data
Serial Clock
3837 FHD F03
SDA
SCL
3837 PGM T01
EQUIVALENT A.C. LOAD CIRCUIT
A.C. CONDITIONS OF TEST
5V
Input Pulse Levels
V
x 0.1 to V x 0.9
CC
CC
Input Rise and
Fall Times
2190Ω
10 ns
Input and Output
Timing Levels
OUTPUT
V
CC
x 0.5
3837 PGM T02
100pF
3837 FHD F16
2
X24C01
DEVICE OPERATION
Clock and Data Conventions
DatastatesontheSDAlinecanchangeonlyduringSCL
LOW. SDA state changes during SCL HIGH are re-
served for indicating start and stop conditions. Refer to
Figures 1 and 2.
The X24C01 supports a bidirectional bus oriented pro-
tocol. The protocol defines any device that sends data
ontothebusasatransmitterandthereceivingdeviceas
the receiver. The device controlling the transfer is a
master and the device being controlled is the slave. The
master will always initiate data transfers and provide the
clock for both transmit and receive operations. There-
fore, the X24C01 will be considered a slave in all
applications.
Start Condition
All commands are preceded by the start condition,
which is a HIGH to LOW transition of SDA when SCL is
HIGH. The X24C01 continuously monitors the SDA and
SCL lines for the start condition and will not respond to
any command until this condition has been met.
Figure 1. Data Validity
SCL
SDA
DATA STABLE
DATA
CHANGE
3837 FHD F06
3
X24C01
Stop Condition
The X24C01 will respond with an acknowledge after
recognitionofastartcondition, asevenbitwordaddress
andaR/Wbit. Ifawriteoperationhasbeenselected, the
X24C01 will respond with an acknowledge after each
byte of data is received.
All communications must be terminated by a stop con-
dition, which is a LOW to HIGH transition of SDA when
SCL is HIGH. The stop condition is also used by the
X24C01 to place the device in the standby power mode
after a read sequence. A stop condition can only be
issued after the transmitting device has released the
bus.
In the read mode the X24C01 will transmit eight bits of
data, release the SDA line and monitor the line for an
acknowledge. If an acknowledge is detected and no
stop condition is generated by the master, the X24C01
will continue to transmit data. If an acknowledge is not
detected, the X24C01 will terminate further data trans-
missions. The master must then issue a stop condition
to return the X24C01 to the standby power mode and
place the device into a known state.
Acknowledge
Acknowledge is a software convention used to indicate
successful data transfers. The transmitting device will
release the bus after transmitting eight bits. During the
ninth clock cycle the receiver will pull the SDA line LOW
to acknowledge that it received the eight bits of data.
Refer to Figure 3.
Figure 2. Definition of Start and Stop
SCL
SDA
START CONDITION
STOP CONDITION
3837 FHD F07
Figure 3. Acknowledge Response From Receiver
SCL FROM
MASTER
1
8
9
DATA
OUTPUT
FROM
TRANSMITTER
DATA
OUTPUT
FROM
RECEIVER
START
ACKNOWLEDGE
3837 FHD F08
4
X24C01
WRITE OPERATIONS
Byte Write
the page address. The X24C01 is capable of a four byte
page write operation. It is initiated in the same manner as
the byte write operation, but instead of terminating the
transfer of data after the first data byte, the master can
transmit up to three more bytes. After the receipt of each
data byte, the X24C01 will respond with an acknowledge.
To initiate a write operation, the master sends a start
conditionfollowedbyasevenbitwordaddressandawrite
bit. The X24C01 responds with an acknowledge, then
waits for eight bits of data and then responds with an
acknowledge. The master then terminates the transfer by
generating a stop condition, at which time the X24C01
begins the internal write cycle to the nonvolatile memory.
While the internal write cycle is in progress, the X24C01
inputs are disabled, and the device will not respond to any
requests from the master. Refer to Figure 4 for the
address, acknowledge and data transfer sequence.
After the receipt of each data byte, the two low order
addressbitsareinternallyincrementedbyone. Thehigh
order five bits of the address remain constant. If the
master should transmit more than four data bytes prior
togeneratingthestopcondition,theaddresscounterwill
“roll over” and the previously transmitted data will be
overwritten. As with the byte write operation, all inputs
are disabled until completion of the internal write cycle.
RefertoFigure5fortheaddress, acknowledgeanddata
transfer sequence.
Page Write
The most significant five bits of the word address define
Figure 4. Byte Write
S
T
A
R
T
S
WORD
ADDRESS (n)
BUS ACTIVITY:
SDA LINE
T
O
P
DATA n
S
P
M
S
B
L R A
/
W
A
C
K
BUS ACTIVITY:
X24C01
S
B
C
K
3837 FHD F09
Figure 5. Page Write
S
T
A
R
T
S
T
WORD
ADDRESS (n)
BUS ACTIVITY:
SDA LINE
DATA n
DATA n+1
DATA n+3
O
P
S
P
M
S
B
L R A
/
W
A
C
K
A
C
K
A
C
K
BUS ACTIVITY:
X24C01
S
B
C
K
3837 FHD F10
5
X24C01
Acknowledge Polling
Figure 6. ACK Polling Sequence
The disabling of the inputs can be used to take advan-
tage of the typical 5 ms write cycle time. Once the stop
condition is issued to indicate the end of the host’s write
operation the X24C01 initiates the internal write cycle.
ACK polling can be initiated immediately. This involves
issuing the start condition followed by the word address
for a write operation. If the X24C01 is still busy with the
write operation no ACK will be returned. If the X24C01
has completed the write operation an ACK will be
returned and the controller can then proceed with the
next read or write operation.
WRITE OPERATION
COMPLETED
ENTER ACK POLLING
ISSUE
START
ISSUE SLAVE
ISSUE STOP
ADDRESS AND R/W = 0
READ OPERATIONS
Read operations are initiated in the same manner as
write operations with exception that the R/W bit of the
word address is set to a one. There are two basic read
operations: byte read and sequential read.
ACK
NO
RETURNED?
YES
It should be noted that the ninth clock cycle of the read
operation is not a “don’t care.” To terminate a read
operation, the master must either issue a stop condition
duringtheninthcycleorholdSDAHIGHduringtheninth
clock cycle and then issue a stop condition.
NEXT
NO
OPERATION
A WRITE?
YES
ISSUE STOP
PROCEED
Byte Read
To initiate a read operation, the master sends a start
condition followed by a seven bit word address and a
read bit. The X24C01 responds with an acknowledge
and then transmits the eight bits of data. The read
operationisterminatedbythemaster;bynotresponding
with an acknowledge and by issuing a stop condition.
Refer to Figure 7 for the start, word address, read bit,
acknowledge and data transfer sequence.
PROCEED
3837 FHD F11
Figure 7. Byte Read
S
T
A
R
T
S
T
O
P
WORD
ADDRESS n
BUS ACTIVITY:
MASTER
SDA LINE
S
P
M
S
B
L R A
/
W
BUS ACTIVITY:
X24C01
S
B
C
K
DATA n
3837 FHD F12
6
X24C01
Sequential Read
Thedataoutputissequential,withthedatafromaddress
n followed by the data from n + 1. The address counter
for read operations increments all address bits, allowing
the entire memory contents to be serially read during
oneoperation. Attheendoftheaddressspace(address
127) the counter “rolls over” to zero and the X24C01
continues to output data for each acknowledge re-
ceived. Refer to Figure 8 for the address, acknowledge
and data transfer sequence.
Sequential read is initiated in the same manner as the
byte read. The first data byte is transmitted as with the
byte read mode, however, the master now responds
with an acknowledge, indicating it requires additional
data. The X24C01 continues to output data for each
acknowledge received. The read operation is termi-
natedbythemaster;bynotrespondingwithanacknowl-
edge and by issuing a stop condition.
Figure 8. Sequential Read
S
T
O
P
A
C
K
A
C
K
A
C
K
BUS ACTIVITY: ADDRESS
SDA LINE
P
R A
/
W
BUS ACTIVITY:
X24C01
C
K
DATA n
DATA n+1
DATA n+2
DATA n+x
3837 FHD F13
Figure 9. Typical System Configuration
V
CC
PULL-UP
RESISTORS
SDA
SCL
MASTER
SLAVE
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
TRANSMITTER/
RECEIVER
RECEIVER
3837 FHD F14
7
X24C01
ABSOLUTE MAXIMUM RATINGS*
*COMMENT
Temperature Under Bias.................. –65°C to +135°C
Storage Temperature ....................... –65°C to +150°C
Voltage on any Pin with
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation of
the device at these or any other conditions above those
indicatedintheoperationalsectionsofthisspecificationis
not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect device reliability.
Respect to V
............................ –1.0V to +7.0V
SS
D.C. Output Current ............................................ 5 mA
Lead Temperature
(Soldering, 10 Seconds) ............................. 300°C
RECOMMENDED OPERATING CONDITIONS
Temperature
Min.
Max.
Supply Voltage
Limits
Commercial
Industrial
Military
0°C
–40°C
–55°C
70°C
+85°C
X24C01
4.5V to 5.5V
3.5V to 5.5V
3.0V to 5.5V
2.7V to 5.5V
X24C01-3.5
X24C01-3
X24C01-2.7
+125°C
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified)
Limits
Symbol
Parameter
Min.
Max.
1
Units
Test Conditions
(1)
I
I
I
V
CC
V
CC
V
CC
Supply Current (Read)
Supply Current (Write)
Standby Current
mA SCL = V x 0.1/V x 0.9 Levels
CC
CC
CC
(2)
2
@ 100 KHz, SDA = Open
SCL = SDA = V
CC
(1)
100
µA
,
CC
SB1
V
CC
= 5V ± 10%
(1)
I
I
I
V
Standby Current
50
10
10
µA
µA
µA
V
SCL = SDA = V , V = 2.7V
SB2
CC
CC
CC
CC
Input Leakage Current
Output Leakage Current
Input Low Voltage
V
V
= GND to V
LI
IN
= GND to V
CC
LO
OUT
(2)
V
V
V
–1.0
V
x 0.3
lL
CC
(2)
Input High Voltage
V
x 0.7 V + 0.5
V
IH
CC
CC
Output Low Voltage
0.4
V
I
OL
= 2.1 mA
OL
3837 PGM T03
CAPACITANCE T = 25°C, f = 1.0 MHz, V = 5V
A
CC
Symbol
Parameter
Max.
Units
Test Conditions
(3)
C
C
Input/Output Capacitance (SDA)
Input Capacitance (SCL)
8
6
pF
pF
V
V
= 0V
= 0V
I/O
I/O
(3)
IN
IN
3837 PGM T05
Notes: (1) Must perform a stop command prior to measurement.
(2) V min. and V max. are for reference only and are not tested.
IL
IH
(3) This parameter is periodically sampled and not 100% tested.
8
X24C01
A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified)
Read & Write Cycle Limits
Symbol
Parameter
Min.
Max.
Units
f
SCL Clock Frequency
0
100
100
KHz
ns
SCL
T
Noise Suppression Time
I
Constant at SCL, SDA Inputs
t
t
SCL Low to SDA Data Out Valid
0.3
4.7
3.5
µs
µs
AA
Time the Bus Must Be Free Before a
New Transmission Can Start
BUF
t
t
t
t
t
t
t
t
t
t
Start Condition Hold Time
Clock Low Period
4.0
4.7
4.0
4.7
0
µs
µs
µs
µs
µs
ns
µs
ns
µs
ns
HD:STA
LOW
Clock High Period
HIGH
SU:STA
HD:DAT
SU:DAT
R
Start Condition Setup Time
Data In Hold Time
Data In Setup Time
250
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
1
300
F
4.7
SU:STO
DH
300
3837 PGM T06
POWER-UP TIMING
Symbol
Parameter
Max.
Units
(4)
t
t
Power-up to Read Operation
Power-up to Write Operation
1
5
ms
ms
PUR
(4)
PUW
3837 PGM T07
Bus Timing
t
t
t
t
HIGH
LOW
R
F
SCL
t
t
t
t
t
SU:STO
SU:STA
HD:STA
HD:DAT
SU:DAT
SDA IN
t
t
t
BUF
AA
DH
SDA OUT
3837 FHD F04
Note: (4) t
and t
are the delays required from the time V is stable until the specified operation can be initiated. These parameters
PUW CC
PUR
are periodically sampled and not 100% tested.
9
X24C01
WRITE CYCLE LIMITS
(5)
Symbol
Parameter
Write Cycle Time
Min.
Typ.
Max.
Units
(6)
t
5
10
ms
WR
3837 PGM T08
The write cycle time is the time from a valid stop
condition of a write sequence to the end of the internal
erase/programcycle.Duringthewritecycle,theX24C01
bus interface circuits are disabled, SDA is allowed to
remainhigh, andthedevicedoesnotrespondtoitsword
address.
Write Cycle Timing
SCL
ACK
SDA
8th BIT
WORD n
t
WR
STOP
CONDITION
START
CONDITION
X24C01
ADDRESS
3837 FHD F05
Notes: (5) Typical values are for T = 25°C and nominal supply voltage (5V).
A
(6) t
is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum
WR
time the device requires to automatically complete the internal write operation.
Guidelines for Calculating Typical Values of
Bus Pull-Up Resistors
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
120
Must be
steady
Will be
steady
V
CC MAX
R
=
=2.6KΩ
MIN
I
100
80
OL MIN
t
May change
from Low to
High
Will change
from Low to
High
R
R
=
MAX
C
BUS
MAX.
60
40
20
0
RESISTANCE
May change
from High to
Low
Will change
from High to
Low
MIN.
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
RESISTANCE
20 40 60 80
120
100
0
Center Line
is High
Impedance
N/A
BUS CAPACITANCE (pF)
3837 FHD F15
10
X24C01
PACKAGING INFORMATION
8-LEAD PLASTIC IN-LINE PACKAGE TYPE P
0.430 (10.92)
0.360 (9.14)
0.092 (2.34)
DIA. NOM.
0.255 (6.47)
0.245 (6.22)
PIN 1 INDEX
PIN 1
0.060 (1.52)
0.020 (0.51)
0.300
(7.62) REF.
HALF SHOULDER WIDTH ON
ALL END PINS OPTIONAL
0.140 (3.56)
0.130 (3.30)
SEATING
PLANE
0.020 (0.51)
0.015 (0.38)
0.150 (3.81)
0.125 (3.18)
0.062 (1.57)
0.058 (1.47)
0.110 (2.79)
0.090 (2.29)
0.020 (0.51)
0.016 (0.41)
0.325 (8.25)
0.300 (7.62)
0.015 (0.38)
MAX.
0°
15°
TYP. 0.010 (0.25)
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
11
X24C01
PACKAGING INFORMATION
8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S
0.150 (3.80)
0.158 (4.00)
0.228 (5.80)
0.244 (6.20)
PIN 1 INDEX
PIN 1
0.014 (0.35)
0.019 (0.49)
0.188 (4.78)
0.197 (5.00)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.19)
0.010 (0.25)
0.050 (1.27)
0.010 (0.25)
0.020 (0.50)
X 45°
0° – 8°
0.0075 (0.19)
0.010 (0.25)
0.027 (0.683)
0.037 (0.937)
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESIS IN MILLIMETERS)
3926 FHD F22
12
X24C01
PACKAGING INFORMATION
8-LEAD MINIATURE SMALL OUTLINE GULL WING PACKAGE TYPE M
0.118 ± 0.002
(3.00 ± 0.05)
0.012 + 0.006 / -0.002
(0.30 + 0.15 / -0.05)
0.0256 (0.65) TYP
R 0.014 (0.36)
0.118 ± 0.002
(3.00 ± 0.05)
0.030 (0.76)
0.0216 (0.55)
7° TYP
0.036 (0.91)
0.032 (0.81)
0.040 ± 0.002
(1.02 ± 0.05)
0.008 (0.20)
0.004 (0.10)
0.150 (3.81)
0.007 (0.18)
0.005 (0.13)
REF.
0.193 (4.90)
REF.
NOTE:
1. ALL DIMENSIONS IN INCHES AND (MILLIMETERS)
3003 ILL 01
13
X24C01
ORDERING INFORMATION
X24C01
X
X
-X
V
CC
Limits
Device
Blank = 4.5V to 5.5V
3.5 = 3.5V to 5.5V
3 = 3.0V to 5.5V
2.7 = 2.7V to 5.5V
Temperature Range
Blank = Commercial = 0°C to +70°C
I = Industrial = –40°C to +85°C
M = Military = –55°C to +125°C
Package
P = 8-Lead Plastic DIP
S = 8-Lead SOIC
M = 8-Lead MSOP
Blank = 8-Lead SOIC
P = 8-Lead Plastic DIP
M = 8-Lead MSOP
Part Mark Convention
X24C01
X
X
Blank = 4.5V to 5.5V, 0°C to +70°C
F = 2.7V to 5.5V, 0°C to +70°C
G = 2.7V to 5.5V, –40°C to +85°C
I = 4.5V to 5.5V, –40°C to +85°C
B = 3.5V to 5.5V, 0°C to +70°C
C = 3.5V to 5.5V, –40°C to +85°C
D = 3.0V to 5.5V, 0°C to +70°C
E = 3.0V to 5.5V, –40°C to +85°C
M = 4.5V to 5.5V, –55°C to +125°C
LIMITED WARRANTY
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty,
express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.
Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and
prices at any time and without notice.
Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are
implied.
U.S. PATENTS
Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481; 4,404,475;
4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967; 4,883, 976. Foreign patents and
additional patents pending.
LIFE RELATED POLICY
In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error
detection and correction, redundancy and back-up features to prevent such an occurence.
Xicor's products are not authorized for use in critical components in life support devices or systems.
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant
injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
14
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