CAT24FC256LA-1.8 [CATALYST]

EEPROM, 32KX8, Serial, CMOS, PDIP8, LEAD AND HALOGEN FREE, PLASTIC, DIP-8;
CAT24FC256LA-1.8
型号: CAT24FC256LA-1.8
厂家: CATALYST SEMICONDUCTOR    CATALYST SEMICONDUCTOR
描述:

EEPROM, 32KX8, Serial, CMOS, PDIP8, LEAD AND HALOGEN FREE, PLASTIC, DIP-8

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 时钟 双倍数据速率 光电二极管 内存集成电路
文件: 总12页 (文件大小:460K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
CAT24FC256  
256K-Bit I2C Serial CMOS EEPROM  
FEATURES  
I Fast mode I2C bus compatible*  
I Industrial and automotive  
temperature ranges  
I Max clock frequency:  
I 5 ms max write cycle time  
- 400kHz for VCC = 1.8 V to 5.5 V  
- 1MHz for VCC = 2.5 V to 5.5 V  
I Write protect feature  
– Entire array protected when WP at VIH  
I Schmitt trigger filtered inputs for noise suppression  
I Low power CMOS technology  
I 100,000 program/erase cycles  
I 100 year data retention  
I 64-byte page write buffer  
I 8-pin DIP or 8-pin SOIC(JEDEC) and 8-pin SOIC  
I Self-timed write cycle with auto-clear  
(EIAJ)  
DESCRIPTION  
TheCAT24FC256isa256K-bitSerialCMOSEEPROM  
internally organized as 32,768 words of 8 bits each.  
Catalyst’s advanced CMOS technology substantially  
reducesdevicepowerrequirements.TheCAT24FC256  
features a 64-byte page write buffer. The device oper-  
ates via the I2C bus serial interface and is available in 8-  
pin DIP or 8-pin SOIC packages.  
BLOCK DIAGRAM  
PIN CONFIGURATION  
EXTERNAL LOAD  
DIP Package (P, L, GL)  
SENSE AMPS  
SHIFT REGISTERS  
D
1
2
3
4
8
7
6
5
V
A0  
A1  
OUT  
CC  
ACK  
WP  
A2  
SCL  
SDA  
V
V
CC  
SS  
V
SS  
WORD ADDRESS  
BUFFERS  
COLUMN  
DECODERS  
512  
START/STOP  
SOIC Package (J, W, K, X, GW, GX)  
SDA  
LOGIC  
1
2
3
4
8
7
6
5
V
A0  
A1  
A2  
CC  
WP  
EEPROM  
512X512  
XDEC  
512  
SCL  
SDA  
V
CONTROL  
LOGIC  
SS  
WP  
PIN FUNCTIONS  
Pin Name  
Function  
DATA IN STORAGE  
A0, A1, A2 Address Inputs  
SDA  
SCL  
WP  
VCC  
VSS  
NC  
Serial Data/Address  
HIGH VOLTAGE/  
TIMING CONTROL  
Serial Clock  
Write Protect  
SCL  
STATE COUNTERS  
+1.8V to +5.5V Power Supply  
Ground  
A0  
A1  
SLAVE  
ADDRESS  
COMPARATORS  
A2  
No Connect  
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
1
CAT24FC256  
ABSOLUTE MAXIMUM RATINGS*  
*COMMENT  
Temperature Under Bias ................. 55°C to +125°C  
Storage Temperature....................... 65°C to +150°C  
Stresses above those listed under Absolute Maximum  
Ratingsmay cause permanent damage to the device.  
These are stress ratings only, and functional operation of  
the device at these or any other conditions outside of those  
listed in the operational sections of this specification is not  
implied. Exposure to any absolute maximum rating for  
extended periods may affect device performance and  
reliability.  
Voltage on Any Pin with  
Respect to Ground(1) ........... 2.0V to +VCC + 2.0V  
V
CC with Respect to Ground ............... 2.0V to +7.0V  
Package Power Dissipation  
Capability (TA = 25°C) ................................... 1.0W  
Lead Soldering Temperature (10 secs) ............ 300°C  
Output Short Circuit Current(2) ........................ 100mA  
RELIABILITY CHARACTERISTICS  
Symbol  
Parameter  
Endurance  
Data Retention  
Latch-up  
Reference Test Method  
Min  
Typ  
Max  
Units  
Cycles/Byte  
Years  
(3)  
NEND  
MIL-STD-883, Test Method 1033 100,000  
(3)  
TDR  
MIL-STD-883, Test Method 1008  
JEDEC Standard 17  
100  
100  
(3)(4)  
ILTH  
mA  
DC OPERATING CHARACTERISTICS  
= 1.8 V to 5.5 V, unless otherwise specified.  
V
CC  
Symbol Parameter  
Test Conditions  
Min  
Typ  
Max  
Units  
I
Power Supply Current - Read  
Power Supply Current - Write  
Standby Current  
f
= 100kHz  
SCL  
400  
µA  
CC1  
V
CC  
= 5V  
I
f
= 400kHz  
4
mA  
CC2  
SCL  
V
CC  
= 5V  
(5)  
SB  
I
V
V
= GND or V  
1
µA  
IN  
CC  
V
CC  
= 5V  
I
Input Leakage Current  
Output Leakage Current  
Input Low Voltage  
= GND to V  
1
1
µA  
µA  
LI  
IN  
CC  
I
V
= GND to V  
OUT CC  
LO  
V
IL  
-0.5  
V
x 0.3  
V
V
V
V
CC  
V
Input High Voltage  
V
x 0.7  
V
+ 0.5  
CC  
IH  
CC  
V
Output Low Voltage (V  
= +3.0 V)  
= +1.8 V)  
I
I
= 3.0 mA  
= 1.5 mA  
0.4  
OL1  
OL2  
CC  
CC  
OL  
V
Output Low Voltage (V  
0.5  
OL  
CAPACITANCE T = 25°C, f = 1.0 MHz, V  
= 5V  
CC  
A
Symbol  
Test  
Input/Output Capacitance (SDA)  
Input Capacitance (SCL, WP, A0, A1)  
Conditions  
VI/O = 0V  
VIN = 0V  
Min  
Typ  
Max  
8
Units  
pF  
(3)  
CI/O  
(3)  
CIN  
6
pF  
Note:  
(1) The minimum DC input voltage is 0.5V. During transitions, inputs may undershoot to 2.0V for periods of less than 20 ns. Maximum DC  
voltage on output pins is V +0.5V, which may overshoot to V + 2.0V for periods of less than 20ns.  
CC  
CC  
(2) Output shorted for no more than one second. No more than one output shorted at a time.  
(3) These parameter are tested initially and after a design or process change that affects the parameter according to appropriate AEC-Q100  
and JEDEC test methods.  
(4) Latch-up protection is provided for stresses up to 100 mA on address and data pins from 1V to V +1V.  
CC  
(5) Maximum standby current (I ) = 10µA for the Automotive and Extended Automotive temperature range.  
SB  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
2
CAT24FC256  
AC CHARACTERISTICS  
= 1.8V to 5.5 V, unless otherwise specified. Output load is 1 TTL gate and 100pF.  
V
CC  
Read & Write Cycle Limits  
Symbol Parameter  
VCC=1.8V - 5.5V  
VCC=2.5V - 5.5V  
Min  
Max  
Min  
Max  
Units  
FSCL  
tAA  
Clock Frequency  
400  
1000  
kHz  
SCL Low to SDA Data Out and  
ACK Out  
0.05  
1.3  
0.9  
0.05  
0.5  
0.5  
µs  
µs  
Time the Bus Must be Free Before  
a New Transmission Can Start  
(2)  
tBUF  
tHD:STA  
tLOW  
Start Condition Hold Time  
Clock Low Period  
0.6  
1.3  
0.6  
0.25  
0.6  
µs  
µs  
µs  
tHIGH  
Clock High Period  
0.4  
Start Condition Setup Time (for a  
Repeated Start Condition)  
tSU:STA  
0.6  
0.25  
µs  
tHD:DAT  
tSU:DAT  
Data In Hold Time  
0
0
ns  
ns  
µs  
ns  
µs  
ns  
ms  
ns  
µs  
µs  
Data In Setup Time  
100  
20  
100  
(2)  
tR  
SDA and SCL Rise Time  
SDA and SCL Fall Time  
Stop Condition Setup Time  
Data Out Hold Time  
0.3  
0.1  
(2)  
tF  
20  
300  
100  
tSU:STO  
tDH  
0.6  
50  
0.25  
50  
tWR  
Write Cycle Time  
5
5
tSP  
Input Suppresssion (SDA, SCL)  
WP Setup Time  
50  
50  
tSU;WP  
tHD;WP  
0.6  
1.3  
0.5  
0.8  
WP Hold Time  
(2)(3)  
Power-Up Timing  
Symbol  
Parameter  
Min  
Typ  
Max  
Units  
ms  
tPUR  
Power-Up to Read Operation  
Power-Up to Write Operation  
1
1
tPUW  
ms  
Note:  
(1) AC measurement conditions:  
RL (connects to V ): 0.3V to 0.7 V  
CC  
CC  
CC  
Input rise and fall times: < 50ns  
Input and output timing reference voltages: 0.5 V  
CC  
(2) This parameter is tested initially and after a design or process change that affects the parameter.  
(3) t and t are the delays required from the time V is stable until the specified operation can be initiated.  
PUR  
PUW  
CC  
interface circuits are disabled, SDA is allowed to remain  
high, and the device does not respond to its slave  
address.  
The write cycle time is the time from a valid stop  
condition of a write sequence to the end of the internal  
program/erase cycle. During the write cycle, the bus  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
3
CAT24FC256  
SDA: Serial Data/Address  
FUNCTIONAL DESCRIPTION  
The bidirectional serial data/address pin is used to  
transfer all data into and out of the device. The SDA pin  
is an open drain output and can be wire-ORed with other  
open drain or open collector outputs.  
TheCAT24FC256supportstheI2CBusdatatransmission  
protocol.ThisInter-IntegratedCircuitBusprotocoldefines  
any device that sends data to the bus to be a transmitter  
and any device receiving data to be a receiver. The  
transfer is controlled by the Master device which  
generates the serial clock and all START and STOP  
conditions for bus access. The CAT24FC256 operates  
as a Slave device. Both the Master device and Slave  
device can operate as either transmitter or receiver, but  
the Master device controls which mode is activated.  
WP: Write Protect  
This input, when tied to GND, allows write operations to  
the entire memory. When this pin is tied to Vcc, the  
entire memory is write protected. When left floating,  
memory is unprotected.  
A0, A1, A2: Device Address Inputs  
PIN DESCRIPTIONS  
These pins are hardwired or left connected. When  
hardwired,uptoeightCAT24FC256'smaybeaddressed  
on a single bus system. When the pins are left  
unconnected, the default values are zero.  
SCL: Serial Clock  
The serial clock input clocks all data transferred into or  
out of the device.  
Figure 1. Bus Timing  
t
t
t
F
HIGH  
R
t
t
LOW  
LOW  
SCL  
t
t
SU:STA  
HD:DAT  
t
t
t
t
HD:STA  
SU:DAT  
SU:STO  
SDA IN  
BUF  
t
t
AA  
DH  
SDA OUT  
Figure 2. Write Cycle Timing  
SCL  
SDA  
8TH BIT  
BYTE n  
ACK  
t
WR  
STOP  
CONDITION  
START  
CONDITION  
ADDRESS  
Figure 3. Start/Stop Timing  
SDA  
SCL  
START BIT  
STOP BIT  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
4
CAT24FC256  
I2C BUS PROTOCOL  
The features of the I2C bus protocol are defined as  
follows:  
as many as eight devices on the same bus. These bits  
must compare to their hardwired input pins. The last bit  
of the slave address specifies whether a Read or Write  
operation is to be performed. When this bit is set to 1, a  
Read operation is selected, and when set to 0, a Write  
operation is selected.  
(1) Data transfer may be initiated only when the bus is  
not busy.  
(2) During a data transfer, the data line must remain  
stablewhenevertheclocklineishigh.Anychanges  
in the data line while the clock line is high will be  
interpreted as a START or STOP condition.  
After the Master sends a START condition and the slave  
address byte, the CAT24FC256 monitors the bus and  
responds with an acknowledge (on the SDA line) when  
its address matches the transmitted slave address. The  
CAT24FC256 then performs a Read or Write operation  
depending on the state of the R/W bit.  
START Condition  
The START Condition precedes all commands to the  
device, and is defined as a HIGH to LOW transition of  
SDA when SCL is HIGH. The CAT24FC256 monitors  
the SDA and SCL lines and will not respond until this  
condition is met.  
Acknowledge  
Afterasuccessfuldatatransfer, eachreceivingdeviceis  
required to generate an acknowledge. The  
Acknowledging device pulls down the SDA line during  
the ninth clock cycle, signaling that it received the 8 bits  
of data.  
STOP Condition  
A LOW to HIGH transition of SDA when SCL is HIGH  
determinestheSTOPcondition.Alloperationsmustend  
with a STOP condition.  
The CAT24FC256 responds with an acknowledge after  
receivingaSTARTconditionanditsslaveaddress. Ifthe  
device has been selected along with a write operation,  
it responds with an acknowledge after receiving each 8-  
bit byte.  
DEVICE ADDRESSING  
The bus Master begins a transmission by sending a  
START condition. The Master sends the address of the  
particular slave device it is requesting. The four most  
significant bits of the 8-bit slave address are fixed as  
1010 (Fig. 5). The CAT24FC256 uses the next three bits  
as address bits. The address bits A2, A1 and A0 allow  
WhentheCAT24FC256beginsaREADmodeittransmits  
8 bits of data, releases the SDA line, and monitors the  
line for an acknowledge. Once it receives this  
acknowledge,theCAT24FC256willcontinuetotransmit  
Figure 4. Acknowledge Timing  
SCL FROM  
MASTER  
1
8
9
DATA OUTPUT  
FROM TRANSMITTER  
DATA OUTPUT  
FROM RECEIVER  
START  
ACKNOWLEDGE  
Figure 5. Slave Address Bits  
1
0
1
0
A2  
A1  
A0 R/W  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
5
CAT24FC256  
data. IfnoacknowledgeissentbytheMaster, thedevice  
terminates data transmission and waits for a STOP  
condition.  
IftheMastertransmitsmorethan64bytesbeforesending  
the STOP condition, the address counter wraps around,  
and previously transmitted data will be overwritten.  
When all 64 bytes are received, and the STOP condition  
has been sent by the Master, the internal programming  
cycle begins. At this point, all received data is written to  
the CAT24FC256 in a single write cycle.  
WRITE OPERATIONS  
Byte Write  
In the Byte Write mode, the Master device sends the  
START condition and the slave address information  
(with the R/W bit set to zero) to the Slave device. After  
the Slave generates an acknowledge, the Master sends  
two 8-bit address words that are to be written into the  
address pointers of the CAT24FC256. After receiving  
another acknowledge from the Slave, the Master device  
transmits the data to be written into the addressed  
memorylocation.TheCAT24FC256acknowledgesonce  
more and the Master generates the STOP condition. At  
this time, the device begins an internal programming  
cycle to nonvolatile memory. While the cycle is in  
progress, thedevicewillnotrespondtoanyrequestfrom  
the Master device.  
Acknowledge Polling  
Disabling of the inputs can be used to take advantage of  
the typical write cycle time. Once the stop condition is  
issued to indicate the end of the host's write operation,  
CAT24FC256 initiates the internal write cycle. ACK  
polling can be initiated immediately. This involves issu-  
ing the start condition followed by the slave address for  
a write operation. If CAT24FC256 is still busy with the  
write operation, no ACK will be returned. If  
CAT24FC256 has completed the write operation, an  
ACK will be returned and the host can then proceed with  
the next read or write operation.  
Page Write  
WRITE PROTECTION  
The CAT24FC256 writes up to 64 bytes of data, in a  
single write cycle, using the Page Write operation. The  
page write operation is initiated in the same manner as  
the byte write operation, however instead of terminating  
after the initial byte is transmitted, the Master is allowed  
to send up to 63 additional bytes. After each byte has  
been transmitted, CAT24FC256 will respond with an  
acknowledge, and internally increment the six low order  
address bits by one. The high order bits remain un-  
changed.  
The Write Protection feature allows the user to protect  
against inadvertent programming of the memory array.  
If the WP pin is tied to VCC, the entire memory array is  
protected and becomes read only. The CAT24FC256  
will accept both slave and byte addresses, but the  
memory location accessed is protected from program-  
ming by the devices failure to send an acknowledge  
after the first byte of data is received.  
Figure 6. Byte Write Timing  
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
BYTE ADDRESS  
A A A  
0
A
DATA  
15  
8
7
SDA LINE  
S
P
*
A
C
K
A
C
K
A
C
K
A
C
K
=Don't Care Bit  
*
Figure 7. Page Write Timing  
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
BYTE ADDRESS  
A A A  
0
A
DATA  
DATA n  
DATA n+63  
15  
8
7
SDA LINE  
S
P
*
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
=Don't Care Bit  
*
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
6
CAT24FC256  
slave address and byte addresses of the location it  
wishes to read. After CAT24FC256 acknowledges, the  
MasterdevicesendstheSTARTconditionandtheslave  
address again, this time with the R/W bit set to one. The  
CAT24FC256 then responds with its acknowledge and  
sends the 8-bit byte requested. The master device does  
not send an acknowledge but will generate a STOP  
condition.  
READ OPERATIONS  
The READ operation for the CAT24FC256 is initiated in  
the same manner as the write operation with one  
exception, that R/W bit is set to one. Three different  
READ operations are possible: Immediate/Current  
Address READ, Selective/Random READ and  
Sequential READ.  
Immediate/Current Address Read  
Sequential Read  
The CAT24FC256s address counter contains the  
address of the last byte accessed, incremented by one.  
In other words, if the last READ or WRITE access was  
to address N, the READ immediately following would  
accessdatafromaddressN+1.IfN=E(whereE=32767),  
then the counter will wrap aroundto address 0 and  
continue to clock out data. After the CAT24FC256  
receives its slave address information (with the R/W bit  
set to one), it issues an acknowledge, then transmits the  
8 bit byte requested. The master device does not send  
an acknowledge, but will generate a STOP condition.  
The Sequential READ operation can be initiated by  
either the Immediate Address READ or Selective READ  
operations. AftertheCAT24FC256sendstheinitial8-bit  
byte requested, the Master will respond with an  
acknowledge which tells the device it requires more  
data. The CAT24FC256 will continue to output an 8-bit  
byte for each acknowledge sent by the Master. The  
operationwillterminatewhentheMasterfailstorespond  
with an acknowledge, thus sending the STOP condition.  
The data being transmitted from CAT24FC256 is  
outputtedsequentiallywithdatafromaddressNfollowed  
bydatafromaddressN+1.TheREADoperationaddress  
counter increments all of the CAT24FC256 address bits  
so that the entire memory array can be read during one  
operation. If more than E (where E=32767) bytes are  
read out, the counter will wrap aroundand continue to  
clock out data bytes.  
Selective/Random Read  
Selective/Random READ operations allow the Master  
device to select at random any memory location for a  
READ operation. The Master device first performs a  
dummywriteoperationbysendingtheSTARTcondition,  
Figure 8. Immediate Address Read Timing  
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
DATA  
SDA LINE  
S
P
A
C
K
N
O
A
C
K
SCL  
SDA  
8
9
8TH BIT  
DATA OUT  
NO ACK  
STOP  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
7
CAT24FC256  
Figure 9. Selective Read Timing  
S
T
A
R
T
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
BYTE ADDRESS  
SLAVE  
ADDRESS  
A
A  
A A  
DATA  
15  
8
7
0
SDA LINE  
S
S
P
*
A
C
K
A
C
K
A
C
K
A
C
K
N
O
A
C
K
=Don't Care Bit  
*
Figure 10. Sequential Read Timing  
S
T
O
P
BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
DATA n  
DATA n+1  
DATA n+2  
DATA n+x  
SDA LINE  
P
A
C
K
A
C
K
A
C
K
A
C
K
N
O
A
C
K
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
8
CAT24FC256  
PACKAGE OUTLINES  
8–LEAD 300 MIL WIDE PLASTIC DIP (P, L, GL)  
0.245 (6.17)  
0.295 (7.49)  
0.300 (7.62)  
0.325 (8.26)  
0.355 (9.02)  
0.400 (10.16)  
0.120 (3.05)  
0.180 (4.57) MAX  
0.150 (3.81)  
0.015 (0.38)  
0.110 (2.79)  
0.150 (3.81)  
0.100 (2.54)  
BSC  
0.310 (7.87)  
0.380 (9.65)  
0.045 (1.14)  
0.060 (1.52)  
0.014 (0.36)  
0.022 (0.56)  
Notes:  
1. Complies with JEDEC Publication 95 MS001 dimensions; however, some of the dimensions may be more stringent.  
2. All linear dimensions are in inches and parenthetically in millimeters.  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
9
CAT24FC256  
8-LEAD 150 MIL WIDE SOIC (J, W, GW)  
0.1890 (4.80)  
0.1968 (5.00)  
0.0532 (1.35)  
0.0688 (1.75)  
0.149 (3.80)  
0.1574 (4.00)  
0.2284 (5.80)  
0.2440 (6.20)  
0.050 (1.27) BSC  
0.0040 (0.10)  
0.0098 (0.25)  
0.013 (0.33)  
0.020 (0.51)  
0.0099 (0.25)  
0.0196 (0.50)  
X 45˚  
0.0075 (0.19)  
0.0098 (0.25)  
0˚-8˚  
0.016 (0.40)  
0.050 (1.27)  
Notes:  
1. Complies with JEDEC publication 95 MS-012 dimensions; however, some dimensions may be more stringent.  
2. All linear dimensions are in inches and parenthetically in millimeters.  
3. Lead coplanarity is 0.004" (0.102mm) maximum.  
8-LEAD 250 MIL WIDE SOIC (K, X, GX)  
0.205 (5.15)  
0.210 (5.35)  
0.080 (2.03)  
MAX  
0.205 (5.20)  
0.213 (5.40)  
0.303 (7.70)  
0.318 (8.10)  
0.046 (1.17)  
0.054 (1.37)  
0.0137 (0.35)  
0.0177 (0.45)  
0.0267 (0.68)  
0.0303 (0.77)  
0.008 (0.20)  
4˚ REF  
0.025 (0.65)  
Notes:  
1. All linear dimensions are in inches and parenthetically in millimeters.  
2. Lead coplanarity is 0.004" (0.102mm) maximum.  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
10  
CAT24FC256  
ORDERING INFORMATION  
Prefix  
Device #  
24FC256  
Suffix  
CAT  
J
-1.8  
I
TE13  
REV-A  
Temperature Range  
Optional  
Company ID  
Product  
Number  
Tape & Reel  
I = Industrial (-40˚C to 85˚C)  
A = Automotive (-40˚C to 105˚C)  
E = Extended (-40˚C to 125˚C)  
Die Revision  
Package  
Operating Voltage  
Blank: 2.5 to 5.5 V  
1.8: 1.8 to 5.5 V  
P: PDIP  
K: SOIC, EIAJ  
J: SOIC, JEDEC  
L: PDIP (Lead-free, Halogen-free)  
W: SOIC, JEDEC (Lead-free, Halogen-free)  
X: SOIC, EIAJ (Lead-free, Halogen-free)  
GL: PDIP (Lead-free, Halogen-free, NiPdAu lead plating)  
GW: SOIC, JEDEC (Lead-free, Halogen-free, NiPdAu lead plating)  
GX: SOIC, EIAJ (Lead-free, Halogen-free, NiPdAu lead plating)  
Notes:  
(1) The device used in the above example is a 24FC256JI-1.8TE13 (SOIC, Industrial Temperature, 1.8 Volt to 5.5 Volt Operating  
Voltage, Tape & Reel)  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 1040, Rev. K  
11  
REVISION HISTORY  
Date  
Revision Comments  
12/09/03  
01/21/04  
03/13/04  
E
F
Changed Max Clock Frequency from 6.0V to 5.5V in all instances  
Changed Endurance Maximum to 100,000 cycles.  
G
Eliminated data sheet designation  
Changed VCC power supply from 1.8V to 6.0V to 1.8V to 5.5V  
Updated ICC2 Power supply max in DC Operating Characteristics  
Added package mechanical drawings  
Eliminated Reel quantity in Ordering Information  
05/16/04  
H
Update D.C. Operating Characteristics  
Update Read & Write Cycle Limits  
Update Ordering Information  
Update Revision History  
Update Rev Number  
06/07/04  
I
Update Read & Write Cycle Limits  
Update notes on page 2  
7/28/04  
J
08/02/05  
K
Update Pin Configuration  
Update Ordering Information  
Copyrights, Trademarks and Patents  
Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:  
DPP ™  
AE2 ™  
MiniPot™  
Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents  
issued to Catalyst Semiconductor contact the Company’s corporate office at 408.542.1000.  
CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS  
PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE  
RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING  
OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.  
Catalyst Semiconductor 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 Catalyst Semiconductor product could create a  
situation where personal injury or death may occur.  
Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets  
labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.  
Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate  
typical semiconductor applications and may not be complete.  
Catalyst Semiconductor, Inc.  
Corporate Headquarters  
1250 Borregas Avenue  
Sunnyvale, CA 94089  
Phone: 408.542.1000  
Publication #: 1040  
Fax: 408.542.1200  
Revison:  
K
www.caalyst-semiconductor.com  
Issue date:  
08/02/05  

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