CAT24FC256_05 Datasheet, PDF (1/12 Pages) Catalyst Semiconductor – 256K-Bit I2C Serial CMOS EEPROM

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 V_CC = 1.8 V to 5.5 V
- 1MHz for V_CC = 2.5 V to 5.5 V
I Schmitt trigger filtered inputs for noise suppression
I Low power CMOS technology
t _{I 64-byte page write buffer}
r _{I Self-timed write cycle with auto-clear}
I Write protect feature
– Entire array protected when WP at V_IH
I 100,000 program/erase cycles
I 100 year data retention
I 8-pin DIP or 8-pin SOIC(JEDEC) and 8-pin SOIC
(EIAJ)
a _DESCRIPTION
The CAT24FC256 is a 256K-bit Serial CMOS EEPROM
P _{internally organized as 32,768 words of 8 bits each.}
Catalyst’s advanced CMOS technology substantially
reduces device power requirements. The CAT24FC256
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.
d _{PIN CONFIGURATION}
e _{DIP Package (P, L, GL)}
u ^{A0 1}
A1 2
A2 3
tin ^{VSS 4}
8 VCC
7 WP
6 SCL
5 SDA
SOIC Package (J, W, K, X, GW, GX)
n _{A0 1}
o ^{A1 2}
A2
3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
isc ^{PIN FUNCTIONS}
Pin Name
Function
D^{A0, A1, A2 Address Inputs}
BLOCK DIAGRAM
EXTERNAL LOAD
VCC
VSS
DOUT
ACK
WORD ADDRESS
BUFFERS
SDA
START/STOP
LOGIC
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
512
XDEC 512
EEPROM
512X512
CONTROL
WP
LOGIC
DATA IN STORAGE
SDA
SCL
Serial Data/Address
Serial Clock
HIGH VOLTAGE/
TIMING CONTROL
WP
Write Protect
SCL
STATE COUNTERS
VCC
+1.8V to +5.5V Power Supply
VSS
Ground
A0
SLAVE
A1
ADDRESS
NC
No Connect
A2
COMPARATORS
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I²C Bus Protocol.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1040, Rev. K