CAT25C01, CAT25C02, CAT25C04
1K/2K/4K SPI Serial CMOS EEPROM
FEATURES
DESCRIPTION
I 10 MHz SPI compatible
The CAT25C01/02/04 is a 1K/2K/4K Bit SPI Serial
CMOS EEPROM internally organized as 128x8/256x8/
512x8 bits. Catalyst’s advanced CMOS Technology
substantially reduces device power requirements. The
CAT25C01/02/04 features a 16-byte page write buffer.
The device operates via the SPI bus serial interface and
is enabled though a Chip Select (CS). In addition to the
Chip Select, the clock input (SCK), data in (SI) and data
out (SO) are required to access the device. The HOLD
pin may be used to suspend any serial communication
without resetting the serial sequence. The CAT25C01/
02/04 is designed with software and hardware write
protectionfeaturesincludingBlockWriteprotection.The
device is available in 8-pin DIP, 8-pin SOIC and 8-pin
TSSOP packages.
I 1.8 to 5.5 volt operation
I 16-byte page write buffer
I Hardware and software protection
I Block write protection
– Protect 1/4, 1/2 or all of EEPROM array
I Low power CMOS technology
I SPI modes (0,0 & 1,1)
I Industrial temperature range
I 1,000,000 program/erase cycles
I 100 year data retention
I Self-timed write cycle
I RoHS compliant “
” & “
”
8-pin PDIP, SOIC and TSSOP packages
PIN CONFIGURATION
FUNCTIONAL SYMBOL
PDIP (L)
SOIC (V)
TSSOP (Y)
V
CC
CS
1
8
V
CC
SI
CS
SO
2
3
4
7
6
5
HOLD
SCK
SI
CAT25C01
CAT25C02
CAT25C04
WP
WP
SO
V
SS
HOLD
SCK
PIN FUNCTIONS
Pin Name
SO
Function
V
SS
Serial Data Output
Serial Clock
SCK
WP
Write Protect
VCC
+1.8V to +5.5V Power Supply
Ground
VSS
CS
Chip Select
SI
Serial Data Input
Suspends Serial Input
HOLD
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1105, Rev. B
1