CAT25010, CAT25020, CAT25040
1-Kb, 2-Kb and 4-Kb SPI Serial CMOS EEPROM
FEATURES
10 MHz SPI compatible
1.8V to 5.5V supply voltage range
SPI modes (0,0) & (1,1)
16-byte page write buffer
Self-timed write cycle
Hardware and software protection
Block write protection
– Protect 1/4, 1/2 or entire EEPROM array
Low power CMOS technology
1,000,000 program/erase cycles
100 year data retention
Industrial and Extended temperature range
RoHS-compliant 8-lead PDIP, SOIC, TSSOP and
8-pad TDFN packages
DESCRIPTION
The CAT25010/20/40 are 1-Kb/2-Kb/4-Kb Serial
CMOS EEPROM devices internally organized as
128x8/256x8/512x8 bits. They feature a 16-byte page
write buffer and support the Serial Peripheral Interface
(SPI) protocol. The device is enabled through a Chip
¯¯
Select (CS) input. In addition, the required bus signals
are a clock input (SCK), data input (SI) and data
¯¯¯¯¯
output (SO) lines. The HOLD input may be used to
pause any serial communication with the
CAT25010/20/40 device. These devices feature
software and hardware write protection, including
partial as well as full array protection.
PIN CONFIGURATION
PDIP (L)
SOIC (V)
TSSOP (Y)
TDFN (VP2)
¯¯
CS
SO
¯¯¯
WP
V
SS
1
2
3
4
8 V
CC
¯¯¯¯¯
7 HOLD
6 SCK
5 SI
SI
CS
WP
HOLD
SCK
CAT25010
CAT25020
CAT25040
SO
FUNCTIONAL SYMBOL
V
CC
PIN FUNCTION
Pin Name
¯¯
CS
SO
¯¯¯
WP
V
SS
SI
SCK
¯¯¯¯¯
HOLD
V
CC
Function
Chip Select
Serial Data Output
Write Protect
Ground
Serial Data Input
Serial Clock
Hold Transmission Input
Power Supply
V
SS
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-1006 Rev. T
CATALYST [ CATALYST SEMICONDUCTOR ]
