CAT25010_07 Datasheet, PDF (1/17 Pages) Catalyst Semiconductor – 1-Kb, 2-Kb and 4-Kb SPI Serial CMOS EEPROM

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
PIN CONFIGURATION
PDIP (L)
SOIC (V)
TSSOP (Y)
TDFN (VP2)
C¯¯S 1
SO 2
¯W¯P¯ 3
V_SS 4
8 V_CC
7 H¯¯O¯L¯D¯
6 SCK
5 SI
PIN FUNCTION
Pin Name
C¯¯S
SO
¯W¯P¯
V_SS
SI
SCK
H¯¯O¯L¯D¯
V_CC
Function
Chip Select
Serial Data Output
Write Protect
Ground
Serial Data Input
Serial Clock
Hold Transmission Input
Power Supply
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 (C¯¯S) input. In addition, the required bus signals
are a clock input (SCK), data input (SI) and data
output (SO) lines. The H¯¯O¯L¯D¯ 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.
FUNCTIONAL SYMBOL
V_CC
SI
CS
CAT25010
SO
WP
CAT25020
HOLD
CAT25040
SCK
V_SS
For Ordering Information details, see page 16.
© Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. MD-1006 Rev. T