CAT25320 Datasheet, PDF (1/16 Pages) Catalyst Semiconductor – 32-Kb SPI Serial CMOS EEPROM

32-Kb SPI Serial CMOS EEPROM
CAT25320
FEATURES
„ 10 MHz SPI compatible
„ 1.8V to 5.5V supply voltage range
„ SPI modes (0,0) & (1,1)
„ 32-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 temperature range
„ RoHS-compliant 8 lead PDIP, SOIC, TSSOP and
8-pad TDFN packages
DESCRIPTION
The CAT25320 is a 32-Kb Serial CMOS EEPROM
device internally organized as 4096x8 bits. This
features a 32-byte page write buffer and supports the
Serial Peripheral Interface (SPI) protocol. The device
is enabled through a Chip Select (C¯¯S) input. In
addition, the required bus signals are 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 CAT25320 device. The
device features software and hardware write protec–
tion, including partial as well as full array protection.
PIN CONFIGURATION
PDIP (L)
SOIC (V)
TSSOP (Y)
TDFN (VP2)
C¯¯S 1
SO 2
8 V_CC
7 H¯¯O¯L¯D¯
¯W¯P¯ 3
6 SCK
V_SS 4
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
FUNCTIONAL SYMBOL
V_CC
SI
CS
WP
HOLD
SCK
CAT25320
SO
V_SS
For Ordering Information details, see page 15.
© 2007 Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. 1111 Rev. E