E
CAT25C01/02/04/08/16
1K/2K/4K/8K/16K SPI Serial CMOS EEPROM
TM
FEATURES
■ 1,000,000 program/erase cycles
■ 100 year data retention
■ Self-timed write cycle
■ 10 MHz SPI compatible
■ 1.8 to 6.0 volt operation
■ Hardware and software protection
■ Zero standby current
■ 8-pin DIP/SOIC, 8/14-pin TSSOP and 8-pin MSOP
■ 16/32-byte page write buffer
■ Low power CMOS technology
■ SPI modes (0,0 & 1,1)*
■ Block write protection
– Protect 1/4, 1/2 or all of EEPROM array
■ Commercial, industrial, automotive and
extended temperature ranges
DESCRIPTION
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
serialsequence.TheCAT25C01/02/04/08/16isdesigned
with software and hardware write protection features
including Block Write protection. The device is available
in 8-pin DIP, 8-pin SOIC, 8-pin MSOP and 8/14-pin
TSSOP packages.
The CAT25C01/02/04/08/16 is a 1K/2K/4K/8K/16K Bit
SPI Serial CMOS EEPROM internally organized as
128x8/256x8/512x8/1024x8/2048x8 bits. Catalyst’s
advanced CMOS Technology substantially reduces
device power requirements. The CAT25C01/02/04
features a 16-byte page write buffer. The 25C08/16
featuresa32-bytepagewritebuffer.Thedeviceoperates
via the SPI bus serial interface and is enabled though a
ChipSelect(CS).InadditiontotheChipSelect,theclock
PIN CONFIGURATION
TSSOP Package (U14, Y)
SOIC Package (S, V)
DIP Package (P, L)
TSSOP Package (U, Y)
1
2
3
4
5
6
7
14
13
12
11
10
9
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
CS
SO
NC
NC
V
1
2
3
4
8
7
6
5
V
V
CS
CC
CS
SO
CS
SO
WP
CC
V
CC
CC
HOLD
SO
HOLD
SCK
SI
HOLD
SCK
SI
HOLD
SCK
SI
NC
WP
WP
NC
V
SS
V
SS
V
SS
NC
NC
WP
SCK
SI
V
BLOCK DIAGRAM
SS
8
MSOP Package (R, Z)*
SENSE AMPS
SHIFT REGISTERS
1
2
3
4
8
7
6
5
CS
SO
WP
V
CC
HOLD
SCK
V
SI
SS
COLUMN
DECODERS
WORD ADDRESS
BUFFERS
*CAT25C01/02 only
PIN FUNCTIONS
Pin Name
SO
Function
SO
SI
I/O
CONTROL
Serial Data Output
Serial Clock
E2PROM
ARRAY
CS
SCK
WP
SPI
CONTROL
LOGIC
XDEC
WP
HOLD
SCK
Write Protect
VCC
+1.8V to +6.0V Power Supply
Ground
BLOCK
PROTECT
LOGIC
VSS
CS
Chip Select
DATA IN
STORAGE
SI
Serial Data Input
Suspends Serial Input
No Connect
HOLD
NC
HIGH VOLTAGE/
TIMING CONTROL
STATUS
REGISTER
25C128 F02
*Other SPI modes available on request.
© 2002 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1016, Rev. H
1