CAT25010/20/40
1K/2K/4K SPI Serial CMOS EEPROM
FEATURES
s
10 MHz SPI compatible
s
1.8 to 6.0 volt operation
s
Hardware and software protection
s
Low power CMOS technology
s
SPI modes (0,0 & 1,1)*
s
Commercial, industrial, automotive and extended
s
1,000,000 program/erase cycles
s
100 year data retention
s
Self-timed write cycle
H
GEN
FR
ALO
EE
LE
A
D
F
R
E
E
TM
s
8-Pin DIP/SOIC, 8-Pin TSSOP and 8-Pin MSOP
s
16-byte page write buffer
s
Block write protection
temperature ranges
– Protect 1/4, 1/2 or all of EEPROM array
DESCRIPTION
The CAT25010/20/40 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
CAT25010/20/40 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 CAT25010/
20/40 is designed 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-pin TSSOP packages.
PIN CONFIGURATION
SOIC Package (S, V)
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
BLOCK DIAGRAM
MSOP Package (R, Z)*
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
SENSE AMPS
SHIFT REGISTERS
*CAT 25010/20 only
DIP Package (P, L)
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
TSSOP Package (U, Y)
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
SO
SI
CS
WP
HOLD
SCK
I/O
CONTROL
SPI
CONTROL
LOGIC
BLOCK
PROTECT
LOGIC
CONTROL LOGIC
XDEC
E
2
PROM
ARRAY
PIN FUNCTIONS
Pin Name
SO
SCK
WP
V
CC
V
SS
CS
SI
HOLD
NC
Function
Serial Data Output
Serial Clock
Write Protect
+1.8V to +6.0V Power Supply
Ground
Chip Select
Serial Data Input
Suspends Serial Input
No Connect
DATA IN
STORAGE
HIGH VOLTAGE/
TIMING CONTROL
STATUS
REGISTER
25C128 F02
* Other SPI modes available on request.
Doc. No. 1006, Rev. L
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
CATALYST [ CATALYST SEMICONDUCTOR ]
