Advanced Information
CAT25C01/02/04/08/16
1K/2K/4K/8K/16K SPI Serial CMOS E2PROM
FEATURES
■ 1,000,000 Program/Erase Cycles
■ 100 Year Data Retention
■ 10 MHz SPI Compatible
■ 1.8 to 6.0 Volt Operation
■ Hardware and Software Protection
■ Zero Standby Current
■ Self-Timed Write Cycle
■ 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 E2PROM Array
■ Commercial, Industrial and Automotive
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
serial sequence. The CAT25C01/02/04/08/16 is de-
signed 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 E2PROM internally organized as
128x8/256x8/512x8/1024x8/2048x8 bits.Catalyst’sad-
vanced CMOS Technology substantially reduces de-
vice power requirements. The CAT25C01/02/04 fea-
tures a 16-byte page write buffer. The 25C08/16 fea-
tures a 32-byte page write buffer.The device operates
via the SPI bus serial interface and is enabled though a
ChipSelect(CS).InadditiontotheChipSelect,theclock
PIN CONFIGURATION
TSSOP Package (U14)
DIP Package (P)
TSSOP Package (U)
SOIC Package (S)
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
V
CS
SO
CS
SO
CS
SO
WP
CC
V
CC
CC
14
13
12
11
10
9
8
1
2
3
4
5
6
7
VCC
HOLD
NC
NC
NC
CS
SO
NC
NC
NC
WP
HOLD
SCK
SI
HOLD
SCL
SI
HOLD
SCK
SI
WP
WP
V
SS
V
SS
V
SS
BLOCK DIAGRAM
SCK
SI
MSOP Package (R)*
SENSE AMPS
SHIFT REGISTERS
V
SS
1
2
3
4
8
7
6
5
CS
SO
WP
V
CC
HOLD
SCK
V
SI
SS
COLUMN
DECODERS
WORD ADDRESS
BUFFERS
*CAT 25C01/02 only
PIN FUNCTIONS
SO
SI
I/O
CONTROL
Pin Name
SO
Function
Serial Data Output
Serial Clock
E2PROM
ARRAY
CS
SPI
CONTROL
LOGIC
XDEC
WP
SCK
WP
HOLD
SCK
Write Protect
BLOCK
PROTECT
LOGIC
VCC
+1.8V to +6.0V Power Supply
Ground
VSS
DATA IN
STORAGE
CS
Chip Select
SI
Serial Data Input
Suspends Serial Input
No Connect
HIGH VOLTAGE/
TIMING CONTROL
HOLD
NC
STATUS
REGISTER
25C128 F02
© 1999 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 25067-00 5/00
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