Advanced
CAT25C03/05/09/17/33
2K/4K/8K/16K/32K 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, 16-Pin SOIC and 14-Pin TSSOP
■ Page Write Buffer
■ Low Power CMOS Technology
■ SPI Modes (0,0 &1,1)
■ Write Protection
– Protect First Page, Last Page, Any 1/4 Array
or Lower 1/2 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 CAT25C03/05/09/17/33 is de-
signed with software and hardware write protection
features. The device is available in 8-pin DIP, 8-pin
SOIC, 16-pin SOIC, 8-pin TSSOP and 14-pin TSSOP
packages.
TheCAT25C03/05/09/17/33isa2K/4K/8K/16K/32K-Bit
SPI Serial CMOS E2PROM internally organized as
256x8/512x8/1024x8/2048x8/4096x8 bits. Catalyst’s
advanced CMOS Technology substantially reduces de-
vice power requirements. The CAT25C03/05 features a
16-byte page write buffer. The 25C09/17/33 features a
32-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
PIN CONFIGURATION
SOIC Package (S)
SOIC Package (S16)
DIP Package (P)
TSSOP Package (U)
TSSOP Package (U14)
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
V
16
CS
SO
WP
1
2
3
4
5
6
7
8
VCC
HOLD
NC
CC CS
CC
14
13
12
11
10
9
8
1
2
3
4
5
6
7
VCC
HOLD
NC
NC
NC
CS
SO
CS
SO
NC
NC
NC
WP
1
2
3
4
8
7
6
5
CS
SO
V
CC
HOLD
SCK
SI
SO
HOLD
15
14
13
12
11
10
9
HOLD
SCL
SI
WP
NC
NC
NC
NC
WP
VSS
SCK
WP
V
SS
V
V
NC
SI
SS
SS
NC
SCK
SI
V
SS
NC
BLOCK DIAGRAM
SCK
SI
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
WORD ADDRESS
BUFFERS
PIN FUNCTIONS
Pin Name
SO
Function
SO
SI
Serial Data Output
Serial Clock
I/O
CONTROL
SCK
WP
E2PROM
ARRAY
CS
SPI
CONTROL
LOGIC
XDEC
Write Protect
WP
HOLD
SCK
VCC
+1.8V to +6.0V Power Supply
Ground
VSS
BLOCK
PROTECT
LOGIC
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
© 1998 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 25068-00 2/98
1