1
2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1048, Rev. F
H
A
L
O
G
E
N
F
R
E
E
TM
L
E
A
D
F
R
E
E
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
A0
A1
A2
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
VSS
A0
A1
A2
VSS
8
7
6
5
1
2
3
4
A0
A1
A2
VSS
VCC
WP
SCL
SDA
DESCRIPTION
The CAT24FC32A is a 32K-bit Serial CMOS EEPROM
internally organized as 4Kx8 bits. The device is
compatible with Fast-mode I
2
C bus specification and
operates down to 1.8V with a bit rate up to 400 kbit/s.
Extended addressing capability allows up to 8 devices
to share the same bus. Catalyst's advanced CMOS
technology substantially reduces device power
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I
2
C Bus Protocol.
requirements. The device is optimized for high
performance applications, where low power, low voltage
and high speed operation are required.
CAT24FC32A is available in 8-pin DIP, 8-pin SOIC
(JEDEC and EIAJ) and 8-pin TSSOP packages.
PIN CONFIGURATION
BLOCK DIAGRAM
EXTERNAL LOAD
CAT24FC32A
32K-Bit Fast Mode I
2
C Serial CMOS EEPROM
■
Fast mode I
2
C bus compatible*
■
Max clock frequency:
400 kHz for V
CC
=1.8V to 3.6V
■
Hardware write protect for entire array
■
Cascadable for up to eight devices
■
32-Byte page or byte write modes
■
Self-timed write cycle with autoclear
■
5 ms max write cycle time
■
Random and sequential read modes
■
Schmitt trigger and spike suppression at SDA
and SCL inputs
FEATURES
DIP Package (P, L)
SOIC Package (J,W) (K, X)
TSSOP Package (U, Y)
DOUT
ACK
SENSE AMPS
SHIFT REGISTERS
CONTROL
LOGIC
WORD ADDRESS
BUFFERS
START/STOP
LOGIC
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
EEPROM
128 X 256
VCC
COLUMN
DECODERS
XDEC
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
VSS
WP
SCL
A0
A1
A2
SDA
128
256
■
Output slope control to eliminate ground
bounce
■
Zero standby current
■
Commercial temperature range
■
1,000,000 program/erase cycles
■
100 years data retention
■
8-pin PDIP, 8-pin SOIC (150 and 200 mil) and
8-pin TSSOP packages
■
"Green" package options available