CAT93C56_07 Datasheet, PDF (1/18 Pages) Catalyst Semiconductor – 2-Kb Microwire Serial CMOS EEPROM

CAT93C56, CAT93C57
2-Kb Microwire Serial CMOS EEPROM
FEATURES
„ High speed operation: 2MHz
„ 1.8V to 5.5V supply voltage range
„ Selectable x8 or x16 memory organization
„ Sequential read
„ Software write protection
„ Power-up inadvertant write protection
„ Low power CMOS technology
„ 1,000,000 Program/erase cycles
„ 100 year data retention
„ Industrial temperature ranges
„ RoHS-compliant 8-pin PDIP, SOIC, TSSOP and
8-pad TDFN packages
DESCRIPTION
The CAT93C56/57 is a 2-Kb CMOS Serial EEPROM
device which is organized as either 128 registers of 16
bits (ORG pin at V_CC) or 256 registers of 8 bits (ORG pin
at GND). Each register can be written (or read) serially
by using the DI (or DO) pin. The CAT93C56/57 features
sequential read and self-timed internal write with auto-
clear. On-chip Power-On Reset circuitry protects the
internal logic against powering up in the wrong state.
For Ordering Information details, see page 16.
PIN CONFIGURATION
PDIP (L)
SOIC (V, X)
TSSOP (Y)
TDFN (VP2, ZD4*)
SOIC (W*)
CS 1
SK 2
DI 3
DO 4
8 V_CC
7 NC
6 ORG
5 GND
NC 1
V_CC 2
CS 3
SK 4
8 ORG
7 GND
6 DO
5 DI
* TDFN 3x3mm (ZD4) and SOIC (W) rotated pin-out packages are
available for CAT93C57 and CAT93C56, Rev. E only (not
recommended for new designs of CAT93C56)
PIN FUNCTION
Pin Name
CS
SK
DI
DO
V_CC
GND
ORG
NC
Function
Chip Select
Clock Input
Serial Data Input
Serial Data Output
Power Supply
Ground
Memory Organization
No Connection
FUNCTIONAL SYMBOL
V_CC
ORG
CS
SK
DI
CAT93C56
DO
CAT93C57
GND
Note: When the ORG pin is connected to VCC, the x16 organization
is selected. When it is connected to ground, the x8 pin is selected. If
the ORG pin is left unconnected, then am internal pullup device will
select the x16 organization
© Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. MD-1088 Rev. P