CAT93C66_07 Datasheet, PDF (1/17 Pages) Catalyst Semiconductor – 4-Kb Microwire Serial CMOS EEPROM

CAT93C66
4-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 CAT93C66 is a 4-Kb CMOS Serial EEPROM
device which is organized as either 256 registers of 16
bits (ORG pin at V_CC) or 512 registers of 8 bits (ORG
pin at GND). Each register can be written (or read)
serially by using the DI (or DO) pin. The CAT93C66
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 15.
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) package is available only for Die Rev E
(not recommended for new designs)
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
CAT93C66
DO
SK
DI
GND
Note: When the ORG pin is connected to VCC, the x16 organization
is selected. When it is connected to ground, the x8 organization is
selected. If the ORG pin is left unconnected, then an internal pullup
device will select the x16 organization
© 2007 Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. 1089 Rev. P