CAT93C46
1-Kb Microwire Serial EEPROM
FEATURES
DESCRIPTION
■ High speed operation: 2MHz
The CAT93C46 is a 1K-bit Serial EEPROM memory
device which is configured as either 64 registers of 16
bits (ORG pin at VCC) or 128 registers of 8 bits (ORG pin
at GND). Each register can be written (or read) serially
by using the DI (or DO) pin. The CAT93C46 features a
self-timed internal write with auto-clear. On-chip Power-
On Reset circuit protects the internal logic against
powering up in the wrong state.
■ 1.8V to 5.5V supply voltage range
■ Selectable x8 or x16 memory organization
■ Self-timed write cycle with auto-clear
■ 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
For Ordering Information details, see page 13.
■ RoHS-compliant 8-pin PDIP, SOIC, TSSOP and
8-pad TDFN packages
PIN CONFIGURATION
FUNCTIONAL SYMBOL
PDIP (L)
SOIC (V, X)
TSSOP (Y)
VCC
SOIC (W)
TDFN (VP2)
ORG
CS
1
8
V
NC
1
8
ORG
CC
CAT93C46
CS
SK
DI
DO
SK
DI
2
3
4
7
6
5
NC
V
2
3
4
7
6
5
GND
DO
DI
CC
CS
ORG
GND
DO
SK
GND
PIN FUNCTIONS
Pin Name
Function
Chip Select
Clock Input
Serial Data Input
CS
SK
DI
DO
VCC
GND
ORG
NC
Serial Data Output
Power Supply
Ground
Memory Organization
No Connection
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 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1106, Rev. F
1