© 2007 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

1

Doc. No. 1106, Rev. F

CAT93C46

1-Kb Microwire Serial EEPROM

FEATURES

8-pad TDFN packages

PIN CONFIGURATION

PDIP (L)

SOIC (V, X)

TSSOP (Y)

TDFN (VP2)

SOIC (W)

DESCRIPTION

The CAT93C46 is a 1K-bit Serial EEPROM memory

device which is configured as either 64 registers of 16

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.

FUNCTIONAL SYMBOL

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.

CS

SK

DI

ORG

DO

CAT93C46

GND

PIN FUNCTIONS

Pin Name

Function

CS

Chip Select

SK

Clock Input

DI

Serial Data Input

DO

Serial Data Output

Power Supply

GND

Ground

ORG

Memory Organization

NC

No Connection

8

7

6

5

VCC

NC

ORG

GND

DI

CS

SK

DO

1

2

3

4

8

7

6

5

ORG

GND

DO

DI

CS

NC

VCC

SK

1

2

3

4

For Ordering Information details, see page 13.