CAT93C46
1-Kb Microwire Serial EEPROM
FEATURES
s
High speed operation: 2MHz
s
1.8V to 5.5V supply voltage range
s
Selectable x8 or x16 memory organization
s
Self-timed write cycle with auto-clear
s
Software write protection
s
Power-up inadvertant write protection
s
Low power CMOS technology
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1,000,000 Program/erase cycles
s
100 year data retention
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Industrial temperature ranges
s
RoHS-compliant 8-pin PDIP, SOIC, TSSOP and
DESCRIPTION
The CAT93C46 is a 1K-bit Serial EEPROM memory
device which is configured as either 64 registers of 16
bits (ORG pin at V
CC
) 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.
8-pad TDFN packages
PIN CONFIGURATION
PDIP (L)
SOIC (V, X)
TSSOP (Y)
TDFN (VP2)
CS
SK
DI
DO
1
2
3
4
8
7
6
5
VCC
NC
ORG
GND
NC
VCC
CS
SK
FUNCTIONAL SYMBOL
V
CC
SOIC (W)
ORG
1
2
3
4
8
7
6
5
ORG
GND
DO
DI
CS
SK
DI
CAT93C46
DO
GND
PIN FUNCTIONS
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
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
CATALYST [ CATALYST SEMICONDUCTOR ]
