H
CAT93C46 (Die Rev. H)
EE
GEN FR
ALO
1K-Bit Microwire Serial EEPROM
LE
CAT93C46 Die Revision H not recommended for new designs. See CAT93HC46 data sheet.
A D F R E ETM
FEATURES
■ High speed operation: 1MHz
■ Power-up inadvertant write protection
■ Low power CMOS technology
■ 1,000,000 Program/erase cycles
■ 1.8 to 6.0 volt operation
■ 100 year data retention
■ Selectable x8 or x16 memory organization
■ Commercial, industrial and automotive
temperature ranges
■ Self-timed write cycle with auto-clear
■ “Green” package option available
■ Hardware and software write protection
DESCRIPTION
The CAT93C46 is a 1K-bit Serial EEPROM memory
device which is configured as either registers of 16 bits
(ORG pin at VCC) or 8 bits (ORG pin at GND). Each
register can be written (or read) serially by using the
DI (or DO) pin. The CAT93C46 is manufactured using
Catalyst’s advanced CMOS EEPROM floating gate
technology. The device is designed to endure 1,000,000
program/erase cycles and has a data retention of 100
years. The device is available in 8-pin DIP, 8-pin SOIC,
8-pin TSSOP and 8-pad TDFN packages.
PIN CONFIGURATION
FUNCTIONAL SYMBOL
CS
SK
1
DI
DO
3
8
7
6
5
2
4
VCC
SOIC Package (J,W)
DIP Package (P, L)
VCC
NC
ORG
CS
SK
GND
8
7
6
5
1
2
3
4
NC
VCC
ORG
GND
DO
DI
ORG
DI
CS
DO
SK
NC
SOIC Package (S,V)
SOIC Package (K,X)
CS
1
8
VCC
CS
1
8
VCC
SK
DI
DO
2
3
4
7
6
5
NC
ORG
GND
SK
DI
DO
2
3
4
7
6
5
NC
ORG
GND
GND
PIN FUNCTIONS
Pin Name
Function
CS
1
2
8
7
DI
3
4
6
5
DO
TDFN Package (RD4, ZD4)
VCC 8
1 CS
NC 7
2 SK
ORG 6
3 DI
GND 5
4 DO
Bottom View
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice.
VCC
NC
ORG
GND
Clock Input
DI
Serial Data Input
DO
Serial Data Output
VCC
+1.8 to 6.0V Power Supply
GND
CS
SK
Chip Select
SK
TSSOP Package (U,Y)
Ground
ORG
Memory Organization
NC
No Connection
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 an internal pullup
device will select the x16 organization.
Doc. No. 1087, Rev. L
