CAT93C46R
1 kb Microwire Serial
EEPROM
Description
The CAT93C46R is a 1 kb CMOS Serial EEPROM device which is
organized as either 64 registers of 16 bits or 128 registers of 8 bits, as
determined by the state of the ORG pin. The CAT93C46R 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.
http://onsemi.com
In contrast to the CAT93C46, the CAT93C46R features an internal
instruction clock counter which provides improved noise immunity
for Write/Erase commands.
PDIP−8
L SUFFIX
CASE 646AA
TSSOP−8
Y SUFFIX
CASE 948AL
Features
• High Speed Operation: 4 MHz @ 5 V, 2 MHz @ 1.8 V
• 1.8 V to 5.5 V Supply Voltage Range
• Selectable x8 or x16 Memory Organization
• Sequential Read
SOIC−8
V SUFFIX
CASE 751BD
SOIC−8
X SUFFIX
CASE 751BE
TDFN−8
VP2 SUFFIX
CASE 511AK
• Software Write Protection
PIN CONFIGURATIONS
• Power−up Inadvertant Write Protection
• Low Power CMOS Technology
• 1,000,000 Program/Erase Cycles
• 100 Year Data Retention
V
ORG
GND
DO
CS
SK
DI
NC
1
1
CC
NC
ORG
GND
V
CC
CS
SK
DO
DI
• Industrial Temperature Range
PDIP (L), SOIC (V, X),
TSSOP (Y),
SOIC (W)
• 8−pin PDIP, SOIC, TSSOP and 8−pad TDFN Packages
• This Device is Pb−Free, Halogen Free/BFR Free and RoHS
TDFN (VP2)
(Top Views)
Compliant*
V
CC
PIN FUNCTION
Pin Name
Function
CS
SK
DI
Chip Select
ORG
CS
SK
DI
DO
Clock Input
CAT93C46R
Serial Data Input
Serial Data Output
Power Supply
Ground
DO
V
CC
GND
GND
ORG
NC
Memory Organization
No Connection
Figure 1. Functional Symbol
Note: When the ORG pin is connected to V , the
CC
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
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 pull−up device will
select the x16 organization.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
©
Semiconductor Components Industries, LLC, 2009
1
Publication Order Number:
October, 2009 − Rev. 7
CAT93C46R/D