CAT93C46
1 kb Microwire Serial
EEPROM
Description
The CAT93C46 is a 1 kb Serial EEPROM memory device which is
configured as either 64 registers of 16 bits (ORG pin at V ) or 128
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CC
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.
PDIP−8
L SUFFIX
TSSOP−8
Y SUFFIX
Features
CASE 646AA
CASE 948AL
• High Speed Operation: 2 MHz
• 1.8 V to 5.5 V 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
SOIC−8
SOIC−8
X SUFFIX
TDFN−8
VP2 SUFFIX
CASE 511AK
V, W SUFFIX
CASE 751BD
CASE 751BE
PIN CONFIGURATIONS
V
ORG
GND
DO
CS
SK
DI
NC
1
1
CC
NC
ORG
GND
V
CC
CS
SK
• Industrial Temperature Ranges
• 8−pin PDIP, SOIC, TSSOP and 8−pad TDFN Packages
DO
DI
• This Device is Pb−Free, Halogen Free/BFR Free and RoHS
PDIP (L), SOIC (V, X),
TSSOP (Y),
SOIC (W)
(Top View)
Compliant*
TDFN (VP2)
V
CC
(Top View)
PIN FUNCTION
ORG
CS
SK
Pin Name
Function
DO
CAT93C46
CS
SK
DI
Chip Select
Clock Input
DI
Serial Data Input
Serial Data Output
Power Supply
Ground
DO
GND
V
CC
Figure 1. Functional Symbol
GND
ORG
NC
Memory Organization
No Connection
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Note: When the ORG pin is connected to V , the
CC
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.
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. 6
CAT93C46/D