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CAT93C46 Datasheet PDF : 13 Pages
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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 VCC) 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.
Features
• 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
• Industrial Temperature Ranges
• 8−pin PDIP, SOIC, TSSOP and 8−pad TDFN Packages
• This Device is Pb−Free, Halogen Free/BFR Free and RoHS
Compliant*
VCC
ORG
CS
SK
DI
DO
CAT93C46
GND
Figure 1. Functional Symbol
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
PDIP−8
L SUFFIX
CASE 646AA
TSSOP−8
Y SUFFIX
CASE 948AL
SOIC−8
V, W SUFFIX
CASE 751BD
SOIC−8
X SUFFIX
CASE 751BE
TDFN−8
VP2 SUFFIX
CASE 511AK
PIN CONFIGURATIONS
CS
1
SK
DI
DO
VCC NC
1
NC VCC
ORG CS
GND SK
ORG
GND
DO
DI
PDIP (L), SOIC (V, X),
TSSOP (Y),
TDFN (VP2)
(Top View)
SOIC (W)
(Top View)
PIN FUNCTION
Pin Name
Function
CS
Chip Select
SK
Clock Input
DI
Serial Data Input
DO
Serial Data Output
VCC
GND
Power Supply
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 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
October, 2009 − Rev. 6
Publication Order Number:
CAT93C46/D
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