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CAT93C46
1-kb, 1 MHz @ 4.5 V, 500 kHz @ 2.5 V, 250 kHz @ 1.8 V
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
selfïtimed internal write with autoïclear. Onïchip PowerïOn Reset
circuit protects the internal logic against powering up in the wrong
state.
Features High Speed Operation: 4 MHz (5 V), 2 MHz (1.8 V) 1.8 V (1.65 V*) to 5.5 V Supply V oltage Range Selectable x8 or x16 Memory Organization SelfïTimed Write Cycle with AutoïClear Sequential Read (New Product) Software Write Protection Powerïup Inadvertant Write Protection Low Power CMOS Technology 1,000,000 Program/Erase Cycles 100 Year Data Retention Industrial and Extended Temperature Ranges 8ïpin PDIP, SOIC, TSSOP and 8ïpad UDFN and TDFN Packages This Device is PbïFree, Halogen Free/BFR Free and RoHS
Compliant
Figure 1. Functional Symbol
GND
CAT93C46
VCC
ORG
*CAT93C46xxïxxL (TA = ï20°C to +85°C)
For additional information on our PbïFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://
ORDERING INFORMATION
PIN CONFIGURATIONS
GND
VCC 1
ORG
PDIP (L), SOIC (V, X),
TSSOP (Y), UDFN (HU4),
TDFN (VP2)**
(Top View)
Chip SelectCS
Clock InputSK
Serial Data InputDI
Serial Data OutputDO
Power SupplyVCC
GroundGND
FunctionPin Name
PIN FUNCTION
Memory OrganizationORG
No ConnectionNC
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.
SOICï8
V, W** SUFFIX
CASE 751BD
PDIPï8
L SUFFIX
CASE 646AA
TDFNï8**
VP2 SUFFIX
CASE 511AK
TSSOPï8
Y SUFFIX
CASE 948AL
SOICï8
X SUFFIX
CASE 751BE
GND
ORG
VCC 1
SOIC (W)**
(Top View)
UDFNï8
HU4 SUFFIX
CASE 517AZ
** Not recommended for new designs.
