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CAT93C66_12 Datasheet, PDF (1/16 Pages) ON Semiconductor – 4 kb Microwire Serial CMOS EEPROM Self−timed Write Cycle with Auto−clear | |||
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CAT93C66, CAT93W66
4 kb Microwire Serial CMOS
EEPROM
Description
The CAT93C66 is a 4 kb CMOS Serial EEPROM device which is
organized as either 256 registers of 16 bits (ORG pin at VCC) or 512
registers of 8 bits (ORG pin at GND). The CAT93W66 features x16
memory organization only. Each register can be written (or read)
serially by using the DI (or DO) pin. The device features sequential
read and selfâtimed internal write with autoâclear. Onâchip
PowerâOn Reset circuitry 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 to 5.5 V Supply Voltage Range
⢠Selectable x8 or x16 Memory Organization: CAT93C66
⢠Selfâtimed Write Cycle with Autoâclear
⢠Sequential Read
⢠Software Write Protection
⢠Powerâup Inadvertent Write Protection
⢠Low Power CMOS Technology
⢠1,000,000 Program/Erase Cycles
⢠100 Year Data Retention
⢠Industrial and Extended Temperature Ranges
⢠8âlead PDIP, SOIC, TSSOP, 6âlead SOTâ23, 8âpad TDFN and
UDFN Packages
⢠These Devices are PbâFree, Halogen Free/BFR Free, and RoHS
Compliant
VCC
VCC
ORG
CS
CS
CAT93C66
DO SK
CAT93W66
DO
SK
DI
DI
GND
GND
Figure 1. Functional Symbols
CAT93C66 Selectable Organization:
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 pullâup
device will select the x16 organization.
CAT93W66:
The device works in x16 mode only.
http://onsemi.com
SOICâ8
V, W* SUFFIX
CASE 751BD
UDFNâ8
HU4 SUFFIX
CASE 517AZ
TDFNâ8*
VP2 SUFFIX
CASE 511AK
PDIPâ8
L SUFFIX
CASE 646AA
TSSOPâ8
Y SUFFIX
CASE 948AL
SOICâ8
X SUFFIX
CASE 751BE
SOT23â6
TB SUFFIX
CASE 527AJ
PIN CONFIGURATION
CS 1
SK 2
DI 3
DO 4
8 VCC
7 NC
6 ORG
5 GND
NC 1
VCC 2
CS 3
SK 4
8 ORG
7 GND
6 DO
5 DI
PDIP (L), SOIC (V, X),
SOIC (W)*
TSSOP (Y), TDFN (VP2)*,
UDFN (HU4)
DO 1 6 VCC
CS 1
SK 2
DI 3
DO 4
8 VCC
7 NC
6 NC
5 GND
GND 2 5 CS
DI 3 4 SK
SOTâ23 (TB)**
TDFN (VP2)
CAT93W66
* Not recommended for new designs
** CAT93C66 available in SOTâ23 6âpin for x8
Organization. Contact factory for availability.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
April, 2012 â Rev. 11
Publication Order Number:
CAT93C66/D
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