CAT93C66LIG datasheet(1/16 Pages) ONSEMI

Part #	CAT93C66LIG

Description	4 kb Microwire Serial CMOS EEPROM

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Manufacturer	ONSEMI [ON Semiconductor]

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April, 2012 − Rev. 11

1

Publication Order Number:

CAT93C66/D

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 self−timed internal write with auto−clear. On−chip

Power−On 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

• Self−timed Write Cycle with Auto−clear

• Sequential Read

• Software Write Protection

• Power−up Inadvertent Write Protection

• Low Power CMOS Technology

• 1,000,000 Program/Erase Cycles

• 100 Year Data Retention

• Industrial and Extended Temperature Ranges

• 8−lead PDIP, SOIC, TSSOP, 6−lead SOT−23, 8−pad TDFN and

UDFN Packages

• These Devices are Pb−Free, Halogen Free/BFR Free, and RoHS

Compliant

ORG

DO

CAT93C66

SK

GND

VCC

Figure 1. Functional Symbols

DI

CS

DO

CAT93W66

SK

GND

VCC

DI

CS

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 pull−up

device will select the x16 organization.

CAT93W66:

The device works in x16 mode only.

http://onsemi.com

PIN CONFIGURATION

DO

DI

SK

CS

See detailed ordering and shipping information in the package

dimensions section on page 16 of this data sheet.

ORDERING INFORMATION

SOIC−8

V, W* SUFFIX

CASE 751BD

PDIP (L), SOIC (V, X),

TSSOP (Y), TDFN (VP2)*,

UDFN (HU4)

PDIP−8

L SUFFIX

CASE 646AA

TSSOP−8

Y SUFFIX

CASE 948AL

SOIC−8

X SUFFIX

CASE 751BE

* Not recommended for new designs

** CAT93C66 available in SOT−23 6−pin for x8

Organization. Contact factory for availability.

GND

ORG

NC

VCC

SK

CS

VCC

NC 1

DI

DO

GND

ORG

SOIC (W)*

SOT23−6

TB SUFFIX

CASE 527AJ

DI

GND

DO 1

SK

CS

VCC

SOT−23 (TB)**

2

3

6

5

4

2

3

4

8

7

6

5

1

2

3

4

8

7

6

5

TDFN (VP2)

CAT93W66

DO

DI

SK

CS

GND

NC

VCC

1

2

3

4

8

7

6

5

UDFN−8

HU4 SUFFIX

CASE 517AZ

TDFN−8*

VP2 SUFFIX

CASE 511AK

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