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FM93C86A Rev. C.1

July 2000

© 2000 Fairchild Semiconductor International

FM93C86A

16K-Bit Serial CMOS EEPROM

(MICROWIRE™ Synchronous Bus)

General Description

FM93C86A is a 16,384-bit CMOS non-volatile EEPROM orga-

nized as 1024 x 16-bit array. This device features MICROWIRE

interface which is a 4-wire serial bus with chipselect (CS), clock

(SK), data input (DI) and data output (DO) signals. This interface

is compatible to many of standard Microcontrollers and Micropro-

cessors. This device offers a pin (ORG), using which, the user can

select the format of the data (16-bit or 8-bit). If ORG is tied to GND,

bit format is selected. There are 7 instructions implemented on the

FM93C86A for various Read, Write, Erase, and Write Enable/

Disable operations. This device is fabricated using Fairchild

Semiconductor floating-gate CMOS process for high reliability,

high endurance and low power consumption.

“LZ” and “L” versions of FM93C86A offer very low standby current

making them suitable for low power applications. This device is

offered in both SO and DIP packages.

Functional Diagram

Features

I Wide V

I User selectable organization

x16 (ORG = 1)

x8 (ORG = 0)

I Typical active current of 200µA

10

µA standby current typical

1

µA standby current typical (L)

0.1

µA standby current typical (LZ)

I No Erase instruction required before Write instruction

I Self timed write cycle

I Device status during programming cycles

I 40 year data retention

I Endurance: 1,000,000 data changes

I Packages available: 8-pin SO and 8-pin DIP

INSTRUCTION

DECODER

CONTROL LOGIC

AND CLOCK

GENERATORS

HIGH VOLTAGE

GENERATOR

AND

PROGRAM

TIMER

INSTRUCTION

REGISTER

ADDRESS

REGISTER

EEPROM ARRAY

READ/WRITE AMPS

DATA IN/OUT REGISTER

16/8 BITS

DECODER

16

16

DATA OUT BUFFER

CS

SK

DI

ORG

DO