IS24C16

Integrated Silicon Solution, Inc.

1

10/03/97

This document contains ADVANCE INFORMATION data. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible

product. We assume no responsibility for any errors which may appear in this publication. © Copyright 1997, Integrated Silicon Solution, Inc.

IS24C16

16,384-BIT SERIAL ELECTRICALLY

ERASABLE PROM

FEATURES

• Low power CMOS

– Active current less than 3.0 mA

– Standby current less than 35

µA

• Hardware write protection

– Write control pin

• Internally organized as eight banks

– 256 pages x 8 bytes

• Two-wire serial interface

— Bidirectional data transfer protocol

• Flexible byte write and 16-byte page-write

modes

• High-reliability

– Endurance: 100,000 cycles per byte

– Data retention: 100 years

• Automatic word address incrementing

— Sequential register read

• Filtered inputs for noise suppression

• 8-pin PDIP or SOIC packages

OVERVIEW

The IS24C16 is a low cost, low power, low voltage

serial EEPROM and organized as 2,048 x 8 bits. The

memory is configured as 128 pages of 16 bytes each. It is

fabricated using

nology and operates from a single supply.

The IS24C16 is internally organized as a 256 x 8 memory

bank. The IS24C16 features a serial interface and soft-

ware protocol allowing operation on a simple 2-wire bus.

Included is a bidirectional serial data bus synchronized by

a clock offering flexible byte write and a faster 16-byte

page write. A write protect pin can protect data in the upper

quadrant of memory.

ADVANCE INFORMATION

OCTOBER 1997

PIN CONFIGURATION

8-Pin DIP and SOIC

PIN DESCRIPTIONS

Serial Clock (SCL) - The SCL input is used to clock all data

into and out of the device. In the WRITE mode, data must

remain stable when SCL is HIGH. In the READ mode, data

is clocked out on the falling edge of SCL.

Serial Data (SDA) - The SDA pin is a bidirectional pin used

to transfer data into and out of the device. Data may

change only when SCL is LOW. It is an open-drain output,

and may be wire-ORed with any number of open-drain or

open-collector outputs.

A0, A1, and A2: These pins are not connected.

Write Control (

WC

WC

WC

WC

WC) - The Write Control input is used to

disable any attempt to write to the memory. When HIGH,

the upper half of array is protected against write opera-

tions; when LOW, the write function is normal. The part can

be read independent of the state of

WC pin. When not

connected this pin will be pulled LOW.

1

2

3

4

8

7

6

5

A0

A1

A2

GND

VCC

WC

SCL

SDA

PIN DESCRIPTIONS

A0-A2

Address Inputs (No connection)

SDA

Serial Data I/O

SCL

Serial Clock Input

WC

Write Control Input

Vcc

Power

GND

Ground