ACE93C46

Three-wire Serial EEPROM

VER 1.2

1

 

Description

The ACE93C46 provides 1024 bits of serial electrically erasable programmable read only memory (EEPROM)

organized as 64 words of 16 bits each, when the ORG pin is connected to VCC and 128 words of 8 bits each when it is

tied to ground. The ACE93C46 is available in space-saving 8-lead PDIP, 8-lead TSSOP and 8-lead JEDEC SOIC

packages. The ACE93C46 is enabled through the Chip Select pin (CS), and accessed via a 3-wire serial interface

consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the

address is decoded and the data is clocked out serially on the data output pin DO. The WRITE cycle is completely

self-timed and no separate erase cycle is required before write. The Write cycle is only enabled when it is in the

Erase/Write Enable state. When CS is brought “high” following the initiation of a write cycle, the DO pin outputs the

Ready/Busy status.

Features

Low-voltage operation – 1.8 (VCC=1.8 to 5.5V)

Three-wire serial Interface

2MHz clock rate(5V) compatibility

Self-timed write cycle (5 ms max)

High-reliability – Endurance: 1 Million write cycles

Data retention: 100 Years

8-lead PDIP, SOP-8, TSSOP-8 Packages

Packaging Type

DIP-8

SOP-8

TSSOP-8

Pin Configurations

Pin Name

Function

CS

Chip select

SK

Serial Data Clock

DI

Serial Data Input

DO

Serial Data Output

GND

Ground

Vcc

Power Supply

ORG

Internal Organization

DC

Don’t Connect