ACE24AC02A1

Two-wire Serial EEPROM

VER 1.4

3

Block Diagram

Pin Description

A.

Serial Clock (SCL)

The rising edge of this SCL input is to latch data into the EEPROM device while the falling edge of

this clock is to clock data out of the EEPROM device.

B.

Serial Data Line (SDA)

SDA data line is a bi-directional signal for the serial devices. It is an open drain output signal and can

be wired-OR with other open-drain output devices.

Memory Organization

The ACE24AC02A1 devices have 16 pages. Since each page has 16 bytes, random word addressing

to ACE24AC02A1 will require 8 bits data word addresses.

Device Operation

A.

Serial Clock And Data Transitions

The SDA pin is typically pulled to high by an external resistor. Data is allowed to change only when

Serial clock SCL is at VIL. Any SDA signal transition may interpret as either a start or stop condition

as described below.