ACE24C128B/256B/512B

Two-wire Serial EEPROM

VER 1.4

1

Description

The ACE24C128B/256B/512B provides 131,072/262,144/524,288 bits of serial electrically erasable and

programmable read-only memory (EEPROM), organized as 16,384/32,768/65,536 words of 8 bits each. The device is

optimized for use in many industrial and commercial applications where low-power and low-voltage operation are

essential. The ACE24C128B/256B/512B is available in space-saving 8-lead PDIP, 8-lead SOP, and 8-lead TSSOP

packages and is accessed via a two-wire serial interface. In addition, the ACE24C128B/256B/512B is available in

1.7V (1.7V to 5.5V) version.

Features

 Wide Voltage Operation

 Operating Ambient Temperature: -40℃ to +85℃

 Internally Organized:

- ACE24C128B, 16,384 * 8 (128K bits)

- ACE24C256B, 32,768 * 8 (256K bits)

- ACE24C512B, 65,536 * 8 (512K bits)

 Two-wire Serial Interface

 Schmitt Trigger, Filtered Inputs for Noise Suppression

 Bidirectional Data Transfer Protocol

 1 MHz (5V), 400 KHz (1.7V, 2.5V, 2.7V) Compatibility

 Write Protect Pin for Hardware Data Protection

 64-byte Page (128K, 256K), 128-byte (512K) Write Modes

 Partial Page Writes Allowed

 Self-timed Write Cycle (5 ms max)

 High-reliability

- Endurance: 1 Million Write Cycles

- Data Retention: 100 Years

Absolute Maximum Ratings

DC Supply Voltage

-0.3 to 6.5V

Input / Output Voltage

Operating Ambient Temperature

-40℃ to 85℃

Storage Temperature

-65℃ to 150℃

*Notice: Stresses beyond those listed under

“Absolute Maximum Ratings” may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of this specification are not implied. Exposure to absolute maximum rating conditions for extended

periods may affect device reliability.