25AA040/25LC040/25C040 is a 4K bit serial Electrically Eras- able PROM produced by Microchip Technology Inc.. It has low power CMOS technology, 512x8 bit organization, 16 byte page, self-timed erase and write cycles, etc.
This document describes the Microchip Technology Inc. 25AA040/25LC040/25C040 (collectively referred to as '25xx040'), a 4K bit serial Electrically Erasable PROM. The device is accessed via a Serial Peripheral Interface (SPI) compatible bus, requiring clock input (SCK), separate data in (SI) and data out (SO) lines, and chip select (CS). Communication can be paused using the HOLD pin, and write operations can be disabled via the Write Protect (WP) pin.
The datasheet details electrical characteristics including maximum ratings, AC test conditions, and DC parameters for Commercial, Industrial, and Automotive temperature ranges. It provides specific timing diagrams for hold, serial input, and serial output operations, along with a comprehensive list of features such as low power consumption, self-timed erase/write cycles, block write protection, and high endurance (10M cycles guaranteed).
| Memory Organization | 512 x 8 bit |
|---|---|
| Write Cycle Time (Max) | 5 ms |
| Endurance | 10M cycles |
| Data Retention | > 200 years |
| ESD Protection | > 4000 V |
The device supports Commercial (0°C to +70°C), Industrial (-40°C to +85°C), and Automotive (-40°C to +125°C) ranges.
The typical write current is 3 mA.