The 25AA040A-I/MS is an IC (integrated circuit) component manufactured by Microchip Technology. It is a 4K-bit SPI (Serial Peripheral Interface) Serial EEPROM (Electrically Erasable Programmable Read-Only Memory). Here's an overview of its key features:
1. Memory Capacity: The 25AA040A-I/MS has a memory capacity of 4K bits or 512 bytes. It is organized as 256 pages, each containing 16 bytes. The EEPROM architecture allows individual bytes to be read, written, or erased, providing flexible data storage options.
2. SPI Interface: The IC employs a 3-wire SPI serial interface that supports communication speeds of up to 10 MHz. It uses a Master/Slave configuration, where a microcontroller or another IC can act as the master, initiating communication with the 25AA040A-I/MS.
3. Single-Supply Voltage: The IC operates with a single supply voltage ranging from 1.8V to 5.5V. This voltage flexibility allows integration into various systems and provides low power consumption options.
4. Write Protection: The 25AA040A-I/MS offers hardware and software write protection options. It has a Write Protect (WP) pin that, when activated, prevents any write or erase operation. Additionally, software commands can be used to enable or disable write protection
