Статьи и обзоры --> Память

In the past, engineers have struggled to use Flash memory for data storage applications. The traditional Flash memory devices, with their large page sizes of 4K to 128K bytes, make it difficult to change a few bytes. Typically, system designers must include external RAM buffers to shadow the Flash memory page’s contents to make the data modifications.

The Microchip Technology Inc. 25AA02E48 is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input.