Using C30 compiler to interface serial SRAM devices to dsPIC33F and PIC24F

Microchip's serial SRAM product line represents a new way to add additional RAM to an application. With the small, 8-pin packages and the SPI, these devices give designers added system flexibility. The 23XXXX series of serial SRAM devices from Microchip Technology support a half-duplex protocol that functions on a master-slave paradigm that is ideally suited to data stream applications.

The bus is controlled by the microcontroller (master), which accesses the 23XXXX using the SPI peripheral built into the MCU. The SPI bus can operate at speeds up to 20 MHz for enhanced throughput. Communications can be paused using the HOLD pin.

This application note is part of a series that provide source code to help the user implement the protocol with minimal effort.

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