23A256-I/P

The Microchip Technology 23A256-I/P is a 256 Kbit Serial SRAM device designed for efficient data storage and retrieval. It utilizes a Serial Peripheral Interface (SPI) compatible serial bus, requiring SCK, SI, and SO lines for communication, controlled by a Chip Select (CS) input. This device supports flexible operating modes including byte read/write, page mode (32 Byte Page), and sequential mode for both reads and writes.

Key electrical specifications include a maximum clock frequency of 20 MHz and an operating voltage range of 1.7V to 1.95V. It is built with low-power CMOS technology, offering a read current of 3 mA at 1 MHz and a standby current of 4 µA maximum at +85°C. The memory organization is 32,768 x 8 bits, with a 32-byte page size.

This SRAM is available in an 8-lead PDIP package, suitable for through-hole mounting. It operates within an industrial temperature range of -40°C to +85°C. The device is Pb-Free and Halogen Free, aligning with environmental compliance standards.

The HOLD pin allows communication to be paused without losing data, enabling the host to service higher priority interrupts. This feature makes the 23A256-I/P suitable for applications requiring reliable data handling and interrupt management.