MICROCHIP 23K256-I/P 256K SPI Serial SRAM IC, 8-Pin DIP

The MICROCHIP 23K256-I/P is a 256K low-power Serial SRAM device designed for reliable and efficient data storage in embedded systems. It is accessed via a simple Serial Peripheral Interface (SPI) compatible bus, requiring only a clock input (SCK), separate data in (SI) and data out (SO) lines, and a chip select (CS) input for control.

A key feature is the hold pin, which allows communication with the device to be paused. During this hold state, input transitions are ignored (except for chip select), enabling the host processor to service higher-priority interrupts without disrupting the memory operation. This makes it an ideal component for complex, multi-tasking electronic applications.

Key Features & Performance

• High-Speed Operation: Supports a maximum clock frequency of 20MHz for rapid data transfer.
• Low Power Consumption: Built with advanced CMOS technology, it is optimised for energy-efficient performance.
• Organisation: Features a 32,768 x 8-bit memory structure.
• Operational Flexibility: Offers flexible operating modes and supports sequential read/write operations for streamlined data handling.
• High Reliability: Engineered for dependable operation in demanding environments.

Technical Specifications

The SRAM is a synchronous type with a memory density of 32Kbit (256K). It is supplied in an 8-pin DIP (Dual In-line Package) for through-hole mounting. The device operates from a nominal 3.3V supply, with a range from 2.7V to 3.6V, and is rated for an extended industrial temperature range of -40°C to +85°C.

Important Handling Information

This device is Electrostatic Discharge (ESD) sensitive. Proper ESD precautions must be observed during handling and installation to prevent damage.