MICROCHIP 23K256-I/SN 256Kbit SPI SRAM, SOIC-8, 2.7-3.6V

The MICROCHIP 23K256-I/SN is a 256Kbit low-power Serial SRAM device, designed for efficient and reliable data storage in a wide range of electronic applications. Accessed via a simple Serial Peripheral Interface (SPI) compatible bus, it requires only a clock input (SCK) along with separate data in (SI) and data out (SO) lines, making for a straightforward and space-saving connection.

Device access is controlled by a chip select (CS) input, and communication can be temporarily paused using the hold pin. This feature allows the host microcontroller to service higher-priority interrupts without losing its place in the memory access sequence, as transitions on other inputs are ignored while the hold function is active.

Built with advanced low-power CMOS technology, this SRAM offers high reliability and flexible operating modes, including sequential read and write operations for streamlined data handling. Its compact SOIC-8 surface-mount package is ideal for modern, space-constrained PCB designs.

Key Features & Specifications

• Memory Density: 256Kbit organised as 32,768 x 8-bit.
• Interface: Simple 4-wire SPI serial bus.
• High-Speed Operation: Supports clock frequencies up to 20MHz.
• Power Supply: Wide operating voltage range from 2.7V to 3.6V (3.3V nominal).
• Package: 8-pin SOIC (Small Outline Integrated Circuit).
• Operating Temperature: Robust performance from -40°C to +85°C.
• Mounting: Surface-mount technology (SMT).
• Hold Function: Allows bus communication to be paused for interrupt servicing.

Supplied in a protective tube for secure handling and storage, this component is a dependable choice for adding fast, volatile memory to your design.