23K256-E/P

Memory IC Overview

The Microchip Technology 23K256-E/P is a 256 Kbit Serial SRAM device organized as 32,768 x 8 bits. It interfaces via a standard SPI-compatible serial bus requiring SCK, SI, SO, and CS signals. The Automotive (E) grade variant supports a supply voltage range of 2.7V to 3.6V and operates within an ambient temperature range of -40°C to +125°C. It utilizes low-power CMOS technology with a maximum clock frequency of 20 MHz. The component is housed in an 8-lead PDIP package.

Memory IC Feature Summary

• Supports flexible operating modes including Byte, Page, and Sequential access for efficient data management.
• Features a HOLD pin that allows suspension of serial communication without resetting the sequence or losing state.
• Provides high reliability suitable for demanding automotive environments.

Memory IC Applications

• Data logging systems requiring non-volatile-like temporary storage in automotive contexts
• Microcontroller peripheral expansion for applications lacking sufficient internal memory
• Industrial control systems utilizing SPI-based architectures

Memory IC Procurement Notes

Verify the specific suffix 'E' corresponds to the Automotive grade (-40°C to +125°C) rather than Industrial grade when sourcing. Confirm the 'P' suffix indicates the 8-lead PDIP through-hole package. Ensure the design accommodates the 2.7V to 3.6V supply voltage requirement. Check datasheet revisions for any updates to electrical characteristics or packaging details before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when an SPI interface is required for external RAM expansion in automotive applications. The 23K256-E/P is distinct from the 23A256 series due to its higher voltage tolerance and extended temperature range. Consider the 32-byte page size limitations for write operations. Evaluate power consumption requirements against the specified standby and read current values at target clock frequencies.

Memory IC Part Context

This part belongs to the 23X256 family of 256-Kbit Serial SRAM devices manufactured by Microchip Technology. The family includes variants such as the 23A256 for lower voltage industrial applications and different package options like SOIC and TSSOP. The 23K256 specifically targets automotive-grade requirements, offering enhanced thermal performance compared to standard industrial counterparts while maintaining compatibility with common microcontroller SPI ports.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.