23K256T-E/SN

Memory IC Overview

The Microchip Technology 23K256T-E/SN is a 256 Kbit Serial SRAM device organized as 32,768 x 8 bits. It operates within a supply voltage range of 2.7 V to 3.6 V and supports a maximum clock frequency of 20 MHz. The component utilizes an SPI-compatible serial bus for data access and is housed in an 8-lead TSSOP package. Designed for automotive applications, it functions reliably across an extended temperature range from -40°C to +125°C.

Memory IC Feature Summary

• Supports flexible operating modes including byte, page, and sequential read/write operations via SPI interface
• Features a HOLD pin that allows suspension of serial communication without resetting the internal address pointer
• Provides low-power CMOS technology with minimal standby current consumption
• Includes a STATUS register for configuring device operating modes and enabling or disabling specific features

Memory IC Applications

• Automotive embedded systems requiring non-volatile-like temporary storage
• Microcontroller-based designs needing fast serial data buffering
• Industrial control units utilizing SPI communication protocols

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when ordering. Confirm the 'E' designation aligns with the required automotive temperature grade (-40°C to +125°C). Ensure the 'SN' suffix corresponds to the SOIC/TSSOP package type specified in your schematic. Cross-reference the datasheet revision to confirm electrical characteristics match your design constraints.

Memory IC Selection Notes

Select this component when an SPI interface is preferred over parallel memory architectures for space-constrained designs. The 23K256 series offers faster access times compared to EEPROMs but requires continuous power for data retention. Choose the E-grade variant specifically for environments exceeding standard industrial temperature limits. Consider the TSSOP package dimensions against available PCB real estate.

Memory IC Part Context

This part belongs to the 23X256 family of low-power serial SRAM devices manufactured by Microchip Technology. The family includes variants like the 23A256, which supports lower voltage ranges. These devices are designed to interface directly with popular microcontroller families, including PIC® microcontrollers, providing efficient data storage solutions for embedded applications.

Memory IC Replacement Considerations

The 23K256-I/SN serves as a direct functional substitute for industrial temperature range applications. Verify that any replacement maintains the same 2.7V to 3.6V supply voltage requirement and SPI compatibility. Ensure the alternative component supports the necessary 20 MHz clock speed and holds the required 32-byte page size for seamless integration.