23K256-I/P

Memory IC Overview

The Microchip Technology 23K256-I/P is a 256 Kbit Serial SRAM device organized as 32,768 x 8 bits. It operates within a supply voltage range of 2.7V to 3.6V and supports a maximum clock frequency of 20 MHz. The component utilizes a Serial Peripheral Interface (SPI) compatible bus for data access, featuring separate serial data input (SI) and output (SO) lines synchronized by a serial clock (SCK). It includes a dedicated HOLD pin to pause communication without resetting the sequence. The Industrial temperature grade (-40°C to +85°C) ensures reliable operation in demanding environments.

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 transmission to service higher priority interrupts
• Utilizes low-power CMOS technology with minimal standby current consumption
• Provides high reliability with robust ESD protection on all pins

Memory IC Applications

• Data logging systems requiring non-volatile-like temporary storage
• Microcontroller-based embedded applications needing fast random access memory
• Industrial control systems interfacing via standard SPI ports
• Automotive electronics utilizing robust industrial-grade components

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature range (-40°C to +85°C) and 'P' denotes the 8-lead PDIP package. Confirm the '23K256' designation indicates the 2.7V-3.6V supply voltage variant, distinct from the 1.5V-1.95V '23A256'. Ensure compliance with RoHS and Halogen-free requirements if specified for your assembly process.

Memory IC Selection Notes

Select this component when an SPI-compatible SRAM with 256 Kbit capacity is required for applications operating between 2.7V and 3.6V. Choose the Industrial grade for environments ranging from -40°C to +85°C. Consider the PDIP package only if through-hole mounting is necessary; otherwise, SOIC or TSSOP options are available for surface mount designs.

Memory IC Part Context

This part belongs to the 23X256 family of Serial SRAM devices from Microchip Technology. It shares functional similarities with the 23A256 but differs in supply voltage requirements. The family is designed to interface directly with popular microcontroller families, including PIC®, offering a simple serial interface alternative to parallel memory solutions.

Memory IC Replacement Considerations

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