23LC512-I/ST

Memory IC Overview

The Microchip Technology 23LC512-I/ST is a 512-Kbit Serial Static Random Access Memory (SRAM) device. It features an SPI-compatible bus interface supporting standard SPI, Serial Dual Interface (SDI), and Serial Quad Interface (SQI) modes with a maximum clock frequency of 20 MHz. The memory organization is 64K x 8 bits. Operating voltage ranges from 2.5V to 5.5V, and the device supports industrial temperature operation from -40°C to +85°C. It utilizes low-power CMOS technology and is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP).

Memory IC Feature Summary

• Supports SPI, SDI, and SQI interfaces for flexible data transfer rates.
• Provides unlimited read and write cycles with zero write time.
• Includes Byte, Page, and Sequential operational modes.
• Features a Hold function to suspend serial communication without resetting sequences.

Memory IC Applications

• Data logging systems requiring non-volatile-like temporary storage.
• Microcontroller-based embedded applications needing fast random access memory.
• Industrial control systems operating within extended temperature ranges.
• Communication devices utilizing high-speed serial data transfer protocols.

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'ST' denotes the 8-TSSOP package. Confirm supply voltage requirements match the 2.5V to 5.5V specification. Ensure host microcontrollers support the desired SPI, SDI, or SQI interface modes for optimal performance.

Memory IC Selection Notes

Select this component when a 512-Kbit capacity is required with low power consumption and high reliability. The 23LC512-I/ST is suitable for applications demanding unlimited endurance compared to Flash memory. Consider the 8-TSSOP package for surface-mount assembly constraints. Verify compatibility with system voltage levels between 2.5V and 5.5V before integration.

Memory IC Part Context

The 23LC512 belongs to the 23A512/23LC512 family of 512-Kbit SPI Serial SRAMs. The 'LC' variant specifically supports a wider voltage range of 2.5V to 5.5V compared to the 'A' variant. This family offers high reliability and is designed for direct interfacing with popular microcontroller families via standard serial protocols.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 23LC512-I/SN (SOIC package) and 23LC512-I/P (PDIP package). These variants share identical electrical characteristics and functionality but differ in physical package dimensions.