23LC512-E/SN

Memory IC Overview

The Microchip Technology 23LC512-E/SN is a 512-Kbit Serial Static Random Access Memory (SRAM) device. It features an SPI-compatible bus interface supporting SDI and SQI modes with a maximum clock frequency of 16 MHz for the Extended temperature grade. The memory organization is 64K x 8 bits, utilizing an 8-Lead SOIC package. Operating voltage ranges from 2.5V to 5.5V, with an extended industrial temperature range spanning -40°C to +125°C.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI interface modes for flexible data transfer speeds
• Provides unlimited read and write cycles without write time delays
• Includes a Hold function to suspend serial communication sequences temporarily
• Operates within an extended temperature range suitable for harsh environments

Memory IC Applications

• Data logging in industrial control systems
• Non-volatile data storage backup for microcontrollers
• Embedded system configuration storage
• Real-time data buffering in sensor interfaces

Memory IC Procurement Notes

Verify the 'E' suffix indicates the Extended temperature grade (-40°C to +125°C) and the 'SN' suffix denotes the 8-lead SOIC package. Confirm the specific datasheet revision matches the required electrical characteristics, particularly the 16 MHz clock limit for this temperature variant. Ensure RoHS compliance documentation is available for regulatory requirements.

Memory IC Selection Notes

Select this component when high endurance and fast random access are required compared to EEPROM alternatives. The Extended temperature grade makes it suitable for automotive or outdoor applications where standard Industrial grades may fail. Consider the SOIC package dimensions against PCB space constraints and verify host controller compatibility with SPI/SDI/SQI protocols.

Memory IC Part Context

This device belongs to the 23LC512 family of Serial SRAMs manufactured by Microchip Technology. It shares architectural similarities with the 23A512 but differs in operating voltage and temperature specifications. The family supports various packages including PDIP and TSSOP, offering design flexibility for different form factors while maintaining consistent pinouts and instruction sets across variants.

Memory IC Replacement Considerations

Direct substitutes include other 512Kb SPI SRAMs from Microchip such as the 23LC512-I/SN for lower temperature requirements. Cross-brand replacements require verification of voltage levels, pin compatibility, and timing parameters. Ensure any alternative supports the required Extended temperature range if environmental conditions exceed standard industrial limits.

Memory IC FAQ

What is the maximum clock frequency for the 23LC512-E variant?

The maximum clock frequency for the Extended temperature grade (E) is 16 MHz.

Does the HOLD function work in SQI mode?

No, the HOLD functionality is not available when operating in Serial Quad Interface (SQI) mode due to shared pin usage.

How is the device powered down?

The device enters low-power Standby mode when the Chip Select (CS) pin is driven high.