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If you are looking for an easy and inexpensive way to add more RAM to your automotive application, our serial SRAM devices are stand-alone volatile memory solutions that can help you create more compact designs while adding features to your current microcontroller (MCU). These 8-pin low-power, high-performance SRAM devices have unlimited endurance and zero write times, making them ideal for applications involving continuous data transfer, buffering, data logging, audio, video and other math- and data-intensive functions. They are available in densities from 64 Kbit up to 1 Mbit and support Serial Peripheral Interface (SPI), Serial Dual I/O Interface (SDI) and Serial Quad I/O™ (SQI™) bus modes. Our automotive-grade serial SRAM devices are AEC-Q100 qualified and ISO/TS16949 compliant to meet the rigorous quality, reliability and long product lifecycle requirements of automotive designers.

Serial SRAM in 2 Minutes

Key Benefits of Serial SRAM:


  • High-speed serial interface architecture
    • 1-, 2- and 4-bit SPI protocol
  • Low-pin-count interface as compared to traditional parallel SRAM interface
  • Low-cost RAM expansion without costly microcontroller upgrade
  • Low power consumption

Serial SRAM Products

View All Parametrics
Product Density (Organization) Voltage Range Max. Clock Freq. Bus Modes Temperature Range Automotive Qualified
23A1024 1024 Kbits 1.7 - 2.2 20 MHz SPI,SDI,SQI -40°C to +125°C Yes
23A256 256 Kbits 1.5 - 1.95 16 MHz SPI -40°C to +85°C Yes
23A512 512K bits 1.7 - 2.2 20 MHz SPI,SDI,SQI -40°C to +125°C Yes
23A640 64 Kbits 1.5 - 1.95 16 MHz SPI -40°C to +85°C Yes
23K256 256 Kbits 2.7 - 3.6 20 MHz SPI -40°C to +125°C Yes
23K640 64 Kbits 2.7 - 3.6 20 MHz SPI -40°C to +125°C Yes
23LC1024 1024 Kbits 2.5 - 5.5 20 MHz SPI,SDI,SQI -40°C to +125°C Yes
23LC512 512 Kbits 2.5 - 5.5 20 MHz SPI,SDI,SQI -40°C to +125°C Yes

Documentation

Application Notes


Title Download
AN1262 - Using C30 External Spaces to Communicate with Off-Chip Serial SRAM Download
AN1287 - Using C18/HI-TECH C Compiler to Interface Serial SRAM Devices to PIC16F/PIC18F Microcontrollers Download
AN1245 - Recommended Usage of Microchip SPI Serial SRAM Devices Download
AN1277 - Using C32 Compiler to Interface Serial SRAM Devices to PIC32 MCUs Download
AN1269 - Using C30 Compiler to Interface Serial SRAM Devices to dsPIC33F and PIC24F Download