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23LC1024-I/ST

MCHP23LC1024-I/ST

Microchip Technology
SRAM 1024K 2.5V SPI SERIAL SRAM SQI
6,686 in stock
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Overview

The 23LC1024-I/ST is a 1 Mbit serial SRAM device organized as 128K x 8 bits, designed for high-speed data buffering and temporary storage. It supports standard SPI, Dual SPI (SDI), and Quad SPI (SQI) interfaces with clock frequencies up to 20 MHz across a wide voltage range of 2.5V to 5.5V. This CMOS technology part offers unlimited read and write cycles with zero write time, making it an ideal bridge between slow non-volatile memory and high-performance processing.

Why Choose This Part

This SRAM provides unlimited endurance, eliminating the wear-leveling concerns associated with Flash or EEPROM. Its support for SQI mode allows for increased throughput using a four-wire data bus, while the 10uA maximum standby current makes it suitable for power-constrained applications. The wide 2.5V to 5.5V operating range ensures compatibility with both legacy 5V systems and modern low-voltage logic.

Applications

Audio Data Buffering
Provides temporary storage for digital audio streams to prevent playback jitter in processing pipelines.
Network Packet Scratchpad
Used as a high-speed buffer for incoming data packets in industrial communication interfaces.
Display Frame Buffering
Acts as external RAM for small microcontrollers to store pixel data for low-resolution graphical displays.
Data Logging Cache
Captures high-frequency sensor data before it is batch-written to slower, endurance-limited NVM like Flash or EEPROM.

Key Specifications

Technology SRAM
Memory Size 1Mbit
Memory Type Volatile
Memory Format SRAM
Mounting Type Surface Mount
Package / Case 8-TSSOP (0.173", 4.40mm Width)
Clock Frequency 20 MHz
Memory Interface SPI - Quad I/O
Voltage - Supply 2.5V ~ 5.5V
Memory Organization 128K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-TSSOP

Getting Started

Interface the device with a microcontroller via a standard SPI peripheral, ensuring the CS line is pulled high during power-up. Configure the mode register for Byte, Page (32-byte), or Sequential operation depending on your burst requirements. For maximum performance, utilize the SQI mode to transfer 4 bits per clock cycle at the 20 MHz limit.

23LC1024-I/ Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Technology Package Stock
23LC1024-I/ST (this part) SRAM TSSOP-8 6,686
23LC1024-I/SN SRAM SOIC-8 4,944
23LC1024-I/SNVAO SRAM - Synchronous.. SOIC-8 —

Also Consider

23LCV1024-I/SN MCHPMicrochip Technology - Offers similar 1 Mbit capacity but includes a battery backup pin for non-volatile operation with an external cell.
APS6404L-3SQR-SN AP Memory - Provides a significantly higher 64 Mbit capacity using a pseudo-SRAM (PSRAM) architecture for memory-intensive applications.