23K256 32K Byte (256 Kbit) Serial SPI SRAM 3.3V SMD SOP8

Description

23K256 SMD SOP-8 Serial SRAM Specifications, Benefits, and Usage Guide

Specifications:

1. Memory Type: Serial SRAM (Static RAM)
2. Capacity: 256 Kbit (32 KB)
3. Interface: SPI (Serial Peripheral Interface)
4. Operating Voltage:
   • 1.8V to 3.6V (Low-voltage operation)
5. Operating Current:
   • 1 mA (Typical Read/Write)
   • 1 µA (Standby Mode)
6. Clock Speed:
   • Up to 20 MHz (SPI Mode)
7. Operating Modes:
   • Byte Mode (Single-byte read/write)
   • Sequential Mode (Continuous read/write)
   • Page Mode (Improved performance by reducing command overhead)
8. Endurance:
   • Unlimited Read/Write cycles (Unlike Flash memory, no wear-leveling required)
9. Data Retention:
   • As long as power is supplied (Volatile Memory)
10. Package:
    • SMD SOP-8 (8-pin Small Outline Package)
11. Operating Temperature:
    • -40°C to +85°C (Industrial-grade)

Benefits of 23K256 SRAM:

1. High-Speed Memory:
   • Faster than EEPROM/Flash memory for temporary data storage.
2. Unlimited Read/Write Cycles:
   • Unlike EEPROM, it does not wear out with repeated writes.
3. SPI Interface:
   • Reduces pin count and simplifies circuit design.
4. Low Power Consumption:
   • Ideal for battery-powered devices.
5. Flexible Data Storage:
   • Supports Byte, Page, and Sequential modes for efficient memory access.

Usage Guide:

1. Pinout (SOP-8 Package):

2. How to Connect to a Microcontroller (Example: ESP32, Arduino, STM32)

• SPI Connection Example:
  • CS → Any GPIO pin (e.g., D10 for Arduino)
  • SO (MISO) → MISO of MCU
  • SI (MOSI) → MOSI of MCU
  • SCK → SCK of MCU
  • WP & HOLD → Pull-up to VCC if not used
  • VCC → 3.3V
  • GND → Ground

3. Example Code for Arduino (SPI Communication)

Explanation:

• The code writes 0x55 to address 0x0000 in SRAM.
• Use SPI.transfer(0x03) to read from SRAM.

Applications of 23K256:

1. Data Logging:
   • Temporary storage for sensor data.
2. Buffering for Communication:
   • Store incoming/outgoing data for UART, SPI, or I2C.
3. Display Buffers:
   • Used for LCD, OLED, and LED matrix frame buffering.
4. Audio Processing:
   • Temporary storage in digital sound systems.
5. Gaming and Embedded Systems:
   • Fast access memory for temporary variables.
6. Machine Learning and AI:
   • Temporary RAM for model execution.

Conclusion

The 23K256 SPI SRAM is an excellent choice for applications requiring fast, temporary storage with unlimited read/write cycles. It integrates easily with Arduino, ESP32, STM32, and Raspberry Pi using SPI.