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23A640
  • 23A640
  • 23A640
  • 23A640

23A640

In Production

The Microchip Technology Inc. 23X640 are 64 Kbit Serial SRAM devices. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 23X640 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP....

Microchip Technology 23A640 Product Info

16 April 2026 0

Parameters

Battery Backup

No

Bus Modes

SPI

Density

64 Kbit

Max. Clock Freq.

16 MHz

Operating Voltage Max (V)

1.95

Operating Voltage Min (V)

1.5

Page Size (Bytes)

32

Write Protected

No

Data Retention

0

Features

    • Max. Clock 16 MHz
    • Low-Power CMOS Technology: - Read Current: 3 mA at 1 MHz - Standby Current: 4 µA Max. at 3.6V
    • 8192 x 8-bit Organization
    • 32-Byte Page
    • HOLD pin
    • Flexible Operating modes: - Byte read and write - Page mode (32 Byte Page) - Sequential mode
    • Sequential Read/Write

Description

The Microchip Technology Inc. 23X640 are 64 Kbit Serial SRAM devices. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 23X640 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.

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