23A640T-I/ST Part Information

Details for 23A640T-I/ST by Microchip Technology

23A640

Part 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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Part Features

  • Max. Clock 16 MHz
  • Low-Power CMOS Technology: - Read Current: 3 mA at 1 MHz - Standby Current: 4 u00b5A 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

Part Specifications

Bus Modes SPI
Density (Organization) 64K bits
Max. Clock Freq. 16 MHz
Max. Stand By Current (µA) 4
Memory Organization 1
Operating Voltage Min. (V) 1.5
Oper Voltage Max (V) 1.95
Page Size (bytes) 32
ProgMemoryKB 8.00
ESD 2000V
Memory Org x8
Memory Size 64K
Memory Size Num 64000
Read Current 10
Comments Pin 3 is NC
Temperature Range -40C to +85C

Alternative Part Descriptions

  • SRAM Chip Sync Single 1.8V 64K-Bit 8K x 8 32ns 8-Pin TSSOP T/R | Avnet America
  • 64K, 8K X 8 1.7V SERIAL SRAM, IND | Allied Electronics & Automation
  • SRAM Chip Sync Single 1.8V 64K-Bit 8K x 8 32ns 8-Pin TSSOP T/R | Avnet Europe

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