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23A256,23K256 Data Sheet

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发表于 2010-4-24 12:42:56 | 显示全部楼层 |阅读模式
  23A256/23K256 256K SPI Bus Low-Power Serial SRAM Data Sheet


The Microchip Technology Inc. 23X256 are 256 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 23X256 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.
参数名称  数值
Density  256K bits
Max. Clock Freq.  16 MHz
Page Size (bytes)  32
Op. Volt Range (V)  1.5 to 1.95
Temp Range (°C)  -40°C to +85°C  

     特性
Max. Clock 20 MHz
Low-Power CMOS Technology:
- Read Current: 3 mA at 1 MHz
- Standby Current: 4 μA Max. at 3.6V
32,768 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


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