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23K256T-I/ST 其他数据使用手册 - Microchip(微芯)
制造商:
Microchip(微芯)
分类:
RAM芯片
封装:
TSSOP-8
描述:
256K SPI总线的低功耗串行SRAM 256K SPI Bus Low-Power Serial SRAM
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P12Hot
标记信息在P13
封装信息在P13P21
功能描述在P5
导航目录
23K256T-I/ST数据手册
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© 2009 Microchip Technology Inc. Preliminary DS22100C-page 1
23A256/23K256
Device Selection Table
Features:
• 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
• High Reliability
• Temperature Ranges Supported:
• Pb-Free and RoHS Compliant, Halogen Free
Pin Function Table
Description:
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.
Package Types (not to scale)
Part Number VCC Range Page Size Temp. Ranges Packages
23K256 2.7-3.6V 32 Byte I P, SN, ST
23A256 1.7-1.95V 32 Byte I P, SN, ST
- Industrial (I): -40°Cto +85°C
Name Function
CS
Chip Select Input
SO Serial Data Output
V
SS Ground
SI Serial Data Input
SCK Serial Clock Input
HOLD
Hold Input
VCC Supply Voltage
CS
SO
NC
V
SS
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
PDIP/SOIC/TSSOP
(P, SN, ST)
256K SPI Bus Low-Power Serial SRAM
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