参数资料
| 型号： | 23A256T-I/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC SRAM 256KBIT 20MHZ 8TSSOP |
| 产品培训模块： | 23x640 and 23x256 SRAM Overview |
| 标准包装： | 2,500 |
| 格式 - 存储器： | RAM |
| 存储器类型： | SRAM |
| 存储容量： | 256K (32K x 8) |
| 速度： | 20MHz |
| 接口： | SPI 串行 |
| 电源电压： | 1.7 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
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23A256/23K256
256K SPI Bus Low-Power Serial SRAM
Device Selection Table
Part Number
23K256
23A256
V CC Range
2.7-3.6V
1.5-1.95V
Page Size
32 Byte
32 Byte
Temp. Ranges
I, E
I
Packages
P, SN, ST
P, SN, ST
Features:
? Max. Clock 20 MHz
? Low-Power CMOS Technology:
- Read Current: 3 mA at 1 MHz
- Standby Current: 4 ? A Max. at +85°C
? 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:
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.
- Industrial (I):
- Automotive (E):
-40 ? C to +85 ? C
-40 ? C to +125 ? C
Package Types (not to scale)
? Pb-Free and RoHS Compliant, Halogen Free
Pin Function Table
Name
Function
CS
SO
Chip Select Input
Serial Data Output
PDIP/SOIC/TSSOP
(P, SN, ST)
V SS
SI
SCK
HOLD
V CC
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
CS
SO
NC
V SS
1
2
3
4
8
7
6
5
V CC
HOLD
SCK
SI
? 2008-2011 Microchip Technology Inc.
DS22100F-page 1
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