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参数资料
| 型号： | SST25WF020-40-5I-QAE-T |
| 厂商： | Microchip Technology |
| 文件页数： | 16/36页 |
| 文件大小： | 0K |
| 描述： | IC FLASH SER 2MB 40MHZ SPI 8WSON |
| 标准包装： | 2,000 |
| 系列： | SST25 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 1M (128K x 8) |
| 速度： | 40MHz |
| 接口： | SPI 串行 |
| 电源电压： | 1.65 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-WSON |
| 包装： | 带卷 (TR) |
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512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit 1.8V SPI Serial Flash
A Microchip Technology Company
SST25WF512 / SST25WF010 / SST25WF020 / SST25WF040
Data Sheet
There is no wrap mode during AAI programming; once the highest unprotected memory address is
reached, the device will exit AAI operation and reset the Write-Enable-Latch bit (WEL = 0) and the AAI
bit (AAI = 0).
End-of-Write Detection
There are three methods to determine completion of a program cycle during AAI Word programming:
hardware detection by reading the Serial Output, software detection by polling the BUSY bit in the Soft-
ware Status Register or wait T BP .
Hardware End-of-Write Detection
The Hardware End-of-Write detection method eliminates the overhead of polling the Busy bit in the
Software Status Register during an AAI Word program operation. The 8-bit command, 70H, configures
the Serial Output (SO) pin to indicate Flash Busy status during AAI Word programming, as shown in
Figure 9. The 8-bit command, 70H, must be executed prior to executing an AAI Word-Program instruc-
tion. Once an internal programming operation begins, asserting CE# will immediately drive the status
of the internal flash status on the SO pin. A ‘0’ indicates the device is busy and a ‘1’ indicates the
device is ready for the next instruction. De-asserting CE# will return the SO pin to tri-state.
The 8-bit command, 80H, disables the Serial Output (SO) pin to output busy status during AAI-Word-
program operation, and re-configures SO as an output pin. In this state, the SO pin will function as a
normal Serial Output pin. At this time, the RDSR command can poll the status of the Software Status
Register. This is shown in Figure 10.
CE#
MODE 3
0 1 2 3 4 5 6 7
SCK
SI
SO
MODE 0
70
MSB
HIGH IMPEDANCE
1328 F09.0
Figure 9: Enable SO as Hardware RY/BY# during AAI Programming
CE#
MODE 3
0 1 2 3 4 5 6 7
SCK
SI
SO
MODE 0
80
MSB
HIGH IMPEDANCE
1328 F10.0
Figure 10: Disable SO as Hardware RY/BY# during AAI Programming
?2011 Silicon Storage Technology, Inc.
16
DS25016A
06/11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SST25WF020-40-5I-QAF | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:512 Kbit / 1 Mbit / 2 Mbit / 4Mbit 1.8V SPI Serial Flash |
| SST25WF020-40-5I-SAE | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:512 Kbit / 1 Mbit / 2 Mbit / 4Mbit 1.8V SPI Serial Flash |
| SST25WF020-40-5I-SAF | 功能描述:闪存 2M (256Kx8) 40MHz Industrial Temp RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST25WF020-40-5I-SAF-T | 功能描述:闪存 1.65 to 1.95V 2Mbit SPI Serial 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST25WF020A | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2 Mbit 1.8V SPI Serial Flash |
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