参数资料
| 型号： | BR25S640F-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 10/19页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM SPI 64KB 20MHZ 8-SOP |
| 标准包装： | 1 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 20MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-SOP |
| 包装： | 标准包装 |
| 其它名称： | BR25S640F-WE2DKR |
BR25S □□□ Series
Technical Note
● WPB cancel valid area
WPB is normally fixed to “H” or “L” for use, but when WPB is controlled so as to cancel write status register command, pay
attention to the following WPB valid timing.
While write status register command is executed, by setting WPB = “L” in cancel valid area, command can be cancelled.
The area from command ope code to CSB rise at internal automatic write start becomes the cancel valid area. However,
once write is started, by any input write cycle cannot be cancelled. WPB input becomes Don’t Care, and cancellation
becomes invalid.
SCK
6
Ope Code
7
Data
15
16
tE/W
Data write time
Valid
(WRSR command is reset by WPB=L)
Invalid
Fig.39
WPB valid timing (At inputting WRSR command)
● HOLDB pin
By HOLDB pin, command communication can be stopped temporarily (HOLD status). The command communications are
carried out when the HOLDB pin is HIGH. To get in HOLD status, at command communication, when SCK=LOW, set the
HOLDB pin LOW. At HOLD status, SCK and SI become Don’t Care, and SO becomes high impedance (High-Z). To release
the HOLD status, set the HOLDB pin HIGH when SCK=LOW. After that, communication can be restarted from the point
before the HOLD status. For example, when HOLD status is made after A5 address input at read, after release of HOLD
status, by starting A4 address input, read can be restarted. When in HOLD status, keep CSB LOW. When it is set
CSB=HIGH in HOLD status, the IC is reset, therefore communication after that cannot be restarted.
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
10/18
2010.12 - Rev.B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BR25S640-W | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series Serial EEPROMs |
| BR25S-E | 制造商:ROHM 制造商全称:Rohm 功能描述:High speed clock action up to 20MHz(Max.), Wait function by HOLDB terminal. |
| BR25XX0-10XU-1.8 | 制造商:ROHM 制造商全称:Rohm 功能描述:Supply voltage 1.8V~5.5V/Operating temperature -40C~+85C type |
| BR25XX0-10XU-2.7 | 制造商:ROHM 制造商全称:Rohm 功能描述:Supply voltage 2.7V~5.5V/Operating temperature -40C~+85C type |
| BR26 | 制造商:PANJIT 制造商全称:Pan Jit International Inc. 功能描述:MINI SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER |
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