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AT45DB641E bảng dữ liệu(PDF) 26 Page - Renesas Technology Corp

tên linh kiện AT45DB641E
Giải thích chi tiết về linh kiện  64-Mbit DataFlash (with Extra 2-Mbits), 1.7V Minimum SPI Serial Flash Memory
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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AT45DB641E bảng dữ liệu(HTML) 26 Page - Renesas Technology Corp

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AT45DB641E
DS-45DB641E-027N–DFLASH–2/2022
8.2.2
Reading the Security Register
To read the Security Register, an opcode of 77h and three dummy bytes must be clocked into the device. After the last
dummy bit has been clocked in, the contents of the Security Register can be clocked out on the SO pin. After the last
byte of the Security Register has been read, additional pulses on the SCK pin will result in undefined data being output
on the SO pin.
Deasserting the CS pin will terminate the Read Security Register operation and put the SO pin into a high-impedance
state.
Figure 8-5.
Read Security Register
77h
XX
XX
XX
Data
n
Data
n + 1
CS
Data
n + x
SI
SO
Each transition represents eight bits



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