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AT45DB161E Datasheet(PDF) 33 Page - Dialog Semiconductor

Part # AT45DB161E
Description  16-Mbit DataFlash (with Extra 512-kbits) 2.3 V or 2.5 V Minimum SPI Serial Flash Memory
PDF  80 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

AT45DB161E Datasheet(HTML) 33 Page - Dialog Semiconductor

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AT45DB161E
DS-AT45DB161E–8782N–03-2021
9.2.2
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 results in undefined data
being output on the SO pin.
Deasserting the CS pin terminates the Read Security Register operation and put the SO pin into a high-impedance
state.
Figure 9-5. 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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