M95160-DRDW3TG datasheet(18/42 Pages) STMICROELECTRONICS

Numer części	M95160-DRDW3TG

Szczegółowy opis	Automotive 16-Kbit serial SPI bus EEPROMs

PDF	42 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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Instructions

M95160-A125 M95160-A145

18/42

DocID023726 Rev 6

4.4

Write Status Register (WRSR)

The Write Status Register (WRSR) instruction allows new values to be written to the Status

have been executed.

The Write Status Register (WRSR) instruction is entered (MSB first) by driving Chip Select

(S) low, sending the instruction code followed by the data byte on Serial Data input (D), and

driving the Chip Select (S) signal high.

The contents of the SRWD and BP1, BP0 bits are updated after the completion of the

WRSR instruction, including the Write cycle (tW).

The Write Status Register (WRSR) instruction has no effect on the b6, b5, b4, b1 and b0 bits

in the Status Register (see Table 2: Status Register format).

The Status Register functionality is detailed in Section 3.4.2: Status Register and data

protection.

The instruction is not accepted, and is not executed, if a Write cycle is currently in progress.

Figure 8. Write Status Register (WRSR) sequence

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