M95040-DRMF3TP datasheet(16/41 Pages) STMICROELECTRONICS

Part #	M95040-DRMF3TP

Description	Automotive 4-Kbit serial SPI bus EEPROMs

PDF	41 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Instructions

M95040-A125 M95040-A145

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DocID024225 Rev 6

Figure 6. Write Disable (WRDI) sequence

4.3

Read Status Register (RDSR)

The Read Status Register (RDSR) instruction is used to read the content of the Status

As shown in Figure 7, to send this instruction to the device, Chip Select (S) is first driven

low. The bits of the instruction byte are shifted in (MSB first) on Serial Data Input (D), the

Status Register content is then shifted out (MSB first) on Serial Data Output (Q).

If Chip Select (S) continues to be driven low, the Status Register content is continuously

shifted out.

The Status Register can always be read, even if a Write cycle (tW) is in progress. The Status

Figure 7. Read Status Register (RDSR) sequence

M95040-DRMF3TP Datasheet(PDF) 16 Page - STMicroelectronics