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M95080-DRDW3TP Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce M95080-DRDW3TP
Description  Automotive 8-Kbit serial SPI bus EEPROMs
PDF  42 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95080-DRDW3TP Fiches technique(HTML) 17 Page - STMicroelectronics

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M95080-A125 M95080-A145
Instructions
41
4.3
Read Status Register (RDSR)
The Read Status Register (RDSR) instruction is used to read the content of the Status
Register.
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
Register functionality is detailed in Section 3.4.2: Status Register and data protection.
Figure 7. Read Status Register (RDSR) sequence



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