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SST26VF032BEUI データシート(PDF) 33 Page - Microchip Technology |
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SST26VF032BEUI データシート(HTML) 33 Page - Microchip Technology |
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33 / 76 page ![]() 2019 Microchip Technology Inc. DS20006152A-page 33 SST26VF032BEUI 5.32 Write-Disable (WRDI) The Write-Disable (WRDI) instruction sets the Write- Enable-Latch bit in the Status register to ‘0,’ preventing Write operations. The WRDI instruction is ignored during any internal write operations. Any Write opera- tion started before executing WRDI will complete. Drive CE# high before executing WRDI. To execute a Write-Disable, the host drives CE# low, sends the Write Disable command cycle (04H), then drives CE# high. See Figures 5-34 and 5-35. FIGURE 5-34: WRITE-DISABLE (WRDI) SEQUENCE (SQI) FIGURE 5-35: WRITE-DISABLE (WRDI) SEQUENCE (SPI) 20005218 F33.1 MODE 3 0 1 SCK SIO(3:0) CE# 04 MODE 0 CE# SO SI SCK 01 2 3 4 5 6 7 04 HIGH IMPEDANCE MODE 0 MODE 3 20005218 F19.0 MSB |
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