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SST25PF080B-80-4C-SAE-T Datasheet(PDF) 10 Page - Microchip Technology |
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SST25PF080B-80-4C-SAE-T Datasheet(HTML) 10 Page - Microchip Technology |
10 / 32 page SST25PF080B DS25134A-page 10 2012 Microchip Technology Inc. bit command, 70H, must be executed prior to initiating an AAI Word-Program instruction. Once an internal programming operation begins, asserting CE# will immediately drive the status of the internal flash status on the SO pin. A ‘0’ indicates the device is busy and a ‘1’ indicates the device is ready for the next instruction. De-asserting CE# will return the SO pin to tri-state. While in AAI and Hardware End-of-Write detection mode, the only valid instructions are AAI Word (ADH) and WRDI (04H). To exit AAI Hardware End-of-Write detection, first exe- cute WRDI instruction, 04H, to reset the Write-Enable- Latch bit (WEL=0) and AAI bit. Then execute the 8-bit DBSY command, 80H, to disable RY/BY# status during the AAI command. See Figures 4-7 and 4-8. FIGURE 4-6: ENABLE SO AS HARDWARE RY/BY# DURING AAI PROGRAMMING FIGURE 4-7: DISABLE SO AS HARDWARE RY/BY# DURING AAI PROGRAMMING CE# SO SI SCK 01 2 3 4 5 6 7 70 HIGH IMPEDANCE MODE 0 MODE 3 25137 EnableSO.0 MSB CE# SO SI SCK 01 2 3 4 5 6 7 80 HIGH IMPEDANCE MODE 0 MODE 3 25137 DisableSO.0 MSB |
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