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AK93C45AF Datasheet(PDF) 7 Page - Asahi Kasei Microsystems |
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AK93C45AF Datasheet(HTML) 7 Page - Asahi Kasei Microsystems |
7 / 14 page ASAHI KASEI [AK93C45A/55A/65A/75A] DAM01E-02 2002/06 - 7 - EWEN / EWDS When VCC is applied to the part, the part automatically powers up in the ERASE/WRITE Disable state. In the ERASE/WRITE disable state, execution of WRITE instruction is disable. Before WRITE instruction is executed, EWEN instruction must be executed. The ERASE/WRITE enable state continues until EWDS instruction is executed or VCC is removed from the part. Execution of a read instruction is independent of both EWEN and EWDS instructions. EWEN / EWDS (AK93C45A) EWEN / EWDS (AK93C55A/65A) EWEN / EWDS (AK93C75A) AK93C55A/65A output a logic "1" (Ready status), if previous instruction is WRITE. Start bit Hi-Z X: Don't care EWDS=00 0 CS SK DI DO 12345 10 11 0 0 1 0 67 XX XX EWEN=11 XX 89 AK93C75A output a logic "1" (Ready status), if previous instruction is WRITE. Start bit Hi-Z X: Don't care EWDS=00 0 CS SK DI DO 12345 12 13 0 0 1 0 67 XX XX EWEN=11 XX 89 XX 10 11 AK93C45A output a logic "1" (Ready status), if previous instruction is WRITE. Start bit Hi-Z X: Don't care EWDS=00 0 CS SK DI DO 1234 5 8 9 0 0 1 0 67 XX XX EWEN=11 |
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