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M29W640DB 数据表(PDF) 45 Page - STMicroelectronics |
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M29W640DB 数据表(HTML) 45 Page - STMicroelectronics |
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45 / 49 page  45/49 M29W640DT, M29W640DB Figure 17. Programmer Equipment Chip Unprotect Flowchart Note: Block Protection Groups are shown in APPENDIX D., Table 19. and Table 20.. PROTECT ALL GROUPS AI05575 A6, A12, A15 = VIH(1) E, G, A9 = VID DATA W = VIH E, G = VIH ADDRESS = CURRENT GROUP ADDRESS A0 = VIL, A1, A6 = VIH Wait 10ms = 00h INCREMENT CURRENT GROUP n = 0 CURRENT GROUP = 0 Wait 4µs W = VIL ++n = 1000 START YES YES NO NO LAST GROUP YES NO E = VIL Wait 4µs G = VIL Wait 60ns Read DATA FAIL PASS A9 = VIH E, G = VIH A9 = VIH E, G = VIH |
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