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M29W640FT Scheda tecnica(PDF) 69 Page - STMicroelectronics |
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M29W640FT Scheda tecnica(HTML) 69 Page - STMicroelectronics |
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69 / 72 page ![]() M29W640FT, M29W640FB 9 Part Numbering 69/72 Figure 18. In-System Equipment Group Protect Flowchart 2. Block Protection Groups are shown in Appendix A, Tables 20 and 21. 3. RP can be either at VIH or at VID when using the In-System Technique to protect the Extended Block. AI11563 WRITE 60h ADDRESS = GROUP ADDRESS A0, A2, A3, A6 = VIL, A1 = VIH n = 0 Wait 100 µs WRITE 40h ADDRESS = GROUP ADDRESS A0, A2, A3, A6 = VIL, A1 = VIH RP = VIH ++n = 25 START FAIL PASS YES NO DATA = 01h YES NO RP = VIH Wait 4 µs READ DATA ADDRESS = GROUP ADDRESS A0, A2, A3, A6 = VIL, A1 = VIH RP = VID ISSUE READ/RESET COMMAND ISSUE READ/RESET COMMAND WRITE 60h ADDRESS = GROUP ADDRESS A0, A2, A3, A6 = VIL, A1 = VIH |
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