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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD77015GC датащи(PDF) 13 Page - NEC |
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UPD77015GC датащи(HTML) 13 Page - NEC |
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13 / 60 page  13 µPD77015, 77017, 77018 Symbol Pin No. I/O Function HA1 82 I Specifies register which HD7 to HD0 access 1: Accesses HST: Host interface status register when HA1 = 0 0: Accesses HDT(in): Host transmit data register when HWR = 0 0: Accesses HDT(out): Host receive data register when HRD = 0 HA0 81 I Specifies bits of registers which HD7 to HD0 access • 1: Accesses bits 15-8 of HST, HDT(in) or HDT(out) • 0: Accesses bits 7-0 of HST, HDT(in) or HDT(out) HCS 78 I Chip select input HRD 79 I Host read input HWR 80 I Host write input HRE 66 O Host read enable output HWE 67 O Host write enable output HD7 - HD0 70 - 77 I/O (3S) 8 bits host data bus • Host interface Remark The state of the pins added 3S becomes high impedance when the host does not access host interface. • I/O port Symbol Pin No. I/O Function P3 - P0 62 - 65 I/O I/O port |
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