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ELANSC310 Datasheet(PDF) 25 Page - Advanced Micro Devices |
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ELANSC310 Datasheet(HTML) 25 Page - Advanced Micro Devices |
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25 / 119 page  Élan™SC310 Microcontroller Data Sheet 25 PREL IMINARY Notes: 1. These outputs function as open-drain outputs in Normal Parallel Port mode, and function as CMOS drivers when the EPP- MODE configuration bit is set. 2. The parallel port interface BUSY input must have an external pullup if the parallel port is to be used in EPP mode. If this pullup is not present, accesses to the parallel port in EPP mode will lock up the system. All inputs that have VCC clamp = 5 V are 5-V safe inputs regardless of their VCCIO. Notes: 1. These pins are terminated externally per bus option selection. All inputs that have VCC clamp = 5 V are 5-V safe inputs regardless of their VCCIO. Table 5. Parallel Port Interface Signal Name Pin No. I/O Type Term Drive Type Clock Off Reset State (volts) VCCIO VCC Clamp Spec. Load (pF) Local Bus Max ISA AFDT [X14OUT]1 80 O —D Last state 5.0 5.0 VCC5 VCC5 100 INIT1 89 O — D Last state 0.0 0.0 VCC5 VCC5 100 STRB1 83 O — D Last state 5.0 5.0 VCC5 VCC5 100 SLCTIN1 84 O — D Last state 5.0 5.0 VCC5 VCC5 100 ACK 88 I — — — 5.0 5.0 VCC5 VCC5 — BUSY2 85 I — — — 5.0 5.0 VCC5 VCC5 — ERROR 86 I — — — 5.0 5.0 VCC5 VCC5 — PE 82 I — — — 5.0 5.0 VCC5 VCC5 — SLCT 87 I — — — 5.0 5.0 VCC5 VCC5 — PPDWE [PPDCS] 90 O — B 1(1) 5.0 5.0 VCC5 VCC5 30 PPOEN 91 O — B 1(1) 0.0 0.0 VCC5 VCC5 30 Table 6. Serial Port Interface Signal Name Pin No. I/O Type Term Drive Type Clock Off Reset State (volts) VCCIO VCC Clamp Spec. Load (pF) Local Bus Max ISA DTR/CFG11 92 O — A Last state 5.0 0 VCC5 VCC5 50 RTS/CFG01 93 O — A Last state 0.0 5.0 VCC5 VCC5 50 SOUT 94 O — A Last state 0.0 5.0 VCC5 VCC5 50 CTS 96 I PU — — 5.0 5.0 VCC5 VCC5 — DCD 98 I PU — — 5.0 5.0 VCC5 VCC5 — DSR 97 I PU — — 5.0 5.0 VCC5 VCC5 — RIN 100 I PU — — 5.0 5.0 VCC5 VCC5 — SIN 99 I PU — — 5.0 5.0 VCC5 VCC5 — |
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