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AM186 数据表(PDF) 36 Page - Advanced Micro Devices |
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AM186 数据表(HTML) 36 Page - Advanced Micro Devices |
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36 / 112 page  36 Am186TMER and Am188TMER Microcontrollers Data Sheet DRAF T Table 3. Numeric PIO Pin Assignments Notes: 1. These pins are used by emulators. (Emulators also use S2–S0, RES, NMI, CLKOUTA, BHE, ALE, AD15–AD0, and A16–A0.) 2. These pins revert to normal operation if BHE/ADEN (Am186ER microcontroller) or RFSH2/ADEN (Am188ER microcontroller) is held Low during power-on reset. 3. When used as a PIO, input with pullup option available. 4. When used as a PIO, input with pulldown option available. Table 4. Alphabetic PIO Pin Assignments Notes: 1. These pins are used by emulators. (Emulators also use S2–S0, RES, NMI, CLKOUTA, BHE, ALE, AD15–AD0, and A16–A0.) 2. These pins revert to normal operation if BHE/ADEN (Am186ER microcontroller) or RFSH2/ADEN (Am188ER microcontroller) is held Low during power-on reset. 3. When used as a PIO, input with pullup option available. 4. When used as a PIO, input with pulldown option available. PIO No. Associated Pin Power-On Reset Status 0 TMRIN1 Input with pullup 1 TMROUT1 Input with pulldown 2 PCS6/A2 Input with pullup 3 PCS5/A1 Input with pullup 4 DT/R Normal operation(3) 5 DEN Normal operation(3) 6 SRDY Normal operation(4) 7(1) A17 Normal operation(3) 8(1) A18 Normal operation(3) 9(1) A19 Normal operation(3) 10 TMROUT0 Input with pulldown 11 TMRIN0 Input with pullup 12 DRQ0 Input with pullup 13 DRQ1 Input with pullup 14 MCS0 Input with pullup 15 MCS1 Input with pullup 16 PCS0 Input with pullup 17 PCS1 Input with pullup 18 PCS2 Input with pullup 19 PCS3 Input with pullup 20 SCLK Input with pullup 21 SDATA Input with pullup 22 SDEN0 Input with pulldown 23 SDEN1 Input with pulldown 24 MCS2 Input with pullup 25 MCS3/RFSH Input with pullup 26(1,2) UZI/CLKSEL2 Input with pullup 27 TXD Input with pullup 28 RXD Input with pullup 29(1,2) S6/CLKSEL1 Input with pullup 30 INT4 Input with pullup 31 INT2 Input with pullup Associated Pin PIO No. Power-On Reset Status A17(1) 7 Normal operation(3) A18(1) 8 Normal operation(3) A19(1) 9 Normal operation(3) DEN 5 Normal operation(3) DRQ0 12 Input with pullup DRQ1 13 Input with pullup DT/R 4 Normal operation(3) INT2 31 Input with pullup INT4 30 Input with pullup MCS0 14 Input with pullup MCS1 15 Input with pullup MCS2 24 Input with pullup MCS3/RFSH 25 Input with pullup PCS0 16 Input with pullup PCS1 17 Input with pullup PCS2 18 Input with pullup PCS3 19 Input with pullup PCS5/A1 3 Input with pullup PCS6/A2 2 Input with pullup RXD 28 Input with pullup S6/CLKSEL1(1,2) 29 Input with pullup SCLK 20 Input with pullup SDATA 21 Input with pullup SDEN0 22 Input with pulldown SDEN1 23 Input with pulldown SRDY 6 Normal operation(4) TMRIN0 11 Input with pullup TMRIN1 0 Input with pullup TMROUT0 10 Input with pulldown TMROUT1 1 Input with pulldown TXD 27 Input with pullup UZI/CLKSEL2(1,2) 26 Input with pullup |
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