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H8/3021 Datasheet(PDF) 189 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 189 Page - Renesas Technology Corp |
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189 / 712 page  7. I/O Ports Rev.2.00 Mar. 22, 2007 Page 165 of 684 REJ09B0352-0200 Pin Pin Functions and Selection Method P9 2/RxD0 Bit RE in SCR of SCI0, bit SMIF in SCMR, and bit P9 2DDR select the pin function as follows SMIF 0 1 RE 0 1 — P9 2DDR 0 1 — — Pin function P9 2 input P9 2 output RxD 0 input RxD 0 input P9 1/TxD1 Bit TE in SCR of SCI 1 and bit P91DDR select the pin function as follows TE 0 1 P9 1DDR 0 1 — Pin function P9 1 input P9 1 output TxD 1 output P9 0/TxD0 Bit TE in SCR of SCI0, bit SMIF in SCMR, and bit P9 0DDR select the pin function as follows SMIF 0 1 TE 0 1 — P90DDR 0 1 — — Pin function P9 0 input P9 0 output TxD 0 output TxD 0 output* Note: * Functions as the TxD 0 output pin, but there are two states : one in which the pin is driven, and another in which the pin is at high impedance. |
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