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HD64F2149YV 数据表(PDF) 281 Page - Renesas Technology Corp |
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HD64F2149YV 数据表(HTML) 281 Page - Renesas Technology Corp |
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281 / 1075 page ![]() Section 8 I/O Ports Rev. 3.00 Jan 18, 2006 page 253 of 1044 REJ09B0280-0300 Pin Selection Method and Pin Functions PA6/A22/PS2CC/ KIN14/CIN14 The pin function is switched as shown below according to the combination of operating mode, the KBIOE bit in KBCR2H of the keyboard buffer controller, the IOSE bit in SYSCR, and bit PA6DDR. Operating mode Modes 1, 2 (EXPE = 0), 3 Mode 2 (EXPE = 1) KBIOE 0 1 0 1 PA6DDR 0 1 — 01 — IOSE —— —— 01 — Pin function PA6 input pin PA6 output pin PS2CC output pin PA6 input pin A22 output pin PA6 output pin PS2CC output pin KIN14 input pin, CIN14 input pin, PS2CC input pin When the IICS bit in STCR is set to 1, this pin functions as a bus buffer. This pin can always be used as the PS2CC, KIN14, or CIN14 input pin. PA5/A21/PS2BD/ KIN13/CIN13 The pin function is switched as shown below according to the combination of operating mode, the KBIOE bit in KBCR1H of the keyboard buffer controller, the IOSE bit in SYSCR, and bit PA5DDR. Operating mode Modes 1, 2 (EXPE = 0), 3 Mode 2 (EXPE = 1) KBIOE 0 1 0 1 PA5DDR 0 1 — 01 — IOSE —— —— 01 — Pin function PA5 input pin PA5 output pin PS2BD output pin PA5 input pin A21 output pin PA5 output pin PS2BD output pin KIN13 input pin, CIN13 input pin, PS2BD input pin When the IICS bit in STCR is set to 1, this pin functions as a bus buffer. This pin can always be used as the PS2BD, KIN13, or CIN13 input pin. |
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