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HD64F2149YV 数据表(PDF) 290 Page - Renesas Technology Corp |
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HD64F2149YV 数据表(HTML) 290 Page - Renesas Technology Corp |
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290 / 1075 page ![]() Section 8 I/O Ports Rev. 3.00 Jan 18, 2006 page 262 of 1044 REJ09B0280-0300 Pin Selection Method and Pin Functions PB3/D3/ WUE3/ CS4 The pin function is switched as shown below according to the combination of the operating mode, bits HI12E and CS4E in SYSCR2, bit ABW in WSCR, and bit PB3DDR. Operating mode Mode 1, modes 2 and 3 (EXPE = 1) Modes 2, 3 (EXPE = 0) HI12E — Either cleared to 0 1 CS4E — 1 ABW 0 1 —— PB3DDR — 010 1 — Pin function D3 I/O pin PB3 input pin PB3 output pin PB3 input pin PB3 output pin CS4 input pin WUE3 input pin Except when used as a data bus pin, this pin can always be used as the WUE3 input pin. The CS4 input pin can only be used in mode 2 or 3 (EXPE = 0). PB2/D2/ WUE2/ CS3 The pin function is switched as shown below according to the combination of the operating mode, bits HI12E and CS3E in SYSCR2, bit ABW in WSCR, and bit PB2DDR. Operating mode Mode 1, modes 2 and 3 (EXPE = 1) Modes 2, 3 (EXPE = 0) HI12E — Either cleared to 0 1 CS3E — 1 ABW 0 1 —— PB2DDR — 010 1 — Pin function D2 I/O pin PB2 input pin PB2 output pin PB2 input pin PB2 output pin CS3 input pin WUE2 input pin Except when used as a data bus pin, this pin can always be used as the WUE2 input pin. The CS3 input pin can only be used in mode 2 or 3 (EXPE = 0). |
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