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ATmega169PV-8MCH 数据表(PDF) 73 Page - ATMEL Corporation |
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ATmega169PV-8MCH 数据表(HTML) 73 Page - ATMEL Corporation |
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73 / 393 page  73 8018N–AVR–08/09 ATmega169P 13.3.1 Alternate Functions of Port A The Port A has an alternate function as COM0:3 and SEG0:3 for the LCD Controller. Table 13-4 and Table 13-5 relates the alternate functions of Port A to the overriding signals shown in Figure 13-5 on page 71. Table 13-3. Port A Pins Alternate Functions Port Pin Alternate Function PA7 SEG3 (LCD Front Plane 3) PA6 SEG2 (LCD Front Plane 2) PA5 SEG1 (LCD Front Plane 1) PA4 SEG0 (LCD Front Plane 0) PA3 COM3 (LCD Back Plane 3) PA2 COM2 (LCD Back Plane 2) PA1 COM1 (LCD Back Plane 1) PA0 COM0 (LCD Back Plane 0) Table 13-4. Overriding Signals for Alternate Functions in PA7..PA4 Signal Name PA7/SEG3 PA6/SEG2 PA5/SEG1 PA4/SEG0 PUOE LCDEN LCDEN LCDEN LCDEN PUOV 00 00 DDOE LCDEN LCDEN LCDEN LCDEN DDOV 0 0 0 0 PVOE 00 00 PVOV 00 00 PTOE –– –– DIEOE LCDEN LCDEN LCDEN LCDEN DIEOV 0 0 0 0 DI –– –– AIO SEG3 SEG2 SEG1 SEG0 |
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