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C8051F300 Datasheet(PDF) 77 Page - List of Unclassifed Manufacturers |
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C8051F300 Datasheet(HTML) 77 Page - List of Unclassifed Manufacturers |
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77 / 174 page  C8051F300/1/2/3/4/5 Rev. 2.6 77 SFR Definition 8.11. IT01CF: INT0/INT1 Configuration Bit7: IN1PL: /INT1 Polarity 0: /INT1 input is active low. 1: /INT1 input is active high. Bits6–4: IN1SL2–0: /INT1 Port Pin Selection Bits These bits select which Port pin is assigned to /INT1. Note that this pin assignment is inde- pendent of the Crossbar; /INT1 will monitor the assigned Port pin without disturbing the peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by setting to ‘1’ the corresponding bit in register XBR0). Bit3: IN0PL: /INT0 Polarity 0: /INT0 interrupt is active low. 1: /INT0 interrupt is active high. Bits2–0: INT0SL2–0: /INT0 Port Pin Selection Bits These bits select which Port pin is assigned to /INT0. Note that this pin assignment is inde- pendent of the Crossbar. /INT0 will monitor the assigned Port pin without disturbing the peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by setting to ‘1’ the corresponding bit in register XBR0). R/W R/W R/W R/W R/W R/W R/W R/W Reset Value IN1PL IN1SL2 IN1SL1 IN1SL0 IN0PL IN0SL2 IN0SL1 IN0SL0 00000001 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address: 0xE4 Note: Refer to SFR Definition 15.1 for INT0/1 edge- or level-sensitive interrupt selection. IN1SL2–0 /INT1 Port Pin 000 P0.0 001 P0.1 010 P0.2 011 P0.3 100 P0.4 101 P0.5 110 P0.6 111 P0.7 IN0SL2–0 /INT0 Port Pin 000 P0.0 001 P0.1 010 P0.2 011 P0.3 100 P0.4 101 P0.5 110 P0.6 111 P0.7 |
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