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MC81F4216B Datasheet(PDF) 75 Page - Finechips |
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MC81F4216B Datasheet(HTML) 75 Page - Finechips |
75 / 200 page MC81F4x16 October 19, 2009 Ver.1.35 75 R0CONM – R03~05 R0 PORT CONTROL MIDDLE REGISTER 00C7H A reset clears the R0CONM register to „00H‟, makes R04-R03 pins input mode. You can use R0CONM register setting to select input or output mode (open-drain or push-pull) and enable alternative functions. When programming the port, please remember that any alternative peripheral I/O function that defined by the R0CONM register must also be enabled in the associated peripheral module. 7 6 5 4 3 2 1 0 R0CONM R05 R04 R03 Reset value: 00H R/W R/W R/W R/W R/W R/W R/W R/W R05 R05/AN3/EXT3/SI/T1O/PWM1O 00: Schmitt trigger input mode (SI/EXT3) 01: Output mode, open-drain 10: Alternative function (AN3) 11: Alternative function (T1O/PWM1O) R04 R04/AN2/EXT2/SCK/EC1 000: Schmitt trigger input mode ( *SCK in / EC1 / EXT2) 001: Output mode, open-drain 010: Alternative function (AN2) 011: Alternative function (SCK out) 1xx: Output mode, push-pull R03 R03/AN1/EXT1/T0O/PWM0O 000: Schmitt trigger input mode(EXT1) 001: Output mode, open-drain 010: Alternative function (AN1) 011: Alternative function (T0O/PWM0O) 1xx: Output mode, push-pull Note: If you want to use SIO module in slave mode, you must set SCK port as an input mode. |
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