IBM EM78P259N/260N 6.8 Infrared Remote Control Application/PWM Waveform Generation...................51

Contents
iv • Product Specification (V1.2) 05.18.2007
6.2.13 IOC61 (TCCB Counter)..... ..............................................................................23
6.2.14 IOC71 (TCCBH/MSB Counter)........................................................................ 24
6.2.15 IOC81 (TCCC Counter)......................................................................... ..........24
6.2.16 IOC91 (Low Time Register)............................................................................. 25
6.2.17 IOCA1 (High Time Register)............................................................................25
6.2.18 IOCB1 High/Low Time Scale Control Register)............................................... 25
6.2.19 IOCC1 (TCC Prescaler Counter)..................................................................... 26
6.3 TCC/WDT and Prescaler..................................................................................27
6.4 I/O Ports........................................................................................................... 28
6.4.1 Usage of Port 5 Input Change Wake-up/Interrupt Function.............................31
6.5 Reset and Wake-up..........................................................................................31
6.5.1 Reset and Wake-up Operation........................................................................ 31
6.5.1.1 Wake-Up and Interrupt Modes Operation Summary......................... 34
6.5.1.2 Register Initial Values after Reset.....................................................36
6.5.1.3 Controller Reset Block Diagram........................................................40
6.5.2 The T and P Status under STATUS (R3) Register........................................... 41
6.6 Interrupt............................................................................................................ 41
6.7 Analog-To-Digital Converter (ADC).................................................................. 44
6.7.1 ADC Control Register (AISR/R8, ADCON/R9, ADOC/RA)...............................44
6.7.1.1 R8 (AISR: ADC Input Select Register)..............................................44
6.7.1.2 R9 (ADCON: AD Control Register)................................................... 45
6.7.1.3 RA (ADOC: AD Offset Calibration Register)......................................46
6.7.2 ADC Data Register (ADDATA/RB, ADDATA1H/RC, ADDATA1L/RD)..............47
6.7.3 ADC Sampling Time........................................................................................47
6.7.4 AD Conversion Time....................................................................................... 47
6.7.5 ADC Operation during Sleep Mode....................................................... ..........47
6.7.6 Programming Process/Considerations............................................................48
6.7.6.1 Programming Process ......................................................................48
6.7.6.2 Sample Demo Programs ..................................................................49
6.8 Infrared Remote Control Application/PWM Waveform Generation...................51
6.8.1 Overview.................................................. .......................................................51
6.8.2 Function Description........................................................................................52
6.8.3 Programming the Related Registers................................................................54
6.9 Timer/Counter...................................................................................................55
6.9.1 Overview.................................................. .......................................................55
6.9.2 Function Description........................................................................................55
6.9.3 Programming the Related Registers................................................................57
6.10 Comparator .....................................................................................................57
6.10.1 External Reference Signal........................................................ .......................58
6.10.2 Comparator Output..........................................................................................58
6.10.3 Using a Comparator as an Operation Amplifier................................. ..............59
6.10.4 Comparator Interrupt.......................................................................................59
6.10.5 Wake-up from Sleep Mode......... .....................................................................59