Datasheet

FS98O22
Rev. 1.6 4/146
4.6 Bandgap Voltage and Temperature Sensor .............................................................................. 39
5. CLOCK SYSTEM ............................................................................................................................................................ 40
5.1 Oscillator State ............................................................................................................................ 41
5.2 CPU Instruction Cycle ................................................................................................................ 42
5.3 ADC Sample Frequency ............................................................................................................. 43
5.4 Beeper Clock ............................................................................................................................... 44
5.5 Voltage Doubler Operation Frequency ...................................................................................... 45
5.6 Chopper Operation Amplifier Input Control Signal .................................................................. 46
5.7 TMCLK -- Timer and LCD Module Input Clock .......................................................................... 47
6. TIMER MODULE, WATCH DOG TIMER AND PROGRAMMABLE COUNTER ............................................................ 48
6.1 Timer Module ............................................................................................................................... 53
6.1.1 Timer module interrupt ................................................................................................... 54
6.1.2 Using Timer with External/Internal Clock ...................................................................... 55
6.2 Watch Dog Timer ......................................................................................................................... 57
6.3 Dual 16-bit Programmable Counter ........................................................................................... 58
7. I/O PORT ........................................................................................................................................................................ 62
7.1 Digital I/O Port with Analog Input Channel Shared: PT1[7:0] .................................................. 75
7.2 Digital I/O Port and External Interrupt Input : PT2[0], PT2[1], PT3[0], PT3[1] ......................... 77
7.3 Digital I/O Port or PDM Output : PT2[2] and PT2[5] .................................................................. 79
7.4 Digital I/O Port or I2C Serial Port : PT2[3]/SDA, PT2[4]/SCL .................................................... 80
7.5 Digital I/O Port : PT2[6] ............................................................................................................... 82
7.6 Digital I/O Port or Buzzer Output : PT2[7] ................................................................................. 84
8. PDM (PULSE DENSITY MODULATOR) MODULE ....................................................................................................... 86
9. I2C MODULE (SLAVE MODE ONLY) ............................................................................................................................ 93
10. ANALOG FUNCTION NETWORK ............................................................................................................................... 100
10.1 Analog to Digital Converter (ADC) : ........................................................................................ 109
10.2 OPAMP : OP1 ............................................................................................................................. 113
11. ADC APPLICATION GUIDE ......................................................................................................................................... 115
11.1 ADC Output Format .................................................................................................................. 115
11.2 ADC Linear Range ..................................................................................................................... 115
11.3 ADC Output Rate and Settling Time ........................................................................................ 115
11.4 ADC Input Offset ....................................................................................................................... 115
11.5 ADC Digital Output .................................................................................................................... 116
11.6 ADC Resolution ......................................................................................................................... 116
12. LOW NOISE OPERATION AMPLIFIER GUIDE ........................................................................................................... 117
12.1 Single End Amplifier Application ............................................................................................. 117
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