HCS08 datasheet(12/198 Pages) NXP

12 / 198 page

MC9S08QD4 Series MCU Data Sheet, Rev. 6

Freescale Semiconductor

8.3.2 Status and Control Register 2 (ADCSC2) ......................................................................101

8.3.3 Data Result High Register (ADCRH) .............................................................................102

8.3.4 Data Result Low Register (ADCRL) ..............................................................................102

8.3.5 Compare Value High Register (ADCCVH) ....................................................................103

8.3.6 Compare Value Low Register (ADCCVL) .....................................................................103

8.3.7 Configuration Register (ADCCFG) ................................................................................103

8.3.8 Pin Control 1 Register (APCTL1) ..................................................................................105

8.3.9 Pin Control 2 Register (APCTL2) ..................................................................................106

8.3.10 Pin Control 3 Register (APCTL3) ..................................................................................107

8.4

Functional Description ..................................................................................................................108

8.4.1 Clock Select and Divide Control ....................................................................................108

8.4.2 Input Select and Pin Control ...........................................................................................109

8.4.3 Hardware Trigger ............................................................................................................109

8.4.4 Conversion Control .........................................................................................................109

8.4.5 Automatic Compare Function .........................................................................................112

8.4.6 MCU Wait Mode Operation ............................................................................................112

8.4.7 MCU Stop3 Mode Operation ..........................................................................................112

8.4.8 MCU Stop1 and Stop2 Mode Operation .........................................................................113

8.5

Initialization Information ..............................................................................................................113

8.5.1 ADC Module Initialization Example .............................................................................113

8.6

Application Information ................................................................................................................115

8.6.1 External Pins and Routing ..............................................................................................115

8.6.2 Sources of Error ..............................................................................................................117

Chapter 9

Internal Clock Source (S08ICSV1)

9.1

Introduction ...................................................................................................................................121

9.1.1 ICS Configuration Information .......................................................................................121

9.1.2 Features ...........................................................................................................................123

9.1.3 Modes of Operation ........................................................................................................123

9.1.4 Block Diagram ................................................................................................................124

9.2

External Signal Description ..........................................................................................................125

9.3

Register Definition ........................................................................................................................125

9.3.1 ICS Control Register 1 (ICSC1) .....................................................................................125

9.3.2 ICS Control Register 2 (ICSC2) .....................................................................................126

9.3.3 ICS Trim Register (ICSTRM) .........................................................................................127

9.3.4 ICS Status and Control (ICSSC) .....................................................................................127

9.4

Functional Description ..................................................................................................................128

9.4.1 Operational Modes ..........................................................................................................128

9.4.2 Mode Switching ..............................................................................................................130

9.4.3 Bus Frequency Divider ...................................................................................................130

9.4.4 Low Power Bit Usage .....................................................................................................131

9.4.5 Internal Reference Clock ................................................................................................131

9.4.6 Optional External Reference Clock ................................................................................131

9.4.7 Fixed Frequency Clock ...................................................................................................132

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