HCS08 datasheet(14/374 Pages) NXP

14 / 374 page

MC9S08JM60 Series Data Sheet, Rev. 5

Freescale Semiconductor

11.6 Interrupts .......................................................................................................................................173

11.6.1 Byte Transfer Interrupt ....................................................................................................173

11.6.2 Address Detect Interrupt .................................................................................................174

11.6.3 Arbitration Lost Interrupt ................................................................................................174

11.7 Initialization/Application Information ..........................................................................................175

Chapter 12

Multi-Purpose Clock Generator (S08MCGV1)

12.1 Introduction ...................................................................................................................................179

12.1.1 Features ...........................................................................................................................181

12.1.2 Modes of Operation ........................................................................................................183

12.2 External Signal Description ..........................................................................................................183

12.3 Register Definition ........................................................................................................................184

12.3.1 MCG Control Register 1 (MCGC1) ...............................................................................184

12.3.2 MCG Control Register 2 (MCGC2) ...............................................................................185

12.3.3 MCG Trim Register (MCGTRM) ...................................................................................186

12.3.4 MCG Status and Control Register (MCGSC) .................................................................187

12.3.5 MCG Control Register 3 (MCGC3) ...............................................................................188

12.4 Functional Description ..................................................................................................................190

12.4.1 Operational Modes ..........................................................................................................190

12.4.2 Mode Switching ..............................................................................................................194

12.4.3 Bus Frequency Divider ...................................................................................................194

12.4.4 Low Power Bit Usage .....................................................................................................195

12.4.5 Internal Reference Clock ................................................................................................195

12.4.6 External Reference Clock ...............................................................................................195

12.4.7 Fixed Frequency Clock ...................................................................................................195

12.5 Initialization / Application Information ........................................................................................196

12.5.1 MCG Module Initialization Sequence ............................................................................196

12.5.2 MCG Mode Switching ....................................................................................................197

12.5.3 Calibrating the Internal Reference Clock (IRC) .............................................................208

Chapter 13

Real-Time Counter (S08RTCV1)

13.1 Introduction ...................................................................................................................................211

13.1.1 Features ...........................................................................................................................213

13.1.2 Modes of Operation ........................................................................................................213

13.1.3 Block Diagram ................................................................................................................214

13.2 External Signal Description ..........................................................................................................214

13.3 Register Definition ........................................................................................................................214

13.3.1 RTC Status and Control Register (RTCSC) ....................................................................215

13.3.2 RTC Counter Register (RTCCNT) ..................................................................................216

13.3.3 RTC Modulo Register (RTCMOD) ................................................................................216

13.4 Functional Description ..................................................................................................................216

13.4.1 RTC Operation Example .................................................................................................217

13.5 Initialization/Application Information ..........................................................................................218

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