MC9S08AC16_08 Datasheet, PDF (12/344 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

Section Number
Title
Page
Chapter 7
Central Processor Unit (S08CPUV2)
7.1 Introduction ...................................................................................................................................111
7.1.1 Features ...........................................................................................................................111
7.2 Programmer’s Model and CPU Registers .....................................................................................112
7.2.1 Accumulator (A) .............................................................................................................112
7.2.2 Index Register (H:X) .......................................................................................................112
7.2.3 Stack Pointer (SP) ...........................................................................................................113
7.2.4 Program Counter (PC) ....................................................................................................113
7.2.5 Condition Code Register (CCR) .....................................................................................113
7.3 Addressing Modes .........................................................................................................................115
7.3.1 Inherent Addressing Mode (INH) ...................................................................................115
7.3.2 Relative Addressing Mode (REL) ...................................................................................115
7.3.3 Immediate Addressing Mode (IMM) ..............................................................................115
7.3.4 Direct Addressing Mode (DIR) ......................................................................................115
7.3.5 Extended Addressing Mode (EXT) ................................................................................116
7.3.6 Indexed Addressing Mode ..............................................................................................116
7.4 Special Operations .........................................................................................................................117
7.4.1 Reset Sequence ...............................................................................................................117
7.4.2 Interrupt Sequence ..........................................................................................................117
7.4.3 Wait Mode Operation ......................................................................................................118
7.4.4 Stop Mode Operation ......................................................................................................118
7.4.5 BGND Instruction ...........................................................................................................119
7.5 HCS08 Instruction Set Summary ..................................................................................................120
Chapter 8
Internal Clock Generator (S08ICGV4)
8.1 Introduction ...................................................................................................................................133
8.1.1 Features ...........................................................................................................................133
8.1.2 Modes of Operation ........................................................................................................134
8.1.3 Block Diagram ................................................................................................................135
8.2 External Signal Description ..........................................................................................................135
8.2.1 EXTAL — External Reference Clock / Oscillator Input ................................................135
8.2.2 XTAL — Oscillator Output ............................................................................................135
8.2.3 External Clock Connections ...........................................................................................136
8.2.4 External Crystal/Resonator Connections ........................................................................136
8.3 Register Definition ........................................................................................................................137
8.3.1 ICG Control Register 1 (ICGC1) ....................................................................................137
8.3.2 ICG Control Register 2 (ICGC2) ....................................................................................139
8.3.3 ICG Status Register 1 (ICGS1) .......................................................................................140
8.3.4 ICG Status Register 2 (ICGS2) .......................................................................................141
8.3.5 ICG Filter Registers (ICGFLTU, ICGFLTL) ..................................................................141
MC9S08AC16 Series Data Sheet, Rev. 6
12
Freescale Semiconductor