MC9S08GB60A Datasheet, PDF (10/302 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Section Number
Title
Page
7.2.3 External Clock Connections ..........................................................................................108
7.2.4 External Crystal/Resonator Connections .......................................................................108
7.3 Functional Description ..................................................................................................................109
7.3.1 Off Mode (Off) ..............................................................................................................109
7.3.1.1 BDM Active .................................................................................................109
7.3.1.2 OSCSTEN Bit Set .........................................................................................109
7.3.1.3 Stop/Off Mode Recovery ..............................................................................109
7.3.2 Self-Clocked Mode (SCM) ............................................................................................109
7.3.3 FLL Engaged, Internal Clock (FEI) Mode ....................................................................111
7.3.3.1 FLL Engaged Internal Unlocked ..................................................................111
7.3.3.2 FLL Engaged Internal Locked ......................................................................111
7.3.4 FLL Bypassed, External Clock (FBE) Mode ................................................................111
7.3.5 FLL Engaged, External Clock (FEE) Mode ..................................................................111
7.3.5.1 FLL Engaged External Unlocked .................................................................112
7.3.5.2 FLL Engaged External Locked .....................................................................112
7.3.6 FLL Lock and Loss-of-Lock Detection .........................................................................112
7.3.7 FLL Loss-of-Clock Detection ........................................................................................113
7.3.8 Clock Mode Requirements ............................................................................................114
7.3.9 Fixed Frequency Clock ..................................................................................................115
7.3.10 High Gain Oscillator ......................................................................................................115
7.4 Initialization/Application Information ..........................................................................................115
7.4.1 Introduction ....................................................................................................................115
7.4.2 Example #1: External Crystal = 32 kHz, Bus Frequency = 4.19 MHz .........................118
7.4.3 Example #2: External Crystal = 4 MHz, Bus Frequency = 20 MHz .............................119
7.4.4 Example #3: No External Crystal Connection, 5.4 MHz Bus Frequency .....................121
7.4.5 Example #4: Internal Clock Generator Trim .................................................................122
7.5 ICG Registers and Control Bits .....................................................................................................123
7.5.1 ICG Control Register 1 (ICGC1) ...................................................................................124
7.5.2 ICG Control Register 2 (ICGC2) ...................................................................................125
7.5.3 ICG Status Register 1 (ICGS1) ........................................................................ 126
7.5.4 ICG Status Register 2 (ICGS2) ......................................................................................127
7.5.5 ICG Filter Registers (ICGFLTU, ICGFLTL) .................................................................127
7.5.6 ICG Trim Register (ICGTRM) ......................................................................................128
Chapter 8
Central Processor Unit (S08CPUV2)
8.1 Introduction ...................................................................................................................................129
8.1.1 Features ..........................................................................................................................129
8.2 Programmer’s Model and CPU Registers .....................................................................................130
8.2.1 Accumulator (A) ............................................................................................................130
8.2.2 Index Register (H:X) .....................................................................................................130
8.2.3 Stack Pointer (SP) ..........................................................................................................131
8.2.4 Program Counter (PC) ...................................................................................................131
8.2.5 Condition Code Register (CCR) ....................................................................................131
MC9S08GB60A Data Sheet, Rev. 2
10
Freescale Semiconductor