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8.
Clock Generator ..................................................................................... 90
8.1
Introduction ................................................................................................................................. 90
8.2
Registers..................................................................................................................................... 92
8.2.1
System Clock Control Register 0 (CM0) ............................................................................ 93
8.2.2
System Clock Control Register 1 (CM1) ............................................................................ 95
8.2.3
Oscillation Stop Detection Register (CM2) ........................................................................ 97
8.2.4
Peripheral Clock Select Register (PCLKR) ....................................................................... 99
8.2.5
PLL Control Register 0 (PLC0) ........................................................................................ 100
8.2.6
Processor Mode Register 2 (PM2) .................................................................................. 101
8.2.7
40 MHz On-Chip Oscillator Control Register 0 (FRA0) ................................................... 102
8.2.8
40 MHz On-Chip Oscillator Control Register 2 (FRA2) ................................................... 103
8.3
Clocks Generated by Clock Generators ................................................................................... 104
8.3.1
Main Clock ....................................................................................................................... 104
8.3.2
PLL Clock ........................................................................................................................ 105
8.3.3
fOCO40M ........................................................................................................................ 106
8.3.4
fOCO-F ............................................................................................................................ 106
8.3.5
125 kHz On-Chip Oscillator Clock (fOCO-S) ................................................................... 106
8.3.6
Sub Clock (fC) ................................................................................................................. 107
8.4
CPU Clock and Peripheral Function Clocks ............................................................................. 108
8.4.1
CPU Clock and BCLK ...................................................................................................... 108
8.4.2
Peripheral Function Clocks (f1, fOCO40M, fOCO-F, fOCO-S, fC32, fC, Main Clock) ..... 108
8.5
Clock Output Function ...............................................................................................................110
8.6
System Clock Protection Function.............................................................................................110
8.7
Oscillator Stop/Restart Detect Function.....................................................................................111
8.7.1
Operation When CM27 Bit is 0 (Oscillator Stop Detect Reset) ......................................... 111
8.7.2
Operation When CM27 Bit is 1 (Oscillator Stop/Restart Detect Interrupt) ........................112
8.7.3
Using the Oscillator Stop/Restart Detect Function ...........................................................113
8.8
Interrupt .....................................................................................................................................113
8.9
Notes on Clock Generator .........................................................................................................114
8.9.1
Oscillator Using a Crystal or a Ceramic Resonator ..........................................................114
8.9.2
Noise Countermeasure .....................................................................................................115
8.9.3
CPU Clock ........................................................................................................................116
8.9.4
Oscillator Stop/Restart Detect Function ............................................................................116
8.9.5
PLL Frequency Synthesizer .............................................................................................117
9.
Power Control....................................................................................... 118
9.1
Introduction ................................................................................................................................118
9.2
Registers....................................................................................................................................118
9.2.1
Flash Memory Control Register 0 (FMR0) ........................................................................119
9.2.2
Flash Memory Control Register 2 (FMR2) ....................................................................... 120
9.3
Clock......................................................................................................................................... 122
A- 3
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