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MC68HC08AB16AD Datasheet(PDF) 9 Page - Freescale Semiconductor, Inc

Part # MC68HC08AB16AD
Description  Microcontrollers
PDF  380 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC08AB16AD Datasheet(HTML) 9 Page - Freescale Semiconductor, Inc

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MC68HC08AB16A — Rev. 2.1
Technical Data
Freescale Semiconductor
9
8.7.1
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
8.7.2
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
8.8
SIM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.8.1
SIM Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.8.2
SIM Reset Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 120
8.8.3
SIM Break Flag Control Register . . . . . . . . . . . . . . . . . . . . 121
Section 9. Clock Generator Module (CGM)
9.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
9.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
9.3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
9.4
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
9.4.1
Crystal Oscillator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
9.4.2
Phase-Locked Loop (PLL) Circuit . . . . . . . . . . . . . . . . . . . 127
9.4.2.1
PLL Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
9.4.2.2
Acquisition and Tracking Modes . . . . . . . . . . . . . . . . . . 128
9.4.2.3
Manual and Automatic PLL Bandwidth Modes . . . . . . . 128
9.4.2.4
Programming the PLL . . . . . . . . . . . . . . . . . . . . . . . . . . 130
9.4.2.5
Special Programming Exceptions . . . . . . . . . . . . . . . . . 131
9.4.3
Base Clock Selector Circuit . . . . . . . . . . . . . . . . . . . . . . . . 132
9.4.4
CGM External Connections . . . . . . . . . . . . . . . . . . . . . . . . 132
9.5
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
9.5.1
Crystal Amplifier Input Pin (OSC1). . . . . . . . . . . . . . . . . . . 134
9.5.2
Crystal Amplifier Output Pin (OSC2) . . . . . . . . . . . . . . . . . 134
9.5.3
External Filter Capacitor Pin (CGMXFC) . . . . . . . . . . . . . . 134
9.5.4
PLL Analog Power Pin (VDDA) . . . . . . . . . . . . . . . . . . . . . .134
9.5.5
Oscillator Enable Signal (SIMOSCEN). . . . . . . . . . . . . . . . 134
9.5.6
Crystal Output Frequency Signal (CGMXCLK) . . . . . . . . . 135
9.5.7
CGM Base Clock Output (CGMOUT). . . . . . . . . . . . . . . . . 135
9.5.8
CGM CPU Interrupt (CGMINT) . . . . . . . . . . . . . . . . . . . . . 135
9.6
CGM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
9.6.1
PLL Control Register (PCTL) . . . . . . . . . . . . . . . . . . . . . . . 136
9.6.2
PLL Bandwidth Control Register (PBWC) . . . . . . . . . . . . . 138
9.6.3
PLL Programming Register (PPG) . . . . . . . . . . . . . . . . . . . 140



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