mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 10

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mc68hc908as60

Manufacturer Part Number
mc68hc908as60
Description
Mc68hc908as60 Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Table of Contents
Technical Data
9.8
9.8.1
9.8.2
9.8.3
10.1
10.2
10.3
10.4
10.4.1
10.4.2
10.4.2.1
10.4.2.2
10.4.2.3
10.4.2.4
10.4.2.5
10.4.3
10.4.4
10.5
10.5.1
10.5.2
10.5.3
10.5.4
10.5.5
10.5.6
10.5.7
10.5.8
10.6
10.6.1
10.6.2
10.6.3
10.7
Freescale Semiconductor, Inc.
For More Information On This Product,
SIM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
CGM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Section 10. Clock Generator Module (CGM)
SIM Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 151
SIM Reset Status Register . . . . . . . . . . . . . . . . . . . . . . . 153
SIM Break Flag Control Register . . . . . . . . . . . . . . . . . . . . 154
Crystal Oscillator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Phase-Locked Loop Circuit (PLL) . . . . . . . . . . . . . . . . . . . 159
Base Clock Selector Circuit . . . . . . . . . . . . . . . . . . . . . . . . 165
CGM External Connections . . . . . . . . . . . . . . . . . . . . . . . . 166
Crystal Amplifier Input Pin (OSC1) . . . . . . . . . . . . . . . . . . .167
Crystal Amplifier Output Pin (OSC2) . . . . . . . . . . . . . . . . . 167
External Filter Capacitor Pin (CGMXFC) . . . . . . . . . . . . . . 167
Analog Power Pin (V
Oscillator Enable Signal (SIMOSCEN). . . . . . . . . . . . . . . . 168
Crystal Output Frequency Signal (CGMXCLK) . . . . . . . . .168
CGM Base Clock Output (CGMOUT). . . . . . . . . . . . . . . . . 168
CGM CPU Interrupt (CGMINT) . . . . . . . . . . . . . . . . . . . . . 168
PLL Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
PLL Bandwidth Control Register . . . . . . . . . . . . . . . . . . . . 171
PLL Programming Register . . . . . . . . . . . . . . . . . . . . . . . . 173
Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Acquisition and Tracking Modes . . . . . . . . . . . . . . . . . .161
Programming the PLL . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Special Programming Exceptions . . . . . . . . . . . . . . . . . 165
Manual and Automatic PLL Bandwidth Modes . . . . . . . 161
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Table of Contents
DDA
) . . . . . . . . . . . . . . . . . . . . . . . . . . 168
MC68HC908AS60 — Rev. 1.0

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