MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 9
MC68HC908AP16CFA
Manufacturer Part Number
MC68HC908AP16CFA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AP16CFA.pdf
(440 pages)
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MC68HC908AP Family — Rev. 2.5
MOTOROLA
7.1
7.2
7.2.1
7.2.2
7.3
7.4
7.5
7.6
7.6.1
7.6.2
7.6.3
7.6.4
7.6.5
7.6.6
7.7
7.7.1
7.7.2
7.8
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.3.6
8.3.7
8.3.8
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Clock Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Internal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
RC Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
X-tal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Low Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Oscillator During Break Mode. . . . . . . . . . . . . . . . . . . . . . . . . . 99
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Section 8. Clock Generator Module (CGM)
CGM Reference Clock Selection . . . . . . . . . . . . . . . . . . . . . 93
TBM Reference Clock Selection . . . . . . . . . . . . . . . . . . . . . 94
Crystal Amplifier Input Pin (OSC1). . . . . . . . . . . . . . . . . . . . 97
Crystal Amplifier Output Pin (OSC2) . . . . . . . . . . . . . . . . . . 98
Oscillator Enable Signal (SIMOSCEN). . . . . . . . . . . . . . . . . 98
CGM Oscillator Clock (CGMXCLK) . . . . . . . . . . . . . . . . . . . 98
CGM Reference Clock (CGMRCLK) . . . . . . . . . . . . . . . . . . 98
Oscillator Clock to Time Base Module (OSCCLK) . . . . . . . . 98
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Oscillator Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Phase-Locked Loop Circuit (PLL) . . . . . . . . . . . . . . . . . . . 105
PLL Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Acquisition and Tracking Modes . . . . . . . . . . . . . . . . . . . . 107
Manual and Automatic PLL Bandwidth Modes. . . . . . . . . . 107
Programming the PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Special Programming Exceptions . . . . . . . . . . . . . . . . . . . 113
Base Clock Selector Circuit . . . . . . . . . . . . . . . . . . . . . . . . 113
Go to: www.freescale.com
Section 7. Oscillator (OSC)
Table of Contents
Data Sheet
9
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