MC68HC908JK3 MOTOROLA [Motorola, Inc], MC68HC908JK3 Datasheet - Page 95

• Manufacturer Part Number: MC68HC908JK3
• Description: MC68HC908JK1
• Manufacturer: MOTOROLA [Motorola, Inc]

8.1 Contents
8.2 Introduction
MC68H(R)C908JL3
MOTOROLA
Technical Data — MC68H(R)C908JL3
—
Rev. 1.0
8.2
8.3
8.4
8.5
8.5.1
8.5.2
8.5.3
8.5.4
8.5.5
8.5.6
8.5.7
8.6
8.6.1
8.6.2
8.7
The oscillator module provides the reference clock for the MCU system
and bus. Two types of oscillator modules are available:
•
•
MC68HC908xxx— built-in oscillator module (X-tal oscillator) that
requires an external crystal or ceramic-resonator. This option also
allows an external clock that can be driven directly into OSC1.
MC68HRC908xxx — built-in oscillator module (RC oscillator) that
requires an external RC connection only.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
X-tal Oscillator (MC68HC908xxx). . . . . . . . . . . . . . . . . . . . . . . 96
RC Oscillator (MC68HRC908xxx) . . . . . . . . . . . . . . . . . . . . . . 97
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Low Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Oscillator During Break Mode. . . . . . . . . . . . . . . . . . . . . . . . . 100
Crystal Amplifier Input Pin (OSC1). . . . . . . . . . . . . . . . . . . . 98
Crystal Amplifier Output Pin (OSC2/PTA6/RCCLK). . . . . . . 98
Oscillator Enable Signal (SIMOSCEN). . . . . . . . . . . . . . . . . 98
X-tal Oscillator Clock (XTALCLK). . . . . . . . . . . . . . . . . . . . . 98
RC Oscillator Clock (RCCLK). . . . . . . . . . . . . . . . . . . . . . . . 99
Oscillator Out 2 (2OSCOUT) . . . . . . . . . . . . . . . . . . . . . . . . 99
Oscillator Out (OSCOUT). . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Oscillator (OSC)
Section 8. Oscillator (OSC)
Technical Data
95