MC68HC912D60A Datasheet, PDF (177/460 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Oscillator
MC68HC912D60A Oscillator Specification
CFLT
2
RFLT
-
OTA
+
-
ALC
+
RFLT
CFLT
RESD
BUF
BIAS
EN
GM
EXTAL
C_X-EX
XTAL
Resonator C_X-VSS
Figure 12-1. MC68HC912D60A Colpitts Oscillator Architecture
12.3.2 MC68HC912D60A Oscillator Design Guidelines
Proper and robust operation of the oscillator circuit requires excellent
board layout design practice. Poor layout of the application board can
contribute to EMC susceptibility, noise generation, slow starting
oscillators, and reaction to noise on the clock input buffer. In addition to
published errata for the MC68HC912D60A, the following guidelines
must be followed or failure in operation may occur.
MC68HC912D60A — Rev 3.0
MOTOROLA
Oscillator
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Technical Data
177