Signal Name Conventions; Clock Source Summary; Mc68Hc908Ab32 Rev - Motorola MC68HC908AB32 Technical Data Manual

Hcmos microcontroller unit
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General Description

1.8 Signal Name Conventions

1.9 Clock Source Summary

Technical Data
40
Table 1-2. Signal Name Conventions
Signal name
CGMXCLK
Buffered version of OSC1 from clock generator module (CGM)
CGMOUT
PLL-based or OSC1-based clock output from CGM module)
Bus clock
CGMOUT divided by two
SPI serial clock
SPSCK
(see
16.13.3 SPSCK (Serial
External clock input for TIMA
TACLK
(see
11.9.1 TIMA Clock
External clock input for TIMB
TBCLK
(see
12.9.1 TIMB Clock
Table 1-3. Clock Source Summary
Module
ADC
CGMXCLK or bus clock
COP
CGMXCLK
CPU
Bus clock
EEPROM
CGMXCLK or bus clock
ROM
Bus clock
RAM
Bus clock
SPI
SPSCK
SCI
CGMXCLK
TIMA
Bus clock or PTD6/TACLK
TIMB
Bus clock or PTD4/TBCLK
PIT
Bus clock
KBI
Bus clock
General Description
Description
Clock))
Pin)
Pin)
Clock Source
MC68HC908AB32
Rev. 1.0
MOTOROLA

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