Datasheet

Analog-to-Digital Converter (ADC)
I/O Registers
MC68HC908GR8 — Rev 4.0 Technical Data
MOTOROLA Analog-to-Digital Converter (ADC) 89
If the external clock (CGMXCLK) is equal to or greater than 1 MHz,
CGMXCLK can be used as the clock source for the ADC. If
CGMXCLK is less than 1 MHz, use the PLL-generated bus clock as
the clock source. As long as the internal ADC clock is at
approximately 1 MHz, correct operation can be guaranteed.
1 = Internal bus clock
0 = External clock (CGMXCLK)
ADC input clock frequency
ADIV2 ADIV0–
----------------------------------------------------------------------- 1 M H z=
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