MC68HC908GR8A_07 Datasheet, PDF (54/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Analog-to-Digital Converter (ADC)
The ADC requires a clock rate of approximately 1 MHz for correct operation. If the selected clock source
is not fast enough, the ADC will generate incorrect conversions. See 19.12 ADC Characteristics.
f_ADIC =
f_CGMXCLK or bus frequency
ADIV[2:0]
≅ 1 MHz
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
54
Freescale Semiconductor