MC908KX2MDWE Datasheet, PDF (46/210 Pages) Freescale Semiconductor, Inc – High-performance M68HC08 architecture, Fully upward-compatible object code with M6805, M146805, and M68HC05 Families

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 17.9 Trimmed Accuracy
of the Internal Clock Generator.
f_ADIC
=
f_{⎯CG⎯MX⎯C⎯LK⎯}or_⎯b_⎯us_⎯fre_⎯q_⎯ue_⎯nc_⎯y
ADIV[2:0]
≅
1
MHz
NOTE
During the conversion process, changing the ADC clock will result in an
incorrect conversion.
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
46
Freescale Semiconductor