s908qc16g0cdte Freescale Semiconductor, Inc, s908qc16g0cdte Datasheet - Page 44

• Manufacturer Part Number: s908qc16g0cdte
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

10-Bit Analog-to-Digital Converter (ADC10) Module
ADLSMP — Long Sample Time Configuration
ACLKEN — Asynchronous Clock Source Enable
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This bit configures the sample time of the ADC10 to either 3.5 or 23.5 ADCK clock cycles. This adjusts
the sample period to allow higher impedance inputs to be accurately sampled or to maximize
conversion speed for lower impedance inputs. Longer sample times can also be used to lower overall
power consumption in continuous conversion mode if high conversion rates are not required.
This bit enables the asynchronous clock source as the input clock to generate the internal clock ADCK,
and allows operation in stop mode. The asynchronous clock source will operate between 1 MHz and
2 MHz if ADLPC is clear, and between 0.5 MHz and 1 MHz if ADLPC is set.
1 = Long sample time (23.5 cycles)
0 = Short sample time (3.5 cycles)
1 = The asynchronous clock is selected as the input clock source (the clock generator is only
0 = ADICLK specifies the input clock source and conversions will not continue in stop mode
enabled during the conversion)
MC68HC08QY/QT Family Data Sheet, Rev. 2
Freescale Semiconductor