Datasheet

19.4.7 MCU wait mode operation
Wait mode is a low-power consumption standby mode from which recovery is fast
because the clock sources remain active. If a conversion is in progress when the MCU
enters wait mode, it continues until completion. Conversions can be initiated while the
MCU is in wait mode by means of the hardware trigger or if continuous conversions are
enabled.
The bus clock, bus clock divided by two, ALTCLK and ADACK are available as
conversion clock sources while in wait mode.
ADC_SC1[COCO] is set by a conversion complete event that generates an ADC interrupt
to wake the MCU from wait mode if the ADC interrupt is enabled (ADC_SC1[AIEN] =
1).
19.4.8 MCU stop3 mode operation
Stop mode is a low-power consumption standby mode during which most or all clock
sources on the MCU are disabled.
19.4.8.1 Stop3 mode with ADACK disabled
If the asynchronous clock, ADACK, is not selected as the conversion clock, executing a
stop instruction aborts the current conversion and places the ADC in its idle state. The
contents of ADC_RH and ADC_RL are unaffected by stop3 mode. After exiting from
stop3 mode, a software or hardware trigger is required to resume conversions.
19.4.8.2 Stop3 mode with ADACK enabled
If ADACK is selected as the conversion clock, the ADC continues operation during stop3
mode. For guaranteed ADC operation, the MCU's voltage regulator must remain active
during stop3 mode.See the module introduction for configuration information for this
MCU.
If a conversion is in progress when the MCU enters stop3 mode, it continues until
completion. Conversions can be initiated while the MCU is in stop3 mode by means of
the hardware trigger or if continuous conversions are enabled.
Functional description
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
546 Freescale Semiconductor, Inc.