sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 283

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

8.1.2
8.1.2.1
There is software programmable selection between performing single or continuous conversion on a
single channel or multiple channels.
8.1.2.2
Freescale Semiconductor
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•
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Stop Mode
— ICLKSTP=0 (in ATDCTL2 register)
— ICLKSTP=1 (in ATDCTL2 register)
Wait Mode
ADC12B8C behaves same in Run and Wait Mode. For reduced power consumption continuous
conversions should be aborted before entering Wait mode.
Freeze Mode
In Freeze Mode the ADC12B8C will either continue or finish or stop converting according to the
FRZ1 and FRZ0 bits. This is useful for debugging and emulation.
Entering Stop Mode aborts any conversion sequence in progress and if a sequence was aborted
restarts it after exiting stop mode. This has the same effect/consequences as starting a
conversion sequence with write to ATDCTL5. So after exiting from stop mode with a
previously aborted sequence all flags are cleared etc.
A/D conversion sequence seamless continues in Stop Mode based on the internally generated
clock ICLK as ATD clock. For conversions during transition from Run to Stop Mode or vice
versa the result is not written to the results register, no CCF flag is set and no compare is done.
When converting in Stop Mode (ICLKSTP=1) an ATD Stop Recovery time
required to switch back to bus clock based ATDCLK when leaving Stop Mode. Do not access
ATD registers during
Modes of Operation
Conversion Modes
MCU Operating Modes
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
this time
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Analog-to-Digital Converter (ADC12B8CV1) Block Description
t
ATDSTPRCV
is
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