mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 360

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
19.8.1 ADC Status and Control Register
Technical Data
360
Address:
These paragraphs describe the function of the ADC status and control
register (ADSCR).
COCO/IDMAS — Conversions Complete / Interrupt DMA Select
AIEN — ADC Interrupt Enable
Reset:
Read:
Write:
When AIEN bit is a logic 0, the COCO/IDMAS is a read-only bit which
is set each time a conversion is completed except in the continous
conversion mode where it is set after the first conversion. This bit is
cleared whenever the ADC status and control register is written or
whenever the ADC data register is read.
If AIEN bit is a logic 1, the COCO/IDMAS is a read/write bit which
selects either CPU or DMA to service the ADC interrupt request.
Reset clears this bit.
When this bit is set, an interrupt is generated at the end of an ADC
conversion. The interrupt signal is cleared when the data register is
read or the status/control register is written. Reset clears the AIEN bit.
Figure 19-2. ADC Status and Control Register (ADSCR)
1 = Conversion completed (AIEN = 0)/DMA interrrupt (AIEN = 1)
0 = Conversion not completed (AIEN = 0)/CPU interrupt (AIEN = 1)
1 = ADC interrupt enabled
0 = ADC interrupt disabled
COCO/
IDMAS
$0017
Bit 7
Analog-to-Digital Converter (ADC)
0
AIEN
6
0
ADCO
5
0
ADCH4
4
0
ADCH3
3
0
MC68HC708MP16
ADCH2
Freescale Semiconductor
2
0
ADCH1
1
0
—
Rev. 3.1
ADCH0
Bit 0
0