MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 354

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Analog-to-Digital Converter (ADC)
17.7 I/O Registers
17.7.1 ADC Status and Control Register
Data Sheet
354
Address:
These I/O registers control and monitor ADC operation:
Function of the ADC status and control register is described here.
COCO — Conversions Complete Bit
AIEN — ADC Interrupt Enable Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
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When the AIEN bit is a logic 0, the COCO is a read-only bit which is
set each time a conversion is completed. This bit is cleared whenever
the ADSCR is written, or whenever the ADC clock control register is
written, or whenever the ADC data register low, ADRLx, is read.
If the AIEN bit is logic 1, the COCO bit always read as logic 0. ADC
interrupt will be generated at the end if an ADC conversion. Reset
clears the COCO 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,
ADR0, is read or the ADSCR is written. Reset clears the AIEN bit.
For More Information On This Product,
Figure 17-3. ADC Status and Control Register (ADSCR)
1 = Conversion completed (AIEN = 0)
0 = Conversion not completed (AIEN = 0)/CPU interrupt (AIEN=1)
1 = ADC interrupt enabled
0 = ADC interrupt disabled
ADC status and control register (ADSCR) — $0057
ADC clock control register (ADICLK) — $0058
ADC data register high:low 0 (ADRH0:ADRL0) — $0059:$005A
ADC data register low 1–3 (ADRL1–ADRL3) — $005B–$005D
ADC auto-scan control register (ADASCR) — $005E
COCO
$0057
0
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AIEN
0
ADCO
0
ADCH4
1
ADCH3
MC68HC908AP Family — Rev. 2.5
1
ADCH2
1
ADCH1
1
MOTOROLA
ADCH0
1