mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 413

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

23.8 I/O Registers
23.8.1 ADC Status and Control Register
MC68HC908AS60 — Rev. 1.0
Address:
These I/O registers control and monitor ADC operation:
The following paragraphs describe the function of the ADC status and
control register.
COCO — Conversions Complete Bit
Reset:
Read:
Write:
•
•
•
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 ADC status and control register is written or whenever the ADC
data register is read.
If the AIEN bit is a logic 1, the COCO is a read/write bit which selects
the CPU to service the ADC interrupt request. Reset clears this bit.
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Figure 23-2. ADC Status and Control Register (ADSCR)
1 = Conversion completed (AIEN = 0)
0 = Conversion not completed (AIEN = 0)
ADC status and control register (ADSCR)
ADC data register (ADR)
ADC clock register (ADICLK)
COCO
$0038
Analog-to-Digital Converter (ADC-15)
Bit 7
or
CPU interrupt enabled (AIEN = 1)
R
R
0
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= Reserved
AIEN
6
0
ADCO
5
0
ADCH4
4
1
Analog-to-Digital Converter (ADC-15)
ADCH3
3
1
ADCH2
2
1
ADCH1
1
1
Technical Data
I/O Registers
ADCH0
Bit 0
1