MC68HC08AS32 Datasheet, PDF (315/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Analog-to-Digital Converter (ADC)
I/O Registers
19.7.3 ADC Voltage In (ADCVIN)
ADCVIN is the input voltage signal from one of the 15 ADC channels to
the ADC module.
19.8 I/O Registers
These I/O registers control and monitor ADC operation:
• ADC status and control register (ADSCR)
• ADC data register (ADR)
• ADC input clock register (ADICLK)
19.8.1 ADC Status and Control Register
The following paragraphs describe the function of the ADC status and
control register.
Address: $0038
Bit 7
6
5
4
3
2
1
Bit 0
Read: COCO
AIEN ADCO ADCH4 ADCH3 ADCH2 ADCH1 ADCH0
Write: R
Reset: 0
0
0
1
1
1
1
1
R = Reserved
Figure 19-2. ADC Status and Control Register (ADSCR)
COCO — Conversions Complete Bit
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. Reset clears this bit.
MC68HC08AS32 — Rev. 3.0
MOTOROLA
Analog-to-Digital Converter (ADC)
Advance Information
315