mc68hc908ap8cfa Freescale Semiconductor, Inc, mc68hc908ap8cfa Datasheet - Page 249

• Manufacturer Part Number: mc68hc908ap8cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 15
Analog-to-Digital Converter (ADC)
15.1 Introduction
This section describes the analog-to-digital converter (ADC). The ADC is a 8-channel 10-bit linear
successive approximation ADC.
15.2 Features
Features of the ADC module include:
Freescale Semiconductor
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Eight channels with multiplexed input
High impedance buffered input
Linear successive approximation with monotonicity
10-bit resolution
Single or continuous conversion
Auto-scan conversion on four channels
Conversion complete flag or conversion complete interrupt
Selectable ADC clock
Conversion result justification
–
–
–
–
ADC Data Register High 0
ADC Data Register Low 0
ADC Data Register Low 1
ADC Status and Control
8-bit truncated mode
Right justified mode
Left justified mode
Left justified sign mode
Register Name
ADC Clock Control
(ADICLK)
(ADSCR)
(ADRH0)
(ADRL0)
(ADRL1)
Register
Register
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Figure 15-1. ADC I/O Register Summary
MC68HC908AP Family Data Sheet, Rev. 4
COCO
ADIV2
Bit 7
AD9
ADx
ADx
R
R
R
0
0
0
0
0
ADIV1
AIEN
ADx
ADx
AD8
R
R
R
6
0
0
0
0
0
ADCO
ADIV0
ADx
ADx
AD7
R
R
R
5
0
0
0
0
0
ADICLK
ADCH4
ADx
ADx
AD6
R
R
R
4
1
0
0
0
0
MODE1
ADCH3
ADx
ADx
AD5
R
R
R
3
1
0
0
0
0
MODE0
ADCH2
ADx
ADx
AD4
R
R
R
2
1
1
0
0
0
ADCH1
ADx
ADx
AD3
R
R
R
1
1
0
0
0
0
0
ADCH0
Bit 0
AD2
ADx
ADx
R
R
R
R
1
0
0
0
0
0
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