mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 154

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
12.3 Features
12.4 Functional Description
Data Sheet
154
$005D ADC Status and Control
Addr.
$005E
$005F
Register Name
ADC Data Register
ADC Input Clock
(ADICLK)
(ADSCR)
Register
Register
(ADR)
Features of the ADC module include:
Six ADC channels are available for sampling external sources at pins
PTC5–PTC0. An analog multiplexer allows the single ADC converter to
select one of the 6 ADC channels as ADC voltage input (ADCVIN).
ADCVIN is converted by the successive approximation register-based
counters. The ADC resolution is 8 bits. When the conversion is
completed, ADC puts the result in the ADC data register and sets a flag
or generates an interrupt.
ADC.
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
•
•
•
•
•
•
Table 12-1. ADC Register Summary
6 Channels ADC with Multiplexed Input
Linear Successive Approximation
8-Bit Resolution
Single or Continuous Conversion
Conversion Complete Flag or Conversion Complete Interrupt
Selectable ADC Clock
COCO
ADIV2
Bit 7
AD7
Analog-to-Digital Converter (ADC)
0
0
= Unimplemented
ADIV1
AIEN
AD6
6
0
0
ADCO
ADIV0
AD5
5
0
0
Figure 12-1
Indeterminate after Reset
ADCH4
AD4
4
1
0
0
shows a block diagram of the
ADCH3
AD3
3
1
0
0
MC68HC908BD48
ADCH2
AD2
Freescale Semiconductor
1
0
0
2
ADCH1
AD1
1
1
0
0
—
Rev. 2.1
ADCH0
Bit 0
AD0
1
0
0