MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 252

• Manufacturer Part Number: MC68HC908JG16FA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Analog-to-Digital Converter (ADC)
Technical Data
252
Notes:
1. If any unused channels are selected, the resulting ADC conversion will be unknown.
ADCH4
0
0
0
0
0
0
0
0
0
1
1
1
1
NOTE:
NOTE:
ADCH3
0
0
0
0
0
0
0
0
1
1
1
1
1
ADCO — ADC Continuous Conversion Bit
ADCH[4:0] — ADC Channel Select Bits
Care should be taken when using a port pin as both an analog and a
digital input simultaneously to prevent switching noise from corrupting
the analog signal.
Recovery from the disabled state requires one conversion cycle to
stabilize.
ADCH2
When set, the ADC will convert samples continuously and update the
ADR register at the end of each conversion. Only one conversion is
allowed when this bit is cleared. Reset clears the ADCO bit.
ADCH[4:0] form a 5-bit field which is used to select one of the ADC
channels or reference voltages. The five channel select bits are
detailed in the
Freescale Semiconductor, Inc.
0
0
0
0
1
1
1
1
0
1
1
1
1
For More Information On This Product,
1 = Continuous ADC conversion
0 = One ADC conversion
Table 13-1. MUX Channel Select
Analog-to-Digital Converter (ADC)
ADCH1
Go to: www.freescale.com
0
0
1
1
0
0
1
1
0
0
0
1
1
Table
ADCH0
13-1.
0
1
0
1
0
1
0
1
0
0
1
0
1
ADC Channel
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
—
—
—
MC68HC908JG16
PTA0/KBA0/AD0
PTA1/KBA1/AD1
PTA2/KBA2/AD2
PTA3/KBA3/AD3
PTA4/KBA4/AD4
PTA5/KBA5/AD5
PTA6/KBA6/AD6
PTA7/KBA7/AD7
ADC power off
Input Select
Unused
V
V
REFHL
REFH
MOTOROLA
(1)
—
Rev. 1.0