MC68HC908AS60MFN MOTOROLA [Motorola, Inc], MC68HC908AS60MFN Datasheet - Page 409
MC68HC908AS60MFN
Manufacturer Part Number
MC68HC908AS60MFN
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AS60MFN.pdf
(454 pages)
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23.4.1 ADC Port I/O Pins
MC68HC908AS60 — Rev. 1.0
MOTOROLA
INTERNAL
DATA BUS
AIEN
INTERRUPT
LOGIC
READ DDRB/DDRB
WRITE DDRB/DDRD
WRITE PTB/PTD
READ PTB/PTD
COCO
BUS CLOCK
CONVERSION
COMPLETE
CGMXCLK
PTD6/TACLK
general-purpose input/output (I/O) pins that share with the ADC
channels.
The channel select bits define which ADC channel/port pin will be used
as the input signal. The ADC overrides the port I/O logic by forcing that
pin as input to the ADC. The remaining ADC channels/port pins are
controlled by the port I/O logic and can be used as general-purpose I/O.
Writes to the port register or DDR will not have any effect on the port pin
Freescale Semiconductor, Inc.
For More Information On This Product,
RESET
Figure 23-1. ADC Block Diagram
Analog-to-Digital Converter (ADC-15)
Go to: www.freescale.com
ADIV[2:0]
ADC DATA REGISTER
–
CLOCK
GENERATOR
PTD0 and PTB7/ATD7–PTB0/ATD0 are
DDRBx/DDRDx
ADC
PTBx/PTDx
ADC CLOCK
ADICLK
ADC VOLTAGE IN
ADCVIN
Analog-to-Digital Converter (ADC-15)
DISABLE
DISABLE
CHANNEL
SELECT
ADC CHANNEL x
PTBx/PTDx
Functional Description
ADCH[4:0]
Technical Data
409
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