mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 409

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

23.4.1 ADC Port I/O Pins
MC68HC908AS60 — Rev. 1.0
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)
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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