UPD17073 NEC, UPD17073 Datasheet - Page 100
UPD17073
Manufacturer Part Number
UPD17073
Description
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
Manufacturer
NEC
Datasheet
1.UPD17073.pdf
(226 pages)
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13.3 Input Selector Block
Pull-Down Resistor Select Register.
100
Figure 13-3 shows the configuration of the input selector block.
The input selector block selects the pin to be used by using the A/D converter channel select register.
Two or more pins cannot be used at the same time with the A/D converter.
Figure 13-4 shows the configuration and function of the A/D converter channel select register.
For the configuration and function of the port 1A pull-down resistor select register, refer to Figure 10-1 Port 1A
P1A2/AD0
P1A3/AD0
Figure 13-3. Configuration of Input Selector Block
Each I/O port
Selector
ADCCH1 flag
ADCCH0 flag
Compare block
V
ADCIN
PD17072,17073
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