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(6) A/D port configuration register (ADPC)
This register switches the ANI0/P20 to ANI7/P27 pins to analog input of A/D converter or digital I/O of port.
ADPC can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 10H.
Figure 10-10. Format of A/D Port Configuration Register (ADPC)
Address: F0017H
After reset: 10H
Symbol
7
ADPC
0
ADPC4 ADPC3 ADPC2 ADPC1 ADPC0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
Other than above
Cautions 1. Set a channel to be used for A/D conversion in the input mode by using port mode registers 2
(PM2).
2. Do not set the pin that is set by ADPC as digital I/O by ADS.
3. When using all ANI0/P20 to ANI7/P27 pins as digital I/O (D), the setting can be done by
ADPC4 to ADPC0 = either 01000 or 10000.
4. P20/ANI0 to P27/ANI7 are set as analog inputs in the order of P27/ANI7, P26/ANI6, ...,
P20/ANI0 by the A/D port configuration register (ADPC). When using P20/ANI0 to P27/ANI7 as
analog inputs, start designing from P27/ANI7.
CHAPTER 10 A/D CONVERTER
R/W
6
5
0
0
ADPC4
ANI7
/P27
0
0
0
A
0
0
1
A
0
1
0
A
0
1
1
A
1
0
0
A
1
0
1
A
1
1
0
A
1
1
1
A
0
0
0
D
0
0
0
D
Setting prohibited
User's Manual U17854EJ9V0UD
4
3
ADPC3
ADPC2
Analog Input (A)/digital I/O (D) switching
ANI6
ANI5
ANI4
/P26
/P25
/P24
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
A
D
D
D
D
D
D
D
D
D
D
D
2
1
ADPC1
ADPC0
ANI3
ANI2
ANI1
/P23
/P22
/P21
A
A
A
A
A
A
A
A
D
A
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
0
ANI0
/P20
A
D
D
D
D
D
D
D
D
D
311
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