p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 482

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 17 A/D Converter
Note:
17.3.3
ADCR enables A/D conversion started by an external trigger signal.
Rev. 1.00 Sep. 21, 2006 Page 444 of 658
REJ09B0310-0100
Bit
2
1
0
Bit
7
6
5 to 0 
Bit Name
CH2
CH1
CH0
Bit Name
TRGS1
TRGS0
*
A/D Control Register (ADCR)
Only 0 can be written for clearing the flag.
Initial
Value
0
0
0
Initial
Value
0
0
All 1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Channel Select 2 to 0
Select analog input channels.
When SCAN = 0
000: AN0
001: AN1
010: AN2
011: AN3
100: AN4
101: AN5
110: AN6
111: AN7
Switch input channels when ADST = 0.
Description
Timer Trigger Select 1 and 0
Enable the start of A/D conversion by a trigger signal. Set
these bits only while A/D conversion is stopped (ADST = 0).
00: A/D conversion start by external trigger is disabled
01: Setting prohibited
10: A/D conversion start by conversion trigger from TMR
11: A/D conversion start by ADTRG pin
Reserved
The initial value should not be changed.
When SCAN = 1
000: AN0
001: AN0 and AN1
010: AN0 to AN2
011: AN0 to AN3
100: AN4
101: AN4 and AN5
110: AN4 to AN6
111: AN4 to AN7