HD64F2145 Datasheet, PDF (604/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Bit Bit Name Initial Value R/W Description
2 CH2
0
R/W Channel Select 2 to 0
1 CH1
0
0 CH0
0
R/W Select analog input channels. The input channel
R/W
setting must be made when conversion is halted
(ADST = 0).
When SCAN = 0:
When SCAN = 1:
000: AN0
000: AN0
001: AN1
001: AN0 and AN1
010: AN2
010: AN0 to AN2
011: AN3
011: AN0 to AN3
100: AN4
100: AN4
101: AN5
101: AN4 and AN5
110: AN6, or CIN0 to
CIN7
110: AN4 to AN6 or CIN0
to CIN7
111: AN7, or CIN8 to
CIN15
111: AN4 to AN6 or CIN0
to CIN7, or AN7 or CIN8
to CIN15
Note:* Only 0 can be written for clearing the flag.
21.3.3 A/D Control Register (ADCR)
ADCR enables A/D conversion started by an external trigger signal.
Bit Bit Name Initial Value R/W
7 TRGS1 0
R/W
6 TRGS0 0
R/W
5 to —
All 1
R
0
Description
Timer Trigger Select 1 and 0
Enable the start of A/D conversion by a trigger signal.
Only set bits TRGS1 and TRGS0 when conversion is
halted (ADST = 0).
00: A/D conversion start by external trigger is disabled
01: A/D conversion start by external trigger is disabled
10: A/D conversion start by conversion trigger from
TMR is enabled
11: A/D conversion start by $'75* pin is enabled
Reserved
These bits are always read as 1 and cannot be
modified.
Rev. 2.0, 08/02, page 564 of 788