m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 348

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 12.11.2 Initial setting example for related registers in repeat sweep mode 1 (1)
Selection of comparator function
b7
A-D control registers 0, 1, and 2
b7
b7
b7
0
0
0
0
0
0
0
0 0
1 1
7905 Group User’s Manual Rev.1.0
Continued on Figure 12.11.3.
1
b0
b0
b0
b0
AN
AN
AN
AN
AN
AN
AN
AN
Comparator function select register 0
(Address DC
Repeat sweep mode 1
A-D conversion frequency (
A-D conversion start bit
0
1
2
3
4
5
6
7
0 : A-D conversion halts.
See Table 12.2.1.
A-D control register 1
(Address 1F
A-D sweep pin select bits
Resolution select bit
A-D conversion frequency (
A-D control register 2
(Address DB
Repeat sweep mode 1
V
Analog input pin select bits 1
A-D control register 0
(Address 1E
b1 b0
0 : 8-bit resolution mode
1 : 10-bit resolution mode
See Table 12.2.1.
REF
0 0 : AN
0 1 : AN
1 0 : AN
1 1 : AN
b3
0 : Pin V
0 X X X : AN
0 : Comparator function is not selected.
1 : Comparator function is selected.
b2
connection select bit
b1 b0
0
0
0
0
REF
16
and AN
to AN
to AN
)
16
16
0
16
connected
)
)
to AN
)
2
3
1
: It may be either “0” or “1.”
(1 pin)
(2 pins)
(3 pins)
(4 pins)
7
selected
AD
AD
) select bit 0
) select bit 1
12.11 Repeat sweep mode 1
A-D CONVERTER
12-37