![](http://datasheet.mmic.net.cn/30000/M30218MC-AXXXFP_datasheet_2358657/M30218MC-AXXXFP_356.png)
341
A-D Converter
Mitsubishi microcomputers
M30218 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Figure 2.8.15. Set-up procedure of repeat sweep mode 1
b7
b0
Setting A-D conversion start flag
A-D control register 0 [Address 03D6 16]
ADCON0
A-D conversion start flag
1 : A-D conversion started
Transmitting conversion result to A-D register i
Eight low-order bits of A-D conversion result
b7
b0
(b15)
(b8)
b7
b0
A-D register 0
[Address 03C116, 03C016]
AD0
A-D register 1
[Address 03C316, 03C216]
AD1
A-D register 2
[Address 03C516, 03C416]
AD2
A-D register 3
[Address 03C716, 03C616]
AD3
A-D register 4
[Address 03C916, 03C816]
AD4
A-D register 5
[Address 03CB16, 03CA16] AD5
A-D register 6
[Address 03CD16, 03CC16] AD6
A-D register 7
[Address 03CF16, 03CE16] AD7
During 10-bit mode
Two high-order bits of A-D conversion result
During 8-bit mode
When read, the content is indeterminate
Start A-D conversion
b7
b0
0
Setting A-D conversion start flag
A-D control register 0 [Address 03D6 16]
ADCON0
A-D conversion start flag
0 : A-D conversion disabled
Stop A-D conversion
b7
b0
Selecting Sample and hold
A-D control register 2 [Address 03D4 16]
ADCON2
A-D conversion method select bit
1 : With sample and hold
b7
b0
Setting A-D control register 0 and A-D control register 1
A-D control register 0
[Address 03D6 16] ADCON0
A-D sweep pin select bit (Note)
0 0 : AN0 (1 pin)
0 1 : AN0, AN1 (2 pins)
1 0 : AN0 to AN2 (3 pins)
1 1 : AN0 to AN3 (4 pins)
b1 b0
b7
b0
A-D control register 1 [Address 03D7 16]
ADCON1
A-D operation mode select bit 1 (Note)
0 (Must always be “0” in repeat sweep mode 1)
8/10-bit mode select bit
0 : 8-bit mode
1 : 10-bit mode
Frequency select bit 1
0 : fAD/2 or fAD/4 is selected
1 : fAD is selected
Repeat sweep mode 1 is selected
(Note)
Nothing is arranged for this bit.
Fix “0” to this bit.
A-D conversion start flag
0 : A-D conversion disabled
Frequency select bit 0
0 : fAD/4 is selected
1 : fAD/2 is selected
0
01
1
Vref connect bit
1 : Vref connected
00
1
Invalid in repeat sweep mode 1
1
Converts non-selected pin after converting pins
selected through the A-D sweep pin select bit.
Note: Rewrite to analog input pin select bit after changing A-D operation mode.
1
Nothing is arranged for these bits.
Fix “0” to these bits.