Renesas M16C Series User Manual page 258

M30240 Group
Selecting Sample and hold
b7
0 0 0
Setting A-D control register 0 and A-D control register 1
b7
0 0 1 0
Note: Rewrite the analog input pin select bit after changing A-D operation mode.
Setting A-D conversion start flag
b7
1
Reading conversion result
(b15)
b7
Figure 2.86: Set-up procedure of single-sweep mode
Rev.1.00 Sep 24, 2003 Page 240 of 360
b0
A-D control register 2 [Address 03D4
1
ADCON2
A-D conversion method select bit
1 : With sample and hold
b0
A-D control register 0
[Address 03D6 ] ADCON0
16
Invalid in single sweep mode
Single sweep mode is selected
(Note)
Trigger select bit
0 : Software trigger
A-D conversion start flag
0 : A-D conversion disabled
Frequency select bit 0
0 : f /4 is selected
AD
1 : f /2 is selected
AD
b0
A-D control register 0 [Address 03D6
ADCON0
A-D conversion start flag
1 : A-D conversion started
Start A-D conversion
Stop A-D conversion
A-D register 0
A-D register 1
(b8)
A-D register 2
b0 b7 b0
A-D register 3
A-D register 4
A-D register 5
A-D register 6
A-D register 7
Eight low-order bits of A-D conversion result
During 10-bit mode
Two high-order bits of A-D conversion result
During 8-bit mode
When read, the content is indeterminate
]
16
b7 b0
A-D control register 1 [Address 03D7
0 0 1 0
ADCON1
A-D sweep pin select bit (Note)
b1 b0
0 0 : AN
0 1 : AN
1 0 : AN
1 1 : AN
A-D operation mode select bit 1 (Note)
0 (Must always be "0" in Single sweep mode)
8/10-bit mode select bit
0 : 8-bit mode
1 : 10-bit mode
Frequency select bit 1
0 : f /2 or f
AD
1 : f is selected
AD
Vref connect bit
1 : Vref connected
Reserved bits. Always set to "0"
]
16
[Address 03C1 , 03C0 ] AD0
16 16
[Address 03C3 , 03C2 ] AD1
16 16
[Address 03C5 , 03C4 ] AD2
16 16
[Address 03C7 , 03C6 ] AD3
16 16
[Address 03C9 , 03C8 ] AD4
16 16
[Address 03CB , 03CA ] AD5
16 16
[Address 03CD , 03CC ] AD6
16 16
[Address 03CF , 03CE ] AD7
16 16
A-D Converter
]
16
, AN (2 pins)
0 1
to AN (4 pins)
0 3
to AN (6 pins)
0 5
to AN (8 pins)
0 7
/4 is selected
AD