Renesas M16C Series User Manual page 250

M30240 Group
A-D control register 1 (Note) A-D control register 1 (Note)
b7 b7 b6 b6 b5 b5 b4 b4
0 0 0 0
Figure 2.77: A-D converter related registers (2)
A-D control register 2 (Note)
b7 b6 b5 b4
A-D register i
(b15)
b7
Figure 2.78: A-D converter related registers (3)
Rev.1.00 Sep 24, 2003 Page 232 of 360
b3 b3 b2 b2 b1 b1 b0 b0
Symbol Symbol
ADCON1 ADCON1
Bit symbol Bit symbol Bit name Bit name
SCAN0 SCAN0
A-D sweep pin select bit A-D sweep pin select bit
SCAN1 SCAN1
A-D operation mode A-D operation mode
MD2 MD2
select bit 1 select bit 1
BITS BITS
8/10-bit mode select bit 8/10-bit mode select bit
CKS1 CKS1
Frequency select bit 1 Frequency select bit 1
Vref connect bit Vref connect bit
VCUT VCUT
Reserved bit Reserved bit
Note: If the A-D control register is rewritten during A-D conversion, the conversion result is Note: If the A-D control register is rewritten during A-D conversion, the conversion result is
indeterminate. indeterminate.
Symbol
b3 b2 b1 b0
ADCON2
0 0 0
Bit symbol Bit name
A-D conversion method
SMP
select bit
Reserved bit
Nothing is assigned.
In an attempt to write to these bits, write "0". The value, if read, turns out to
be "0".
Note: If the A-D control register is rewritten during A-D conversion, the conversion
result is indeterminate.
Symbol
ADi(i=0 to 7)
(b8)
b0 b7
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
Nothing is assigned.
In an attempt to write to these bits, write "0". The value, if
read, turns out to be "0".
Address Address When reset When reset
03D7 03D7 00 00
16 16 16 16
Function Function
When single sweep and repeat sweep When single sweep and repeat sweep
mode 0 are selected mode 0 are selected
b1 b0 b1 b0
0 0 : AN 0 0 : AN , AN , AN (2 pins) (2 pins)
0 0 1 1
0 1 : AN 0 1 : AN to AN to AN (4 pins) (4 pins)
0 0 3 3
1 0 : AN 1 0 : AN to AN to AN (6 pins) (6 pins)
0 0 5 5
1 1 : AN 1 1 : AN to AN to AN (8 pins) (8 pins)
0 0 7 7
When repeat sweep mode 1 is selected When repeat sweep mode 1 is selected
b1 b0 b1 b0
0 0 : AN 0 0 : AN (1 pin) (1 pin)
0 0
0 1 : AN 0 1 : AN , AN , AN (2 pins) (2 pins)
0 0 1 1
1 0 : AN 1 0 : AN to AN to AN (3 pins) (3 pins)
0 0 2 2
1 1 : AN 1 1 : AN to AN to AN (4 pins) (4 pins)
0 0 3 3
0 : Any mode other than repeat sweep 0 : Any mode other than repeat sweep
mode 1 mode 1
1 : Repeat sweep mode 1 1 : Repeat sweep mode 1
0 : 8-bit mode 0 : 8-bit mode
1 : 10-bit mode 1 : 10-bit mode
0 : f 0 : f /2 or f /2 or f /4 is selected /4 is selected
AD AD AD AD
1 : f 1 : f is selected is selected
AD AD
0 : Vref not connected 0 : Vref not connected
1 : Vref connected 1 : Vref connected
Always set to "0" Always set to "0"
Address
03D4
16
Function
0 : Without sample and hold
1 : With sample and hold
Always set to "0"
Address
03C0 to 03CF Indeterminate
16 16
b0
Function
A-D Converter
R R W W
When reset
XXXX0000
2
R W
When reset
R W