M16C62N Datasheet, PDF (131/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

A-D Converter
Mitsubishi microcomputers
M16C / 62N Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
A-D control register 2 (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
0
Symbol
ADCON2
Address
03D416
When reset
0000XXX02
Bit symbol
SMP
ADGSEL0
ADGSEL1
Bit name
A-D conversion method
select bit
Analog input group
select bit
Function
RW
0 : Without sample and hold
1 : With sample and hold
b2 b1
0 0 : Port10 group is selected
0 1 : Must not be set.
1 0 : Port0 group is selected (Note 2)
1 1 : Must not be set.
Reserved bit
Must always be set to “0”
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to
be “0”.
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion
result is indeterminate.
Note 2: In selecting port P0 group, P104 to P107 can not be used as a key-input
interrupt function input pin.
A-D register i
(b15)
b7
(b8)
b0 b7
Symbol
ADi(i=0 to 7)
Address
When reset
03C016 to 03CF16 Indeterminate
b0
Function
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”.
RW
Figure 1.15.3. A-D converter-related registers (2)
130