M16C1N Datasheet, PDF (142/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
15. D/A Converter
D/A control register
b7 b6 b5 b4 b3 b2 b1 b0
0
Symbol
DACON
Address
00DC16
When reset
0016
Bit symbol
Bit name
Function
RW
DAE
D/A output enable bit
0 : Output disabled
1 : Output enabled
RW
Nothing is assigned.
When write, set "0". When read, the value of this bit is "0".
Reserved bit
Set to "0"
RW
Nothing is assigned.
When write, set "0". When read, the value of these bits are "0".
D/A register
b7
b0
Symbol
DA
Address
00D816
When reset
Indeterminate
Function
RW
Output value of D/A conversion
RW
Figure 15.2 D/A control register
D/A output enable bit
"0"
R
DA
"1"
2R
2R
MSB
D/A register 0 _"0"
"1"
VSS
VREF
R
2R
R
2R
R
2R
R
2R
R
2R
R
2R
2R
LSB
Note 1: In the above figure, the D/A register value is "2A16".
Note 2: To save power when not using the D/A converter, set the D/A output enable bit to "0"
and the D/A register to "0016", and prevent current flowing to the R-2R resistance.
Figure 15.3 D/A converter equivalent circuit
Rev.1.00 Oct 20, 2004 page 130 of 222
REJ09B0007-0100Z