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M16C/64C Group
28. D/A Converter
28.1
Introduction
The D/A converter is an 8-bit, R-2R type converter. There are two independent D/A converters.
Table 28.1 lists the D/A Converter Specifications and Figure 28.1 shows the D/A Converter Block
Diagram.
Table 28.1
D/A Converter Specifications
Item
D/A conversion method
Resolution
Figure 28.1
D/A Converter Block Diagram
Table 28.2
I/O Ports
Pin Name
DA0
DA1
Note:
1.
Set the direction bit of the ports sharing a pin to 0 (input mode). When the DAiE bit (i = 0, 1) in
the DACON register is set to 1 (output enabled), the corresponding port cannot be pulled up.
R01UH0092EJ0110 Rev.1.10
Jul 31, 2012
Specification
R-2R
8 bits
Data bus
DA0 register
R-2R resistor ladder
DA1 register
R-2R resistor ladder
I/O
(1)
Output
DA0E bit in the
DACON register
DA0
DA1E bit in the
DACON register
DA1
Function
D/A comparator output
28. D/A Converter
Page 647 of 807
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