Datasheet

Section 18 D/A Converter
Rev.7.00 Mar. 18, 2009 page 828 of 1136
REJ09B0109-0700
• DACR45 (Available only for the H8S/2377, H8S/2377R, H8S/2378 0.18μm F-ZTAT Group,
and H8S/2378R 0.18μm F-ZTAT Group)
Bit Bit Name Initial Value R/W Description
7 DAOE4 0 R/W
D/A Output Enable 5
Controls D/A conversion and analog output.
0: Analog output (DA5) is disabled
1: Channel 5 D/A conversion is enabled; analog output
(DA5) is enabled
6 DAOE5 0 R/W
D/A Output Enable 4
Controls D/A conversion and analog output.
0: Analog output (DA4) is disabled
1: Channel 4 D/A conversion is enabled; analog output
(DA4) is enabled
5 DAE 0 R/W
D/A Enable
Used together with the DAOE4 and DAOE5 bits to
control D/A conversion. When the DAE bit is cleared to
0, channel 4 and 5 D/A conversions are controlled
independently. When the DAE bit is set to 1, channel 4
and 5 D/A conversions are controlled together.
Output of conversion results is always controlled
independently by the DAOE4 and DAOE5 bits. For
details, see table 18.4.
4 to
0
— All 1 — Reserved
These bits are always read as 1 and cannot be modified.
Table 18.4 Control of D/A Conversion
Bit 5
DAE
Bit 7
DAOE5
Bit 6
DAOE4 Description
0 0 0 D/A conversion disabled
1 Channel 4 D/A conversion enabled, channel5 D/A conversion disabled
1 0 Channel 5 D/A conversion enabled, channel4 D/A conversion disabled
1 Channel 4 and 5 D/A conversions enabled
1 0 0 D/A conversion disabled
1 Channel 4 and 5 D/A conversions enabled
1 0
1