m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 356

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

analog voltage, and the analog voltage is output from pin DA
be expressed as follows :
13.4 Setting method
Figure 13.4.1 shows an initial setting example of registers related to the D-A converter.
Fig. 13.4.1 Initial setting example of registers related to D-A converter
13.5 Operation description
When any of the D-A
The relationship between analog output voltage V and value n, which has been loaded in D-A register i, can
V = V
V
REF
: Reference voltage
REF
256
n
(n = 0 to 255)
i
output enable bits is set to “1,” the value loaded in D-A register i is converted to an
Setting of the D-A
Setting of a value to D-A register i
b7
b7
Analog voltage output started
i
output enable bit to “1”.
7905 Group User’s Manual Rev.1.0
A value (00
13.4 Setting method, 13.5 Operation description
b0
b0
D-A control register (Address 96
D-A register 0 (Address 98
D-A register 1 (Address 99
16
D-A
D-A
to FF
0
1
output enable bit
output enable bit
16
) to be D-A converted is set.
i
.
16
16
)
)
D-A CONVERTER
16
)
13-5