M30622 Mitsubishi, M30622 Datasheet - Page 158

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

D-A Converter
Figure 1.21.2. D-A control register
Figure 1.21.3. D-A converter equivalent circuit
DA0
AV
V
REF
SS
Tentative Specifications REV.A
D-A control register
D-A register
b7
D-A0 register0
b7
S
b6
pecifications in this manual are tentative and subject to change.
b5
Note 1: The above diagram shows an instance in which the D-A register is assigned 2A
Note 2: The same circuit as this is also used for D-A1.
Note 3: To reduce the current consumption when the D-A converter is not used, set the D-A output enable bit to 0
D-A0 output enable bit
b4
b3
MSB
and set the D-A register to 00
"0"
"1"
b2
2R
b1
b0
b0
Bit symbol
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”
Output value of D-A conversion
DA0E
DA1E
R
2R
Symbol
DACON
Symbol
DAi (i = 0,1)
D-A0 output enable bit
D-A1 output enable bit
R
2R
16
so that no current flows in the resistors Rs and 2Rs.
Bit name
03D8
Address
Address
03DC
16
R
2R
,
03DA
158
16
Function
16
0 : Output disabled
1 : Output enabled
0 : Output disabled
1 : Output enabled
R
2R
Indeterminate
When reset
When reset
00
16
Function
R
2R
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
.
R
2R
Mitsubishi microcomputers
R W
R W
R
M16C / 62T Group
W
R
2R
LSB
2R