HD6433935 Hitachi, HD6433935 Datasheet - Page 330

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

11.2
11.2.1
ADRRH and ADRRL together comprise a 16-bit read-only register for holding the results of
analog-to-digital conversion. The upper 8 bits of the data are held in ADRRH, and the lower 2
bits in ADRRL.
ADRRH and ADRRL can be read by the CPU at any time, but the ADRRH and ADRRL values
during A/D conversion are not fixed. After A/D conversion is complete, the conversion result is
stored as 10-bit data, and this data is held until the next conversion operation starts.
ADRRH and ADRRL are not cleared on reset.
11.2.2
AMR is an 8-bit read/write register for specifying the A/D conversion speed, external trigger
option, and the analog input pins.
Upon reset, AMR is initialized to H'30.
318
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Register Descriptions
A/D Result Registers (ADRRH, ADRRL)
A/D Mode Register (AMR)
ADR9
fixed
Not
R
7
ADR8 ADR7 ADR6 ADR5
CKS
fixed
R/W
Not
R
6
7
0
fixed
Not
R
5
TRGE
R/W
fixed
Not
R
4
6
0
ADRRH
fixed
Not
R
3
ADR4 ADR3 ADR2
—
—
fixed
5
1
Not
R
2
fixed
Not
R
1
—
—
4
1
fixed
Not
R
0
ADR1
fixed
Not
R
7
CH3
R/W
3
0
ADR0
fixed
Not
R
6
—
—
—
5
CH2
R/W
2
0
—
—
—
4
ADRRL
—
—
—
3
CH1
R/W
1
0
—
—
—
2
CH0
—
—
—
R/W
1
0
0
—
—
—
0