hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 337

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

Bits 3 to 0: Channel select (CH3 to CH0)
Bits 3 to 0 select the analog input channel.
The channel selection should be made while bit ADSF is cleared to 0.
Bit 3
CH3
0
0
0
0
0
1
1
1
1
Note: * Don’t care
12.2.3
The A/D start register (ADSR) is an 8-bit read/write register for starting and stopping A/D
conversion.
A/D conversion is started by writing 1 to the A/D start flag (ADSF) or by input of the designated
edge of the external trigger signal, which also sets ADSF to 1. When conversion is complete, the
converted data is set in ADRRH and ADRRL, and at the same time ADSF is cleared to 0.
322
Bit
Initial value
Read/Write
A/D Start Register (ADSR)
Bit 2
CH2
0
1
1
1
1
0
0
0
0
ADSF
R/W
7
0
Bit 1
CH1
*
0
0
1
1
0
0
1
1
—
—
6
1
Bit 0
CH0
*
0
1
0
1
0
1
0
1
—
—
5
1
Analog Input Channel
No channel selected
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
—
—
4
1
—
—
3
1
—
—
2
1
—
—
1
1
(initial value)
—
—
0
1