HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 552

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 A/D Converter
Bits 1 and 0—Channel Select 1 and 0 (CH1, CH0): Together with the SCAN bit, these bits
select the analog input channel(s).
Only set the input channel while conversion is stopped.
Bit 1
CH1
0
1
14.2.3
ADCR is an 8-bit readable/writable register that enables or disables external triggering of A/D
conversion operations.
ADCR is initialized to H'3F by a reset, and in hardware standby mode or module stop mode.
Bits 7 and 6—Timer Trigger Select 1 and 0 (TRGS1, TRGS0): Select enabling or disabling of
the start of A/D conversion by a trigger signal. Only set bits TRGS1 and TRGS0 while conversion
is stopped.
Bit 7
TRGS1
0
1
Bits 5 to 0—Reserved: These bits are reserved; they are always read as 1 and cannot be modified.
Rev.3.00 Mar. 26, 2007 Page 510 of 772
REJ09B0355-0300
Bit
Initial value
R/W
A/D Control Register (ADCR)
Bit 0
CH0
0
1
0
1
Bit 6
TRGS0
0
1
0
1
:
:
:
TRGS1
R/W
7
0
Description
Single Mode (SCAN = 0)
AN0
AN1
AN2
AN3
Description
Start of A/D conversion by external trigger is disabled
Start of A/D conversion by external trigger (TPU) is enabled
Start of A/D conversion by external trigger (8-bit timer) is enabled
Start of A/D conversion by external trigger pin is enabled
TRGS0
R/W
6
0
—
—
5
1
(Initial value)
—
—
4
1
—
—
3
1
Scan Mode (SCAN = 1)
AN0
AN0, AN1
AN0 to AN2
AN0 to AN3
—
—
2
1
—
—
1
1
(Initial value)
—
—
0
1