Rev. 1.0, 02/00, page 1055 of 1141
H'D135: A/D Control/Status Register ADCSR: A/D Converter
0
0
1
0
R
2
0
R
3
0
4
0
R/W
5
0
6
7
R/(W)*
R
R/W
ADIE
0
R/(W)*
SEND
SST
HST
BUSY
SCNL
HEND
1
A/D interrupt enable bit
0 Interrupt (ADI) upon A/D conversion end is disabled
(Initial value)
1 Interrupt (ADI) upon A/D conversion end is enabled
Software A/D start flag
0 Read: Indicates that software-triggered A/D conversion
has ended or been stopped
(Initial value)
Write: Software-triggered A/D conversion is aborted
1 Read: Indicates that software-triggered A/D conversion
is in progress
Write: Starts software-triggered A/D conversion
Busy flag
0 No contention for A/D conversion
(Initial value)
1 Indicates an attempt to execute software-triggered
A/D conversion while hardware- or external-triggered
A/D conversion was in progress.
Software-triggered A/D conversion cancel flag
0 No contention for A/D conversion
(Initial value)
1 Indicates that software-triggered A/D
conversion was canceled by the start of
hardware-triggered A/D conversion.
Hardware A/D status flag
0 Read: Hardware- or external -triggered A/D conversion is
not in progress
(Initial value)
Write: Hardware- or external-triggered A/D conversion is
aborted
1 Hardware- or external-triggered A/D conversion is in
progress.
Software A/D end flag
0 [Clearing conditions]
(Initial value)
When 0 is written after reading 1
1 [Setting conditions]
When software-triggered A/D conversion has ended
Hardware A/D end flag
0 [Clearing conditions]
(Initial value)
When 0 is written after reading 1
1 [Setting conditions]
When hardware- or external-triggered A/D
conversion has ended
Initial value :
—
—
Note: * Only 0 can be written to clear the flag.
Bit
R/W
:
: