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CHAPTER 13 8/10-BIT A/D CONVERTER
13.4.1 A/D Control Status Register 1 (ADCS1)
A/D control status register 1 (ADCS1) is used for starting conversion via software,
selecting a start trigger, enabling/disabling interrupt requests, checking the state of
interrupt requests, and indicating when the converter is temporarily stopped or
converting signals.
Higher bits of the A/D control status register (ADCS1)
Figure 13.4-2 "Configuration and functional outline of A/D control status register (ADCS1)"
shows the configuration and provides a functional outline of the A/D control status register
(ADCS1).
Figure 13.4-2 Configuration and functional outline of A/D control status register (ADCS1).
0000E6
H
282
bit15
bit14
bit13
bit12
BUSY
INT
INTE
PAUS
R/W
R/W
R/W
R/W
(0)
(0)
(0)
(0)
RESV
Be sure to set this bit to 0.
STRT
STS1
PAUS
INTE
INT
BUSY
R/W: Read/Write enabled
W: Write only
0, 1: Initial value
bit11
bit10
bit9
bit8
STS1
STS0
STRT
RESV
R/W
R/W
W
R/W
(0)
(0)
(0)
(0)
Reserved bit
A/D conversion start bit (effective only when
start via software is specified)
0
Do not start the A/D conversion function.
1
Starts the A/D conversion function.
STS0
A/D start source selection bit
0
0
Start via software
Start via external trigger or start
0
1
via software
1
0
Start via timer or start via software
Start via external trigger, start via timer,
1
1
or start via software
Temporary stop flag bit
A/D conversion operation is not temporarily
0
stopped.
1
A/D conversion operation is temporarily stopped.
Interrupt request permission bit
0
Disables output of interrupt requests.
Enables output of interrupt requests.
1
Interrupt request flag bit
During read
A/D conversion has
0
This bit is cleared.
not ended.
No changes and no
A/D conversion has
1
ended.
external effect
Converting bits
During read
A/D conversion is
A/D conversion is forcibly
0
being stopped.
stopped.
A/D conversion is
No changes and no
1
being performed.
external effect
bit7
bit0
(ADCS0)
During write
During write
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