Fujitsu F2MCTM-16LX Hardware Manual page 364

CHAPTER 18 8-/10-BIT A/D CONVERTER
Table 18.3-2 Function of Each Bit of A/D Control Status Register (High) (ADCS1) (2/2)
bit12
bit11,
bit10
bit9
bit8
348
Bit name
PAUS:
This bit indicates the A/D conversion operating state when the EI
Pause flag bit
function is used.
• The PAUS bit is enabled only when the EI
• When next A/D conversion terminates before the A/D conversion
• After transfer of the A/D conversion results to memory, the 8-/10-bit
Note:
• See "18.5.5 A/D-converted Data Protection Function" for the
• This bit is not cleared even if the pause state is cancelled. To clear
STS1, STS0: These bits select the trigger to start the 8-/10-bit A/D converter.
A/D conversion start • 00
trigger select bits
• 01
• 10
• 11
Note:
• When the falling edge is detected in the ADTG pin at selected
• If two or more start triggers are set (other than STS1, STS0="00
• Start trigger setting should be changed when the operation of
STRT: This bits starts the 8-/10-bit A/D converter by software.
A/D conversion When set to "1": Starts 8-/10-bit A/D converter
software start bit • If A/D conversion pauses in the pause-conversion mode, it is
When set to "0": Invalid. The state remains unchanged.
Note:
Undefined bit
result completes the transfer from the A/D data register (ADCR0, 1)
to memory, the A/D conversion pauses in order to prevent previous
data from being overwritten. When the A/D conversion pauses, the
PAUS bit is set to "1".
A/D converter automatically resumes A/D conversion.
conversion data protection function.
this bit, write "0" to it.
: Software start
B
: External pin trigger or software start
B
: Software start
B
: External pin trigger or software start
B
external terminal trigger (01
"10 "), the 8-/10-bit A/D converter is started by the first-generated
B
start trigger.
resource generating a start trigger is stopped (trigger is inactive).
resumed by writing 1 to the STRT bit.
• The read-modify-write instructions read "0".
• The byte/word command reads "1".
• Do not perform forcible termination (BUSY = 0) and software
start (STRT = 1) of the 8-/10-bit A/D converter simultaneously.
• Read: "1" is always read.
• Write: No effect
Function
2
OS function is used.
, 11 ), the A/D conversion is begun.
B B
2
OS
",
B