Fujitsu MB90480 Series Hardware Manual page 403

● Method to enable analog pin input
Set by the analog input enable register (ADER)
Operation
To input AN0 pin
To input AN1 pin
To input AN2 pin
To input AN3 pin
To input AN4 pin
To input AN5 pin
To input AN6 pin
To input AN7 pin
● Method to select start of A/D converter
The following three start triggers are provided.
• Software trigger
• Rising signal of reload timer
• Falling signal of external trigger input
The start trigger is set by the start source select bits (ADCS2.STS[1:0]).
To specify external trigger/software trigger
To specify reload timer/software trigger
To specify external trigger/reload timer/software trigger
The A/D converter starts with the first source among the selected sources.
● Method to start A/D converter
• Method to generate software trigger
The software trigger is set by the A/D conversion software trigger bit (ADCS2.STRT).
To generate software trigger
• Method to start by reload timer 0, reload timer 1
It is necessary to set and start the reload timer. For details, see "CHAPTER 14 16-BIT
RELOAD TIMER".
Control bit
(ADER.ADE0)
(ADER.ADE1)
(ADER.ADE2)
(ADER.ADE3)
(ADER.ADE4)
(ADER.ADE5)
(ADER.ADE6)
(ADER.ADE7)
A/D start source
To specify software trigger
Operation
CHAPTER 17 8/10-BIT A/D CONVERTER
.
Start source select bits (STS[1:0])
A/D conversion software trigger bit (STRT)
Write "1"
Setting
Set to "1"
Set to "1"
Set to "1"
Set to "1"
Set to "1"
Set to "1"
Set to "1"
Set to "1"
Set to "00 "
B
Set to "01 "
B
Set to "10 "
B
Set to "11 "
B
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