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8.8.2 Single sweep mode operation description
(1) When an internal trigger is selected
The A-D converter starts conversion for the input voltage from the AN
conversion start bit is set to "1."
The A-D conversion of the input voltage from the AN
the 8-bit mode, or 59 cycles of φ
approximation register (conversion result) are transferred to the A-D register 0.
The operation to all selected analog input pins is performed.
The conversion result is transferred to the A-D register i each time each pin is converted.
When the step
The A-D conversion start bit is cleared to "0" and the A-D converter stops operation.
(2) When an external trigger is selected
The A-D converter starts conversion for the input voltage from the AN
______
the
pin changes from "H" to "L" while the A-D conversion start bit is "1."
AD
TRG
The A-D conversion of the input voltage from the AN
the 8-bit mode, or 59 cycles of φ
approximation register (conversion result) are transferred to the A-D register 0.
The operation to all selected analog input pins is performed.
The conversion result is transferred to the A-D register i each time each pin is converted.
When the step
The A-D conversion stops operation.
The A-D conversion start bit remains set to "1" after the operation is completed. Accordingly, the
operation of the A-D converter can be performed again from step
pin changes from "H" to "L."
When the level of the
is cancelled and is restarted from step
Figure 8.8.2 shows the conversion operation in the single sweep mode.
in the 10-bit mode. Then, the contents of the successive
AD
is completed, the A-D conversion interrupt request bit is set to "1."
in the 10-bit mode. Then, the contents of the successive
AD
is completed, the A-D conversion interrupt request bit is set to "1."
______
pin changes from "H" to "L" during operation, the operation at that point
AD
TRG
7751 Group User's Manual
A-D CONVERTER
pin is completed after 49 cycles of φ
0
pin is completed after 49 cycles of φ
0
.
8.8 Single sweep mode
pin starts when the A-D
0
pin when the input level to
0
when the level of the
in
AD
in
AD
______
AD
TRG
8–25
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