Panasonic F77G User Manual page 489

Setup Procedure
(7) Enable the interrupt.
ADICR (x'3FFA')
bp1 : ADIE = 1
(8) Set the A/D ladder resistance.
ANCTR0 (x'3FB0')
bp3 : ANLADE = 1
(9) Select the A/D converter activation
factor.
ANCTR2 (x'3FB2')
bp6 : ANSTSEL = 1
(10) Start the A/D conversion.
ANCTR2 (x'3FB2')
bp7 : ANST = 1
(11) Complete the A/D conversion.
Note : The above (3) to (4) can be set at once.
Even if the external interrupt 3 is generated during A/D conversion, the A/D converter is
operated in normal. Also, once the A/D conversion is finished, it is never started again.
Description
(7) Enable the interrupt by setting the ADIE flag of
the ADICR register to "1".
(8) Set the ANLADE flag of the A/D converter
control register 0 (ANCTR0) to "1" to send a
current to the ladder resistance for the A/D
conversion.
(9) Set the ANSTSEL flag of the A/D converter
control register 2 (ANCTR2) to "1", and select
"writing to the ANST flag of the A/D converter
control register 3 (ANCTR3), the external
interrupt 3"as the A/D converter activation
factor.
(10) When the external interrupt 3, set in (5) is
generated, the ANST flag of the A/D converter
control register 2 (ANCTR2) is set to "1" to start
the A/D conversion. And even if the external
interrupt 3 is not generated, the A/D conversion
is started by setting the ANST flag of the A/D
converter control register 2 (ANCTR2) to "1".
(11) When the A/D conversion is finished, the A/D
conversion complete interrupt is generated,
and the ANST flag of the A/D converter control
register 2 (ANCTR2) is cleared to "0".
The result of the conversion is stored to the A/D
converter buffer (ANBUF0, 1).
Chapter 15 A/D Converter
XV - 15
Operation