Microchip Technology AC244045 Data Sheet
PIC16(L)F1825/1829
DS41440C-page 152
2010-2012 Microchip Technology Inc.
16.1.5
INTERRUPTS
The ADC module allows for the ability to generate an
interrupt upon completion of an Analog-to-Digital
conversion. The ADC Interrupt Flag is the ADIF bit in
the PIR1 register. The ADC Interrupt Enable is the
ADIE bit in the PIE1 register. The ADIF bit must be
cleared in software.
interrupt upon completion of an Analog-to-Digital
conversion. The ADC Interrupt Flag is the ADIF bit in
the PIR1 register. The ADC Interrupt Enable is the
ADIE bit in the PIE1 register. The ADIF bit must be
cleared in software.
This interrupt can be generated while the device is
operating or while in Sleep. If the device is in Sleep, the
interrupt will wake-up the device. Upon waking from
Sleep, the next instruction following the SLEEP instruc-
tion is always executed. If the user is attempting to
wake-up from Sleep and resume in-line code execution,
the GIE and PEIE bits of the INTCON register must be
disabled. If the GIE and PEIE bits of the INTCON
register are enabled, execution will switch to the
Interrupt Service Routine.
operating or while in Sleep. If the device is in Sleep, the
interrupt will wake-up the device. Upon waking from
Sleep, the next instruction following the SLEEP instruc-
tion is always executed. If the user is attempting to
wake-up from Sleep and resume in-line code execution,
the GIE and PEIE bits of the INTCON register must be
disabled. If the GIE and PEIE bits of the INTCON
register are enabled, execution will switch to the
Interrupt Service Routine.
16.1.6
RESULT FORMATTING
The 10-bit A/D conversion result can be supplied in two
formats, left justified or right justified. The ADFM bit of
the ADCON1 register controls the output format.
formats, left justified or right justified. The ADFM bit of
the ADCON1 register controls the output format.
shows the two output formats.
FIGURE 16-3:
10-BIT A/D CONVERSION RESULT FORMAT
Note 1:
The ADIF bit is set at the completion of
every conversion, regardless of whether
or not the ADC interrupt is enabled.
every conversion, regardless of whether
or not the ADC interrupt is enabled.
2:
The ADC operates during Sleep only
when the F
when the F
RC
oscillator is selected.
ADRESH
ADRESL
(ADFM = 0)
MSB
LSB
bit 7
bit 0
bit 7
bit 0
10-bit A/D Result
Unimplemented: Read as ‘0’
(ADFM = 1)
MSB
LSB
bit 7
bit 0
bit 7
bit 0
Unimplemented: Read as ‘0’
10-bit A/D Result