PIC16F707 Datasheet, PDF (81/284 Pages) Microchip Technology – 40/44-Pin, Flash Microcontrollers with nanoWatt XLP and mTouch™ Technology

PIC16F707/PIC16LF707
FIGURE 9-2:
ANALOG-TO-DIGITAL CONVERSION TAD CYCLES
Tcy to TAD
TAD0
TAD1 TAD2 TAD3 TAD4
TAD5 TAD6 TAD7
TAD8
TAD9
b7
b6
b5
b4
b3
b2
b1
b0
Conversion Starts
Holding capacitor is disconnected from analog input (typically 100 ns)
Set GO/DONE bit
ADRES register is loaded,
GO/DONE bit is cleared,
ADIF bit is set,
Holding capacitor is connected to analog input
9.1.5
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.
Note 1: The ADIF bit is set at the completion of
every conversion, regardless of whether
or not the ADC interrupt is enabled.
2: The ADC operates during Sleep only
when the FRC oscillator is selected.
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 execu-
tion, 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.
Please refer to Section 9.1.5 “Interrupts” for more
information.
 2010 Microchip Technology Inc.
Preliminary
DS41418A-page 81