PIC24FV16KM204 FAMILY
DS33030A-page 242
Advance Information
2013 Microchip Technology Inc.
FIGURE 24-1:
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR
CAPACITANCE MEASUREMENT
24.2
Measuring Time
Time measurements on the pulse width can be similarly
performed using the A/D module’s internal capacitor
(C
AD
) and a precision resistor for current calibration.
displays the external connections used for
time measurements, and how the CTMU and A/D
modules are related in this application. This example
also shows both edge events coming from the external
CTEDx pins, but other configurations using internal
edge sources are possible.
FIGURE 24-2:
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR
TIME MEASUREMENT
PIC24F Device
A/D Converter
CTMU
ANx
C
APP
Output Pulse
EDG1STAT
EDG2STAT
R
PR
ANy
Timer1
Current Source
PIC24F Device
A/D Converter
CTMU
CTED
X
CTED
X
ANx
Output Pulse
EDG1STAT
EDG2STAT
C
AD
R
PR
Current Source
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