pic32mx320f064h Microchip Technology Inc., pic32mx320f064h Datasheet - Page 295

• Manufacturer Part Number: pic32mx320f064h
• Description: 64/100-pin General Purpose, 32-bit Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

15.0
The input capture module is useful in applications
requiring frequency (period) and pulse measurement.
The PIC32MX Family devices support up to five input
capture channels.
The input capture module captures the 16-bit or 32-bit
value of the selected Time Base registers when an
event occurs at the ICx pin. The events that cause a
capture event are listed below in three categories:
1.
2.
3.
FIGURE 15-1:
© 2007 Microchip Technology Inc.
Note:
Simple Capture Event modes
- Capture timer value on every falling edge of
- Capture timer value on every rising edge of
Capture timer value on every edge (rising and
falling)
Capture timer value on every edge (rising and
falling), specified edge first.
input at ICx pin
input at ICx pin
INPUT CAPTURE
Reference Manual” (DS61132) for a
This data sheet summarizes the features of
the PIC32MX family of devices. It is not
intended to be a comprehensive reference
source. Refer to the “PIC32MX Family
detailed description of this peripheral.
ICxM<2:0>
Prescaler
1, 4, 16
IC x Input
INPUT CAPTURE BLOCK DIAGRAM
ICxFEDGE
ICxM<2:0>
Edge Detect
ICxCON
Advance Information
FIF O Control
ICxI< 1:0>
ICxBNE
ICxOV
ICxTMR
ICxC32
Generation
Interrupt
Interrupt
Event
4.
Each input capture channel can select between one of
two 16-bit timers (Timer2 or Timer3) for the time base,
or two 16-bit timers (Timer2 and Timer3) together to
form a 32-bit timer. The selected timer can use either
an internal or external clock.
Other operational features include:
• Device wake-up from capture pin during CPU
• Interrupt on input capture event
• 4-word FIFO buffer for capture values
• Input capture can also be used to provide
ICxBUF <31:16>
Sleep and Idle modes
- Interrupt optionally generated after 1, 2, 3 or
additional sources of external interrupts
-Capture timer value on every 4th rising edge
- Capture timer value on every 16th rising
Prescaler Capture Event modes
4 buffer locations are filled
of input at ICx pin
edge of input at ICx pin
PIC32MX FAMILY
Data Space Interface
Peripheral Data Bus
ICxBUF<15:0>
Timer3
0
T imer2
1
DS61143A-page 293