Datasheet

PIC24FV32KA304 FAMILY
DS39995D-page 282  2011-2013 Microchip Technology Inc.
FIGURE 29-8: TIMER1/2/3/4/5 EXTERNAL CLOCK INPUT TIMING
TABLE 29-27: TIMER1/2/3/4/5 EXTERNAL CLOCK INPUT REQUIREMENTS
FIGURE 29-9: INPUT CAPTURE x TIMINGS
TABLE 29-28: INPUT CAPTURE x REQUIREMENTS
Param.
No.
Symbol Characteristic Min Max Units Conditions
TtH TxCK High Pulse
Time
Sync w/Prescaler T
CY + 20 — ns Must also meet
Parameter Ttp
Async w/Prescaler 10 — ns
Async Counter 20 — ns
TtL TxCK Low Pulse
Time
Sync w/Prescaler T
CY + 20 — ns Must also meet
Parameter Ttp
Async w/Prescaler 10 — ns
Async Counter 20 — ns
TtP TxCK External Input
Period
Sync w/Prescaler 2 * T
CY + 40 — ns N = Prescale Value
(1, 4, 8, 16)
Async w/Prescaler Greater of:
20 or
2 * TCY + 40
N
—ns
Async Counter 40 — ns
Delay for Input Edge
to Timer Increment
Synchronous 1 2 T
CY
Asynchronous — 20 ns
Param.
No.
Symbol Characteristic Min Max Units Conditions
IC10 TccL ICx Input Low Time –
Synchronous Timer
No Prescaler T
CY + 20 — ns Must also meet
Parameter IC15
With Prescaler 20 — ns
IC11 TccH ICx Input Low Time –
Synchronous Timer
No Prescaler T
CY + 20 — ns Must also meet
Parameter IC15
With Prescaler 20 — ns
IC15 TccP ICx Input Period – Synchronous Timer 2 * T
CY + 40
N
— ns N = prescale value
(1, 4, 16)
TxCK Pin
TtL TtH
TtP
ICx Pin
(Input Capture Mode)
IC10 IC11
IC15