PIC18F25K80 MICROCHIP [Microchip Technology], PIC18F25K80 Datasheet - Page 224

• Manufacturer Part Number: PIC18F25K80
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F66K80 FAMILY
14.8.3
When Timer1 Gate Toggle mode is enabled, it is
possible to measure the full cycle length of a Timer1
gate signal, as opposed to the duration of a single level
pulse.
The Timer1 gate source is routed through a flip-flop that
changes state on every incrementing edge of the
signal. (For timing details, see
FIGURE 14-5:
DS39977C-page 224
TMR1GE
T1GPOL
T1GVAL
T1G_IN
T1GTM
Timer1
T1CKI
TIMER1 GATE TOGGLE MODE
N
TIMER1 GATE TOGGLE MODE
Figure
14-5.)
N + 1 N + 2 N + 3
Preliminary
The T1GVAL bit (T1GCON<2>) indicates when the
Toggled mode is active and the timer is counting.
The Timer1 Gate Toggle mode is enabled by setting the
T1GTM bit (T1GCON<5>). When T1GTM is cleared,
the flip-flop is cleared and held clear. This is necessary
in order to control which edge is measured.
N + 4
N + 5 N + 6 N + 7
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N + 8