PIC18F25K80 MICROCHIP [Microchip Technology], PIC18F25K80 Datasheet - Page 234

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PIC18F25K80

Manufacturer Part Number
PIC18F25K80
Description
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet

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PIC18F66K80 FAMILY
16.5
Timer3 can be configured to count freely or the count
can be enabled and disabled using the Timer3 gate
circuitry. This is also referred to as the Timer3 gate
count enable.
The Timer3 gate can also be driven by multiple
selectable sources.
16.5.1
The Timer3 Gate Enable mode is enabled by setting
the TMR3GE bit (TxGCON<7>). The polarity of the
Timer3 Gate Enable mode is configured using the
T3GPOL bit (T3GCON<6>).
When Timer3 Gate Enable mode is enabled, Timer3 will
increment on the rising edge of the Timer3 clock source.
When Timer3 Gate Enable mode is disabled, no incre-
menting will occur and Timer3 will hold the current count.
See
FIGURE 16-2:
DS39977C-page 234
Figure 16-2
Timer3
TMR3GE
T3GPOL
Timer3 Gates
T3GVAL
T3G_IN
T3CKI
TIMER3 GATE COUNT ENABLE
for timing details.
TIMER3 GATE COUNT ENABLE MODE
N
Preliminary
N + 1
TABLE 16-1:
† The clock on which TMR3 is running. For more
T3CLK
information, see T3CLK in
(†)
N + 2
(T3GCON<6>)
T3GPOL
TIMER3 GATE ENABLE
SELECTIONS
0
0
1
1
 2011 Microchip Technology Inc.
T3G Pin
N + 3
Figure
0
1
0
1
16-1.
Counts
Holds Count
Holds Count
Counts
N + 4
Operation
Timer3

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