Datasheet

PIC16C712/716
DS41106C-page 44  1999-2013 Microchip Technology Inc.
7.4 CCP1 Module and PORTB
Operation
When the CCP module is disabled, PORTB<3>
operates as a normal I/O pin. When the CCP module
is enabled, PORTB<3> operation is affected.
Multiplexing details of the CCP1 module are shown on
PORTB<3>, refer to Figure 3.6.
Table 7-5 below shows the effects of the CCP module
operation on PORTB<3>
.
TABLE 7-5: CCP1 MODULE AND PORTB OPERATION
CCP1
Module
Mode
Control Bits CCP1 Module Operation PORTB<3> Operation
Off CCP1CON = --xx 0000 Off PORTB<3> functions as normal I/O.
Capture CCP1CON = --xx 01xx
TRISCCP = ---- -1-x
The CCP1 module will capture an event
on the RB3/CCP1 pin which is driven by
an external circuit. The DCCP bit can
read the signal on the RB3/CCP1 pin.
PORTB<3> always reads ‘0’ when
configured as input. If PORTB<3> is
configured as output, reading
PORTB<3> will read the data latch.
Writing to PORTB<3> will always
store the result in the data latch, but it
does not drive the RB3/CCP1 pin.
CCP1CON = --xx 01xx
TRISCCP = ---- -0-x
The CCP1 module will capture an event
on the RB3/CCP1 pin which is driven by
the DCCP bit. The DCCP bit can read
the signal on the RB3/CCP1 pin.
Compare CCP1CON = --xx 10xx
TRISCCP = ---- -0-x
The CCP1 module produces an output
on the RB3/CCP1 pin when a compare
event occurs. The DCCP bit can read
the signal on the RB3/CCP1 pin.
PWM CCP1CON = --xx 11xx
TRISCCP = ---- -0-x
The CCP1 module produces the PWM
signal on the RB3/CCP1 pin. The
DCCP bit can read the signal on the
RB3/CCP1 pin.