Datasheet

PIC18F97J60 FAMILY
DS39762F-page 208  2011 Microchip Technology Inc.
18.4.5 FULL-BRIDGE MODE
In Full-Bridge Output mode, four pins are used as
outputs; however, only two outputs are active at a time.
In the Forward mode, pin, P1A, is continuously active
and pin, P1D, is modulated. In the Reverse mode, pin,
P1C, is continuously active and pin, P1B, is modulated.
These are illustrated in Figure 18-6.
P1A, P1B, P1C and P1D outputs are multiplexed with
the data latches of the port pins listed in Table 18-1 and
Table 18-3. The corresponding TRIS bits must be
cleared to make the P1A, P1B, P1C and P1D pins
outputs.
FIGURE 18-6: FULL-BRIDGE PWM OUTPUT
Period
Duty Cycle
P1A
(2)
P1B
(2)
P1C
(2)
P1D
(2)
Forward Mode
(1)
Period
Duty Cycle
P1A
(2)
P1C
(2)
P1D
(2)
P1B
(2)
Reverse Mode
(1)
(1)
(1)
Note 1: At this time, the TMR2 register is equal to the PR2 register.
Note 2: Output signal is shown as active-high.