PIC18LF4420T-I/SO データシートの表示（PDF） - Microchip Technology

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PIC18LF4420T-I/SO

28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2420/2520/4420/4520

16.4.5 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 16-6.

P1A, P1B, P1C and P1D outputs are multiplexed with

the PORTC<2> and PORTD<7:5> data latches. The

TRISC<2> and TRISD<7:5> bits must be cleared to

make the P1A, P1B, P1C and P1D pins outputs.

FIGURE 16-6:

FULL-BRIDGE PWM OUTPUT

Forward Mode

P1A(2)

P1B(2)

Period

Duty Cycle

P1C(2)

P1D(2)

(1)

(1)

Reverse Mode

P1A(2)

Duty Cycle

Period

P1B(2)

P1C(2)

P1D(2)

(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.

 2004 Microchip Technology Inc.

Preliminary

DS39631A-page 153

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