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PIC18F4680ISPQTP bảng dữ liệu(PDF) 181 Page - Microchip Technology

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Giải thích chi tiết về linh kiện  28/40/44-Pin Enhanced Flash Microcontrollers with ECAN??Technology, 10-Bit A/D and nanoWatt Technology
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
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© 2007 Microchip Technology Inc.
Preliminary
DS39625C-page 179
PIC18F2585/2680/4585/4680
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
PORTD<4>,
PORTD<5>,
PORTD<6>
and
PORTD<7> data latches. The TRISD<4>, TRISD<5>,
TRISD<6> and TRISD<7> bits must be cleared to
make the P1A, P1B, P1C and P1D pins outputs.
FIGURE 16-6:
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.



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