PIC18LF4580ISOSQTP 查看數據表（PDF） - Microchip Technology

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PIC18LF4580ISOSQTP

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

Microchip Technology 

PIC18F2480/2580/4480/4580

FIGURE 17-2:

PWM OUTPUT RELATIONSHIPS (ACTIVE-HIGH STATE)

ECCP1CON

<7:6>

SIGNAL

0

Duty

Cycle

Period

00 (Single Output)

10 (Half-Bridge)

(Full-Bridge,

01 Forward)

(Full-Bridge,

11

Reverse)

P1A Modulated

P1A Modulated

P1B Modulated

P1A Active

P1B Inactive

P1C Inactive

P1D Modulated

P1A Inactive

P1B Modulated

P1C Active

P1D Inactive

Delay(1)

Delay(1)

PR2 + 1

FIGURE 17-3:

PWM OUTPUT RELATIONSHIPS (ACTIVE-LOW STATE)

ECCP1CON

<7:6>

SIGNAL

0

Duty

Cycle

Period

PR2 + 1

00 (Single Output)

10 (Half-Bridge)

P1A Modulated

P1A Modulated

P1B Modulated

P1A Active

Delay(1)

Delay(1)

(Full-Bridge,

01 Forward)

P1B Inactive

P1C Inactive

(Full-Bridge,

11

Reverse)

P1D Modulated

P1A Inactive

P1B Modulated

P1C Active

P1D Inactive

Relationships:

• Period = 4 * TOSC * (PR2 + 1) * (TMR2 Prescale Value)

• Duty Cycle = TOSC * (ECCPR1L<7:0>:ECCP1CON<5:4>) * (TMR2 Prescale Value)

• Delay = 4 * TOSC * (ECCP1DEL<6:0>)

Note 1: Dead-band delay is programmed using the ECCP1DEL register (Section 17.4.6 “Programmable Dead-Band Delay”).

© 2009 Microchip Technology Inc.

DS39637D-page 181

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