PIC16F684-ESLASHST datasheet(82/164 Pages) MICROCHIP

82 / 164 page

PIC16F684

DS41202C-page 80

Preliminary

 2004 Microchip Technology Inc.

FIGURE 11-4:

PWM OUTPUT RELATIONSHIPS (ACTIVE-HIGH STATE)

FIGURE 11-5:

PWM OUTPUT RELATIONSHIPS (ACTIVE-LOW STATE)

Period

SIGNAL

PR2+1

CCP1CON

<7:6>

P1A MODULATED

P1B MODULATED

P1A ACTIVE

P1B INACTIVE

P1C INACTIVE

P1D MODULATED

P1A INACTIVE

P1B MODULATED

P1C ACTIVE

P1D INACTIVE

Duty

Cycle

(SINGLE OUTPUT)

(Half-bridge)

(Full-bridge,

Forward)

(Full-bridge,

Reverse)

Delay(1)

Relationships:

•

Period = 4 * TOSC * (PR2 + 1) * (TMR2 prescale value)

•

Duty Cycle = TOSC * (CCPR1L<7:0>:CCP1CON<5:4>) * (TMR2 prescale value)

•

Delay = 4 * TOSC * (PWM1CON<6:0>)

Note

Dead band delay is programmed using the PWM1CON register (Section 11.3.6 “Programmable Dead Band Delay”).

Period

SIGNAL

PR2+1

CCP1CON

<7:6>

P1A MODULATED

P1B MODULATED

P1A ACTIVE

P1B INACTIVE

P1C INACTIVE

P1D MODULATED

P1A INACTIVE

P1B MODULATED

P1C ACTIVE

P1D INACTIVE

Duty

Cycle

(SINGLE OUTPUT)

(Half-bridge)

(Full-bridge,

Forward)

(Full-bridge,

Reverse)

Delay(1)

Relationships:

•

Period = 4 * TOSC * (PR2 + 1) * (TMR2 prescale value)

•

Duty Cycle = TOSC * (CCPR1L<7:0>:CCP1CON<5:4>) * (TMR2 prescale value)

•

Delay = 4 * TOSC * (PWM1CON<6:0>)

Note

Dead band delay is programmed using the PWM1CON register (Section 11.3.6 “Programmable Dead Band Delay”).

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