PIC18LF45J10T-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF45J10T-I/SP

28/40/44-Pin High-Performance RISC Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F45J10 FAMILY

FIGURE 14-8:

PWM DIRECTION CHANGE

SIGNAL

Period(1)

Period

P1A (Active-High)

P1B (Active-High)

P1C (Active-High)

P1D (Active-High)

DC

DC

(Note 2)

Note 1: The direction bit in the ECCP1 Control register (CCP1CON<7>) is written any time during the PWM cycle.

2: When changing directions, the P1A and P1C signals switch before the end of the current PWM cycle at intervals

of 4 TOSC, 16 TOSC or 64 TOSC, depending on the Timer2 prescaler value. The modulated P1B and P1D signals

are inactive at this time.

FIGURE 14-9:

PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE

Forward Period

t1

Reverse Period

P1A(1)

P1B(1)

P1C(1)

P1D(1)

DC

External Switch C(1)

External Switch D(1)

Potential

Shoot-Through

Current(1)

Note 1: All signals are shown as active-high.

2: tON is the turn-on delay of power switch QC and its driver.

3: tOFF is the turn-off delay of power switch QD and its driver.

DC

tON(2)

tOFF(3)

t = tOFF – tON(2,3)

© 2007 Microchip Technology Inc.

Preliminary

DS39682C-page 139

Share Link: