PIC18F4321 Datasheet, PDF (153/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F4321 FAMILY
FIGURE 16-2:
PWM OUTPUT RELATIONSHIPS (ACTIVE-HIGH STATE)
CCP1CON
<7:6>
SIGNAL
0
Duty
Cycle
Period
00 (Single Output)
P1A Modulated
P1A Modulated
Delay⁽¹⁾
Delay⁽¹⁾
10 (Half-Bridge)
P1B Modulated
P1A Active
(Full-Bridge,
01 _Forward)
P1B Inactive
P1C Inactive
P1D Modulated
P1A Inactive
(Full-Bridge,
11
Reverse)
P1B Modulated
P1C Active
P1D Inactive
PR2 + 1
FIGURE 16-3:
PWM OUTPUT RELATIONSHIPS (ACTIVE-LOW STATE)
CCP1CON
<7:6>
SIGNAL
0
Duty
Cycle
Period
PR2 + 1
00 (Single Output)
10 (Half-Bridge)
P1A Modulated
P1A Modulated
P1B Modulated
Delay⁽¹⁾
Delay⁽¹⁾
(Full-Bridge,
01 _Forward)
P1A Active
P1B Inactive
P1C Inactive
P1D Modulated
P1A Inactive
(Full-Bridge,
11
Reverse)
P1B Modulated
P1C Active
P1D Inactive
Relationships:
• Period = 4 * TOSC * (PR2 + 1) * (TMR2 Prescale Value)
• Duty Cycle = TOSC * (CCPR1L<7:0>:CCP1CON<5:4>) * (TMR2 Prescale Value)
• Delay = 4 * TOSC * (ECCP1DEL<6:0>)
Note 1: Dead-band delay is programmed using the ECCP1DEL register (see Section 16.4.6 “Programmable
Dead-Band Delay”).
© 2007 Microchip Technology Inc.
Preliminary
DS39689E-page 151