Datasheet

PIC18F66K80 FAMILY
DS39977F-page 272  2010-2012 Microchip Technology Inc.
TABLE 20-2: EXAMPLE PIN ASSIGNMENTS FOR VARIOUS PWM ENHANCED MODES
FIGURE 20-4: EXAMPLE PWM (ENHANCED MODE) OUTPUT RELATIONSHIPS
(ACTIVE-HIGH STATE)
ECCP Mode P1M<1:0> P1A P1B P1C P1D
Single 00 Yes
(1)
Yes
(1)
Yes
(1)
Yes
(1)
Half-Bridge 10 Ye s Yes No No
Full-Bridge, Forward
01 Ye s Yes Ye s Yes
Full-Bridge, Reverse
11 Ye s Yes Ye s Yes
Note 1: Outputs are enabled by pulse steering in Single mode (see Register 20-5).
0
Period
00
10
01
11
Signal
PR2 + 1
P1M<1:0>
P1A Modulated
P1A Modulated
P1B Modulated
P1A Active
P1B Inactive
P1C Inactive
P1D Modulated
P1A Inactive
P1B Modulated
P1C Active
P1D Inactive
Pulse Width
(Single Output)
(Half-Bridge)
(Full-Bridge,
Forward)
(Full-Bridge,
Reverse)
Delay
(1)
Relationships:
• Period = 4 * T
OSC * (PR2 + 1) * (TMR2 Prescale Value)
• Pulse Width = T
OSC * (CCPR1L<7:0>:CCP1CON<5:4>) * (TMR2 Prescale Value)
• Delay = 4 * T
OSC * (ECCP1DEL<6:0>)
Note 1: Dead-band delay is programmed using the ECCP1DEL register (Section 20.4.6 “Programmable Dead-Band
Delay Mode”).
Delay
(1)