PIC18F6525/6621/8525/8621
The Single Output mode is the standard PWM mode
discussed in Section 17.4 “Enhanced PWM Mode”.
The Half-Bridge and Full-Bridge Output modes are
covered in detail in the sections that follow.
17.4.3
PWM OUTPUT CONFIGURATIONS
The P1M1:P1M0 bits in the CCP1CON register allow
one of four configurations:
• Single Output
The general relationship of the outputs in all
configurations is summarized in Figure 17-2.
• Half-Bridge Output
• Full-Bridge Output, Forward mode
• Full-Bridge Output, Reverse mode
FIGURE 17-2:
PWM OUTPUT RELATIONSHIPS (ACTIVE-HIGH STATE)
0
PR2 + 1
Duty
SIGNAL
CCP1CON
<7:6>
Cycle
Period
P1A Modulated
P1A Modulated
P1B Modulated
P1A Active
(Single Output)
00
10
Delay
Delay
(Half-Bridge)
P1B Inactive
P1C Inactive
P1D Modulated
P1A Inactive
P1B Modulated
P1C Active
(Full-Bridge,
Forward)
01
(Full-Bridge,
Reverse)
11
P1D Inactive
DS39612B-page 162
2005 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
