Microchip Technology MCU PIC PIC18F87K22-I/PTRSL TQFP-80 MCP PIC18F87K22-I/PTRSL Fiche De Données
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Codes de produits
PIC18F87K22-I/PTRSL
2009-2011 Microchip Technology Inc.
DS39960D-page 267
PIC18F87K22 FAMILY
FIGURE 20-5:
EXAMPLE ENHANCED PWM OUTPUT RELATIONSHIPS (ACTIVE-LOW STATE)
0
Period
00
10
01
11
Signal
PR2 + 1
PxM<1:0>
PxA Modulated
PxA Modulated
PxB Modulated
PxA Active
PxB Inactive
PxC Inactive
PxD Modulated
PxA Inactive
PxB Modulated
PxC Active
PxD Inactive
Pulse
Width
Width
(Single Output)
(Half-Bridge)
(Full-Bridge,
Forward)
(Full-Bridge,
Reverse)
Delay
(1)
Delay
(1)
Relationships:
• Period = 4 * T
OSC
* (PR2 + 1) * (TMR2 Prescale Value)
• Pulse Width = T
OSC
* (CCPRxL<7:0>:CCPxCON<5:4>) * (TMR2 Prescale Value)
• Delay = 4 * T
OSC
* (ECCPxDEL<6:0>)
Note
1:
Dead-band delay is programmed using the ECCP1DEL register (see