NXP Semiconductors MPC5566 - Page 746

Enhanced Modular Input/Output Subsystem (eMIOS)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 17-67
Figure 17-50 shows two cycles of a center-aligned PWM signal. Both A1 and B1 register values are
changing within the same cycle, which allows the duty cycle and dead time values to be changed at
simultaneously.
Figure 17-50. eMIOS PWMCB Mode Example — Lead Dead Time Insertion
EDPOL = 1
Internal
Internal counter is
Dead-time
A1 Value
A2 Value
B1 Value
B2 Value
Selected
0x000002 0x000004
0x000002 0x000004
0x000015
0x000015
0x000013
0x000013
0x000001
0x000002
0x000004
0x000015
0x000013
0x000020
Output flip-flop
FLAG set event
0x000001
counter bus
Time
Time
Time Base
Dead-time
set to 1 on A1 match
Write to B2
Write to A2