MC908MR16CFUE Datasheet, PDF (124/282 Pages) Freescale Semiconductor, Inc – On-chip programming firmware for use with host personal computer, Clock generator module (CGM)

Pulse-Width Modulator for Motor Control (PWMMC)
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
UP/DOWN
COUNTER
LDOK = 1
MODULUS = 3
PWM VALUE = 1
PWMF SET
LDOK = 0
MODULUS = 3
PWM VALUE = 2
PWMF SET
LDOK = 1
MODULUS = 3
PWM VALUE = 2
PWMF SET
LDOK = 0
MODULUS = 3
PWM VALUE = 1
PWMF SET
PWM
Figure 12-8. Center-Aligned PWM Value Loading
UP/DOWN
COUNTER
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
LDOK = 1
MODULUS = 2
PWM VALUE = 1
PWMF SET
LDOK = 1
MODULUS = 3
PWM VALUE = 1
PWMF SET
LDOK = 1
LDOK = 1
LDOK = 0
MODULUS = 2 MODULUS = 1 MODULUS = 2
PWMVALUE = 1 PWM VALUE = 1 PWM VALUE = 1
PWMF SET
PWMF SET
PWMF SET
PWM
Figure 12-9. Center-Aligned Loading of Modulus
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
UP-ONLY
COUNTER
LDOK = 1
MODULUS = 3
PWM VALUE = 1
PWMF SET
LDOK = 0
MODULUS = 3
PWM VALUE = 2
PWMF SET
LDOK = 1
LDOK = 0
MODULUS = 3 _{MODULUS = 3}
PWM VALUE = 2 _{PWM VALUE = 1}
PWMF SET
PWMF SET
LDOK = 0
MODULUS = 3
PWM VALUE = 1
PWMF SET
PWM
Figure 12-10. Edge-Aligned PWM Value Loading
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
124
Freescale Semiconductor