MC68HC908MR8 Datasheet, PDF (151/372 Pages) Motorola, Inc – Microcontrollers

UP/DOWN
COUNTER
Pulse-Width Modulator for Motor Control (PWMMC)
PWM Generators
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
LDOK = 1
MODULUS = 2
PWM VALUE = 1
PWMF SET
PWM
LDOK = 1
MODULUS = 3
PWM VALUE= 1
PWMF SET
LDOK = 1
MODULUS = 2
PWMVALUE= 1
PWMF SET
LDOK = 1
LDOK = 0
MODULUS = 1 MODULUS = 2
PWM VALUE= 1 PWM VALUE= 1
PWMF SET PWMF SET
Figure 9-8. Center-Aligned Loading of Modulus
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
UP-ONLY
COUNTER
LDOK = 1
LDOK = 0
LDOK = 1
LDOK = 0
LDOK = 0
MODULUS = 3 MODULUS = 3 MODULUS = 3 MODULUS = 3 MODULUS = 3
PWM VALUE= 1. PWM VALUE= 2. PWM VALUE = 2 PWM VALUE = 1 PWM VALUE = 1
PWMF SET PWMF SET _{PWMF SET} PWMF SET PWMF SET
PWM
Figure 9-9. Edge-Aligned PWM Value Loading
LDFQ1:LDFQ0 = 00 (RELOAD EVERY CYCLE)
UP-ONLY
COUNTER
LDOK = 1
MODULUS = 3
PWM VALUE= 2
PWMF SET
LDOK = 1
MODULUS = 4
PWM VALUE = 2
PWMF SET
LDOK = 1
LDOK = 0
MODULUS = 2 MODULUS = 1
PWM VALUE = 2 PWM VALUE= 2
PWMF SET
PWMF SET
PWM
Figure 9-10. Edge-Aligned Modulus Loading
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor Pulse-Width Modulator for Motor Control (PWMMC)
Technical Data
151