mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 138

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Pulse Width Modulator for Motor Control (PWMMC)
Technical Data
138
NOTE:
For ease of software, the LDFQx bits are buffered. When the LDFQx bits
are changed, the reload frequency will not change until the previous
reload cycle is completed. See
When reading the LDFQx bits, the value is the buffered value (for
example, not necessarily the value being acted upon).
PWMINT enables CPU interrupt requests as shown in
this bit is set, CPU interrupt requests are generated when the PWMF bit
is set. When the PWMINT bit is clear, PWM interrupt requests are
inhibited. PWM reloads will still occur at the reload rate, but no interrupt
requests will be generated.
RELOAD
Pulse Width Modulator for Motor Control (PWMMC)
Reload Frequency Bits
RELOAD
CHANGE RELOAD
EVERY 4 CYCLES
FREQUENCY TO
LDFQ1:LDFQ0
Figure 9-5. Reload Frequency Change
Table 9-2. PWM Reload Frequency
00
01
10
11
RELOAD
Figure
CHANGE RELOAD
FREQUENCY TO
EVERY CYCLE
PWM Reload Frequency
9-5.
Every 2 PWM cycles
Every 4 PWM cycles
Every 8 PWM cycles
Every PWM cycle
MC68HC708MP16
RELOAD
Freescale Semiconductor
Figure
RELOAD RELOAD RELOAD
9-6. When
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Rev. 3.1