Panasonic MN101C77C, F77G user manual PWM output shows H , when TM7EN flag is stopped at

Chapter 7 16-bit Timer

„Count Timing of Standard PWM Output (when Compare Register 1 is x'0000')(Timer 7) Here is the count timing at setting x'0000' to the compare register 1.

Count clock

TM7EN flag

Compare

0000

regsiter 1

Binary	0000 0001	N-1 N N+1 N+2	FFFE FFFF 0000 0001	N-1 N N+1
counter

H

TM7IO output

(PWM output)

L

Figure 7-6-2 Count Timing of Standard PWM Output (when Compare Register 1 is x'0000')

PWM output shows "H ", when TM7EN flag is stopped (at "0").

„Count Timing of Standard PWM Output (when Compare Register 1 is x'FFFF')(Timer 7) Here is the count timing at setting x'FFFF' to the compare register 1.

Count clock

TM7EN flag

Compare

FFFF

register 1

Binary	0000 0001	N-1 N N+1 N+2	FFFE FFFF 0000 0001	N-1 N N+1
counter

TM7IO output (PWM output)

Figure 7-6-3 Count Timing of Standard PWM Output (when Compare Register 1 is x'FFFF')

When the standard PWM output is operated, set the TM7BCR flag of the TM7MD2 register to "0" to select the full count over flow as a binary counter clear source and a PWM output setup ("H" output) source.

By setting the T7PWMSL flag of the TM7MD2 register, the TM7OC1 compare match or the TM7OC2 compare match can be selected as a PWM output reset ("L" output) source.

VII - 24 16-bit Standard PWM Output