Panasonic MN101C77C User Manual

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Chapter 6    8-bit Timers

8-bit Timer Pulse Output

The TMnIO pin can output a pulse signal with any cycle.

„

Operation of Timer Pulse Output (Timers 0, 1, 4 and 5)

The timers can output 2 x cycle signal, compared to the setting value in compare register (TMnOC).

Output pins are as follows ;

Timer 0

Timer 1

Timer 4

Timer 5

Pulse output pin

TM0IO output

( P10, P11 )

TM1IO output

( P76 )

TM4IO output

( P12, P13 )

TM5IO output

( P77 )

„

Count Timing of Timer Pulse Output (Timers 0, 1, 4 and 5)

N

00

01

N-1

N

Count
clock

TMnEN
flag

Compare
register

Binary
counter

Interrupt 
request flag

00

01

00

N-1

N

00

01

N-1

N

TMnIO
output

The TMnIO pin outputs 

2 x cycle, compared to

 the value in the compare register. If the binary

counter reaches the compare register, and the binary counter is cleared to x'00', TMnIO output is

inverted. The inversion of the timer output is changed at the rising edge of the count clock. This is

happened to form waveform inside to correct the output cycle.