Panasonic MN101C77C User Manual

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Chapter 8    Time Base Timer / 8-bit Free-running Timer

8-bit Free-running Timer

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8-bit Free-running Timer (Timer 6)

The generation cycle of the timer interrupt is set by the clock source selection and the setting value of the

compare register (TM6OC), in advance. If the binary counter (TM6BC) reaches the setting value of the

compare register, an interrupt is generated at the next count clock, then the binary counter is cleared and

counting is restarted from x'00'.

Table 8-3-1 shows clock source that can be selected.

Clock source

1count time

fosc

50 ns

fx

30.5 µs

fs

100 ns

fosc X 1/2

12

204.8 µs

fosc X 1/2

13

409.6 µs

fx X 1/2

12

125 ms

fx X 1/2

13

250 ms

Notes : as

fosc = 20(MHz)
fx = 32.768(kHz)
fs = fosc/2 = 10 MHz

Timer 6 cannot stop its timer counting except at stanby mode (STOP mode).