Panasonic MN101C77C User Manual

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

VIII - 8

8-bit Free-running Timer

8-bit Free-running Timer as a 1 minute-timer, a 1 second-timer

Table 8-3-2 shows the clock source selection and the TM6OC register setup, when a 8-bit free-running

timer is used as a 1 minute-timer, a 1 second-timer.

Interrupt Generation

Cycle

Clock Source

TM6OC Register

1 min

fx x 1/2

X'EF'

1 s

fx x 1/2

X'07'

fx x 1/2

X'03'

fx = 32.768(kHz)

Table 8-3-2 1 minute-timer, 1 second-timer Setup (Timer 6)

When the 1 minute-timer (1 min.) is set on Table 8-3-2, the bp1 waveform frequency (cycle) of the

TM6BC register is 1 Hz (1 s). So, that can be used for adjusting the seconds.

Figure 8-3-1 Waveform of TM6BC Register bp1 (Timer 6)

1 Hz(1 s)

TM6BC

bp1