Panasonic MN101C77C - Manual (Page 239)

VI - 25
Chapter 6 8-bit Timers
8-bit Timer Pulse Output
TM0BC counts up from x'00'. If TM0BC reaches the setting value of the TM0OC register, then
TM0BC is cleared to x'00', TM0IO output signal is inverted and TM0BC restarts to count up from
x'00'.
At TMnOC = x'00', timer pulse output has the same waveform to at x'01'.
If any data is written to compare register binary counter is stopped, timer output is reset to
"L".
Set the compare register value as follows.
The compare register value = - 1
The timer pulse output cycle
The count clock cycle x 2