Panasonic MN101C00 User Manual page 84

Chapter 4 Timer Functions
70
16-bit Timer Operation (timer 4)
Clock
TM4EN
Binary
04 05
counter 4
Figure 4-3-1 Binary Counter 4 (TM4BC) Count Timing
If the TM4EN flag of the TM4MD register is changed simultaneously
with other bits, the switching operation may cause binary counter 4
to be incremented.
If the value of the TM4OCH, TM4OCL register is overwritten while
timer 4 has stopped counting, binary counter 4 will be reset to
X'0000'.
06 07 08
Write to registers
TM4OCH, TM4OCL
09 00