Fujitsu F2MC-16LX Hardware Manual page 166

CHAPTER 8 TIME-BASED TIMER
These bits are initialized to "00" by reset and are readable and writable.
Table 8.2-1 Interval times and number of cycles for TBC1 and TBC0
TBC1
0
0
1
1
150
Interval time for oscillation
TBC0
4MHz
0 1.024 ms
1 4.096 ms
0 16.384 ms
1 131.072 ms
Number of oscillation clock
(oscillation) cycles
12
2
14
2
16
2
19
2