Datasheet

page 311
19. Usage Notes
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0020-2020B90JER
)T62/C61M,B62/C61M,A62/C61M(puorGA62/C61M
19.7.2 Timer B
19.7.2.1 Timer B (Timer Mode)
1. The timer remains idle after reset. Set the mode, count source, counter value, etc. using the TBiMR
(i = 0 to 2) register and TBi register before setting the TBiS bit in the TABSR register to “1” (count
starts).
Always make sure the TBiMR register is modified while the TBiS bit remains “0” (count stops)
regardless whether after reset or not.
2. The counter value can be read out at any time by reading the TBi register. However, if this register
is read at the same time the counter is reloaded, the read value is always “FFFF16.” If the TBi
register is read after setting a value in it but before the counter starts counting, the read value is the
one that has been set in the register.
19.7.2.2 Timer B (Event Counter Mode)
1. The timer remains idle after reset. Set the mode, count source, counter value, etc. using the TBiMR
(i = 0 to 2) register and TBi register before setting the TBiS bit in the TABSR register to “1” (count
starts).
Always make sure the TBiMR register is modified while the TBiS bit remains “0” (count stops)
regardless whether after reset or not.
2. The counter value can be read out at any time by reading the TBi register. However, if this register
is read at the same time the counter is reloaded, the read value is always “FFFF16.” If the TBi
register is read after setting a value in it but before the counter starts counting, the read value is the
one that has been set in the register.