Fujitsu FR81S User Manual
CHAPTER 51: TIMING PROTECTION UNIT
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : TIMING PROTECTION UNIT
FUJITSU SEMICONDUCTOR CONFIDENTIAL
26
5.5. Free-run Function
The section explains the free-run function.
Each timer can set free-run operation. The free-run operation is a function to restart the count automatically
after the timer counts to the interrupt generation factor. In this case, because the counter operation doesn't
stop, it keeps operating as timer operation status (TPUTST.TS[n]) =1.
The free-run function becomes effective if it sets to TPUTCN1n.FRT=1. The free-run function can use both
normal mode/overflow mode.
At the normal mode, the count is restarted from 0. At the overflow mode, the count is restarted from 0 when
TPUTCN1n.PL=0, and the count is restarted after the value of TPUTCN0n.ECPL[23:0] is loaded when
TPUTCN1n.PL=1.
MB91520 Series
MN705-00010-1v0-E
2193