Fujitsu FR81S User Manual
CHAPTER 21: 32-BIT FREE-RUN TIMER
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: 32-BIT FREE-RUN TIMER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
30
5.1.4. Each Clear Operations of the Free-run Timer
This section shows each clear operations of the free-run timer.
Clearing of the free-run timer (4 types)
(1) When it has been reset
(2) When "1" is written to SCLR: bit4 of the TCCSL register while it is in operation
(3) When there is a match with the compare clear register
(4) When "0000_0000
H
" is written to the TCDT register while it is in stop
Reset
Clear
Count of
free-run
timer
Time
Clearing by software
or compare match
Enable/disable
operation
(software)
Peripheral
clock (CLKP)
Count timing
(Internal clock)
N
-
1
N
Compare match
Clearing free-run timer
Interrupt request
Timing of clearing by compare match
(1)
(2)
(3)
(4)
Operation stop
Operation
stop
00000000
H
“00000000
H
” Write
N
-
1
N
“00000000”
“00000001”
Compare value=N
Count value
Compare value
(1)
(2)
(3)
(4)
MB91520 Series
MN705-00010-1v0-E
825