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Chapter 38 Reload Timer
5.Operation
X
X
RX/W
RX/W
(For information on attributes, see
The reload value for the down counter is stored in reload register TMRLR.
Please write using half-word access.
5. Operation
5.1 Internal Clock/Reload Mode
In reload mode, a pulse with a 50% duty ratio is output.
TMRLR
Count clock
Down counter
CNTE bit
Activation trigger
(Soft or external event)
Data load
Underflow
TOT output waveform
OUTL=0
OUTL=1
When RELD=1
(1)
Set reload value to reload register
(2)
Enable reload timer count operation
(3)
TOT pin output
(4)
Generate reload trigger (activation): soft trigger or external event trigger
(5)
Load reload value
(6)
TOT toggle output start
(7)
Counter count down (internal clock synchronous)
(8)
Generate counter underflow
(9)
TOT pin output level reversal (toggle output)
(10)
Reload reload value
(11)
Repeat steps (7) to (10)
(See
"8. Caution (Page
782
X
X
RX/W
RX/W
RX/W
"Meaning of Bit Attribute Symbols (Page
(1)
Reload data
[Reload register setting value + 1]
(5)
Count start
Load
-1
FFFF
(7)
data
(2)
0 (Min)
(4)
T = CLKP
(5)
Toggle output
(3)
(6)
No.794)".)
X
X
X
RX/W
RX/W
Count
(10)
Reload
-1
0000
0000
data
(10)
(8)
(9)
X
Initial Value
RX/W
Attribute
No.10)".)
Reload
-1
data
Repeat
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