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CHAPTER 8 16-bit reload timer
Table 8.3-3 Timer Control Status Registers (Low) (TMCSR0: L, TMCSR1: L)
bit0
bit1
bit2
bi3
bit4
bit5
bit6
258
bit name
TRG:
This bit starts the 16-bit reload timer by software.
Software trigger bit
The software trigger function works only when the timer
operation is enabled (CNTE = 1).
When set to "0": Disabled.The state remains unchanged.
When set to "1": Reloads value set in 16-bit reload register
(TMRLR) to 16-bit timer register (TMR), starting TMR
count operation"1".
Read: 0 is always read.
CNTE:
This bit enables or disables the operation of the 16-bit reload
Timer operation enable
timer.
bit
When set to "1": 16-bit reload timer enters start trigger wait
state.When the start trigger is input, the timer register restarts
count operation.
When set to "0": Stops count operation
UF:
This bit indicates that the TMR underflows.
Underflow generation
When set to "0": The bit is cleared.
flag bit
When the bit is set to "1": No effect.
Read by read modify write instructions: 1 read
INTE:
This bit enables or disables an under flow interrupt.
Underflow interrupt
When an underflow occurs (TMCSR: UF = 1) with an
enable bit
underflow interrupt enabled (TMCSR: INTE = 1), an interrupt
request is generated.
RELD:
This bit sets the reload operation at underflow.
Reload select bit
When set to "1": At underflow, reloads value set in TMRLR
to TMR, continuing count operation (reload mode)
When set to "0": At underflow, stops count operation (one-
shot mode)
OUTL:
This bit sets the output level of the output pin of the 16-bit
TOT Pin output level
reload timer.
select bit
<One-shot mode (RELD = 0)>
When set to "0": Outputs High-level rectangular wave
during TMR count operation
When set to "1": Outputs Low-level rectangular wave
during TMR count operation
<Reload mode (RELD = 1)>
When set to "0": Outputs Low-level toggle wave when
reload timer started
When set to "1": Outputs High-level toggle wave when 16-
bit reload timer started
OUTE:
This bit sets the function of the TOT pin of the 16-bit reload
TOT Output enable bit
timer.
When set to "0": Functions as general-purpose I/O port
When set to "1": Functions TOT as pin of 16-bit reload
timer
Function
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