User guide

SmartBook for Renesas R8C/Tiny Microcontrollers

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For the hardware trigger signal, the polarity can also be selected either as rising

or falling edge. Timer ignores any other trigger signals till it finishes the counting

down operation.

7.9 Programmable Wait One Shot Generation Mode:

This is similar to other one shot mode with a difference. In this mode, a delay can

be introduced before generating the target one shot pulse after the active trigger

signal.

Taking the Timer Z as reference, the delay can be set in the TZPR register and the

one shot active level is defined in the TZSC register.

When the Timer Z is configured for this mode, it introduces a delay that is defined

in the TZPR register before generating the required one shot pulse set by the

TZSC register at the output pin.

7.10 Input Capture Mode:

This mode is quite interesting one that enables the designers find out the pres-

ence of active input signal using the timer functions of the R8C/Tiny. The counter

arrangement is relatively more complicated than other timers for the obvious rea-

sons. Only 16 bit registers can handle this task.

When the selected timer is configured for this mode,

the timer starts counting from zero using the de-

fined internal clock signal. The input signal

under the question is applied to the respec-

tive input of the timer. The rising edge,

the falling edge, or both the edges can

capture the value of the timer when

counting up.

More information about this mode

is given here taking the Timer C as

reference. The same facilities are

also available in other timers:

Timer RC, Timer RD and Timer RF.

In program-

mable wait one shot

generation mode, a delay can

be introduced before generating

the target one shot pulse after the ac-

tive trigger signal. Input capture mode

enables the designers find out the presence

of active input signal using the timer functions

of the R8C/Tiny. The input

signal is applied to the respec-

tive input of the timer. The ris-

ing edge, the falling edge, or both

the edges can capture the value

of the timer when counting up.