tmp19a61f10xbg TOSHIBA Semiconductor CORPORATION, tmp19a61f10xbg Datasheet - Page 291

• Manufacturer Part Number: tmp19a61f10xbg
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Count clock
(internal clock)
TBxxIN0 pin input
(external trigger pulse)
Match with TBxxRG0H/L
Match with TBxxRG1H/L
Timer output TBxxOUT pin
11.4.4
Applications using the Capture Function
below:
The capture function can be used to develop many applications, including those described
One-shot pulse output triggered by an external pulse
One-shot pulse output triggered by an external pulse is carried out as follows:
The 16-bit up-counter UC0 is made to count up by putting it in a free-running state
using the prescaler output clock. An external pulse is input through the TBxxIN0 pin.
A trigger is generated at the rising of the external pulse by using the capture function
and the value of the up-counter is taken into the capture registers (TBxxCP0H/L).
The INTC must be programmed so that an interrupt INTx is generated at the rising of
an external trigger pulse.
(TBxxRG0H/L) to the sum of the TBxxCP0H/L value (c) and the delay time (d), (c + d),
and set the timer registers (TBxxRG1H/L) to the sum of the TBxxRG0H/L values and
the pulse width (p) of one-shot pulse, (c + d + p).
In addition, the timer flip-flop control registers (TBxxFFCR<TBxxE1T1, TBxxE0T1>)
must be set to “11.” This enables triggering the timer flip-flop (TB5FF0) to reverse
when UC5 matches TBxxRG0H/L and TB0RG1H/L. This trigger is disabled by the
INTTBxx interrupt after a one-shot pulse is output.
Symbols (c), (d) and (p) used in the text correspond to symbols c, d and p in Fig.
11.4.4.1.
Fig. 11.4.4.1 One-shot Pulse Output (With Delay)
Time difference measurement
One-shot pulse output triggered by an external pulse
Frequency measurement
Pulse width measurement
c
Put the counter in a free running state.
Disable reverse when
TMP19A61 (rev 1.0)11-290
Taking data into capture register 1 (CAP1).
INT5 generation
data is taken from
Delay time
Enable
reverse
CAP1
(d)
This interrupt is used to set the timer registers
c + d
Enable
reverse
INTTBxx generation
Pulse width
(p)
c + d + p
INTTBxx generation
TMP19A61