m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 139

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

TIMER A
7.5 One-shot pulse mode
Fig. 7.5.5 Example of operation in one-shot pulse mode (selecting external trigger)
7-36
Timer Ai interrupt
One-shot pulse
Count start bit
output from
input signal
Note: The above applies when an external trigger (rising edge of TAi
request bit
TAi
Set to “1” by software.
When the count start bit = “0” (counting stopped), the TAi
When a trigger is generated during counting, the counter counts the count source (n + 1) times after a new trigger is generated.
TAi
OUT
f
n : Reload register’s contents
i
IN
: Frequency of count source
0001
pin
pin
n
16
Starts counting.
(1 / f
7905 Group User’s Manual Rev.1.0
i
)
Reloaded
Cleared to “0” when interrupt request is accepted
or cleared by software.
(n)
OUT
counting.
pin outputs “L” level.
IN
pin’s input signal) is selected.
Starts counting.
Trigger during counting
(1 / f
i
)
(n + 1)
Reloaded
Stops counting.
Time