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3822 Datasheet(PDF) 115 Page - Renesas Technology Corp

Part # 3822
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  328 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

3822 Datasheet(HTML) 115 Page - Renesas Technology Corp

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2.3 Timer X and timer Y
APPLICATION
3822 GROUP USER’S MANUAL
2–49
Fig. 2.3.9 Pulse width HL continuously measurement mode operation example
Time
H
RL
RL
RL
H
1
1
1
CNTR1 interrupt
request bit
m16
000016
Timer Y stop
control bit
Count
source
P55/CNTR1 pin
CNTR1 active
edge switch bit
n16
Operation example in pulse width HL continuously measurement mode
•RL
•n
•m
Pulse width
Pulse width
H(s) = 1 ÷ count source frequency ! (the Y counter initial value – the Y counter value immediately before reload)
1 : •Clearing by writing “0” to the CNTR1 interrupt request bit.
•Clearing by accepting the CNTR1 interrupt request when the CNTR1 interrupt enable
bit is “1.”
CNTR1 interrupt
enable bit
Timer Y interrupt
request bit
Timer Y interrupt
enable bit
: Reload
: The Y counter initial value
: The Y counter value immediately before reload



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