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7702 Datasheet(PDF) 134 Page - Renesas Technology Corp

Part # 7702
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  217 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7702 Datasheet(HTML) 134 Page - Renesas Technology Corp

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TIMER A
7702/7703 Group User’s Manual
5–46
5.6 Pulse width modulation (PWM) mode
Fig. 5.6.6 Operation example of 8-bit pulse width modulator
Œ Count source
TAiIN pin’s
input signal
1 / fi ! (m+1) ! (28 –1)
PWM pulse output
from TAiOUT pin
Note: The above applies when the reload register’s high-order 8 bits (n) = “0216”
and low-order 8 bits (m) = “0216” and an external trigger (falling of TAiIN pin input
signal) is selected.
“H”
“H”
“H”
“L”
“L”
“L”
“1”
“0”
Timer Ai interrupt
request bit
Cleared to “0” when interrupt request is accepted or cleared by software.
fi: Frequency of count source
(f2, f16, f64, or f512)
Œ The 8-bit prescaler counts the count source.
 The 8-bit pulse width modulator counts the 8-bit prescaler’s underflow signal.
 8-bit prescaler’s
underflow signal
1 / fi ! (m+1) ! (n)
1 / fi ! (m+1)



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