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H8/3021 Datasheet(PDF) 269 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 269 Page - Renesas Technology Corp

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8. 16-Bit Integrated Timer Unit (ITU)
Rev.2.00 Mar. 22, 2007 Page 245 of 684
REJ09B0352-0200
Example of Reset-Synchronized PWM Mode: Figure 8.32 shows an example of operation in
reset-synchronized PWM mode. TCNT3 operates as an up-counter in this mode. TCNT4 operates
independently, detached from GRA4 and GRB4. When TCNT3 matches GRA3, TCNT3 is cleared
and resumes counting from H'0000. The PWM outputs toggle at compare match with GRB3,
GRA4, GRB4, and TCNT3 respectively, and when the counter is cleared.
TCNT3 value
Counter cleared at compare match with GRA3
Time
GRA3
GRB3
GRA4
GRB4
H'0000
TIOCA3
TIOCB3
TIOCA4
TOCXA4
TIOCB4
TOCXB4
Figure 8.32 Operation in Reset-Synchronized PWM Mode (Example)
(when OLS3 = OLS4 = 1)
For the settings and operation when reset-synchronized PWM mode and buffer mode are both
selected, see section 8.4.8, Buffering.



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