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38C3 Datasheet(PDF) 138 Page - Renesas Technology Corp

Part # 38C3
Description  8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  224 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

38C3 Datasheet(HTML) 138 Page - Renesas Technology Corp

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38C3 Group User’s Manual
APPLICATION
2-73
2.8 Clock generating circuit
Fig. 2.8.3 Status transition diagram during power failure
XIN
XCIN
Internal
system clock
Change internal system
clock to high-speed
mode
After detecting, change internal system clock to
low-speed mode and stop oscillating XIN-XOUT
Middle-speed
mode
High-speed mode
Low-speed mode
XCIN-XCOUT oscillation function selected
Reset released
Power failure detected
Figure 2.8.3 shows the status transition diagram during power failure and Figure 2.8.4 shows the
setting of relevant registers.



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