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HD6432138SW Datasheet(PDF) 348 Page - Renesas Technology Corp

Part # HD6432138SW
Description  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1061 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432138SW Datasheet(HTML) 348 Page - Renesas Technology Corp

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Section 11 16-Bit Free-Running Timer
Rev. 4.00 Jun 06, 2006 page 294 of 1004
REJ09B0301-0400
11.3.7
Setting of FRC Overflow Flag (OVF)
The FRC overflow flag (OVF) is set to 1 when FRC overflows (changes from H'FFFF to H'0000).
Figure 11.13 shows the timing of this operation.
H'FFFF
H'0000
Overflow signal
φ
FRC
OVF
Figure 11.13 Setting of Overflow Flag (OVF)
11.3.8
Automatic Addition of OCRA and OCRAR/OCRAF
When the OCRAMS bit in TOCR is set to 1, the contents of OCRAR and OCRAF are
automatically added to OCRA alternately, and when an OCRA compare-match occurs a write to
OCRA is performed. The OCRA write timing is shown in figure 11.14.
OCRAR, F
OCRA
FRC
φ
A
N
N+A
Compare-match
signal
N
N+1
Figure 11.14 OCRA Automatic Addition Timing



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