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HD6432138SW Scheda tecnica(PDF) 354 Page - Renesas Technology Corp

Il numero della parte HD6432138SW
Spiegazioni elettronici  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1061 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432138SW Scheda tecnica(HTML) 354 Page - Renesas Technology Corp

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Section 11 16-Bit Free-Running Timer
Rev. 4.00 Jun 06, 2006 page 300 of 1004
REJ09B0301-0400
Contention between OCR Write and Compare-Match: If a compare-match occurs during the
state after an OCRA or OCRB write cycle, the write takes priority and the compare-match signal
is inhibited.
Figure 11.20 shows this type of contention.
If automatic addition of OCRAR/OCRAF to OCRA is selected, and a compare-match occurs in
the cycle following the OCRA, OCRAR and OCRAF write cycle, the OCRA, OCRAR and
OCRAF write takes priority and the compare-match signal is inhibited. Consequently, the result of
the automatic addition is not written to OCRA.
Figure 11.21 shows this type of contention.
T1
T2
OCRA or OCRB write cycle
Address
Internal write signal
φ
FRC
OCR
N
M
Write data
OCR address
N
N + 1
Compare-match
signal
Inhibited
Figure 11.20 Contention between OCR Write and Compare-Match
(When Automatic Addition Function Is Not Used)



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