h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 369

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

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 timing
Figure 11.20 Contention between OCR Write and Compare-Match
Address
Internal write signal
FRC
OCR
Compare-match
signal
(When Automatic Addition Function Is Not Used)
OCRA or OCRB write cycle
T
OCR address
1
N
N
T
Rev. 3.00 Jan 18, 2006 page 341 of 1044
2
Section 11 16-Bit Free-Running Timer
Write data
M
Prohibited
N + 1
REJ09B0280-0300