HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 278

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

3. Contention between OCR write and compare match
270
If a compare match is generated in the T
OCRB, the write to OCRA or OCRB takes precedence and the compare match signal is
inhibited. Figure 9.34 shows the timing.
ø
Address
Internal write
signal
FRC
OCR
Compare match
signal
Figure 9.34 Contention between OCR Write and Compare Match
OCR lower byte write cycle
T
1
3
N
N
state of a write cycle to the lower byte of OCRA or
OCR address
T
2
T
3
N + 1
Write data
M
Inhibited