HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 184

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6. Bus Controller
6.7.2
After driving the BREQ pin low, hold it low until BACK goes low. If BREQ returns to the high
level before BACK goes lows, the bus arbiter may operate incorrectly.
To terminate the external-bus-released state, hold the BREQ signal high for at least three states. If
BREQ is high for too short an interval, the bus arbiter may operate incorrectly.
Rev.4.00 Aug. 20, 2007 Page 140 of 638
REJ09B0395-0400
BREQ Pin Input Timing
Address bus
( A
PA
23
φ
to A
7
to PA
20
)
4
Figure 6.24 BRCR Write Timing
High-impedance
T
1
BRCR address
T
2
T
3