HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 180

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

6. Bus Controller
6.5.2
Table 6.5 shows the pin states in an idle cycle.
Table 6.5
Pins
A
D
CSn
AS
RD
HWR
LWR
Rev.4.00 Aug. 20, 2007 Page 136 of 638
REJ09B0395-0400
23
15
to A
to D
Address bus
0
0
Pin States in Idle Cycle
Pin States in Idle Cycle
CSn
RD
φ
Simultaneous change of RD and
CSn: possibility of mutual overlap
(a) Idle cycle not inserted
Bus cycle A Bus cycle B
T
1
Figure 6.20 Example of Idle Cycle Operation
T
2
T
3
T
1
T
2
Pin State
Next cycle address value
High impedance
High
High
High
High
High
Address bus
CSn
RD
φ
(b) Idle cycle inserted
Bus cycle A Bus cycle B
T
1
T
2
T
3
T
i
T
1
T
2