h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 197

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Table 6.5 shows the pin states in an idle cycle.
Table 6.5
Pins
A23 to A0, IOS
D15 to D0
AS
RD
HWR, LWR
Address bus
HWR, LWR
Data bus
Pin States in Idle Cycle
RD
(a) No idle cycle insertion
T
1
Bus cycle A
Long output floating time
Figure 6.16 Examples of Idle Cycle Operation
T
2
T
3
Bus cycle B
T
1
T
2
Data collision
Pin State
Contents of immediately following bus cycle
High impedance
High
High
High
Address bus
HWR, LWR
Data bus
RD
Rev. 3.00 Mar 21, 2006 page 143 of 788
T
1
Bus cycle A
Section 6 Bus Controller (BSC)
T
(b) Idle cycle insertion
2
T
3
T
I
Bus cycle B
REJ09B0300-0300
T
1
T
2