h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 186

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

Section 6 Bus Controller (BSC)
8-Bit, 3-State Access Space: Figure 6.6 shows the bus timing for an 8-bit, 3-state access space.
When an 8-bit access space is accessed, the upper half (D15 to D8) of the data bus is used. Wait
states can be inserted.
Rev. 3.00 Mar 21, 2006 page 132 of 788
REJ09B0300-0300
Read
Write
AS/IOS (IOSE = 1)
AS/IOS (IOSE = 0)
Address bus
Figure 6.6 Bus Timing for 8-Bit, 3-State Access Space
D15 to D8
D15 to D8
D7 to D0
HWR
RD
T
1
Bus cycle
T
2
Valid
T
3
Invalid
Valid