HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 97

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

2.9.4
The external address space is divided into eight areas (areas 0 to 7). Bus-controller settings
determine whether each area is accessed via an 8-bit or 16-bit data bus, and whether it is accessed
in two or three states. For details see section 6, Bus Controller.
Read
access
Write
access
φ
Address bus
AS
D
15
,
Access to External Address Space
to D
RD HWR LWR
Figure 2.18 Pin States during Access to On-Chip Supporting Modules
φ
Address bus
Internal read signal
Internal data bus
Internal write signal
Internal data bus
,
0
Figure 2.17 Access Cycle for On-Chip Supporting Modules
,
High
T
1
T state
1
High impedance
Address
Rev.4.00 Aug. 20, 2007 Page 53 of 638
T
Bus cycle
2
Address
T state
2
Read data
Write data
T
3
T state
3
REJ09B0395-0400
2. CPU