HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 96

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

2. CPU
2.9.3
The on-chip supporting modules are accessed in three states. The data bus is 8 or 16 bits wide,
depending on the internal I/O register being accessed. Figure 2.17 shows the on-chip supporting
module access timing. Figure 2.18 indicates the pin states.
Rev.4.00 Aug. 20, 2007 Page 52 of 638
REJ09B0395-0400
Figure 2.16 Pin States during On-Chip Memory Access (Address Update Mode 1)
On-Chip Supporting Module Access Timing
Address bus
φ
Internal address bus
Internal read signal
Internal data bus
(read access)
Internal write signal
Internal data bus
(write access)
φ
AS
D
15
,
to D
RD HWR LWR
,
0
Figure 2.15 On-Chip Memory Access Cycle
,
High
T state
1
T
1
High impedance
Bus cycle
Address
Address
Read data
Write data
T state
2
T
2