HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 87

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

2.9.3
The on-chip supporting modules are accessed in two states. The data bus is either 8 bits or 16 bits
wide, depending on the particular internal I/O register being accessed. Figure 2.19 shows the
access timing for the on-chip supporting modules. Figure 2.20 shows the pin states.
ø
Internal address bus
Read
access
Write
access
On-Chip Supporting Module Access Timing
Internal read signal
Internal data bus
Internal write signal
Internal data bus
Figure 2.19 On-Chip Supporting Module Access Cycle
T1
Bus cycle
Address
Write data
Read data
T2
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