h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 122

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
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.
Rev. 4.00 Jun 06, 2006 page 68 of 1004
REJ09B0301-0400
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