r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 178

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 Bus Controller (BSC)
• Idle cycle insertion
• Write buffer function
• Bus arbitration function
Notes: 1. Not supported by the H8S/2456 Group and H8S/2454 Group.
Rev. 1.00 Sep. 19, 2008 Page 148 of 1342
REJ09B0467-0100
Idle cycles can be inserted between external read cycles to different areas
Idle cycles can be inserted before the write cycle after a read cycle
Idle cycles can be inserted before the read cycle after a write cycle
External write cycles and internal accesses can be executed in parallel
DMAC single address transfers and internal accesses can be executed in parallel
Includes a bus arbiter that arbitrates bus mastership between the CPU, DMAC, DTC, and
EXDMAC *
2. Not supported by the H8S/2454 Group.
2