HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 320

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 12 Bus State Controller (BSC)
6. Byte-selection SRAM interface
7. Burst MPX-IO interface
8. Burst ROM interface (clock synchronous)
9. Bus arbitration
10. Refresh function
Rev. 4.00 Sep. 14, 2005 Page 270 of 982
REJ09B0023-0400
 Supports low-frequency and power-down modes.
 Issues MRS and EMRS commands.
 Can connect directly to a byte-selection SRAM
 Can connect directly to a peripheral LSI that needs an address/data multiplexing.
 Supports burst transfer
 Can connect directly to a ROM of the clock synchronous type
 Shares all of the resources with other CPU and outputs the bus enable after receiving the
 Supports the auto-refresh and self-refresh functions.
 Specifies the refresh interval using the refresh counter and clock selection
 Can execute concentrated refresh by specifying the refresh counts (1, 2, 4, 6, or 8)
bus request from external devices.