SH7670 Datasheet, PDF (196/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 7 Bus State Controller (BSC)
6. Refresh function
 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).
7. Usage as interval timer for refresh counter
 Generates an interrupt request at compare match.
Rev. 1.00 Nov. 14, 2007 Page 170 of 1262
REJ09B0437-0100