HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 172

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 Bus State Controller (BSC)
7.4.7
RTCOR is an 8-bit register. When RTCOR matches RTCNT, the CMF bit in RTCSR is set to 1
and RTCNT is cleared to 0. When the RFSH bit in SDCR is 1, a memory refresh request is issued.
The request is maintained until the refresh operation is performed. If the request is not processed
when the next matching occurs, the previous request is ignored.
When the RTCOR is written to, the upper 16 bits of the write data must be H'A55A to cancel write
protection.
Rev. 6.00 Jun. 12, 2007 Page 140 of 610
REJ09B0131-0600
Bit
31 to 8
7 to 0
Refresh Time Constant Register (RTCOR)
Bit Name


Initial
Value
All 0
All 0
R/W
R
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
8-bit Counter