HD6473032F16 Datasheet, PDF (184/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 7 Refresh Controller
RTCNT is write-disabled when the PSRAME bit or DRAME bit is set to 1. RTCNT is initialized
to H'00 by a reset and in standby mode.
7.2.4 Refresh Time Constant Register (RTCOR)
RTCOR is an 8-bit readable/writable register that determines the interval at which RTCNT is
compare matched.
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RTCOR and RTCNT are constantly compared. When their values match, the CMF flag is set to 1
in RTMCSR, and RTCNT is simultaneously cleared to H'00.
RTCOR is write-disabled when the PSRAME bit or DRAME bit is set to 1. RTCOR is initialized
to H'FF by a reset and in hardware standby mode. In software standby mode it retains its previous
value.
Rev. 3.00 Mar 21, 2006 page 154 of 814
REJ09B0302-0300