HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 438

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9
taken into consideration when setting the initial value of RTCNT. Making the RTCNT value 1 less
than the RTCOR value will enable refreshing to be started immediately.
After self-refreshing has been set, the self-refresh state continues even if the chip standby state is
entered using the LSI standby function, and is maintained even after recovery from standby mode
by an interrupt.
The self-refresh state is not cleared by a manual reset.
In case of a power-on reset, the bus state controller's registers are initialized, and therefore the
self-refresh state is cleared.
Rev. 3.00 Jan. 18, 2008 Page 376 of 1458
REJ09B0033-0300
A12/A11*
D31 to D0
A25 to A0
DACKn*
Notes:
DQMxx
RD/WR
CKIO
CKE
RAS
CAS
Bus State Controller (BSC)
CSn
BS
1
1. Address pin to be connected to the A10 pin of SDRAM.
2. The waveform for DACKn is when active low is specified.
2
Tp
Tpw
Figure 9.26
Trr
Hi-z
Trc
Self-Refresh Timing
Trc
Trc
Trc
Trc