HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 999

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

A12/A11*
D31 to D0
A25 to A0
DACKn*
RASU/L
CASU/L
RD/WR
DQMxx
Figure 25.37 Synchronous DRAM Auto-Refreshing Timing
CKIO
CKE
CSn
BS
1
2
Note:
(WTRP = 1 Cycle, WTRC = 3 Cycles)
t
t
t
AD1
t
t
RASD1
CSD1
AD1
RWD1
1. An address pin to be connected to pin A10 of SDRAM.
2. Waveform for DACKn when active low is selected.
3. Pins D31 to D16 with weak keeper are retained as weak keepers.
Tp
t
t
t
RWD1
RASD1
CSD1
Tpw
t
t
t
RASD1
CASD1
CSD1
Trr
(Hi-Z)*
(High)
t
t
AD1
t
t
t
RASD1
AD1
CASD1
CSD1
Trc
3
Rev. 4.00 Sep. 14, 2005 Page 949 of 982
Trc
Section 25 Electrical Characteristics
Trc
t
RWD1
REJ09B0023-0400