HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 992

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

Section 25 Electrical Characteristics
Rev. 4.00 Sep. 14, 2005 Page 942 of 982
REJ09B0023-0400
A12/A11*
D31 to D0
A25 to A0
DACKn*
RASU/L
CASU/L
RD/WR
DQMxx
(Four Write Cycles) (Auto Precharge, WTRCD = 1 Cycle, TRWL = 1 Cycle)
CKIO
CKE
CSn
BS
1
2
Note:
Figure 25.30 Synchronous DRAM Burst Write Bus Cycle
t
t
t
t
t
t
AD1
CSD1
t
RWD1
RASD1
DQMD1
AD1
DACD
1. An address pin to be connected to pin A10 of SDRAM.
2. Waveform for DACKn when active low is selected.
Tr
address
t
Row
RASD1
Trw
(High)
t
t
t
t
t
t
AD1
RWD1
CASD1
WDD2
BSD
AD1
Tc1
t
t
AD1
WDH2
WRIT command
Tc2
address
Column
t
AD1
Tc3
t
AD1
t
t
WDD2
AD1
Tc4
command
WriteA
t
t
t
t
t
t
BSD
t
AD1
CASD1
DQMD1
t
t
RWD1
WDH2
DACD
AD1
CSD1
Trwl