W9751G6JB-25 Winbond Electronics, W9751G6JB-25 Datasheet - Page 79

• Manufacturer Part Number: W9751G6JB-25
• Description: IC DDR2-800 SDRAM 512MB 84WBGA
• Manufacturer: Winbond Electronics

Specifications of W9751G6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 512M (32Mx16)
• Speed: 2.5ns
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.9 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 84-WBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5606783

10.22 Burst write operation followed by precharge: WL = (RL-1) = 4
10.23 Burst read operation with Auto-precharge: RL=4 (AL=1, CL=3, BL=8, t
CLK/CLK
CLK/CLK
CMD
DQS,
DQS
DQ's
CMD
DQS,
DQS
DQ's
2clks)
Posted CAS
first 4-bit prefetch
T0
T0
Post CAS
WRITE A
READA
A10 = 1
AL = 1
T1
T1
NOP
NOP
RL = 4
second 4-bit prefetch
WL = 4
AL + BL/2 clks
T2
T2
NOP
NOP
CL = 3
T3
T3
NOP
NOP
- 79 -
DIN A0 DIN A1 DIN A2 DIN A3
t
T4
T4
RTP
NOP
NOP
≥ t
Dout
A0
RTP
Dout
A1
T5
T5
NOP
NOP
Precharge begins here
Dout
A2
Publication Release Date: Aug. 03, 2010
Completion of the Burst Write
Dout
A3
T6
T6
NOP
NOP
Dout
A4
≥ t
RP
≥ t
Dout
A5
WR
W9751G6JB
T7
T7
NOP
NOP
Dout
A6
Dout
A7
Revision A04
Precharge A
T9
T8
Activate
Bank A
RTP
≤