W971GG6JB-25 Winbond Electronics, W971GG6JB-25 Datasheet - Page 80

• Manufacturer Part Number: W971GG6JB-25
• Description: IC DDR2-800 SDRAM 1GB 84-WBGA
• Manufacturer: Winbond Electronics

Specifications of W971GG6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 1G (64M x 16)
• 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: Q5804012

10.21 Burst write operation followed by precharge: WL = (RL-1) = 4
10.22 Burst read operation with Auto-precharge: RL=4 (AL=1, CL=3, BL=8, t
CLK/CLK
CLK/CLK
CMD
DQ's
DQS,
DQS
CMD
DQS,
DQS
DQ's
2clks)
Posted CAS
first 4-bit prefetch
T0
WRITE A
T0
Post CAS
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
- 80 -
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: Mar. 28, 2011
Completion of the Burst Write
Dout
A3
T6
T6
NOP
NOP
Dout
A4
≥ t
RP
≥ t
W971GG6JB
Dout
A5
WR
T7
T7
NOP
NOP
Dout
A6
Dout
A7
Revision A07
Precharge A
T9
T8
Activate
Bank A
RTP
≤