W9725G6JB-25 Winbond Electronics, W9725G6JB-25 Datasheet - Page 76

• Manufacturer Part Number: W9725G6JB-25
• Description: IC DDR2-800 SDRAM 256MB 84WBGA
• Manufacturer: Winbond Electronics

Specifications of W9725G6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 256M (16Mx16)
• 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

10.16 Burst read operation followed by precharge: RL=4 (AL=1, CL=3, BL=4, t
10.17 Burst read operation followed by precharge: RL=4 (AL=1, CL=3, BL=8, t
CLK/CLK
CLK/CLK
CMD
DQS,
DQS
DQ's
≤ 2clks)
≤ 2clks)
CMD
DQS,
DQS
DQ's
first 4-bit prefetch
T0
Post CAS
READ A
Post CAS
T0
READ A
AL = 1
AL = 1
T1
T1
NOP
NOP
≥ t
≥ t
RL = 4
RAS
RTP
second 4-bit prefetch
AL+BL/2 clks
AL + BL/2 clks
RL = 4
T2
T2
NOP
CL = 3
NOP
CL = 3
T3
Precharge
T3
NOP
- 76 -
T4
T4
NOP
≥ t
Dout
NOP
Dout
A0
RTP
A0
Dout
Dout
A1
A1
Precharge
T5
≥ t
T5
RP
NOP
Dout
Publication Release Date: Mar. 10, 2010
Dout
A2
A2
Dout
Dout
A3
A3
T6
T6
NOP
NOP
Dout
A4
Dout
W9725G6JB
A5
T7
T7
Activate
Bank A
NOP
Dout
A6
Dout
A7
Revision A01
T8
T8
NOP
NOP
RTP
RTP