W9825G6DH-6I Winbond Electronics, W9825G6DH-6I Datasheet - Page 38

• Manufacturer Part Number: W9825G6DH-6I
• Manufacturer: Winbond Electronics
• Type: SDRAMr

Specifications of W9825G6DH-6I

• Organization: 16Mx16
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 6/5ns
• Maximum Clock Rate: 166MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TSOP-II
• Operating Temp Range: -40C to 85C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 150mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Compliant

11.17
11.18 Timing Chart of Write to Read Cycle
Timing Chart of Read to Write Cycle
(1) CAS Latency=2
(2) CAS Latency=3
( a ) Command
( b ) Command
( a ) Command
( b ) Command
DQM
DQM
DQM
DQM
DQ
DQ
DQ
DQ
In the case of Burst Length=4
In the case of Burst Length = 4
(2) CAS Latency=3
(1) CAS Latency=2
0
( a ) Command
( b ) Command
( a ) Command
( b ) Command
Note: The Output data must be masked by DQM to avoid I/O conflict.
Write
DQM
DQM
DQM
DQM
Write
Write
Write
DQ
DQ
DQ
DQ
D0
D0
D0
D0
1
0
Read
Read
D1
D1
2
Read
Read
Read
Read
1
Read
Read
3
Write
Write
D0
2
D0
Write
Write
Q0
4
D1
D0
D0
3
D1
- 38 -
D2
D1
4
D1
D2
Q1
Q0
Q0
5
D3
D2
D2
5
D3
Q2
Q1
Q1
Q0
6
D3
D3
6
Q3
Q1
Q2
Q2
Publication Release Date: Apr. 24, 2008
7
7
Q2
Q3
Q3
8
8
Q3
9
9
W9825G6DH
10
10
11
11
Revision A12