W9825G6DH-6I Winbond Electronics, W9825G6DH-6I Datasheet - Page 12

• 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

8. OPERATION MODE
Fully synchronous operations are performed to latch the commands at the positive edges of CLK.
Table 1 shows the truth table for the operation commands.
Table 1 Truth Table (Note (1) , (2))
Notes:
(1) v = valid
(2) CKEn signal is input level when commands are provided.
(3) These are state of bank designated by BS0, BS1 signals.
(4) Device state is full page burst operation.
(5) Power Down Mode can not be entered in the burst cycle.
Bank Active
Bank Precharge
Precharge All
Write
Write with Auto-
precharge
Read
Read with Auto-
precharge
Mode Register Set
No-operation
Burst Stop
Device Deselect
Auto-refresh
Self-refresh Entry
Self-refresh Exit
Clock Suspend Mode
Entry
Power Down Mode
Entry
Clock Suspend Mode
Exit
Power Down Mode
Exit
Data Write/Output
Enable
Data Write/Output
Disable
CKEn-1 signal is the input level one clock cycle before the command is issued.
When this command asserts in the burst cycle, device state is clock suspend mode.
COMMAND
x = Don't care
(Power Down)
Active (3)
Active (3)
Active (3)
Active (3)
Active (4)
Active (5)
STATE
DEICE
Active
Active
Active
Active
(S.R.)
L = Low Level H = High Level
Any
Any
Any
Any
Any
Idle
Idle
Idle
Idle
Idle
Idle
CKEn-1 CKEn
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
H
H
H
H
H
H
x
x
x
x
x
x
x
x
x
x
x
L
L
L
L
x
x
- 12 -
DQM BS0, 1
H
L
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
v
v
v
v
v
x
x
x
v
v
x
x
x
x
x
x
x
x
x
x
x
x
x
A10
H
H
H
Publication Release Date: Apr. 24, 2008
L
v
L
L
v
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
A11, A12
A0−A9
v
x
x
v
v
v
v
v
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
W9825G6DH
CS
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
x
L
x
L
x
x
RAS
H
H
H
H
H
H
H
H
H
L
L
L
L
x
L
L
x
x
x
x
x
x
x
Revision A12
CAS
H
H
H
H
H
H
H
H
L
L
L
L
L
x
L
L
x
x
x
x
x
x
x
WE
H
H
H
H
H
H
L
L
L
L
L
L
x
x
x
x
x
x
x
x
x
x
x