NT5SV16M4DT 查看數據表（PDF） - Unspecified
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NT5SV16M4DT Datasheet PDF : 21 Pages
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NT5SV16M4DT
NT5SV8M8DT
NT5SV4M16DT
64Mb Synchronous DRAM
Clock Enable (CKE) Truth Table
Current State
CKE
Previous Current
Cycle
Cycle
Command
CS RAS CAS WE
BS0,
BS1
A11 - A0
Action
Notes
H
X
X
X
X
X
X
X INVALID
1
L
H
H
X
X
X
X
X Exit Self Refresh with Device Deselect
2
L
H
L
H
H
H
X
X Exit Self Refresh with No Operation
2
Self Refresh
L
H
L
H
H
L
X
X ILLEGAL
2
L
H
L
H
L
X
X
X ILLEGAL
2
L
H
L
L
X
X
X
X ILLEGAL
2
L
L
X
X
X
X
X
X Maintain Self Refresh
H
X
X
X
X
X
X
X INVALID
1
L
Power Down
L
H
H
X
X
X
X
H
L
X
X
X
X
X Power Down mode exit, all banks idle
2
X ILLEGAL
2
L
L
X
X
X
X
X
X Maintain Power Down Mode
H
H
H
X
X
X
H
H
L
H
X
X
H
H
L
L
H
X
3
Refer to the Idle State section of the
Current State Truth Table
3
3
H
H
L
L
L
H
X
X CBR Refresh
H
H
L
L
L
L
OP Code
Mode Register Set
4
All Banks Idle
H
H
H
L
H
X
X
X
L
L
H
X
X
L
L
L
H
X
3
Refer to the Idle State section of the
Current State Truth Table
3
3
H
L
L
L
L
H
X
X Entry Self Refresh
4
H
L
L
L
L
L
OP Code
Mode Register Set
L
X
X
X
X
X
X
X Power Down
4
H
Any State
other than
H
listed above
L
H
X
X
X
X
X
L
X
X
X
X
X
H
X
X
X
X
X
X
Refer to operations in the Current State
Truth Table
X Begin Clock Suspend next cycle
5
X Exit Clock Suspend next cycle
L
L
X
X
X
X
X
X Maintain Clock Suspend
1. For the given Current State CKE must be low in the previous cycle.
2. When CKE has a low to high transition, the clock and other inputs are re-enabled asynchronously. The minimum setup time for CKE
(tCES) must be satisfied. When exiting power down mode, a NOP command (or Device Deselect Command) is required on the first rising
clock after CKE goes high (see page 26).
3. The address inputs depend on the command that is issued. See the Idle State section of the Current State Truth Table for more informa-
tion.
4. The Precharge Power Down Mode, the Self Refresh Mode, and the Mode Register Set can only be entered from the all banks idle state.
5. Must be a legal command as defined in the Current State Truth Table.
REV 1.1
10/01
9
© NANYA TECHNOLOGY CORP. All rights reserved.
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
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