WED9LAPC2C16V8BC 데이터 시트보기 (PDF) - White Electronic Designs => Micro Semi
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WED9LAPC2C16V8BC Datasheet PDF : 24 Pages
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White Electronic Designs WED9LAPC2C16V8BC
SDRAM CURRENT STATE TRUTH TABLE (CONT.)
Current State
Write with
Auto Precharge
Precharging
Row Activating
Write Recovering
Write Recovering
with Auto
Precharge
VCRAS#
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
VCCAS#
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
VCWE#
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
Command
VCBS VCADDR
OP Code
X
X
X
X
BA Row Address
BA
Column
BA
Column
X
X
X
X
OP Code
X
X
X
X
BA Row Address
BA
Column
BA
Column
X
X
X
X
OP Code
X
X
X
X
BA Row Address
BA
Column
BA
Column
X
X
X
X
OP Code
X
X
X
X
BA Row Address
BA
Column
BA
Column
X
X
X
X
OP Code
X
X
X
X
BA Row Address
BA
Column
BA
Column
X
X
X
X
Description
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write w/o Precharge
Read w/o Precharge
Burst Termination
No Operation
Mode Register Set
Auto or Self Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Mode Register Set
Auto orSelf Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Mode Register Set
Auto orSelf Refresh
Precharge
Bank Activate
Write
Read
Burst Termination
No Operation
Action
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Continue the Burst
ILLEGAL
ILLEGAL
No Operation; Bank(s) idle after tRP
ILLEGAL
ILLEGAL
ILLEGAL
No Operation; Bank(s) idle after tRP
No Operation; Bank(s) idle after tRP
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
No Operation; Row active after tRCD
No Operation; Row active after tRCD
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Start Write; Determine if Auto Precharge
Start Read; Determine if Auto Precharge
No Operation; Row active after tDPL
No Operation; Row active after tDPL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
No Operation; Precharge after tDPL
No Operation; Precharge after tDPL
Notes
2
2
2
2
20
2
2
2
2
2
2
6
6
2
2
2,6
2,6
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July, 2000
Rev. 0
9
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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