WED2ZL361MV 查看數據表（PDF） - White Electronic Designs Corporation
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WED2ZL361MV Datasheet PDF : 12 Pages
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White Electronic Designs
WED2ZL361MV
TRUTH TABLES
Synchronous Truth Table
CEx# ADV#
WE#
BWx#
OE#
CKE#
CLK
Address Accessed
H
L
X
X
X
L
↑
N/A
X
H
X
X
X
L
↑
N/A
L
L
H
X
L
L
↑
External Address
X
H
X
X
L
L
↑
Next Address
L
L
H
X
H
L
↑
External Address
X
H
X
X
H
L
↑
Next Address
L
L
L
L
X
L
↑
External Address
X
H
X
L
X
L
↑
Next Address
L
L
L
H
X
L
↑
N/A
X
H
X
H
X
L
↑
Next Address
X
X
X
X
X
H
↑
Current Address
NOTES:
1. X means “Don’t Care.”
2. The rising edge of clock is symbolized by ( ↑ )
3. A continue deselect cycle can only be entered if a deselect cycle is executed first.
4. WRITE# = L means Write operation in WRITE TRUTH TABLE.
WRITE# = H means Read operation in WRITE TRUTH TABLE.
5. Operation finally depends on status of asynchronous input pins (ZZ and OE#).
6. CEx# refers to the combination of CE1#, CE2# and CE2#.
Operation
Deselect
Continue Deselect
Begin Burst Read Cycle
Continue Burst Read Cycle
NOP/Dummy Read
Dummy Read
Begin Burst Write Cycle
Continue Burst Write Cycle
NOP/Write Abort
Write Abort
Ignore Clock
Write Truth Table
WE#
BWa#
BWb#
BWc#
BWd#
Operation
H
X
X
X
X
Read
L
L
H
H
H
Write Byte a
L
H
L
H
H
Write Byte b
L
H
H
L
H
Write Byte c
L
H
H
H
L
Write Byte d
L
L
L
L
L
Write All Bytes
L
H
H
H
H
Write Abort/NOP
NOTES:
1. X means “Don’t Care.”
2. All inputs in this table must meet setup and hold time around the rising edge of CLK ( ↑ ).
June 2004
Rev. 3
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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