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CYM1831
Document #: 38-05270 Rev. **
Page 5 of 8
Note:
10. If CS goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
Truth Table
CSN WE OE Inputs/Outputs
Mode
H
X
X
High Z
Deselect/Power-Down
L
H
L
Data Out
Read
L
L
X
Data In
Write
L
H
H
High Z
Deselect
Switching Waveforms (continued)
tWC
DATA VALID
DATA UNDEFINED
HIGH IMPEDANCE
tSCS
tAW
tSA
tPWE
tHA
tHD
tHZWE
tLZWE
tSD
CS
WE
ADDRESS
DATA IN
DATA OUT
Write Cycle No. 1 (WE Controlled)[6]
tWC
DATA VALID
DATA UNDEFINED
HIGH IMPEDANCE
tSCS
tAW
tPWE
tHA
tHD
tHZWE
tSD
CS
WE
ADDRESS
DATA IN
DATA OUT
tSA
Write Cycle No. 2 (CS Controlled)[6, 10]
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