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CY7C182
Document #: 38-05031 Rev. **
Page 4 of 7
Switching Waveforms
Notes:
9.
Device is continuously selected. OE, CE1 = VIL. CE2 = VIH.
10. If CE1 goes HIGH and CE2 goes LOW simultaneously with WE HIGH, the output remains in a high-impedance state.
Read Cycle
No. 1
ADDRESS
DATA OUT
PREVIOUS DATA VALID
DATA VALID
tRC
tAA
tOHA
C182–5
[4, 9]
Read Cycle No. 2
50%
50%
DATA VALID
tRC
tACE1
tACE2
tDOE
tLZOE
tLZCE
tPU
HIGH IMPEDANCE
IMPEDANCE
ICC
ISB
tHZOE
tHZCE
tPD
OE
HIGH
DATA OUT
VCC
SUPPLY
CURRENT
CE1
OE
CE2
C182–6
[4, 10]
Write Cycle No. 1 (WE Controlled)
DATA VALID
DATA UNDEFINED
HIGH IMPEDANCE
tHD
tHZWE
tSD
tLZWE
tPWE
tSA
tHA
tAW
tSCE1
tSCE2
tWC
DATA IN
DATA I/O
ADDRESS
CS1
WE
CS2
C182–7
[6]
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