4 / 9 page
CY7C164
CY7C166
Document #: 38-05025 Rev. *A
Page 4 of 9
Switching Waveforms
Read Cycle No. 1[8,9]
Read Cycle No. 2[8,10]
Notes:
8. WE is HIGH for read cycle.
9. Device is continuously selected, CE = VIL. (CY7C166: OE = VIL also).
10. Address valid prior to or coincident with CE transition LOW.
ADDRESS
DATA OUT
PREVIOUS DATA VALID
DATA VALID
tRC
tAA
tOHA
C164–7
50%
50%
DATA VALID
tRC
tACE
tDOE
tLZOE
tLZCE
tPU
DATA OUT
HIGH IMPEDANCE
IMPEDANCE
ICC
ISB
tHZOE
tHZCE
tPD
OE
7C166
CE
HIGH
V CC
SUPPLY
CURRENT
C164–8
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