CY7C197N 데이터 시트보기 (PDF) - Cypress Semiconductor
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CY7C197N Datasheet PDF : 7 Pages
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Switching Waveforms
Read Cycle No. 1[12, 13]
tRC
ADDRESS
DATA OUT
tAA
tOHA
PREVIOUS DATA VALID
Read Cycle No. 2[12]
CY7C197N
DATA VALID
tRC
CE
DATA OUT
VCC
SUPPLY
CURRENT
tACE
tLZCE
HIGH IMPEDANCE
tPU
50%
DATA VALID
tHZCE
HIGH
IMPEDANCE
tPD
ICC
50%
ISB
Write Cycle No. 1 (WE Controlled)[11]
ADDRESS
CE
WE
DATA IN
DATA OUT
tWC
tSCE
tAW
tSA
DATA UNDEFINED
tHA
tPWE
tSD
tHD
DATA VALID
tHZWE
tLZWE
HIGH IMPEDANCE
Notes:
12. WE is HIGH for read cycle.
13. Device is continuously selected, CE = VIL.
14. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
C197-8
Document #: 001-06495 Rev. **
Page 4 of 7
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