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CY7C109D Datasheet(PDF) 8 Page - Cypress Semiconductor

Part # CY7C109D
Description  1-Mbit (128 K 횞 8) Static RAM Low active power
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C109D Datasheet(HTML) 8 Page - Cypress Semiconductor

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CY7C109D
CY7C1009D
Document #: 38-05468 Rev. *G
Page 8 of 14
Figure 3. Write Cycle No. 1 (CE1 or CE2 Controlled)
[17, 18]
Figure 4. Write Cycle No. 2 (WE Controlled, OE HIGH During Write) [17, 18]
Switching Waveforms (continued)
tWC
DATA VALID
tAW
tSA
tPWE
tHA
tHD
tSD
tSCE
tSCE
CE1
ADDRESS
CE2
WE
DATA I/O
tHD
tSD
tPWE
tSA
tHA
tAW
tSCE
tSCE
tWC
tHZOE
DATAIN VALID
NOTE 19
CE1
ADDRESS
CE2
WE
DATA I/O
OE
Notes
17. Data I/O is high impedance if OE = VIH.
18. If CE1 goes HIGH or CE2 goes LOW simultaneously with WE going HIGH, the output remains in a high-impedance state.
19. During this period the I/Os are in the output state and input signals should not be applied.
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