CY62256 데이터 시트보기 (PDF) - Cypress Semiconductor

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CY62256

32Kx8 Static RAM

Cypress Semiconductor 

Switching Waveforms (continued)

Read Cycle No. 2 [11,12]

tRC

CE

tACE

OE

DATA OUT

VCC

SUPPLY

CURRENT

tDOE

tLZOE

HIGH IMPEDANCE

tLZCE

tPU

50%

DATA VALID

[8,13,14]

Write Cycle No. 1 (WE Controlled)

ADDRESS

CE

tSA

WE

tWC

tAW

tPWE

CY62256

tHZOE

tHZCE

HIGH

IMPEDANCE

tPD

50%

ICC

ISB

C62256–9

tHA

OE

DATA I/O

NOTE 15

tHZOE

tSD

DATAIN VALID

[8,13,14]

Write Cycle No. 2 (CE Controlled)

tWC

ADDRESS

CE

tSCE

tSA

tAW

WE

DATA I/O

tSD

DATAIN VALID

Notes:

12. Address valid prior to or coincident with CE transition LOW.

13. Data I/O is high impedance if OE = VIH.

14. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.

tHD

tHA

tHD

C62256–10

C62256–11

5

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