CY7C1049B-20VI 参数 Datasheet PDF下载

CY7C1049B

Switching Waveforms

(continued)

Write Cycle No. 1 (CE Controlled)

[15, 16]

t

WC

ADDRESS

t

SCE

CE

t

SA

t

SCE

t

AW

t

PWE

WE

t

SD

DATA I/O

DATA VALID

t

HD

t

HA

Write Cycle No. 2 (WE Controlled, OE HIGH During Write)

[15, 16]

t

WC

ADDRESS

t

SCE

CE

t

AW

t

SA

WE

t

PWE

t

HA

OE

t

SD

DATA I/O

NOTE 17

t

HZOE

Notes:

15. Data I/O is high impedance if OE = V

IH

.

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

17. During this period the I/Os are in the output state and input signals should not be applied.

t

HD

DATA

IN

VALID

Document #: 38-05169 Rev. *A

Page 7 of 10