CY7C1049G

CY7C1049GE

Document Number: 001-95412 Rev. *E

Page 9 of 19

AC Switching Characteristics

Over the operating range of –40

C to 85 C

Parameter [14]

Description

10 ns

15 ns

Unit

Min

Max

Min

Max

Read Cycle

Read cycle time

10

–

15

–

ns

Address to data / ERR valid

–

10

–

15

ns

Data / ERR hold from address change

3

–

3

–

ns

CE LOW to data / ERR valid

–

10

–

15

ns

OE LOW to data / ERR valid

–

4.5

–

8

ns

OE LOW to low impedance[15]

0

–0–

ns

OE HIGH to HI-Z[15]

–

5–8

ns

CE LOW to low impedance[15]

3

–3–

ns

CE HIGH to HI-Z[15]

–

5–8

ns

CE LOW to power-up[16, 17]

0

–0–

ns

CE HIGH to power-down[16, 17]

–10–15

ns

Write Cycle [17, 18]

Write cycle time

10

–

15

–

ns

CE LOW to write end

7

–

12

–

ns

Address setup to write end

7

–

12

–

ns

Address hold from write end

0–

0

–

ns

Address setup to write start

0

–

0

–

ns

WE pulse width

7

–

12

–

ns

Data setup to write end

5

–

8

–

ns

Data hold from write end

0

–

0

–

ns

WE HIGH to low impedance[15]

3

–3–

ns

WE LOW to HI-Z[15]

–

5–8

ns

Notes

voltage.

16. These parameters are guaranteed by design and are not tested.

of these signals can terminate the operation. The input data setup and hold timing should be referenced to the edge of the signal that terminates the write.