M68AF031A

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Table 8. Write Mode AC Characteristics

2. These parameters are defined as the time at which the outputs achieve the open circuit conditions and are not referenced to output

voltage levels.

Symbol

Parameter

M68AF031A

Unit

55

70

Min.

Max.

Min.

Max.

Write Cycle Time

55

70

ns

Address Valid to Chip Enable High

45

60

ns

Address valid to Chip Enable Low

0

0

ns

Address Valid to Write Enable High

45

60

ns

Address Valid to Write Enable Low

0

0

ns

Input Valid to Chip Enable High

25

30

ns

Input Valid to Write Enable High

25

30

ns

Chip Enable High to Address Transition

0

0

ns

Chip enable High to Input Transition

0

0

ns

Chip Enable Low to Chip Enable High

45

60

ns

Chip Enable Low to Write Enable High

45

60

ns

Write Enable High to Address Transition

0

0

ns

Write Enable High to Input Transition

0

0

ns

(1)

Write Enable High to Output Transition

5

5

ns

Write Enable Low to Chip Enable High

45

60

ns

(1,2)

Write Enable Low to Output Hi-Z

20

25

ns

Write Enable Low to Write Enable High

45

50

ns

AI05925

DATA RETENTION MODE

tR

5.5V

tCDR

VCC

4.5V

VDR > 2.0V

E

E

≥ VDR – 0.2V