M68AF511A

12/18

Figure 11. Chip Enable Controlled, Write AC Waveforms

Table 8. Write Mode AC Characteristics

Note: 1. 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

M68AF511A

Unit

55

70

Write Cycle Time

Min

55

70

ns

Address Valid to Chip Enable High

Min

45

60

ns

Address Valid to Chip Enable Low

Min

0

0

ns

Address Valid to Write Enable High

Min

45

60

ns

Address Valid to Write Enable Low

Min

0

0

ns

Input Valid to Chip Enable High

Min

25

30

ns

Input Valid to Write Enable High

Min

25

30

ns

Chip Enable High to Address Transition

Min

0

0

ns

Chip Enable High to Input Transition

Min

0

0

ns

Chip Enable Low to Chip Enable High

Min

45

60

ns

Chip Enable Low to Write Enable High

Min

45

60

ns

Write Enable High to Address Transition

Min

0

0

ns

Write Enable High to Input Transition

Min

0

0

ns

(1)

Write Enable High to Output Transition

Min

5

5

ns

Write Enable Low to Chip Enable High

Min

45

60

ns

(1,2)

Write Enable Low to Output Hi-Z

Max

20

25

ns

Write Enable Low to Write Enable High

Min

45

60

ns

AI05914

tAVAV

tEHAX

tDVEH

A0-A18

E

W

DQ0-DQ7

VALID

tAVEH

tAVEL

tWLEH

tELEH

tEHDX

DATA INPUT