KM29W040AT, KM29W040AIT

FLASH MEMORY

8

AC Characteristics for Operation

2. The time to Ready depends on the value of the pull-up resistor tied R/B pin.

Parameter

Symbol

Min

Max

Unit

Data Transfer from Cell to Register

-

15

µs

ALE to RE Delay

250

-

ns

CE low to RE low (ID read)

250

-

ns

Ready to RE Low

100

-

ns

RE Pulse Width

60

-

ns

WE High to Busy

-

200

ns

Read Cycle Time

120

-

ns

RE Access Time

-

50

ns

RE High to Output Hi-Z

0

30

ns

CE High to Output Hi-Z

-

50

ns

RE High Hold Time

40

-

ns

Output Hi-Z to RE Low

0

-

ns

-

ns

RE Low to Status Output

-

60

ns

CE Low to Status Output

-

70

ns

WE High to RE Low

50

-

ns

RE access time(Read ID)

100

-

ns

-

5/10/500

µs

AC Timing Characteristics for Command / Address / Data Input

Parameter

Symbol

Min

Max

Unit

CLE Set-up Time

50

-

ns

CLE Hold Time

50

-

ns

CE Setup Time

50

-

ns

CE Hold Time

50

-

ns

WE Pulse Width

60

-

ns

ALE Setup Time

50

-

ns

ALE Hold Time

50

-

ns

Data Set-up Time

40

-

ns

Data Hold Time

20

-

ns

Write Cycle Time

120

-

ns

WE High Hold Time

40

-

ns