FT28HC256

Characteristics subject to change without notice.

12 of 23

REV

1.0

Write Cycle Limits

time the device requires to automatically complete the internal write operation.

WE Controlled Write Cycle

Symbol

Parameter

Min.

Max.

Unit

(7)

Write cycle time

3

5

ms

Address setup time

0

ns

Address hold time

50

ns

Write setup time

0

ns

Write hold time

0

ns

CE pulse width

50

ns

OE HIGH setup time

0

ns

OE HIGH hold time

0

ns

WE pulse width

50

ns

(8)

WE HIGH recovery (page write only)

50

ns

Data valid

1µs

Data setup

50

ns

Data hold

0

ns

(8)

Delay to next write after polling is true

10

µs

Byte load cycle

0.15

100

µs

Address

CE

WE

OE

Data In

Data Out

HIGH Z

Data Valid