FT28HC256

Characteristics subject to change without notice.

11 of 23

REV 1.0

A.C. CHARACTERISTICS

(Over the recommended operating conditions, unless otherwise specified.

Read Cycle Limits

Read Cycle

Notes:

point when CE, OE

Address

CE

OE

WE

Data Valid

Data I/O

HIGH Z

Data Valid

return HIGH (whichever occurs first) to the time when the outputs are no longer diven.

Symbol

Parameter

Unit

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Read cycle time

70

90

120

150

ns

Chip enable access time

70

90

120

150

ns

Address access time

70

90

120

150

ns

Output enable access time

35

40

50

50

ns

CE LOW to active output

0

0

0

0

ns

0

0

0

0

ns

HIGH to high Z output

35

40

50

50

ns

35

40

50

50

ns

Output hold from address change

0

0

0

0

ns