WSF41632-22XX

6

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

October, 2002

Rev. 4

PRELIMINARY

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

FLASH AC CHARACTERISTICS – WRITE/ERASE/PROGRAM OPERATIONS, FWE# CONTROLLED

Parameter

Symbol

-120

Unit

Min

Max

Write Cycle Time

120

ns

Chip Select Setup Time

0ns

Write Enable Pulse Width

50

ns

Address Setup Time

0ns

Data Setup Time

50

ns

Data Hold Time

0ns

Address Hold Time

50

ns

Write Enable Pulse Width High

20

ns

Duration of Byte Programming Operation (1)

300

µs

Chip and Sector Erase Time (2)

15

sec

Read Recovery Time Before Write

0µs

50

µs

Chip Programming Time

11

sec

Output Enable Setup Time

0ns

Output Enable Hold Time (4)

10

ns

Chip Erase Time (3)

64

sec

NOTES:

3. Typical value for Chip Erase Time is 8sec.

4. For Toggle and Data# Polling.

FLASH AC CHARACTERISTICS – READ ONLY OPERATIONS

Parameter

Symbol

-120

Unit

Min

Max

Read Cycle Time

120

ns

Address Access Time

120

ns

Chip Select Access Time

120

ns

OE# to Output Valid

50

ns

Chip Select to Output High Z (1)

30

ns

OE# High to Output High Z (1)

30

ns

Output Hold from Address, FCS# or OE# Change, whichever is first

0ns

1. Guaranteed by design, not tested.