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

White Electronic Designs

WSF128K32-XH2X

October 2004

Rev. 4

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

PRELIMINARY

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

Parameter

Symbol

-70

-90

-120

Unit

Min

Max

Min

Max

Min

Max

Write Cycle Time

70

90

120

ns

Chip Select Setup Time

000

ns

Write Enable Pulse Width

45

45

50

ns

Address Setup Time

000

ns

Data Setup Time

45

45

50

ns

Data Hold Time

000

ns

Address Hold Time

45

45

50

ns

Chip Select Hold Time

000

ns

Write Enable Pulse Width High

20

20

20

ns

Duration of Byte Programming Operation (min)

14

14

14

µs

Chip and Sector Erase Time

2.2

60

2.2

60

2.2

60

sec

Read Recovery Time Before Write

000

µs

50

50

50

µs

Chip Programming Time

12.5

12.5

12.5

sec

Output Enable Setup Time

000

ns

Output Enable Hold Time (1)

10

10

10

ns

1. For Toggle and Data# Polling.

FLASH AC CHARACTERISTICS – READ ONLY OPERATIONS

Parameter

Symbol

-70

-90

-120

Unit

Min

Max

Min

Max

Min

Max

Read Cycle Time

70

90

120

ns

Address Access Time

70

90

120

ns

Chip Select Access Time

70

90

120

ns

OE# to Output Valid

35

40

50

ns

Chip Select to Output High Z (1)

20

25

30

ns

OE# High to Output High Z (1)

20

25

30

ns

Output Hold from Address, FCS# or OE# Change,

whichever is first

000

ns

1. Guaranteed by design, not tested.