WSE128K16-XXX

8

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

White Electronic Designs

PRELIMINARY

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

March 2005

Rev. 3

FIGURE 9 – EEPROM READ WAVEFORMS

EEPROM READ

The WSE128K16-XXX EEPROM stores data at the

memory location determined by the address pins. When

ECS# and OE# are low and EWE# is high, this data is

present on the outputs. When ECS# and OE# are high,

the outputs are in a high impedance state. This two line

control prevents bus contention.

EEPROM AC READ CHARACTERISTICS

Read Cycle Parameter

Symbol

-120

-150

-300

Unit

Min

Max

Min

Max

Min

Max

Read Cycle Time

120

150

300

ns

Address Access Time

120

150

300

ns

Chip Select Access Time

120

150

300

ns

Output Hold from Add. Change, OE# or ECS#

000

ns

Output Enable to Output Valid

050055085

ns

Chip Select or OE# to High Z Output

70

70

70

ns

ADDRESS

OE#

EEPROM

DATA

OUTPUT

OUTPUT

VALID

ADDRESS VALID

HIGH Z