WSE128K16-35G2TC Просмотр технического описания (PDF) - White Electronic Designs => Micro Semi
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WSE128K16-35G2TC Datasheet PDF : 15 Pages
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White Electronic Designs
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.
WSE128K16-XXX
PRELIMINARY
EEPROM AC READ CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Read Cycle Parameter
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Hold from Add. Change, OE# or ECS#
Output Enable to Output Valid
Chip Select or OE# to High Z Output
-120
-150
-300
Symbol
Unit
Min
Max
Min
Max
Min
Max
tRC
120
150
300
ns
tACC
120
150
300
ns
tACS
120
150
300
ns
tOH
0
0
0
ns
tOE
0
50
0
55
0
85
ns
tDF
70
70
70
ns
FIGURE 9 – EEPROM READ WAVEFORMS
ADDRESS
ECS#1-2
OE#
EEPROM
DATA
OUTPUT
tRC
ADDRESS VALID
tACS
tOE
tACC
HIGH Z
tDF
tOH
OUTPUT
VALID
Note: OE# may be delayed up to tACS - tOE after the falling edge of ECS# without impact on tOE or by tACC - tOE after an address change without impact on tACC.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
March 2005
Rev. 3
8
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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