WSE128K16-35G2TC Просмотр технического описания (PDF) - Unspecified
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WSE128K16-35G2TC Datasheet PDF : 15 Pages
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WSE128K16-XXX
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 imped-
ance state. This two line control prevents bus contention.
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
EEPROM AC READ CHARACTERISTICS
(VCC = 5.0V, VSS = 0V, TA = -55°C to +125°C)
Symbol
tRC
tACC
tACS
tOH
tOE
tDF
-120
Min
Max
120
120
120
0
0
50
70
-150
Min
Max
150
150
150
0
0
55
70
-300
Unit
Min
Max
300
ns
300
ns
300
ns
0
ns
0
85
ns
70
ns
FIG. 9 EEPROM READ WAVEFORMS
ADDRESS
ECS1-2
OE
NOTES:
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.
EEPROM
DATA
OUTPUT
t RC
ADDRESS VALID
t ACS
t OE
t ACC
HIGH Z
t DF
t OH
OUTPUT
VALID
White Electronic Designs Corporation • Phoenix, AZ • (602) 437-1520
8
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