WE128K32P-140G2TM 查看數據表（PDF） - White Electronic Designs => Micro Semi
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WE128K32P-140G2TM Datasheet PDF : 15 Pages
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WE128K32-XXX
READ
The WE128K32-XXX stores data at the memory location
determined by the address pins. When CS and OE are low and
WE is high, this data is present on the outputs. When CS and
OE are high, the outputs are in a high impedance state. This
two line control prevents bus contention.
AC READ CHARACTERISTICS
(VCC = 5.0V, VSS = 0V, TA = -55°C to +125°C)
Read Cycle Parameter
Read Cycle Time
Symbol
-120
-140
-150
-200
-250
-300
Unit
Min Max Min Max Min Max Min Max Min Max Min Max
tRC
120
140
150
200
250
300
ns
Address Access Time
tACC
120
140
150
200
250
300
ns
Chip Select Access Time
tACS
120
140
150
200
250
300
ns
Output Hold from Add. Change, OE or CS tOH
0
0
0
0
0
0
ns
Output Enable to Output Valid
tOE
0 50
0 55 0 55 0 55 0 85
0 85
ns
Chip Select or OE to High Z Output
tDF
70
70
70
70
70
70
ns
FIG. 7
READ WAVEFORMS
ADDRESS
CSC1S-4
OE
NOTES:
OE may be delayed up to tACS - tOE after the
falling edge of CS without impact on tOE or by
tACC - tOE after an address change without
impact on tACC.
OUTPUT
t RC
ADDRESS VALID
t ACS
t OE
t ACC
HIGH Z
t DF
t OH
OUTPUT
VALID
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
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