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UPD44164085F5-E50-EQ1 Datasheet(PDF) 11 Page - NEC

Part # UPD44164085F5-E50-EQ1
Description  18M-BIT DDRII SRAM SEPARATE I/O 2-WORD BURST OPERATION
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
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UPD44164085F5-E50-EQ1 Datasheet(HTML) 11 Page - NEC

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Data Sheet M15823EJ7V
1DS
µµµµPD44164085, 44164185, 44164365
Electrical Specifications
Absolute Maximum Ratings
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Supply voltage
VDD
–0.5
+2.9
V
Output supply voltage
VDDQ
–0.5
VDD
V
Input voltage
VIN
–0.5
VDD + 0.5 (2.9 V MAX.)
V
Input / Output voltage
VI/O
–0.5
VDDQ + 0.5 (2.9 V MAX.)
V
Operating ambient temperature
TA
0
70
°C
Storage temperature
Tstg
–55
+125
°C
Caution Exposing the device to stress above those listed in Absolute Maximum Ratings could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
Recommended DC Operating Conditions (TA = 0 to 70
°°°°C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Note
Supply voltage
VDD
1.7
1.9
V
Output supply voltage
VDDQ
1.4
VDD
V
1
High level input voltage
VIH (DC)
VREF + 0.1
VDDQ + 0.3
V
1, 2
Low level input voltage
VIL (DC)
–0.3
VREF – 0.1
V
1, 2
Clock input voltage
VIN
–0.3
VDDQ + 0.3
V
1, 2
Reference voltage
VREF
0.68
0.95
V
Notes 1. During normal operation, VDDQ must not exceed VDD.
2. Power-up: VIH
≤ VDDQ + 0.3 V and VDD ≤ 1.7 V and VDDQ ≤ 1.4 V for t ≤ 200 ms
Recommended AC Operating Conditions (TA = 0 to 70
°°°°C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Note
High level input voltage
VIH (AC)
VREF + 0.2
V
1
Low level input voltage
VIL (AC)
VREF – 0.2
V
1
Note 1. Overshoot: VIH (AC)
≤ VDD + 0.7 V for t ≤ TKHKH/2
Undershoot: VIL (AC)
≥ – 0.5 V for t ≤ TKHKH/2
Control input signals may not have pulse widths less than TKHKL (MIN.) or operate at cycle rates less than
TKHKH (MIN.).


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