參數(shù)資料
型號： μPD4516821A
廠商： NEC Corp.
英文描述： 16M-bit Synchronous DRAM(16M 同步動態(tài)RAM)
中文描述： 1,600位同步DRAM（1,600同步動態(tài)RAM）的
文件頁數(shù)： 35/86頁
文件大?。?/td> 904K
代理商： ΜPD4516821A
μ
PD4516421A, 4516821A, 4516161A for Rev. P
35
13. Electrical Specifications
All voltage are referenced to V
SS
(GND).
After power up, wait more than 100
μ
s and then, execute
Power on sequence and Auto Refresh
before proper
device operation is achieved.
Absolute Maximum Ratings
Parameter
Symbol
Condition
Rating
Unit
Voltage on power supply pin relative to GND
V
CC
, V
CC
Q
–1.0 to +4.6
V
Voltage on input pin relative to GND
V
T
–1.0 to +4.6
V
Short circuit output current
I
O
50
mA
Power dissipation
P
D
1
W
Operating ambient temperature
T
A
0 to +70
°
C
Storage temperature
T
stg
–55 to +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 Operating Conditions
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Supply voltage
V
CC
3.0
3.3
3.6
V
High level input voltage
V
IH
2.0
V
CC
+ 0.3
Note 1
V
Low level input voltage
V
IL
–0.3
Note 2
+0.8
V
Operating ambient temperature
T
A
0
70
°
C
Notes 1.
V
IH
(MAX.) = V
CC
+ 2.0 V (Pulse width
≤
3 ns)
2.
V
IL
(MIN.) = –2.0 V (Pulse width
≤
3 ns)
Capacitance (T
A
= 25
°
C, f = 1 MHz)
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Input capacitance
C
I1
A0 to A11
2.5
4
pF
C
I2
CLK, CKE, CS, RAS, CAS, WE,
DQM, UDQM, LDQM
2.5
4
pF
Data input/output capacitance
C
I/O
DQ0 to DQ15
4
6
pF
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