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KM416C256D Datasheet(PDF) 5 Page - Samsung semiconductor

Part No. KM416C256D
Description  256K x 16Bit CMOS Dynamic RAM with Fast Page Mode
Download  8 Pages
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

KM416C256D Datasheet(HTML) 5 Page - Samsung semiconductor

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KM416C256D, KM416V256D
CMOS DRAM
CAPACITANCE (TA=25¡É, VCC=5V or 3.3V, f=1MHz)
Parameter
Symbol
Min
Max
Units
Input capacitance [A0 ~ A8]
CIN1
-
5
pF
Input capacitance [RAS, UCAS, LCAS, W, OE]
CIN2
-
7
pF
Output capacitance [DQ0 - DQ15]
CDQ
-
7
pF
Test condition (5V device) : VCC=5.0V¡¾10%, Vih/Vil=2.4/0.8V, Voh/Vol=2.4/0.4V
Parameter
Symbol
-5
-6
-7
Units
Notes
Min
Max
Min
Max
Min
Max
Random read or write cycle time
tRC
90
110
130
ns
Read-modify-write cycle time
tRWC
132
152
177
ns
Access time from RAS
tRAC
50
60
70
ns
3,4,10
Access time from CAS
tCAC
15
15
20
ns
3,4,5
Access time from column address
tAA
25
30
35
ns
3,10
CAS to output in Low-Z
tCLZ
0
0
0
ns
3
Output buffer turn-off delay
tOFF
0
12
0
12
0
17
ns
6
Transition time (rise and fall)
tT
3
50
3
50
3
50
ns
2
RAS precharge time
tRP
30
40
50
ns
RAS pulse width
tRAS
50
10K
60
10K
70
10K
ns
RAS hold time
tRSH
15
15
20
ns
CAS hold time
tCSH
50
60
70
ns
CAS pulse width
tCAS
15
10K
15
10K
20
10K
ns
RAS to CAS delay time
tRCD
20
35
20
45
20
50
ns
4
RAS to column address delay time
tRAD
15
25
15
30
15
35
ns
10
CAS to RAS precharge time
tCRP
5
5
5
ns
Row address set-up time
tASR
0
0
0
ns
Row address hold time
tRAH
10
10
10
ns
Column address set-up time
tASC
0
0
0
ns
12
Column address hold time
tCAH
10
10
15
ns
12
Column address to RAS lead time
tRAL
25
30
35
ns
Read command set-up time
tRCS
0
0
0
ns
Read command hold time referenced to CAS
tRCH
0
0
0
ns
8
Read command hold time referenced to RAS
tRRH
0
0
0
ns
8
Write command set-up time
tWCS
0
0
0
ns
7
Write command hold time
tWCH
10
10
15
ns
Write command pulse width
tWP
10
10
15
ns
Write command to RAS lead time
tRWL
15
15
15
ns
Write command to CAS lead time
tCWL
13
15
15
ns
15
AC CHARACTERISTICS (0¡É¡ÂTA¡Â70¡É, See note 1,2)
Test condition (3.3V device) : VCC=3.3V¡¾0.3V, Vih/Vil=2.2/0.7V, Voh/Vol=2.0/0.8V
*1
Note) *1 : 5V only


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