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KM41C4000D Datasheet(PDF) 6 Page - Samsung semiconductor

Part No. KM41C4000D
Description  4M x 1Bit CMOS Dynamic RAM with Fast Page Mode
Download  20 Pages
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Maker  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
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KM41C4000D Datasheet(HTML) 6 Page - Samsung semiconductor

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KM41C4000D, KM41V4000D
CMOS DRAM
AC CHARACTERISTICS (0
°C
≤TA≤70°C, See note 2)
Note) *1 : 5V only
Parameter
Symbol
-5*1
-6
-7
Units
Notes
Min
Max
Min
Max
Min
Max
Data set-up time
tDS
0
0
0
ns
9
Data hold time
tDH
10
10
15
ns
9
Refresh period (Normal)
tREF
16
16
16
ms
Refresh period (L-ver)
tREF
128
128
128
ms
Write command set-up time
tWCS
0
0
0
ns
7
CAS to W delay time
tCWD
15
15
20
ns
7
RAS to W delay time
tRWD
50
60
70
ns
7
Column address to W delay time
tAWD
25
30
35
ns
7
CAS precharge to W delay time
tCPWD
30
35
40
ns
7
CAS set-up time (CAS-before-RAS refresh)
tCSR
10
10
10
ns
CAS hold time (CAS-before-RAS refresh)
tCHR
10
10
15
ns
RAS to CAS precharge time
tRPC
5
5
5
ns
CAS precharge time (C-B-R counter test cycle)
tCPT
20
20
25
ns
Access time from CAS precharge
tCPA
30
35
40
ns
3
Fast Page mode cycle time
tPC
35
40
45
ns
Fast Page read-modify-write cycle time
tPRWC
53
60
70
ns
CAS precharge time (Fast Page cycle)
tCP
10
10
10
ns
RAS pulse width (Fast Page cycle)
tRASP
50
200K
60
200K
70
200K
ns
RAS hold time from CAS precharge
tRHCP
30
35
40
ns
Write command set-up time (Test mode in)
tWTS
10
10
10
ns
Write command hold time (Test mode in)
tWTH
10
10
10
ns
W to RAS precharge time (C-B-R refresh)
tWRP
10
10
10
ns
W to RAS hold time (C-B-R refresh)
tWRH
10
10
10
ns
RAS pulse width (C-B-R self refresh)
tRASS
100
100
100
us
14,15,16
RAS precharge time (C-B-R self refresh)
tRPS
90
110
130
ns
14,15,16
CAS Hold time (C-B-R self refresh)
tCHS
-50
-50
-50
ns
14,15,16


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