K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
CMOS DRAM |
1M x 16Bit CMOS Dynamic RAM with Extended Data Out
DESCRIPTION
This is a family of 1,048,576 x 16 bit Extended Data Out CMOS DRAMs. Extended Data Out Mode offers high speed random access of memory cells within the same row, so called Hyper Page Mode. Power supply voltage (+5.0V or +3.3V), refresh cycle (1K Ref. or 4K Ref.), access time (-45, -50 or -60), power consumption(Normal or Low power) and package type(SOJ or TSOP-II) are optional features of this family. All of this family have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities. Furthermore, Selfrefresh operation is available in L-version. This 1Mx16 EDO Mode DRAM family is fabricated using Samsung′ s advanced CMOS process to realize high band-width, low power consumption and high reliability. It may be used as graphic memory unit for microcomputer, personal computer and portable machines.
FEATURES
•Part Identification
-K4E171611D-J(T) (5V, 4K Ref.)
-K4E151611D-J(T) (5V, 1K Ref.)
-K4E171612D-J(T) (3.3V, 4K Ref.)
-K4E151612D-J(T) (3.3V, 1K Ref.)
• Active Power Dissipation |
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Unit : mW |
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Speed |
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3.3V |
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5V |
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4K |
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1K |
4K |
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1K |
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-45 |
360 |
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540 |
550 |
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825 |
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-50 |
324 |
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504 |
495 |
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770 |
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-60 |
288 |
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468 |
440 |
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715 |
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• Extended Data Out Mode operation
(Fast Page Mode with Extended Data Out)
•2 CAS Byte/Word Read/Write operation
•CAS-before-RAS refresh capability
•RAS-only and Hidden refresh capability
•Self-refresh capability (L-ver only)
•TTL(5V)/LVTTL(3.3V) compatible inputs and outputs
•Early Write or output enable controlled write
•JEDEC Standard pinout
•Available in plastic SOJ 400mil and TSOP(II) packages
•Single +5V±10% power supply (5V product)
•Single +3.3V±0.3V power supply (3.3V product)
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Refresh Cycles |
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Part |
VCC |
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Refresh |
Refresh period |
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NO. |
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cycle |
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Nor- |
L-ver |
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K4E171611D |
5V |
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4K |
64ms |
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K4E171612D |
3.3V |
128ms |
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K4E151611D |
5V |
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1K |
16ms |
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K4E151612D |
3.3V |
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Performance Range |
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Speed |
tRAC |
tCAC |
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tRC |
tHPC |
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Remark |
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-45 |
45ns |
13ns |
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69ns |
16ns |
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5V/3.3V |
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-50 |
50ns |
15ns |
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84ns |
20ns |
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5V/3.3V |
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-60 |
60ns |
17ns |
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104ns |
25ns |
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5V/3.3V |
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FUNCTIONAL BLOCK DIAGRAM
RAS |
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Vcc |
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UCAS |
Control |
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Vss |
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LCAS |
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Clocks |
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VBB Generator |
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W |
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Lower |
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Data in |
DQ0 |
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Refresh Timer |
Row Decoder |
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Buffer |
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to |
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Refresh Control |
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I/O |
Lower |
DQ7 |
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Data out |
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& |
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Memory Array |
Buffer |
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Amps |
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OE |
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Refresh Counter |
1,048,576 x16 |
Upper |
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Cells |
Data in |
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Sense |
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DQ8 |
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A0-A11 |
Row Address Buffer |
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Buffer |
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to |
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(A0 - A9)*1 |
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Upper |
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DQ15 |
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A0 - A7 |
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Data out |
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Col. Address Buffer |
Column Decoder |
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(A0 - A9)*1 |
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Buffer |
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Note) *1 : 1K Refresh |
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SAMSUNG ELECTRONICS CO., LTD. reserves the right to change products and specifications without notice.
K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
CMOS DRAM |
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PIN CONFIGURATION |
(Top Views) |
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• K4E17(5)1611(2)D-J |
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• K4E17(5)1611(2)D-T |
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VCC |
1 |
42 |
VSS |
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VCC |
1 |
44 |
VSS |
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DQ0 |
2 |
41 |
DQ15 |
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DQ0 |
2 |
43 |
DQ15 |
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DQ1 |
3 |
40 |
DQ14 |
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DQ1 |
3 |
42 |
DQ14 |
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DQ2 |
4 |
39 |
DQ13 |
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DQ2 |
4 |
41 |
DQ13 |
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DQ3 |
5 |
38 |
DQ12 |
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DQ3 |
5 |
40 |
DQ12 |
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VCC |
6 |
39 |
VSS |
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VCC |
6 |
37 |
VSS |
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DQ4 |
7 |
38 |
DQ11 |
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DQ4 |
7 |
36 |
DQ11 |
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DQ5 |
8 |
37 |
DQ10 |
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DQ5 |
8 |
35 |
DQ10 |
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DQ6 |
9 |
36 |
DQ9 |
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DQ6 |
9 |
34 |
DQ9 |
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DQ7 |
10 |
35 |
DQ8 |
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DQ7 |
10 |
33 |
DQ8 |
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N.C |
11 |
34 |
N.C |
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N.C |
11 |
32 |
N.C |
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N.C |
12 |
33 |
N.C |
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N.C |
12 |
31 |
LCAS |
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W |
13 |
30 |
UCAS |
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N.C |
13 |
32 |
LCAS |
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RAS |
14 |
29 |
OE |
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W |
14 |
31 |
UCAS |
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*A11(N.C) |
15 |
28 |
A9 |
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RAS |
15 |
30 |
OE |
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*A11(N.C) |
16 |
29 |
A9 |
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*A10(N.C) |
16 |
27 |
A8 |
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*A10(N.C) |
17 |
28 |
A8 |
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A0 |
17 |
26 |
A7 |
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A0 |
18 |
27 |
A7 |
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A1 |
18 |
25 |
A6 |
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A1 |
19 |
26 |
A6 |
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A2 |
19 |
24 |
A5 |
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A2 |
20 |
25 |
A5 |
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A3 |
20 |
23 |
A4 |
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A3 |
21 |
24 |
A4 |
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VCC |
21 |
22 |
VSS |
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VCC |
22 |
23 |
VSS |
*A10 and A11 are N.C for K4E151611(2)D(5V/3.3V, 1K Ref. product)
J : 400mil 42 SOJ
T : 400mil 50(44) TSOP II
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Pin Name |
Pin Function |
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A0 - A11 |
Address Inputs (4K Product) |
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A0 - A9 |
Address Inputs (1K Product) |
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DQ0 - 15 |
Data In/Out |
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VSS |
Ground |
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Row Address Strobe |
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RAS |
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Upper Column Address Strobe |
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UCAS |
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Lower Column Address Strobe |
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LCAS |
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Read/Write Input |
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W |
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Data Output Enable |
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OE |
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VCC |
Power(+5V) |
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Power(+3.3V) |
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N.C |
No Connection |
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K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
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CMOS DRAM |
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ABSOLUTE MAXIMUM RATINGS |
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Parameter |
Symbol |
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Rating |
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Units |
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3.3V |
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5V |
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Voltage on any pin relative to VSS |
VIN,VOUT |
-0.5 |
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+4.6 |
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-1.0 |
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+7.0 |
V |
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Voltage on VCC supply relative to VSS |
VCC |
-0.5 |
to |
+4.6 |
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-1.0 |
to |
+7.0 |
V |
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Storage Temperature |
Tstg |
-55 |
to |
+150 |
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-55 |
to |
+150 |
°C |
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Power Dissipation |
PD |
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1 |
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1 |
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W |
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Short Circuit Output Current |
IOS Address |
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50 |
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50 |
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mA |
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*Permanent device damage may occur if "ABSOLUTE MAXIMUM RATINGS" are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS (Voltage referenced to Vss, TA= 0 to 70°C)
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Parameter |
Symbol |
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3.3V |
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5V |
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Units |
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Min |
Typ |
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Max |
Min |
Typ |
Max |
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Supply Voltage |
VCC |
3.0 |
3.3 |
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3.6 |
4.5 |
5.0 |
5.5 |
V |
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Ground |
VSS |
0 |
0 |
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0 |
0 |
0 |
0 |
V |
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Input High Voltage |
VIH |
2.0 |
- |
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VCC+0.3*1 |
2.4 |
- |
VCC+1.0*1 |
V |
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Input Low Voltage |
VIL |
-0.3*2 |
- |
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0.8 |
-1.0*2 |
- |
0.8 |
V |
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*1 |
: VCC+1.3V/15ns(3.3V), VCC+2.0V/20ns(5V), Pulse width is measured at VCC |
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*2 |
: -1.3V/15ns(3.3V), -2.0V/20ns(5V), Pulse width is measured at VSS |
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DC AND OPERATING CHARACTERISTICS (Recommended operating conditions unless otherwise noted.)
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Max |
Parameter |
Symbol |
Min |
Max |
Units |
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Input Leakage Current (Any input 0≤VIN≤VIN+0.3V, |
II(L) |
-5 |
5 |
uA |
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all other input pins not under test=0 Volt) |
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3.3V |
Output Leakage Current |
IO(L) |
-5 |
5 |
uA |
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(Data out is disabled, 0V≤VOUT≤VCC) |
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Output High Voltage Level(IOH=-2mA) |
VOH |
2.4 |
- |
V |
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Output Low Voltage Level(IOL=2mA) |
VOL |
- |
0.4 |
V |
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Input Leakage Current (Any input 0≤VIN≤VIN+0.5V, |
II(L) |
-5 |
5 |
uA |
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all other input pins not under test=0 Volt) |
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5V |
Output Leakage Current |
IO(L) |
-5 |
5 |
uA |
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(Data out is disabled, 0V≤VOUT≤VCC) |
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Output High Voltage Level(IOH=-5mA) |
VOH |
2.4 |
- |
V |
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Output Low Voltage Level(IOL=4.2mA) |
VOL |
- |
0.4 |
V |
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K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
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CMOS DRAM |
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DC AND OPERATING CHARACTERISTICS (Continued) |
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Symbol |
Power |
Speed |
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Max |
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Units |
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K4E171612D |
K4E151612D |
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K4E171611D |
K4E151611D |
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-45 |
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100 |
150 |
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100 |
150 |
mA |
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ICC1 |
Don′t care |
-50 |
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90 |
140 |
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90 |
140 |
mA |
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-60 |
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80 |
130 |
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80 |
130 |
mA |
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ICC2 |
Normal |
Don′t care |
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1 |
1 |
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2 |
2 |
mA |
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L |
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1 |
1 |
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1 |
1 |
mA |
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-45 |
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100 |
150 |
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100 |
150 |
mA |
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ICC3 |
Don′t care |
-50 |
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90 |
140 |
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90 |
140 |
mA |
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-60 |
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80 |
130 |
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80 |
130 |
mA |
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-45 |
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110 |
110 |
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110 |
110 |
mA |
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ICC4 |
Don′t care |
-50 |
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100 |
100 |
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100 |
100 |
mA |
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-60 |
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90 |
90 |
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90 |
90 |
mA |
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ICC5 |
Normal |
Don′t care |
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0.5 |
0.5 |
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1 |
1 |
mA |
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L |
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200 |
200 |
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200 |
200 |
uA |
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-45 |
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100 |
150 |
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110 |
150 |
mA |
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ICC6 |
Don′t care |
-50 |
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90 |
140 |
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90 |
140 |
mA |
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-60 |
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80 |
130 |
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80 |
130 |
mA |
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ICC7 |
L |
Don′t care |
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300 |
200 |
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350 |
250 |
uA |
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ICCS |
L |
Don′t care |
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150 |
150 |
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200 |
200 |
uA |
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ICC1* : Operating Current (RAS and UCAS, LCAS, Address cycling @tRC=min.)
ICC2 : Standby Current (RAS=UCAS=LCAS=W=VIH)
ICC3* : RAS-only Refresh Current (UCAS=LCAS=VIH, RAS, Address cycling @tRC=min.)
ICC4* : Hyper Page Mode Current (RAS=VIL, UCAS or LCAS, Address cycling @tHPC=min.)
ICC5 : Standby Current (RAS=UCAS=LCAS=W=VCC-0.2V)
ICC6* : CAS-Before-RAS Refresh Current (RAS, UCAS or LCAS cycling @tRC=min.)
ICC7 : Battery back-up current, Average power supply current, Battery back-up mode
Input high voltage(VIH)=VCC-0.2V, Input low voltage(VIL)=0.2V, UCAS, LCAS=0.2V,
DQ=Don′t care, TRC=31.25us(4K/L-ver), 125us(1K/L-ver)
TRAS=TRASmin~300ns
ICCS : Self Refresh Current
RAS=UCAS=LCAS=VIL, W=OE=A0 ~ A11=VCC-0.2V or 0.2V,
DQ0 ~ DQ15=VCC-0.2V, 0.2V or Open
*Note : ICC1, ICC3, ICC4 and ICC6 are dependent on output loading and cycle rates. Specified values are obtained with the output open. ICC is specified as an average current. In ICC1, ICC3 and ICC6, address can be changed maximum once while RAS=VIL. In ICC4, address can be changed maximum once within one Hyper page mode cycle time, tHPC.
K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
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CMOS DRAM |
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CAPACITANCE (TA=25°C, VCC=5V or 3.3V, f=1MHz) |
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Parameter |
Symbol |
Min |
Max |
Units |
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Input capacitance [A0 ~ A11] |
CIN1 |
- |
5 |
pF |
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Input capacitance |
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CIN2 |
- |
7 |
pF |
[RAS, |
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UCAS, |
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LCAS, |
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W, |
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OE] |
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Output capacitance [DQ0 - DQ15] |
CDQ |
- |
7 |
pF |
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AC CHARACTERISTICS (0°C≤TA≤70°C, See note 1,2)
Test condition (5V device) : VCC=5.0V±10%, Vih/Vil=2.4/0.8V, Voh/Vol=2.0/0.8V
Test condition (3.3V device) : VCC=3.3V±0.3V, Vih/Vil=2.2/0.7V, Voh/Vol=2.0/0.8V
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Parameter |
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Symbol |
-45 |
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-50 |
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-60 |
Units |
Notes |
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Min |
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Max |
Min |
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Max |
Min |
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Max |
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Random read or write cycle time |
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tRC |
79 |
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84 |
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104 |
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ns |
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Read-modify-write cycle time |
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tRWC |
105 |
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115 |
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140 |
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ns |
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Access time from |
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tRAC |
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45 |
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50 |
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60 |
ns |
3,4,10 |
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RAS |
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Access time from |
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tCAC |
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14 |
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15 |
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17 |
ns |
3,4,5 |
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CAS |
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Access time from column address |
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tAA |
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23/*20 |
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25 |
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30 |
ns |
3,10 |
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to output in Low-Z |
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tCLZ |
3 |
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3 |
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3 |
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ns |
3 |
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CAS |
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Output buffer turn-off delay from |
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tCEZ |
3 |
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13 |
3 |
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13 |
3 |
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15 |
ns |
6,19 |
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CAS |
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to output in Low-Z |
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tOLZ |
3 |
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3 |
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3 |
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ns |
3 |
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OE |
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Transition time (rise and fall) |
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tT |
2 |
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50 |
2 |
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50 |
2 |
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50 |
ns |
2 |
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precharge time |
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tRP |
30 |
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30 |
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40 |
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ns |
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RAS |
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pulse width |
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tRAS |
45 |
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10K |
50 |
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10K |
60 |
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10K |
ns |
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RAS |
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hold time |
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tRSH |
13 |
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13 |
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17 |
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ns |
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RAS |
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hold time |
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tCSH |
36 |
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40 |
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50 |
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ns |
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CAS |
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pulse width |
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tCAS |
7 / *6.5 |
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10K |
8 |
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10K |
10 |
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10K |
ns |
18 |
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CAS |
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to |
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delay time |
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tRCD |
19 |
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31 |
20 |
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35 |
20 |
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43 |
ns |
4 |
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RAS |
CAS |
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to column address delay time |
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tRAD |
14 |
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22 |
15 |
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25 |
15 |
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30 |
ns |
10 |
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RAS |
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to |
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precharge time |
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tCRP |
5 |
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5 |
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5 |
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ns |
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CAS |
RAS |
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Row address set-up time |
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tASR |
0 |
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0 |
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0 |
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ns |
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Row address hold time |
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tRAH |
9 |
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10 |
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10 |
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ns |
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Column address set-up time |
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tASC |
0 |
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0 |
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0 |
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ns |
11 |
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Column address hold time |
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tCAH |
7 |
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8 |
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10 |
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ns |
11 |
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Column address to |
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lead time |
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tRAL |
23 |
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25 |
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30 |
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ns |
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RAS |
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Read command set-up time |
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tRCS |
0 |
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0 |
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0 |
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ns |
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Read command hold time referenced to |
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tRCH |
0 |
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0 |
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0 |
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ns |
8 |
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CAS |
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Read command hold time referenced to |
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tRRH |
0 |
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0 |
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0 |
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ns |
8 |
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RAS |
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Write command hold time |
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tWCH |
8 |
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10 |
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10 |
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ns |
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Write command pulse width |
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tWP |
8 |
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10 |
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10 |
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ns |
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Write command to |
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lead time |
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tRWL |
10 |
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13 |
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15 |
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ns |
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RAS |
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Write command to |
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lead time |
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tCWL |
7 |
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8 |
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10 |
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ns |
14 |
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CAS |
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* KM416C1204DT-45 (5V, 1K Refresh) only
K4E171611D, K4E151611D |
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K4E171612D, K4E151612D |
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CMOS DRAM |
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AC CHARACTERISTICS (Continued) |
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Parameter |
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Symbol |
-45 |
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-50 |
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-60 |
Units |
Notes |
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Min |
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Max |
Min |
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Max |
Min |
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Max |
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Data set-up time |
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tDS |
0 |
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0 |
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0 |
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ns |
9,17 |
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Data hold time |
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tDH |
7 |
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8 |
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10 |
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ns |
9,17 |
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Refresh period (1K, Normal) |
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tREF |
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16 |
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16 |
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16 |
ms |
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Refresh period (4K, Normal) |
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tREF |
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64 |
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64 |
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64 |
ms |
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Refresh period (L-ver) |
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tREF |
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128 |
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128 |
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128 |
ms |
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Write command set-up time |
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tWCS |
0 |
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0 |
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0 |
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ns |
7 |
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to |
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delay time |
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tCWD |
28 |
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32 |
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36 |
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ns |
7,13 |
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CAS |
W |
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to |
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delay time |
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tRWD |
59 |
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67 |
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79 |
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ns |
7 |
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RAS |
W |
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Column address |
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delay time |
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tAWD |
37 |
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42 |
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49 |
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ns |
7 |
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|||||||||||||||||||||||||||||||||
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W |
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||||||||||||||||||||||||||||||||||||||||||||||
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precharge to |
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delay time |
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tCPWD |
39 |
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|
47 |
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|
54 |
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ns |
7 |
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||||||||||||||||||||||||||||||
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CAS |
W |
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set-up time |
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-before- |
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refresh) |
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tCSR |
5 |
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|
5 |
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5 |
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ns |
15 |
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||||||||||||||||||
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CAS |
(CAS |
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RAS |
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hold time |
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-before- |
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refresh) |
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tCHR |
10 |
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10 |
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10 |
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ns |
16 |
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|||||||||||||||||||
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CAS |
(CAS |
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RAS |
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to |
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precharge time |
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tRPC |
5 |
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5 |
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5 |
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ns |
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RAS |
CAS |
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Access time from |
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precharge |
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tCPA |
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25 |
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28 |
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35 |
ns |
3 |
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CAS |
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Hyper Page mode cycle time |
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tHPC |
18 |
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20 |
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25 |
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ns |
18 |
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|||||||||||||||||||||||||||||||||||||||||
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Hyper Page read-modify-write cycle time |
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tHPRWC |
39 |
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47 |
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56 |
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ns |
18 |
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|||||||||||||||||||||||||||||||||||||||||
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precharge time (Hyper Page cycle) |
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tCP |
7 / *6.5 |
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8 |
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10 |
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ns |
12 |
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CAS |
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pulse width (Hyper Page cycle) |
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tRASP |
45 |
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200K |
50 |
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200K |
60 |
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200K |
ns |
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RAS |
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hold time from |
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precharge |
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tRHCP |
27 |
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30 |
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35 |
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ns |
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RAS |
CAS |
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access time |
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tOEA |
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13 |
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13 |
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15 |
ns |
3 |
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OE |
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to data delay |
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tOED |
10 |
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13 |
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15 |
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ns |
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OE |
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Output buffer turn off delay time from |
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tOEZ |
3 |
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13 |
3 |
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13 |
3 |
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15 |
ns |
6 |
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|||||||||||||||||||||||||||||||||||||||
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OE |
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command hold time |
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tOEH |
10 |
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13 |
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15 |
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ns |
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OE |
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Output data hold time |
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tDOH |
4 |
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5 |
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5 |
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ns |
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Output buffer turn off delay from |
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tREZ |
3 |
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13 |
3 |
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13 |
3 |
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15 |
ns |
6,19 |
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RAS |
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Output buffer turn off delay from |
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tWEZ |
3 |
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13 |
3 |
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13 |
3 |
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15 |
ns |
6 |
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|||||||||||||||||||||||||||||||||
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W |
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|||||||||||||||||||||||||||||||||||||||||||||||||
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to data delay |
|
tWED |
15 |
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|
15 |
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15 |
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ns |
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|||||||||||||||||||||||||||||||||||||||
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W |
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to |
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hold time |
|
tOCH |
5 |
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|
5 |
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5 |
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ns |
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||||||||||||||||||||||||||||||||||
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OE |
CAS |
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hold time to |
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tCHO |
5 |
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5 |
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5 |
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ns |
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||||||||
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CAS |
OE |
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||||||||||||||||||||||||||||||||||||||
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precharge time |
|
tOEP |
5 |
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|
5 |
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5 |
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ns |
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||||||||||||||||||||||||||||||||||||||
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OE |
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pulse width (Hyper Page Cycle) |
|
tWPE |
5 |
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|
5 |
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|
5 |
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ns |
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|||||||||||||||||||||||||||||||||||||||
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W |
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|
-B- |
|
|
self refresh) |
|
tRASS |
100 |
|
|
100 |
|
|
100 |
|
|
us |
20,21,22 |
|
||||||||||||||||||||
|
|
RAS |
pulse width (C |
R |
|
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|||||||||||||||||||||||||||||||||||||||||||||
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|
|
-B- |
|
self refresh) |
|
tRPS |
79 |
|
|
90 |
|
|
110 |
|
|
ns |
20,21,22 |
|
||||||||||||
|
|
RAS |
precharge time (C |
R |
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-B- |
|
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|
|
self refresh) |
|
tCHS |
-50 |
|
|
-50 |
|
|
-50 |
|
|
ns |
20,21,22 |
|
||||||||||||||||||||||||
|
|
CAS |
hold time (C |
R |
|
|
|
|
|
|
|
|
|||||||||||||||||||||||||||||||||||||||||||||
|
* KM416C1204DT-45 (5V, 1K Refresh) only |
|
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K4E171611D, K4E151611D |
|
K4E171612D, K4E151612D |
CMOS DRAM |
NOTES
1.An initial pause of 200us is required after power-up followed by any 8 RAS-only refresh or CAS-before-RAS refresh cycles before proper device operation is achieved.
2.Input voltage levels are Vih/Vil. VIH(min) and VIL(max) are reference levels for measuring timing of input signals. Transition times are measured between VIH(min) and VIL(max) and are assumed to be 2ns for all inputs.
3.Measured with a load equivalent to 2 TTL(5V)/1TTL(3.3V) loads and 100pF.
4.Operation within the tRCD(max) limit insures that tRAC(max) can be met. tRCD(max) is specified as a reference point only. If tRCD is greater than the specified tRCD(max) limit, then access time is controlled exclusively by tCAC.
5.Assumes that tRCD³tRCD(max).
6.This parameter defines the time at which the output achieves the open circuit condition and is not referenced to Voh or Vol.
7.tWCS, tRWD, tCWD, tAWD and tCPWD are non restrictive operating parameters. They are included in the data sheet as electrical characteristics only. If tWCS³tWCS(min), the cycle is an early write cycle and the data output will remain high impedance for the duration of the cycle. If tCWD³tCWD(min), tRWD³tRWD(min), tAWD³tAWD(min) and tCPWD³tCPWD(min), then the cycle is a read- modify-write cycle and the data output will contain the data read from the selected address. If neither of the above conditions is satisfied, the condition of the data out is indeterminate.
8.Either tRCH or tRRH must be satisfied for a read cycle.
9.These parameters are referenced to CAS falling edge in early write cycles and to W falling edge in OE controlled write cycle and read-modify-write cycles.
10.Operation within the tRAD(max) limit insures that tRAC(max) can be met. tRAD(max) is specified as a reference point only. If tRAD is greater than the specified tRAD(max) limit, then access time is controlled by tAA.
K4E17(5)1611(2)D Truth Table
RAS |
LCAS |
UCAS |
W |
OE |
DQ0 - DQ7 |
DQ8-DQ15 |
STATE |
|
|
|
|
|
|
|
|
H |
X |
X |
X |
X |
Hi-Z |
Hi-Z |
Standby |
|
|
|
|
|
|
|
|
L |
H |
H |
X |
X |
Hi-Z |
Hi-Z |
Refresh |
|
|
|
|
|
|
|
|
L |
L |
H |
H |
L |
DQ-OUT |
Hi-Z |
Byte Read |
|
|
|
|
|
|
|
|
L |
H |
L |
H |
L |
Hi-Z |
DQ-OUT |
Byte Read |
|
|
|
|
|
|
|
|
L |
L |
L |
H |
L |
DQ-OUT |
DQ-OUT |
Word Read |
|
|
|
|
|
|
|
|
L |
L |
H |
L |
H |
DQ-IN |
- |
Byte Write |
|
|
|
|
|
|
|
|
L |
H |
L |
L |
H |
- |
DQ-IN |
Byte Write |
|
|
|
|
|
|
|
|
L |
L |
L |
L |
H |
DQ-IN |
DQ-IN |
Word Write |
|
|
|
|
|
|
|
|
L |
L |
L |
H |
H |
Hi-Z |
Hi-Z |
- |
|
|
|
|
|
|
|
|
K4E171611D, K4E151611D |
|
K4E171612D, K4E151612D |
CMOS DRAM |
11.tASC, tCAH are referenced to the earlier CAS falling edge.
12.tCP is specified from the later CAS rising edge in the previous cycle to the earlier CAS falling edge in the next cycle.
13.tCWD is referenced to the later CAS falling edge at word read-modify-write cycle.
14.tCWL is specified from W falling edge to the earlier CAS rising edge.
15.tCSR is referenced to the earlier CAS falling edge before RAS transition low.
16.tCHR is referenced to the later CAS rising edge after RAS transition low.
RAS
LCAS
UCAS
tCSR tCHR
17.tDS, tDH is independently specified for lower byte DQ(0-7), upper byte DQ(8-15)
18.tASC³6ns, assume tT=2.0ns.
19.If RAS goes to high before CAS high going, the open circuit condition of the output is achieved by CAS high going. If CAS goes to high before RAS high going, the open circuit condition of the output is achieved by RAS high going.
20.If tRASS³100us, then RAS precharge time must use tRPS instead of tRP.
21.For RAS-only refresh and burst CAS-before-RAS refresh mode, 4096(4K)/1024(1K) cycles of burst refresh must be executed within 64ms/16ms before and after self refresh, in order to meet refresh specification.
22.For distributed CAS-before-RAS with 15.6us interval, CAS-before-RAS refresh should be executed with in 15.6us immediately before and after self refresh in order to meet refresh specification.
K4E171611D, K4E151611D |
|
K4E171612D, K4E151612D |
CMOS DRAM |
|
|
WORD READ CYCLE |
|
|
|
|
|
tRC |
tRP |
VIH - |
|
|
|
tRAS |
|
|
|
|
|
|
|
RAS |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
tCRP |
|
|
tCSH |
tCRP |
|
|
tRCD |
tRSH |
||
|
|
|
|
||
VIH - |
|
|
|
tCAS |
|
UCAS |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
tCRP |
|
|
tCSH |
tCRP |
|
|
tRCD |
tRSH |
||
|
|
|
|
||
VIH - |
|
|
|
tCAS |
|
LCAS |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
|
|
tRAD |
tRAL |
|
|
tASR |
tRAH |
tASC |
|
|
|
tCAH |
|
|||
|
|
|
|
|
|
VIH - |
ROW |
|
|
COLUMN |
|
A |
|
|
|
||
ADDRESS |
|
ADDRESS |
|
||
VIL - |
|
|
|||
|
|
|
tRCS |
|
tRCH |
|
|
|
|
tRRH |
|
|
|
|
|
|
|
VIH - |
|
|
|
|
|
W |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
|
|
|
tAA |
|
VIH - |
|
|
|
tOLZ |
|
|
|
|
tOEA |
|
|
OE |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
|
|
|
tCAC |
tCEZ |
DQ0 ~ DQ7 |
|
|
tRAC |
tCLZ |
tOEZ |
|
|
|
|||
VOH - |
|
OPEN |
|
DATA-OUT |
|
VOL - |
|
|
|||
|
|
|
tCAC |
tCEZ |
|
|
|
|
|
||
DQ8 ~ DQ15 |
|
|
tRAC |
tCLZ |
tOEZ |
|
|
|
|||
VOH - |
|
|
|
|
|
|
OPEN |
|
DATA-OUT |
||
VOL - |
|
|
|||
|
|
|
|
|
Don′t care
Undefined
K4E171611D, K4E151611D |
|
K4E171612D, K4E151612D |
CMOS DRAM |
LOWER BYTE READ CYCLE
NOTE : DIN = OPEN
|
|
|
|
tRC |
|
|
|
|
|
tRAS |
tRP |
VIH - |
|
|
|
|
|
RAS |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
tCRP |
|
|
|
tRPC |
VIH - |
|
|
|
|
|
UCAS |
|
|
|
|
|
VIL - |
|
|
|
|
|
|
tCRP |
|
|
tCSH |
|
|
|
tRCD |
tRSH |
|
|
|
|
|
|
||
VIH - |
|
|
|
tCAS |
|
LCAS |
|
|
|
|
|
VIL - |
|
|
tRAD |
|
|
|
|
|
|
|
|
|
tASR |
tRAH |
tASC |
tRAL |
|
|
tCAH |
|
|||
|
|
|
|
|
|
VIH - |
ROW |
|
|
COLUMN |
|
A |
|
|
|
||
ADDRESS |
|
ADDRESS |
|
||
VIL - |
|
|
|||
|
|
|
tRCS |
|
tRCH |
|
|
|
|
tRRH |
|
|
|
|
|
|
|
VIH - |
|
|
|
|
|
W |
|
|
|
|
|
VIL - |
|
|
|
|
tCEZ |
|
|
|
|
|
|
|
|
|
|
tAA |
tOEZ |
|
|
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VIH - |
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tOEA |
|
OE |
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VIL - |
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tCAC |
|
DQ0 ~ DQ7 |
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tRAC |
tCLZ |
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||
VOH - |
|
OPEN |
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DATA-OUT |
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VOL - |
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tOLZ
DQ8 ~ DQ15
VOH -
OPEN
VOL -
Don′t care
Undefined
K4E171611D, K4E151611D |
|
K4E171612D, K4E151612D |
CMOS DRAM |
UPPER BYTE READ CYCLE
NOTE : DIN = OPEN
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tRAS |
tRC |
tRP |
VIH - |
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||
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RAS |
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VIL - |
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tCSH |
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tCRP |
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tRCD |
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tRSH |
tCRP |
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VIH - |
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tCAS |
|
UCAS |
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VIL - |
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tCRP |
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tRPC |
VIH - |
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LCAS |
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tRAD |
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VIL - |
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tRAL |
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tASR |
tRAH |
tASC |
tCAH |
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VIH - |
ROW |
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COLUMN |
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A |
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||
ADDRESS |
|
ADDRESS |
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VIL - |
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|||
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tRCS |
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tRCH |
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tRRH |
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VIH - |
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W |
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VIL - |
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tCEZ |
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tAA |
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tOEZ |
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VIH - |
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tOEA |
|
OE |
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VIL - |
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|
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|
|
|
DQ0 ~ DQ7 |
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|
|
|
tOLZ |
|
|
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VOH - |
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OPEN |
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VOL - |
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|
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|
tCAC |
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||
|
|
|
|
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||
DQ8 ~ DQ15 |
|
|
tRAC |
tCLZ |
|
|
|
|
|
|
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||
VOH - |
|
OPEN |
|
|
DATA-OUT |
|
VOL - |
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|||
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|
Don′t care
Undefined