MSM5416258A-45TS-K [OKI]

EDO DRAM, 256KX16, 45ns, CMOS, PDSO40, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44/40;
MSM5416258A-45TS-K
型号: MSM5416258A-45TS-K
厂家: OKI ELECTRONIC COMPONETS    OKI ELECTRONIC COMPONETS
描述:

EDO DRAM, 256KX16, 45ns, CMOS, PDSO40, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44/40

动态存储器 光电二极管 内存集成电路
文件: 总22页 (文件大小:361K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
E2L0047-28-Z2  
This version: Dec. 1998  
Previous version: Jan. 1998  
¡ Semiconductor  
MSM5416258A  
262,144-Word ¥ 16-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO  
DESCRIPTION  
The MSM5416258A is a 262,144-word ¥ 16-bit dynamic RAM fabricated in Oki's CMOS silicon gate  
technology. The MSM5416258A achieves high integration, high-speed operation, and low-power  
consumption because Oki manufactures the device in a quadruple-layer polysilicon/double-layer  
metal CMOS process. The MSM5416258A is available in a 44/40-pin plastic TSOP.  
FEATURES  
• 262,144-word ¥ 16-bit configuration  
• Single 5.0 V power supply, ±0.5 V tolerance  
• Input:  
TTL compatible  
• Output: TTL compatible, 3-state  
• Refresh: 512 cycles/8 ms  
• Fast page mode with EDO, read modify write capability  
• Byte wide control: 2 CAS control  
CAS before RAS refresh, hidden refresh, RAS only refresh capability  
• Package :  
44/40-pin 400 mil plastic TSOP (Type II) (TSOPII44/40-P-400-0.80-K) (Product : MSM5416258A-xxTS-K)  
xx indicates speed rank.  
PRODUCT FAMILY  
Power Dissipation  
(Max.)  
Access Time (Max.)  
tRAC tAA tCAC tOEA  
40 ns 22 ns 10 ns 10 ns  
45 ns 24 ns 12 ns 12 ns  
Cycle Time (Min.)  
Family  
tRC  
tHPC  
15 ns  
20 ns  
MSM5416258A-40  
MSM5416258A-45  
80 ns  
90 ns  
825 mW  
770 mW  
1/21  
¡ Semiconductor  
MSM5416258A  
PIN CONFIGURATION (TOP VIEW)  
VCC  
1
44 VSS  
DQ0 2  
DQ1 3  
DQ2 4  
DQ3 5  
43 DQ15  
42 DQ14  
41 DQ13  
40 DQ12  
39 VSS  
VCC  
6
DQ4 7  
DQ5 8  
DQ6 9  
DQ7 10  
38 DQ11  
37 DQ10  
36 DQ9  
35 DQ8  
VSS* 13  
32 VSS*  
NC 14  
31 LCAS  
30 UCAS  
29 OE  
28 A8  
WE 15  
RAS 16  
NC 17  
A0 18  
A1 19  
A2 20  
A3 21  
VCC 22  
27 A7  
26 A6  
25 A5  
24 A4  
23 VSS  
44/40-Pin Plastic TSOP (II)  
(K Type)  
Pin Name  
A0 - A8  
RAS  
Function  
Address Input  
Row Address Strobe  
LCAS, UCAS  
DQ0 - DQ15  
WE  
Column Address Strobe  
Data - Input / Data - Output  
Write Enable  
OE  
Output Enable  
VCC  
Power Supply (5.0 V)  
Ground (0 V)  
VSS  
NC  
No Connection  
VSS  
*
Ground (0 V)*  
Note: The same power supply voltage must be provided to every V pin, and the same GND  
CC  
voltage level must be provided to every V pin.  
SS  
*:  
For improved signal integrity, it is recommended to connect the V * pins, pin 13 and pin 32,  
to GND: the pins are electrically connected to internal GND.  
SS  
2/21  
¡ Semiconductor  
BLOCK DIAGRAM  
OE  
MSM5416258A  
WE  
Timing  
RAS  
Generator  
I/O  
Controller  
LCAS  
UCAS  
I/O  
Controller  
Output  
Buffers  
8
8
8
DQ0 - DQ7  
Column  
Address  
Buffers  
Input  
Buffers  
9
Column Decoders  
Sense Amplifiers  
9
8
I/O  
Selector  
Internal  
Address  
Counter  
16  
16  
Refresh  
Control Clock  
A0 - A8  
Input  
Buffers  
8
8
8
Row  
Address  
Buffers  
Row  
Deco-  
ders  
9
9
Word  
Drivers  
Memory  
Cells  
DQ8 - DQ15  
Output  
Buffers  
8
VCC  
On-chip  
BB Generator  
V
VSS  
FUNCTION TABLE  
Input Pin  
DQ Pin  
Function Mode  
RAS  
LCAS  
UCAS  
WE  
OE  
*
DQ0 - DQ7  
High-Z  
High-Z  
DOUT  
DQ8 - DQ15  
High-Z  
High-Z  
High-Z  
DOUT  
Standby  
Refresh  
H
L
L
L
L
L
L
L
L
*
H
L
H
L
L
H
L
L
*
H
H
L
L
H
L
L
L
*
*
*
Lower Byte Read  
Upper Byte Read  
Word Read  
H
H
H
L
L
L
H
L
High-Z  
DOUT  
L
DOUT  
L
H
H
H
H
DIN  
Don't Care  
DIN  
Lower Byte Write  
Upper Byte Write  
Word Write  
Don't Care  
DIN  
DIN  
High-Z  
High-Z  
* : "H" or "L"  
3/21  
¡ Semiconductor  
MSM5416258A  
ELECTRICAL CHARACTERISTICS  
Absolute Maximum Ratings  
Parameter  
Voltage on Any Pin Relative to VSS  
Short Circuit Output Current  
Power Dissipation  
Symbol  
VT  
Condition  
Ta = 25°C  
Ta = 25°C  
Ta = 25°C  
Rating  
–1.0 to 7.0  
50  
Unit  
V
IOS  
mA  
W
PD  
1
Operating Temperature  
Storage Temperature  
Topr  
Tstg  
0 to 70  
–55 to 150  
°C  
°C  
Recommended Operating Conditions  
(Ta = 0°C to 70°C)  
Parameter  
Symbol  
VCC  
Min.  
4.5  
0
Typ.  
5.0  
0
Max.  
Unit  
V
5.5  
0
Power Supply Voltage  
VSS  
V
Input High Voltage  
Input Low Voltage  
VIH  
2.4  
–1.0  
VCC + 1.0  
0.8  
V
V
VIL  
Capacitance  
(VCC = 5.0 V 0.5 V, Ta = 25°C, f = 1 MHꢀ)  
Parameter  
Symbol  
Typ.  
Max.  
Unit  
Input Capacitance (A0 - A8)  
CIN1  
5
pF  
Input Capacitance  
(RAS, LCAS, UCAS, WE, OE)  
CIN2  
CI/O  
7
7
pF  
pF  
Input / Output Capacitance  
(DQ0 - DQ15)  
4/21  
¡ Semiconductor  
MSM5416258A  
DC Characteristics  
(VCC = 5.0 V 0.5 V, Ta = 0°C to 70°C)  
MSM5416258A  
-40  
MSM5416258A  
-45  
Parameter  
Symbol  
Condition  
UnitNote  
Min.  
2.4  
0
Max.  
VCC  
0.4  
Min.  
2.4  
0
Max.  
VCC  
0.4  
Output High Voltage  
Output Low Voltage  
Input Leakage Current  
VOH  
VOL  
ILI  
I
OH = –2.5 mA  
V
V
IOL = 2.0 mA  
0 V £ VI £ VCC  
–10  
10  
–10  
10  
mA  
DQi Disable  
0 V £ VO £ 5.5 V  
Output Leakage Current  
ILO  
–10  
10  
–10  
10  
mA  
Average Power  
Supply Current  
(Operating)  
RAS, CAS Cycling,  
1, 2  
1
ICC1  
ICC2  
ICC3  
150  
140  
mA  
mA  
mA  
tRC = Min.  
Power Supply  
Current (Standby)  
RAS, CAS = VIH  
3
3
Average Power  
Supply Current  
(RAS Only Refresh)  
RAS = Cycling,  
CAS = VIH,  
1, 2  
150  
140  
tRC = Min.  
Average Power  
Supply Current  
(Fast Page Mode)  
RAS = VIL,  
1, 3  
1, 2  
ICC4  
130  
150  
115  
140  
mA  
mA  
CAS Cycling,  
t
HPC = Min.  
Average Power  
Supply Current  
(CAS before RAS Refresh)  
RAS = Cycling,  
CAS before RAS  
ICC5  
Notes : 1. I Max. is specified as I for output open condition.  
CC  
CC  
2. The address can be changed once or less while RAS = V .  
IL  
3. The address can be changed once or less while CAS = V  
.
IH  
5/21  
¡ Semiconductor  
AC Characteristics (1/2)  
Parameter  
MSM5416258A  
(VCC = 5.0 V ±0.5 V, Ta = 0°C to 70°C)  
MSM5416258A  
-40  
MSM5416258A  
-45  
Symbol  
Unit Note  
Min.  
80  
115  
15  
55  
0
Max.  
40  
10  
22  
10  
22  
8
Min.  
90  
130  
20  
60  
0
Max.  
45  
12  
24  
12  
24  
8
Random Read or Write Cycle Time  
Read Modify Write Cycle Time  
Fast Page Mode Cycle Time  
tRC  
tRWC  
tHPC  
tPRWC  
tRAC  
tCAC  
tAA  
ns  
ns  
ns  
Fast Page Mode Read Modify Write Cycle Time  
Access Time from RAS  
ns  
ns 7, 12, 13  
ns 7, 12  
ns 7, 13  
ns  
Access Time from CAS  
Access Time from Column Address  
Access Time from OE  
tOEA  
tCPA  
tCLZ  
tCOH  
tOFF  
Access Time from CAS Precharge  
Output Low Impedance Time from CAS  
Data Hold After CAS Low  
ns 7, 12  
ns  
3
3
ns  
ns  
17  
8
Output Buffer Turn-off Delay Time  
3
3
Output Buffer Turn-off  
Delay Time from OE  
tOEZ  
tREZ  
tWEZ  
3
1.5  
3
8
8
8
3
1.5  
3
8
8
8
ns  
ns  
ns  
8
8
8
Output Buffer Turn-off  
Delay Time from RAS  
Output Buffer Turn-off  
Delay Time from WE  
Transition Time  
tT  
2
30  
40  
40  
8
35  
8
2
35  
45  
45  
10  
8
35  
8
ns  
ms  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
Refresh Period  
tREF  
tRP  
RAS Precharge Time  
RAS Pulse Width  
tRAS  
tRASP  
tRSH  
tROH  
tCP  
10,000  
100,000  
10,000  
100,000  
RAS Pulse Width (Fast Page Mode)  
RAS Hold Time  
RAS Hold Time Reference to OE  
CAS Precharge Time  
8
5
6
CAS Pulse Width  
tCAS  
tCSH  
tCRP  
tRHCP  
tRCD  
tRAD  
tASR  
tRAH  
tASC  
tCAH  
tAR  
6
10,000  
7
10,000  
CAS Hold Time  
35  
5
35  
5
CAS to RAS Precharge Time  
RAS Hold Time from CAS Precharge  
RAS to CAS Delay Time  
RAS to Column Address Delay Time  
Row Address Set-up Time  
Row Address Hold Time  
Column Address Set-up Time  
Column Address Hold Time  
Column Address Hold Time from RAS  
Column Address to RAS Lead Time  
22  
18  
13  
0
24  
18  
13  
0
30  
30  
12  
13  
18  
18  
8
8
0
0
6
6
30  
22  
30  
24  
tRAL  
6/21  
¡ Semiconductor  
AC Characteristics (2/2)  
Parameter  
MSM5416258A  
(VCC = 5.0 V ±0.5 V, Ta = 0°C to 70°C)  
MSM5416258A  
-40  
MSM5416258A  
-45  
Symbol  
Unit Note  
Min.  
Max.  
Min.  
Max.  
Read Command Set-up Time  
Read Command Hold Time  
tRCS  
tRCH  
0
0
0
0
ns  
ns  
9
9
Read Command Hold Time  
Reference to RAS  
tRRH  
0
0
ns  
WE Pulse Width (DQ Disable)  
Write Command Set-up Time  
Write Command Hold Time  
Write Command Pulse Width  
Write Command Hold Time from RAS  
OE Command Hold Time  
tWEP  
tWCS  
tWCH  
tWP  
10  
0
10  
0
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
11  
6
6
6
6
tWCR  
tOEH  
tCWL  
tRWL  
tDZC  
tDZO  
tDS  
30  
6
30  
7
Write Command to CAS Lead Time  
Write Command to RAS Lead Time  
Data to CAS Delay Time  
6
7
8
9
0
0
Data to OE Delay Time  
0
0
Data-in Set-up Time  
0
0
10  
10  
Data-in Hold Time  
tDH  
6
7
Data-in Hold Time referenced to RAS  
OE to Data-in Delay Time  
tDHR  
tOED  
tOCH  
tCHO  
tOEP  
tCWD  
tAWD  
tRWD  
30  
8
30  
8
OE "L" to CAS "H" Lead Time  
CAS "H" to OE "L" Lead Time  
Hi-Z Command Pulse Width  
CAS to WE Delay Time  
10  
10  
10  
22  
32  
50  
10  
10  
10  
22  
32  
55  
11  
11  
11  
Column Address to WE Delay Time  
RAS to WE Delay Time  
CAS Active Delay Time  
from RAS Precharge  
tRPC  
tCSR  
tCHR  
0
0
ns  
ns  
ns  
RAS to CAS Set-up Time  
(CAS before RAS)  
10  
10  
10  
10  
RAS to CAS Hold Time  
(CAS before RAS)  
7/21  
¡ Semiconductor  
MSM5416258A  
Notes: 1. All voltages are referenced to V .  
SS  
2. This parameter is dependent upon the cycle rate.  
3. Thisparameterisdependentupontheoutputloading. Specifiedvaluesareobtained  
with the output open.  
4. An initial pause of 200 ms is required after power-up, followed by any 8RAScycles.  
(Example : RAS-only-refresh) before proper device operation is achieved. In case of  
usinginternalrefreshcounter,aminimumof8CASbeforeRAScyclesinsteadof8RAS  
cycles are required.  
5. The AC characteristics assume t = 5 ns.  
T
6. V (Min.) and V (Max.) are reference levels for measuring timing of input signals.  
IH  
IL  
Also, transition times are measured between V and V .  
IH  
IL  
7. Data outputs are measured with a load of 50 pF. DOUT reference levels: V /V  
=
OH  
OL  
2.0V/1.4V. NotethatV isdefinedas1.4VwhenV *pins, pin13andpin32, were  
OL  
SS  
open. ThedataoutputmeasurementsunderV /V =2.0V/0.8Vareguaranteed  
OH  
OL  
when V * pins, pin 13 and pin 32, were connected to GND.  
SS  
8. t  
(Max.), t  
(Max.), t  
(Max.) and t  
(Max.) define the time at which the  
REZ  
OFF  
WEZ  
OEZ  
outputsachievetheopencircuitconditionandarenotreferencedtooutputvoltage  
levels. This parameter is sampled and not 100% tested.  
9. Either t  
or t  
must be satisfied for a read cycle.  
RRH  
RCH  
10. TheseparametersarereferencedtoCASleadingedgeofearlywritecyclesandtoWE  
leading edge in OE-controlled write cycles and read-modify-write cycles.  
11. t  
, t  
, t  
and t  
are not restrictive operating parameters. They are included  
WCS RWD CWD  
AWD  
in the data sheet as electrical characteristics only. If t  
t  
(Min.), the cycle is an  
WCS WCS  
earlywritecycleandthedataoutpinswillremainopencircuitthroughouttheentire  
cycle. If t t (Min.), t t (Min.) and t t (Min.), the cycle is  
RWD RWD  
CWD CWD  
AWD AWD  
aread-modify-writecycleandthedataoutwillcontaindatareadfromtheselectedcell.  
If neither of the above sets of conditions is satisfied, the condition of the data out is  
indeterminate.  
12. Operation within the t  
(Max.) limit insures that t  
(Max.) can be met.  
RCD  
RAC  
t
(Max.) is specified as a reference point only. If t  
(Max.) limit, then access time is controlled by t  
is greater than the specified  
RCD  
RCD  
t
.
RCD  
CAC  
13. Operation within the t  
(Max.) limit ensures that t  
(Max.) can be met.  
RAD  
RAC  
t
(Max.) is specified as a reference point only: If t  
(Max.) limit, then access time is controlled by t  
is greater than the specified  
RAD  
RAD  
t
.
RAD  
AA  
14. Input levels at the AC testing are 3.0 V/0 V.  
15. Addresses (A0 - A8) may be changed two times or less while RAS = V .  
IL  
16. Addresses (A0 - A8) may be changed once or less while CAS = V and RAS = V .  
IH  
IL  
17. This is guaranteed by design. (t  
not 100% tested.  
= t  
- output transition time). This parameter is  
COH  
CAC  
18. Thisparameterisdependentuponthenumberofaddresstransitions.Specifiedvalues  
aremeasuredwithamaximumoftwotransitionsperaddresscycleinFastPageMode.  
8/21  
¡ Semiconductor  
MSM5416258A  
TIMING WAVEFORM  
Read Cycle (RAS Output Control)  
tRC  
tRP  
tRAS  
RAS  
tCSH  
tCRP  
tRCD  
tRSH  
tCAS  
UCAS  
LCAS  
tAR  
tASC  
Column  
tRAD  
tASR tRAH  
tRAL  
tCAH  
Row  
A0 - A8  
WE  
tRCH  
tRRH  
tRCS  
tROH  
tOEZ  
tOEA  
OE  
tCAC  
tOFF  
tAA  
High-Z  
DQ0 - 7  
Valid Data  
Valid Data  
tRAC  
tOFF  
High-Z  
DQ8 - 15  
"H" or "L"  
9/21  
¡ Semiconductor  
MSM5416258A  
Read Cycle (CAS Output Control)  
tRC  
tRP  
tRAS  
RAS  
tCSH  
tCRP  
tRCD  
tRSH  
tCAS  
UCAS  
LCAS  
tAR  
tASC  
Column  
tRAD  
tRAH  
tRAL  
tASR  
tCAH  
Row  
A0 - A8  
tRCS  
tRRH  
WE  
tROH  
tOEZ  
tOEA  
OE  
tCAC  
tOFF  
tAA  
High-Z  
DQ0 - 7  
Valid Data  
Valid Data  
tRAC  
High-Z  
DQ8 - 15  
"H" or "L"  
10/21  
¡ Semiconductor  
MSM5416258A  
Early Write Cycle (LCAS and UCAS Active)  
tRC  
tRP  
tRAS  
RAS  
tCSH  
tCRP  
tRCD  
tRSH  
tCAS  
UCAS  
LCAS  
tAR  
tRAD  
tRAL  
tASR tRAH  
tASC  
tCAH  
Row  
Column  
A0 - A8  
WE  
tCWL  
tRWL  
tWP  
tWCR  
tWCS  
tWCH  
OE  
tDHR  
tDS  
tDH  
Valid Data  
DQ0 - 7  
tDS  
tDH  
Valid Data  
DQ8 - 15  
"H" or "L"  
11/21  
¡ Semiconductor  
MSM5416258A  
Late Write Cycle (LCAS and UCAS Active)  
tRC  
tRP  
tRAS  
RAS  
tCSH  
tCRP  
tRCD  
tRSH  
tCAS  
UCAS  
LCAS  
tAR  
tRAD  
tASR tRAH  
tRAL  
tASC  
tCAH  
Row  
Column  
A0 - A8  
WE  
tCWL  
tRWL  
tWP  
tRCS  
tWCR  
tOEH  
OE  
tDS  
tDH  
Valid Data  
DQ0 - 7  
tDS  
tDH  
Valid Data  
DQ8 - 15  
"H" or "L"  
12/21  
¡ Semiconductor  
MSM5416258A  
Read Modify Write Cycle (LCAS and UCAS Active)  
tRWC  
tRP  
tRAS  
RAS  
tCSH  
tCRP  
tRCD  
tRSH  
tCAS  
UCAS  
LCAS  
tAR  
tASC  
tRAD  
tASR tRAH  
tRAL  
tCAH  
Column  
Row  
A0 - A8  
WE  
tAWD  
tCWL  
tRWL  
tWP  
tRCS  
tRWD  
tCWD  
tDZO  
tOEH  
tOEA  
tOEZ  
tOED  
tDS  
OE  
tCAC  
tDZC  
tDH  
Out  
Out  
In  
In  
DQ0 - 7  
tRAC  
tDS  
tDH  
DQ8 - 15  
"H" or "L"  
13/21  
¡ Semiconductor  
MSM5416258A  
Fast Page Mode Read Cycle  
tRASP  
tAR  
tRHCP  
tRP  
RAS  
tCRP  
tPC  
tRSH  
tCAS  
tCRP  
tCP  
tRCD  
tRAD  
tCP  
tCAS  
tCAS  
UCAS  
LCAS  
tRAL  
tCAH  
tCSH  
tCAH  
tASR  
Row  
tASC  
tASC  
tCAH  
tASC  
tRAH  
Column  
Column  
tRCS  
Column  
tRCS  
A0 - A8  
tRCH  
tRRH  
tOFF  
tRCS  
tRCH  
tRCH  
WE  
tAA  
tAA  
tAA  
tCPA  
tOEA  
tCPA  
tOEA  
tOEA  
tCAC  
OE  
tOFF  
tCAC  
tOFF  
tCAC  
tRAC  
tOEZ  
tOEZ  
tOEZ  
Valid  
Data  
Valid  
Valid  
High-Z  
High-Z  
DQ0 - 7  
Data  
Data  
tCLZ  
tCLZ  
tCLZ  
Valid  
Data  
Valid  
Data  
Valid  
Data  
DQ8 - 15  
"H" or "L"  
14/21  
tRC  
tRP  
tRASP  
tAR  
tCSH  
RAS  
tHPC  
tRSH  
tCRP  
tRCD  
tCP  
tCP  
tCP  
tCRP  
tCAS  
tCAS  
tCAS  
tCAS  
tRAL  
UCAS  
LCAS  
tRAD  
tASR tRAH  
Row  
tASC  
tCAH  
tASC tCAH  
Column  
tASC tCAH  
Column  
tASC tCAH  
Column  
Column  
A0 - A8  
WE  
tRRH  
tRCS  
tRCH  
tRCS  
tRCH  
tRAC  
tCHO  
tOEP  
tOCH  
tWEP  
tOEA  
tCAC  
tAA  
tOEP  
tCAC  
OE  
tCAC  
tAA  
tCPA  
tDOH  
tAA  
tCAC  
tAA  
tOEZ  
tOEA  
tOEZ tOEA  
tWEZ  
tREZ  
Valid  
Valid  
Valid  
High-Z  
High-Z  
Valid Data  
Valid Data  
Valid Data  
DQ0 - 7  
Data  
Data  
Data  
Valid  
Data  
Valid  
Data  
Valid  
Data  
Valid Data  
DQ8 - 15  
"H" or "L"  
¡ Semiconductor  
MSM5416258A  
Fast Page Mode Early Write Cycle  
tRC  
tRASP  
tRP  
RAS  
tCSH  
tPC  
tRSH  
tCAS  
tCRP  
tCP  
tRCD  
tCP  
tCAS  
tCAH  
tCAS  
UCAS  
LCAS  
tAR  
tRAD  
tRAL  
tCAH  
tASR  
Row  
tASC  
tASC  
tCAH  
tASC  
tRAH  
Column  
tCWL  
Column  
tCWL  
Column  
tCWL  
A0 - A8  
tWCS  
tWCS  
tWCS  
tWCH  
tWCH  
tWCH  
tWP  
tWP  
tWP  
WE  
OE  
tDH  
tDS  
Input Data  
tDS  
tDH  
Input Data  
tDH  
tDS  
tDH  
tDS  
Input Data  
tDH  
Input Data  
tDS  
tDH  
Input Data  
DQ0 - 7  
tDS  
DQ8 - 15  
Input Data  
"H" or "L"  
16/21  
¡ Semiconductor  
MSM5416258A  
Fast Page Mode Read Modify Write Cycle  
tRC  
tRASP  
tRP  
RAS  
tCSH  
tPRWC  
tCAS  
tRSH  
tCAS  
tCRP  
tRCD  
tCAS  
tCP  
tCP  
UCAS  
LCAS  
tAR  
tRAL  
tCAH  
tRAD  
tCAH  
tCAH  
tASR tRAH tASC  
tASC  
tASC  
A0 - A8  
Row  
Column  
Column  
Column  
tCWL  
tCWL  
tCWL  
tAWD  
tAWD  
tAWD  
WE  
tCWD  
tWP  
tCWD  
tWP  
tCWD  
tWP  
tRCS  
tOEA  
tOEA  
tOEA  
tOEZ  
tOEZ  
tOEZ  
OE  
tCAC  
tAA  
tCAC  
tAA  
tCAC  
tAA  
tDH  
tDH  
tDH  
tDS  
tDS  
tDS  
DQ0 - 7  
Out  
In  
Out  
In  
Out  
In  
tDH  
tDH  
tDH  
tCAC  
tCAC  
tCAC  
tAA  
tDS  
tDS  
tDS  
tAA  
tAA  
Out  
In  
Out In  
Out  
In  
DQ8 - 15  
"H" or "L"  
17/21  
¡ Semiconductor  
MSM5416258A  
CAS before RAS Refresh Cycle  
tRC  
tRP  
tRAS  
tRP  
RAS  
tRPC  
tRPC  
tCSR  
tCHR  
UCAS  
LCAS  
Inhibit Falling Transition  
A0 - A8  
WE  
OE  
tOFF  
High-Z  
High-Z  
DQ0 - 7  
tOFF  
DQ8 - 15  
"H" or "L"  
18/21  
¡ Semiconductor  
MSM5416258A  
Hidden Refresh Cycle  
tRC  
tRAS  
tRP  
tRAS  
RAS  
tCRP  
tRCD  
tRSH  
tCHR  
UCAS  
LCAS  
tAR  
tASC  
tRAD  
tRAH  
tRAL  
tCAH  
tASR  
Row  
Column  
A0 - A8  
tRRH  
tRCS  
WE  
tROH  
tOEA  
tOEZ  
OE  
tRAC  
tOFF  
tCAC  
tAA  
High-Z  
High-Z  
DQ0 - 7  
Valid Data  
Valid Data  
tRAC  
tCAC  
tAA  
tOFF  
DQ8 - 15  
"H" or "L"  
19/21  
¡ Semiconductor  
MSM5416258A  
RAS Only Refresh Cycle  
tRC  
tRAS  
tRP  
RAS  
tRPC  
tCRP  
UCAS  
LCAS  
tASR tRAH  
Row  
A0 - A8  
WE  
OE  
High-Z  
DQ0 - 7  
High-Z  
DQ8 - 15  
"H" or "L"  
20/21  
¡ Semiconductor  
PACKAGE DIMENSIONS  
TSOPII44/40-P-400-0.80-K  
MSM5416258A  
(Unit : mm)  
Mirror finish  
Package material  
Lead frame material  
Pin treatment  
Solder plate thickness  
Package weight (g)  
Epoxy resin  
42 alloy  
Solder plating  
5 mm or more  
0.49 TYP.  
Notes for Mounting the Surface Mount Type Package  
The SOP, QFP, TSOP, TQFP, LQFP, SOJ, QFJ (PLCC), SHP, and BGA are surface mount type  
packages, which are very susceptible to heat in reflow mounting and humidity absorbed in  
storage. Therefore, before you perform reflow mounting, contact Oki’s responsible sales person  
ontheproductname,packagename,pinnumber,packagecodeanddesiredmountingconditions  
(reflow method, temperature and times).  
21/21  
E2Y0002-28-41  
NOTICE  
1.  
The information contained herein can change without notice owing to product and/or  
technical improvements. Before using the product, please make sure that the information  
being referred to is up-to-date.  
2.  
The outline of action and examples for application circuits described herein have been  
chosen as an explanation for the standard action and performance of the product. When  
planning to use the product, please ensure that the external conditions are reflected in the  
actual circuit, assembly, and program designs.  
3.  
4.  
When designing your product, please use our product below the specified maximum  
ratings and within the specified operating ranges including, but not limited to, operating  
voltage, power dissipation, and operating temperature.  
Oki assumes no responsibility or liability whatsoever for any failure or unusual or  
unexpected operation resulting from misuse, neglect, improper installation, repair, alteration  
or accident, improper handling, or unusual physical or electrical stress including, but not  
limited to, exposure to parameters beyond the specified maximum ratings or operation  
outside the specified operating range.  
5.  
6.  
Neither indemnity against nor license of a third party’s industrial and intellectual property  
right, etc. is granted by us in connection with the use of the product and/or the information  
and drawings contained herein. No responsibility is assumed by us for any infringement  
of a third party’s right which may result from the use thereof.  
The products listed in this document are intended for use in general electronics equipment  
for commercial applications (e.g., office automation, communication equipment,  
measurement equipment, consumer electronics, etc.). These products are not authorized  
for use in any system or application that requires special or enhanced quality and reliability  
characteristics nor in any system or application where the failure of such system or  
application may result in the loss or damage of property, or death or injury to humans.  
Such applications include, but are not limited to, traffic and automotive equipment, safety  
devices, aerospace equipment, nuclear power control, medical equipment, and life-support  
systems.  
7.  
Certain products in this document may need government approval before they can be  
exported to particular countries. The purchaser assumes the responsibility of determining  
thelegalityofexportoftheseproductsandwilltakeappropriateandnecessarystepsattheir  
own expense for these.  
8.  
9.  
No part of the contents cotained herein may be reprinted or reproduced without our prior  
permission.  
MS-DOS is a registered trademark of Microsoft Corporation.  
Copyright 1998 Oki Electric Industry Co., Ltd.  
Printed in Japan  

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