K4S641632N-LP750 [SAMSUNG]

Synchronous DRAM, 4MX16, 5.4ns, CMOS, PDSO54, 0.400 X 0.875 INCH, 0.80 MM PITCH, ROHS COMPLIANT AND HALOGEN FREE, TSOP2-54;
K4S641632N-LP750
型号: K4S641632N-LP750
厂家: SAMSUNG    SAMSUNG
描述:

Synchronous DRAM, 4MX16, 5.4ns, CMOS, PDSO54, 0.400 X 0.875 INCH, 0.80 MM PITCH, ROHS COMPLIANT AND HALOGEN FREE, TSOP2-54

时钟 动态存储器 光电二极管 内存集成电路
文件: 总14页 (文件大小:333K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
K4S641632N  
Industrial Synchronous DRAM  
64Mb N-die SDRAM Specification  
54 TSOP-II  
with Lead-Free and Halogen-Free  
(RoHS compliant)  
Industrial Temp. -40 to 85°C  
INFORMATION IN THIS DOCUMENT IS PROVIDED IN RELATION TO SAMSUNG PRODUCTS,  
AND IS SUBJECT TO CHANGE WITHOUT NOTICE.  
NOTHING IN THIS DOCUMENT SHALL BE CONSTRUED AS GRANTING ANY LICENSE,  
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE,  
TO ANY INTELLECTUAL PROPERTY RIGHTS IN SAMSUNG PRODUCTS OR TECHNOLOGY. ALL  
INFORMATION IN THIS DOCUMENT IS PROVIDED  
ON AS "AS IS" BASIS WITHOUT GUARANTEE OR WARRANTY OF ANY KIND.  
1. For updates or additional information about Samsung products, contact your nearest Samsung office.  
2. Samsung products are not intended for use in life support, critical care, medical, safety equipment, or similar  
applications where Product failure couldresult in loss of life or personal or physical harm, or any military or  
defense application, or any governmental procurement to which special terms or provisions may apply.  
* Samsung Electronics reserves the right to change products or specification without notice.  
Rev. 1.12 July 2008  
1 of 14  
K4S641632N  
Industrial Synchronous DRAM  
Table of Contents  
1.0 FEATURES .....................................................................................................................................4  
2.0 GENERAL DESCRIPTION .............................................................................................................4  
3.0 Ordering Information ....................................................................................................................4  
4.0 Package Physical Dimension ......................................................................................................5  
5.0 FUNCTIONAL BLOCK DIAGRAM .................................................................................................6  
6.0 PIN CONFIGURATION ...................................................................................................................7  
7.0 Input/Output Function Description .............................................................................................7  
8.0 ABSOLUTE MAXIMUM RATINGS ................................................................................................8  
9.0 DC OPERATING CONDITIONS .....................................................................................................8  
10.0 CAPACITANCE ............................................................................................................................8  
11.0 DC CHARACTERISTICS (x16).....................................................................................................9  
12.0 AC OPERATING TEST CONDITIONS .......................................................................................10  
13.0 OPERATING AC PARAMETER .................................................................................................10  
14.0 AC CHARACTERISTICS ...........................................................................................................11  
15.0 DQ BUFFER OUTPUT DRIVE CHARACTERISTICS ................................................................11  
16.0 IBIS SPECIFICATION ................................................................................................................12  
17.0 SIMPLIFIED TRUTH TABLE ......................................................................................................14  
Rev. 1.12 July 2008  
2 of 14  
K4S641632N  
Industrial Synchronous DRAM  
Revision History  
Revision  
1.0  
Month  
December  
December  
March  
Year  
2007  
2007  
2008  
2008  
History  
- Release SPEC revision 1.0  
- Revised ICC6 current SPEC of lowpower  
- Added Package pin out lead width  
1.1  
1.11  
1.12  
July  
- Corrected typo of temperature condition on page 10  
Rev. 1.12 July 2008  
3 of 14  
K4S641632N  
Industrial Synchronous DRAM  
1M x 16Bit x 4Banks SDRAM  
1.0 FEATURES  
• JEDEC standard 3.3V power supply  
• LVTTL compatible with multiplexed address  
• Four banks operation  
• MRS cycle with address key programs  
-. CAS latency (2 & 3)  
-. Burst length (1, 2, 4, 8 & Full page)  
-. Burst type (Sequential & Interleave)  
• All inputs are sampled at the positive going edge of the system clock  
• Burst read single-bit write operation  
• DQM (x8) & L(U)DQM (x16) for masking  
• Auto & self refresh  
• 64ms refresh period (4K cycle)  
• Lead-Free and Halogen-Free Package  
• RoHS compliant  
• Support Industrial Temp (-40 to 85°C)  
2.0 GENERAL DESCRIPTION  
The K4S641632N is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 x 1,048,576 words by 16 bits, fabricated  
with SAMSUNGs high performance CMOS technology. Synchronous design allows precise cycle control with the use of system clock I/  
O transactions are possible on every clock cycle. Range of operating frequencies, programmable burst length and programmable laten-  
cies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.  
3.0 Ordering Information  
Part No.  
Orgainization  
Max Freq.  
Interface  
Package  
K4S641632N-LI/P60  
K4S641632N-LI/P75  
166MHz(CL=3)  
133MHz(CL=3)  
54pin TSOP(II)  
Lead-Free & Halogen-Free  
4Mb x 16  
LVTTL  
Organization  
Row Address  
Column Address  
4Mx16  
A0~A11  
A0-A7  
Row & Column address configuration  
Rev. 1.12 July 2008  
4 of 14  
K4S641632N  
Industrial Synchronous DRAM  
4.0 Package Physical Dimension  
Unit : mm  
#54  
#28  
#1  
#27  
(1.50)  
+0.075  
0.125  
- 0.035  
22.22 ± 0.10  
(10°)  
0.10 MAX  
[
(10°)  
0.80TYP  
0.075 MAX  
[
(0.71)  
[0.80 ± 0.08]  
Detail A  
Detail B  
Detail B  
0.25TYP  
NOTE  
1. ( ) IS REFERENCE  
2. [ ] IS ASS’Y OUT QUALITY  
Detail A  
(0° ∼ 8°)  
+0.10  
- 0.05  
+0.10  
0.35  
- 0.05  
0.30  
54Pin TSOP(II) Package Dimension  
Rev. 1.12 July 2008  
5 of 14  
K4S641632N  
Industrial Synchronous DRAM  
5.0 FUNCTIONAL BLOCK DIAGRAM  
LWE  
Data Input Register  
LDQM  
Bank Select  
1M x 16  
1M x 16  
DQi  
1M x 16  
CLK  
ADD  
1M x 16  
Column Decoder  
Latency & Burst Length  
LCKE  
Programming Register  
LRAS  
LCBR  
LWE  
LCAS  
LWCBR  
LDQM  
Timing Register  
CLK  
CKE  
CS  
RAS  
CAS  
WE  
L(U)DQM  
Samsung Electronics reserves the right to change products or specification without notice.  
*
Rev. 1.12 July 2008  
6 of 14  
K4S641632N  
Industrial Synchronous DRAM  
6.0 PIN CONFIGURATION  
x16  
x16  
VDD  
DQ0  
VDDQ  
DQ1  
DQ2  
VSSQ  
DQ3  
DQ4  
VDDQ  
DQ5  
DQ6  
VSSQ  
DQ7  
VDD  
1
VSS  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
2
DQ15  
VSSQ  
DQ14  
DQ13  
VDDQ  
DQ12  
DQ11  
VSSQ  
DQ10  
DQ9  
VDDQ  
DQ8  
VSS  
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
LDQM  
WE  
N.C/RFU  
UDQM  
CLK  
CKE  
N.C  
CAS  
RAS  
CS  
BA0  
BA1  
A10/AP  
A0  
A11  
A9  
A8  
A7  
A1  
A6  
54Pin TSOP (II)  
(400mil x 875mil)  
(0.8 mm Pin pitch)  
A2  
A5  
A3  
A4  
VDD  
VSS  
7.0 Input/Output Function Description  
Pin  
Name  
System clock  
Description  
CLK  
CS  
Active on the positive going edge to sample all inputs.  
Disables or enables device operation by masking or enabling all inputs except  
CLK, CKE and DQM  
Chip select  
Masks system clock to freeze operation from the next clock cycle.  
CKE should be enabled at least one cycle prior to new command.  
Disable input buffers for power down in standby.  
CKE  
Clock enable  
Row/column addresses are multiplexed on the same pins.  
Row address : RA0 ~ RA11,  
Column address : (x16 : CA0 ~ CA7)  
A0 ~ A11  
Address  
Selects bank to be activated during row address latch time.  
Selects bank for read/write during column address latch time.  
Latches row addresses on the positive going edge of the CLK with RAS low.  
Enables row access & precharge.  
Latches column addresses on the positive going edge of the CLK with CAS low.  
Enables column access.  
Enables write operation and row precharge.  
Latches data in starting from CAS, WE active.  
BA0 ~ BA1  
RAS  
Bank select address  
Row address strobe  
Column address strobe  
Write enable  
CAS  
WE  
Makes data output Hi-Z, tSHZ after the clock and masks the output.  
Blocks data input when DQM active.  
DQM  
Data input/output mask  
Data inputs/outputs are multiplexed on the same pins.  
(x16 : DQ0 ~ 15)  
DQ0 ~ N  
Data input/output  
VDD/VSS  
VDDQ/VSSQ  
Power supply/ground  
Data output power/ground  
Power and ground for the input buffers and the core logic.  
Isolated power supply and ground for the output buffers to provide improved noise  
immunity.  
No connection  
/reserved for future use  
N.C/RFU  
This pin is recommended to be left No Connection on the device.  
Rev. 1.12 July 2008  
7 of 14  
K4S641632N  
Industrial Synchronous DRAM  
8.0 ABSOLUTE MAXIMUM RATINGS  
Parameter  
Voltage on any pin relative to VSS  
Voltage on VDD supply relative to VSS  
Storage temperature  
Symbol  
Value  
-1.0 ~ 4.6  
-1.0 ~ 4.6  
-55 ~ +150  
1
Unit  
V
VIN, VOUT  
VDD, VDDQ  
TSTG  
V
°C  
W
Power dissipation  
PD  
Short circuit current  
IOS  
50  
mA  
Note :  
Permanent device damage may occur if "ASOLUTE MAXIMUM RATINGS" are exceeded.  
Functional operation should be restricted to recommended operating condition.  
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.  
9.0 DC OPERATING CONDITIONS  
Recommended operating conditions (Voltage referenced to VSS = 0V, TA = -40 to 85°C)  
Parameter  
Supply voltage  
Symbol  
VDD, VDDQ  
VIH  
Min  
3.0  
2.0  
-0.3  
2.4  
-
Typ  
3.3  
3.0  
0
Max  
3.6  
Unit  
V
Note  
Input logic high voltage  
Input logic low voltage  
Output logic high voltage  
Output logic low voltage  
Input leakage current  
VDD+0.3  
0.8  
V
1
VIL  
V
2
VOH  
-
-
V
IOH = -2mA  
IOL = 2mA  
3
VOL  
-
0.4  
V
ILI  
-10  
-
10  
uA  
Notes :  
1. VIH (max) = 5.6V AC.The overshoot voltage duration is 3ns.  
2. VIL (min) = -2.0V AC. The undershoot voltage duration is 3ns.  
3. Any input 0V VIN VDDQ.  
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.  
(VDD = 3.3V, TA = 23°C, f = 1MHz)  
10.0 CAPACITANCE  
Pin  
Symbol  
CCLK  
CIN  
Min  
2.5  
2.5  
2.5  
4.0  
Max  
4.0  
5.0  
5.0  
6.5  
Unit  
pF  
Note  
Clock  
RAS, CAS, WE, CS, CKE, DQM  
Address  
pF  
CADD  
COUT  
pF  
(x8 : DQ0 ~ DQ7), (x16 : DQ0 ~DQ15)  
pF  
Rev. 1.12 July 2008  
8 of 14  
K4S641632N  
Industrial Synchronous DRAM  
11.0 DC CHARACTERISTICS (x16)  
(Recommended operating condition unless otherwise noted, TA = -40 to 85°C for x16 only)  
Version  
Parameter  
Symbol  
Test Condition  
Unit  
Note  
60  
75  
Burst length = 1  
tRC tRC(min)  
IO = 0 mA  
Operating current  
ICC1  
80  
65  
mA  
mA  
1
(One bank active)  
ICC2P  
CKE VIL(max), tCC = 10ns  
ICC2PS CKE & CLK VIL(max), tCC = ∞  
2
2
Precharge standby current in  
power-down mode  
CKE VIH(min), CS VIH(min), tCC = 10ns  
ICC2N  
15  
10  
Input signals are changed one time during 20ns  
Precharge standby current in  
non power-down mode  
mA  
mA  
mA  
CKE VIH(min), CLK VIL(max), tCC = ∞  
Input signals are stable  
ICC2NS  
ICC3P  
CKE VIL(max), tCC = 10ns  
4
4
Active standby current in  
power-down mode  
ICC3PS CKE & CLK VIL(max), tCC = ∞  
CKE VIH(min), CS VIH(min), tCC = 10ns  
Input signals are changed one time during 20ns  
CKE VIH(min), CLK VIL(max), tCC = ∞  
Input signals are stable  
ICC3N  
30  
25  
Active standby current in  
non power-down mode  
(One bank active)  
ICC3NS  
IO = 0 mA  
Operating current  
(Burst mode)  
Page burst  
ICC4  
120  
120  
110  
110  
mA  
1
4Banks Activated  
tCCD = 2CLKs  
Refresh current  
ICC5  
ICC6  
tRC tRC(min)  
mA  
mA  
uA  
2
3
4
I
P
1
400  
Self refresh current  
CKE 0.2V  
Notes :  
1. Measured with outputs open.  
2. Refresh period is 64ms.  
3. K4S641632N-LI  
4. K4S641632N-LP  
5. Unless otherwise noted, input swing IeveI is CMOS(VIH /VIL=VDDQ/VSSQ)  
Rev. 1.12 July 2008  
9 of 14  
K4S641632N  
Industrial Synchronous DRAM  
(VDD = 3.3V ± 0.3V, TA = -40 to 85°C)  
12.0 AC OPERATING TEST CONDITIONS  
Parameter  
AC input levels (Vih/Vil)  
Value  
2.4/0.4  
1.4  
Unit  
V
Input timing measurement reference level  
Input rise and fall time  
V
tr/tf = 1/1  
1.4  
ns  
V
Output timing measurement reference level  
Output load condition  
See Fig. 2  
3.3V  
Vtt = 1.4V  
1200Ω  
50Ω  
VOH (DC) = 2.4V, IOH = -2mA  
VOL (DC) = 0.4V, IOL = 2mA  
Output  
Output  
Z0 = 50Ω  
30pF  
30pF  
870Ω  
(Fig. 1) DC output load circuit  
(Fig. 2) AC output load circuit  
(AC operating conditions unless otherwise noted)  
13.0 OPERATING AC PARAMETER  
Version  
Parameter  
Symbol  
Unit  
Note  
60  
12  
18  
18  
42  
75  
15  
20  
20  
45  
Row active to row active delay  
RAS to CAS delay  
Row precharge time  
tRRD(min)  
tRCD(min)  
tRP(min)  
ns  
ns  
ns  
1
1
1
1
tRAS(min)  
tRAS(max)  
tRC(min)  
ns  
Row active time  
100  
us  
Row cycle time  
60  
65  
ns  
1, 6  
Last data in to row precharge  
Last data in to Active delay  
Last data in to new col. address delay  
Last data in to burst stop  
tRDL(min)  
tDAL(min)  
tCDL(min)  
tBDL(min)  
tCCD(min)  
2
CLK  
-
CLK  
CLK  
CLK  
2,5,6  
2 CLK + tRP  
5
2
2
3
1
1
1
2
1
Col. address to col. address delay  
CAS latency = 3  
CAS latency = 2  
Number of valid output data  
ea  
4
Notes :  
1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time  
and then rounding off to the next higher integer.  
2. Minimum delay is required to complete write.  
3. All parts allow every cycle column address change.  
4. In case of row precharge interrupt, auto precharge and read burst stop.  
5. In 100MHz and below 100MHz operating conditions, tRDL=1CLK and tDAL=1CLK + 20ns is also supported.  
SAMSUNG recommends tRDL=2CLK and tDAL=2CLK + tRP.  
6. tRC =tRFC, tRDL = tWR.  
Rev. 1.12 July 2008  
10 of 14  
K4S641632N  
Industrial Synchronous DRAM  
(AC operating conditions unless otherwise noted)  
14.0 AC CHARACTERISTICS  
60  
75  
Parameter  
Symbol  
Unit  
ns  
Note  
1
Min  
6
10  
-
Max  
Min  
7.5  
10  
-
-
3
Max  
CAS latency=3  
CLK cycle time  
tCC  
tSAC  
tOH  
1000  
1000  
CAS latency=2  
CAS latency=3  
CAS latency=2  
CAS latency=3  
CAS latency=2  
5
6
-
5.4  
6
-
-
CLK to valid  
output delay  
ns  
1,2  
2
-
2.5  
3
Output data  
hold time  
ns  
-
3
CLK high pulse width  
CLK low pulse width  
Input setup time  
Input hold time  
CLK to output in Low-Z  
tCH  
tCL  
tSS  
2.5  
2.5  
1.5  
1
-
-
-
-
2.5  
2.5  
1.5  
0.8  
1
-
-
-
-
ns  
ns  
ns  
ns  
ns  
3
3
3, 4  
3, 4  
2
tSH  
tSLZ  
1
-
-
CAS latency=3  
CAS latency=2  
-
-
5
6
-
-
5.4  
6
CLK to output  
in Hi-Z  
tSHZ  
ns  
Notes :  
1. Parameters depend on programmed CAS latency.  
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.  
3. Assumed input rise and fall time (tr & tf) = 1ns.  
If tr & tf is longer than 1ns, transient time compensation should be considered,  
i.e., [(tr + tf)/2-1]ns should be added to the parameter.  
4. tSS applies for address setup time, clock enable setup time, commend setup time and data setup time  
tSH applies for address holde time, clock enable hold time, commend hold time and data hold time  
15.0 DQ BUFFER OUTPUT DRIVE CHARACTERISTICS  
Parameter  
Symbol  
Condition  
Min  
Typ  
Max  
Unit  
Notes  
Measure in linear  
Output rise time  
trh  
1.37  
4.37  
Volts/ns  
Volts/ns  
Volts/ns  
Volts/ns  
3
region : 1.2V ~ 1.8V  
Measure in linear  
region : 1.2V ~ 1.8V  
Output fall time  
Output rise time  
Output fall time  
tfh  
trh  
tfh  
1.30  
2.8  
3.8  
5.6  
5.0  
3
Measure in linear  
region : 1.2V ~ 1.8V  
3.9  
2.9  
1,2  
1,2  
Measure in linear  
region : 1.2V ~ 1.8V  
2.0  
Notes :  
1. Rise time specification based on 0pF + 50 to VSS, use these values to design to.  
2. Fall time specification based on 0pF + 50 to VDD, use these values to design to.  
3. Measured into 50pF only, use these values to characterize to.  
4. All measurements done with respect to VSS.  
Rev. 1.12 July 2008  
11 of 14  
K4S641632N  
Industrial Synchronous DRAM  
16.0 IBIS SPECIFICATION  
200MHz/133MHz Pull-up  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
IOH Characteristics (Pull-up)  
0
-100  
-200  
-300  
-400  
-500  
-600  
200MHz/133MHz 200MHz/133MHz  
Voltage  
Min  
I (mA)  
-
Max  
(V)  
I (mA)  
-1.68  
3.45  
3.30  
3.00  
2.70  
2.50  
1.95  
1.80  
1.65  
1.50  
1.40  
1.00  
0.20  
-
-19.11  
-51.87  
-90.44  
-107.31  
-137.9  
-158.34  
-173.6  
-188.79  
-199.01  
-241.15  
-351.68  
-0.35  
-3.75  
-6.65  
-13.75  
-17.75  
-20.55  
-23.55  
-26.2  
-36.25  
-46.5  
Voltage  
IOH Min (200MHz / 133MHz)  
IOH Max (200MHz / 133MHz)  
200MHz/133MHz Pull-down  
IOL Characteristics (Pull-down)  
250  
200  
150  
100  
50  
200MHz/133MHz 200MHz/133MHz  
Voltage  
Min  
I (mA)  
43.92  
-
Max  
I (mA)  
155.82  
-
153.72  
148.40  
146.02  
141.75  
136.08  
131.39  
105.84  
93.66  
75.25  
49.14  
(V)  
3.45  
3.30  
3.00  
1.95  
1.80  
1.65  
1.50  
1.40  
1.00  
0.85  
0.65  
0.40  
43.36  
41.20  
40.56  
39.60  
38.40  
37.28  
30.08  
26.64  
21.52  
14.16  
0
0
0.5  
1
1.5  
2
2.5  
3
3.5  
Voltage  
IOL Min (200MHz / 133MHz)  
IOL Max (200MHz / 133MHz)  
Rev. 1.12 July 2008  
12 of 14  
K4S641632N  
Industrial Synchronous DRAM  
Minimum VDD clamp current  
(Referenced to VDD)  
VDD Clamp @ CLK, CKE, CS, DQM & DQ  
VDD (V)  
0.0  
0.2  
0.4  
0.6  
0.7  
0.8  
0.9  
1.0  
1.2  
1.4  
1.6  
1.8  
2.0  
2.2  
2.4  
2.6  
I (mA)  
0.0  
20  
15  
10  
5
0.0  
0.0  
0.0  
0.0  
0.0  
0.0  
0.23  
1.34  
3.02  
5.06  
7.35  
9.83  
12.48  
15.30  
18.31  
0
0
1
2
3
Voltage  
I (mA)  
Minimum VSS clamp current  
-2 -1  
VSS Clamp @ CLK, CKE, CS, DQM & DQ  
-3  
0
VSS (V)  
-2.6  
-2.4  
-2.2  
-2.0  
-1.8  
-1.6  
-1.4  
-1.2  
-1.0  
-0.9  
-0.8  
-0.7  
-0.6  
-0.4  
-0.2  
0.0  
I (mA)  
-57.23  
-45.77  
-38.26  
-31.22  
-24.58  
-18.37  
-12.56  
-7.57  
-3.37  
-1.75  
-0.58  
-0.05  
0.0  
0
-10  
-20  
-30  
-40  
-50  
-60  
0.0  
0.0  
0.0  
Voltage  
I (mA)  
Rev. 1.12 July 2008  
13 of 14  
K4S641632N  
Industrial Synchronous DRAM  
(V=Valid, X=Dont care, H=Logic high, L=Logic low)  
17.0 SIMPLIFIED TRUTH TABLE  
A11,  
CKEn-1 CKEn  
CS  
RAS  
CAS  
WE  
DQM BA0,1  
A10/AP  
Note  
Command  
A9 ~ A0  
Register  
Refresh  
Mode register set  
Auto refresh  
H
H
X
H
L
L
L
L
L
X
OP code  
1,2  
3
3
3
3
L
L
L
H
X
X
X
X
Entry  
Exit  
Self  
refresh  
L
H
L
H
X
L
H
X
H
H
X
H
L
H
H
H
X
X
Bank active & row addr.  
Read &  
column address  
X
X
V
V
Row address  
Auto precharge disable  
Auto precharge enable  
Auto precharge disable  
Auto precharge enable  
L
H
L
4
4,5  
4
4,5  
6
Column  
address  
L
H
L
H
Write &  
column address  
Column  
address  
H
H
H
X
X
X
L
L
L
H
H
L
L
H
H
L
L
L
X
X
X
V
H
Burst stop  
Precharge  
X
Bank selection  
All banks  
V
X
L
H
X
H
L
X
H
L
X
V
X
X
H
X
V
X
X
H
X
V
X
X
H
X
V
X
V
X
X
H
X
V
Entry  
Exit  
H
L
L
H
L
X
X
X
Clock suspend or  
active power down  
X
X
Entry  
H
Precharge power down mode  
H
L
Exit  
L
H
H
H
X
X
V
X
DQM  
X
X
7
H
L
X
H
X
H
No operation command  
Notes :  
1. OP Code : Operand code  
A0 ~ A11 & BA0 ~ BA1 : Program keys. (@ MRS)  
2. MRS can be issued only at all banks precharge state.  
A new command can be issued after 2 CLK cycles of MRS.  
3. Auto refresh functions are as same as CBR refresh of DRAM.  
The automatical precharge without row precharge command is meant by "Auto".  
Auto/self refresh can be issued only at all banks precharge state.  
4. BA0 ~ BA1 : Bank select addresses.  
If both BA0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected.  
If both BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank B is selected.  
If both BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank C is selected.  
If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected.  
If A10/AP is "High" at row precharge, BA0 and BA1 is ignored and all banks are selected.  
5. During burst read or write with auto precharge, new read/write command can not be issued.  
Another bank read/write command can be issued after the end of burst.  
New row active of the associated bank can be issued at tRP after the end of burst.  
6. Burst stop command is valid at every burst length.  
7. DQM sampled at positive going edge of a CLK and masks the data-in at the very CLK (Write DQM latency is 0),  
but makes Hi-Z state the data-out of 2 CLK cycles after. (Read DQM latency is 2)  
Rev. 1.12 July 2008  
14 of 14  

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