SAMSUNG ELECTRONICS CO., Ltd. reserves the right to change products and specifications without notice.
Rev. 1.2 March 2004
128MB, 256MB SODIMM
DDR SDRAM
Pin Configurations (Front side/back side)
PinFrontPinFrontPinFrontPinBackPinBackPinBack
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
VREF
VSS
DQ0
DQ1
VDD
DQS0
DQ2
VSS
DQ3
DQ8
VDD
DQ9
DQS1
VSS
DQ10
DQ11
VDD
CK0
/CK0
VSS
KEY
41
43
45
47
49
51
53
55
57
59
61
63
65
Note 1. * : These pins are not used in this module.
2. Pins 71, 72, 73, 74, 77, 78, 79, 80, 83, 84 are not used on x64 module, & used on x72 module.
Pin 95,122 are NC for 1Row module (M470L1624FT0, M485L1624FT0) & used for 2Row module (M470L3224FT0).
1. DQ-to-I/O wiring is shown as recommended but may be changed.
SDA
2. DQ/DQS/DM/CKE/CS relationships must
be maintained as shown.
3. DQ, DQS, DM/DQS resistors: 22 Ohms.
D0/D2/D4
Cap/Cap/Cap
D1/D3/Cap
Cap/Cap/Cap
Rev. 1.2 March 2004
128MB, 256MB SODIMM
DDR SDRAM
Absolute Maximum Ratings
ParameterSymbolValueUnit
Voltage on any pin relative to VssV
Voltage on V
Voltage on V
DD supply relative to VssVDD-1.0 ~ 3.6V
DDQ supply relative to VssVDDQ-1.0 ~ 3.6V
Storage temperatureT
Power dissipationP
Short circuit currentI
Note :
Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
IN, VOUT-0.5 ~ 3.6V
STG-55 ~ +150°C
D1.5 * # of componentW
OS50mA
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
Power & DC Operating Conditions (SSTL_2 In/Out)
Recommended operating conditions(Voltage referenced to V
ParameterSymbolMinMaxUnitNote
Supply voltage(for device with a nominal VDD of 2.5V)VDD2.32.75
I/O Supply voltageV
I/O Reference voltageV
I/O Termination voltage(system)V
Input logic high voltageV
Input logic low voltageV
Input Voltage Level, CK and CK
Input Differential Voltage, CK and CK
V-I Matching: Pullup to Pulldown Current RatioVI(Ratio)0.711.4-4
Input leakage currentI
Output leakage currentI
Output High Current(Normal strengh driver) ;V
V
+ 0.84V
TT
Output High Current(Normal strengh driver) ;V
V
- 0.84V
TT
Output High Current(Half strengh driver) ;V
+ 0.45V
inputsVIN(DC)-0.3VDDQ+0.3V
inputsVID(DC)0.36VDDQ+0.6V3
OUT
OUT
= VTT
OUT
SS=0V, TA=0 to 70°C)
DDQ2.32.7V5
IH(DC)VREF+0.15VDDQ+0.3V
IL(DC)-0.3VREF-0.15V
=
=
I
I
I
REF0.49*VDDQ0.51*VDDQV1
TT
I-22uA
OZ-55uA
OH-16.8mA
OL16.8mA
OH-9mA
VREF-0.04VREF+0.04V2
Notes 1. Includes ± 25mV margin for DC offset on VREF, and a combined total of ± 50mV margin for all AC noise and DC offset on VREF,
2.V
bandwidth limited to 20MHz. The DRAM must accommodate DRAM current spikes on V
TO V
REF, both of which may result in VREF noise. VREF should be de-coupled with an inductance of ≤ 3nH.
is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal to
TT
V
REF, and must track variations in the DC level of VREF
REF and internal DRAM noise coupled
3. VID is the magnitude of the difference between the input level on CK and the input level on CK.
4. These parameters should be tested at the pin on actual components and may be checked at either the pin or the pad in
simulation. The AC and DC input specifications are relative to a VREF envelop that has been bandwidth limited to 200MHZ.
* Module IDD was calculated on the basis of component IDD and can be differently measured according to DQ loading cap.
Rev. 1.2 March 2004
128MB, 256MB SODIMM
DDR SDRAM
AC Operating Conditions
Parameter/ConditionSymbolMin
Input High (Logic 1) Voltage, DQ, DQS and DM signalsVIH(AC)VREF + 0.31V3
Input Low (Logic 0) Voltage, DQ, DQS and DM signals.VIL(AC)VREF - 0.31V3
Input Differential Voltage, CK and CK inputsVID(AC)0.7VDDQ+0.6V1
Input Crossing Point Voltage, CK and CK inputsVIX(AC)0.5*VDDQ-0.20.5*VDDQ+0.2V2
Note 1. VID is the magnitude of the difference between the input level on CK and the input on CK.
2. The value of V
3. These parameters should be tested at the pim on actual components and may be checked at either the pin or the pad in simulation. the AC and DC input specificatims are refation to a Vref envelope that has been bandwidth limited 20MHz.
is expected to equal 0.5*V
IX
of the transmitting device and must track variations in the DC level of the same.
Row cycle timetRC606565ns
Refresh row cycle timetRFC727575ns
Row active timetRAS4270K45120K45120Kns
RAS to CAS delaytRCD182020ns
Row precharge timetRP182020ns
Row active to Row active delaytRRD121515ns
Write recovery timetWR151515ns
Last data in to Read commandtWTR111tCK
Col. address to Col. address delaytCCD111tCK
Clock cycle time
Clock high level widthtCH0 .450.550.450.550.450.55tCK
Clock low level widthtCL0.450.550.450.550.450.55tCK
DQS-out access time from CK/CKtDQSCK-0.6+0.6-0.75+0.75-0.75+0.75ns
Output data access time from CK/CKtAC-0.7+0.7-0.75+0.75-0.75+0.75ns
Data strobe edge to ouput data edgetDQSQ-0.45-0.5-0.5ns12
Read PreambletRPRE0.91.10.91.10.91.1tCK
Read PostambletRPST0.40.60.40.60.40.6tCK
CK to valid DQS-intDQSS0.751.250.751.250.751.25t CK
DQS-in setup timetWPRES000ns3
DQS-in hold timetWPRE0.250.250.25tCK
DQS falling edge to CK rising-setup timetDSS0.20.20.2tCK
DQS falling edge from CK rising-hold timetDSH0.20.20.2tCK
DQS-in high level widthtDQSH0.35 0.35 0.35 tCK
DQS-in low level widthtDQSL0.35 0.35 0.35 tCK
DQS-in cycle timetDSC0.91.10.91.10.91.1tCK
Address and Control Input setup time(fast)tIS0.750.90.9nsi,5.7~9
Address and Control Input hold time(fast)tIH0.750.90.9nsi,5.7~9
Address and Control Input setup time(slow)tIS0.81.01.0nsi, 6~9
Address and Control Input hold time(slow)tIH0.81.01.0nsi, 6~9
Data-out high impedence time from CK/CKtHZ+0.7 +0.75 +0.75ns1
Data-out low impedence time from CK/CKtLZ-0.7+0.7-0.75 +0.75-0.75 +0.75ns1
CL=2.0
CL=2.56127.5127.512ns
tCK
7.5127.5121012ns
Rev. 1.2 March 2004
128MB, 256MB SODIMM
DDR SDRAM
B3
ParameterSymbol
(DDR333@CL=2.5))
MinMaxMinMaxMinMax
Mode register set cycle timetMRD121515ns
DQ & DM setup time to DQStDS0.450.50.5nsj, k
DQ & DM hold time to DQStDH
Control & Address input pu lse widthtIPW2.22.22.2ns8
DQ & DM input pulse widthtDIPW1.751.751.75ns8
Power down exit timetPDEX67.57.5ns
Exit self refresh to non-Read command tXSNR757575ns
Exit self refresh to read commandtXSRD200200200tCK
Refresh interval timetREFI7.87.87.8us4
Output DQS valid windowtQH
Clock half periodtHP
Data hold skew factortQH S0.550.750.75ns11
DQS write postamble timetWPST0.40.60.40.60.40.6tCK2
Active to Read with Auto precharge
command
Autoprecharge write recovery +
Precharge timetDAL
tRAP18 2020
0.450.50.5
tHP
-tQHS
tCLmin
or tCHmin
(tWR/tCK)
+
(tRP/tCK)
-
or tCHmin
(tWR/tCK)
(tRP/tCK)
A2
(DDR266@CL=2.0)
tHP
-tQHS
tCLmin
+
B0
(DDR266@CL=2.5))
-
-
tHP
-tQHS
tCLmin
or tCHmin
(tWR/tCK)
+
(tRP/tCK)
UnitNote
ns
-ns11
-ns10, 11
tCK13
j, k
System Characteristics for DDR SDRAM
The following specification parameters are required in systems using DDR333 & DDR266 devices to ensure proper system performance. these characteristics are for system simulation purposes and are guaranteed by design.
Table 1 :Input Slew Rate for DQ, DQS, and DM
AC CHARACTERISTICSDDR333DDR266
PARAMETERSYMBOLMINMAXMINMAXUnitsNotes
DQ/DM/DQS input slew rate measured between
VIH(DC), VIL(DC) and VIL(DC), VIH(DC)
Table 2 : Input Setup & Hold Time Derating for Slew Rate
Input Slew RatetIStIHUnitsNotes
0.5 V/ns00psi
0.4 V/ns+500psi
0.3 V/ns+10 00psi
Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate
Input Slew RatetDStDHUnitsNotes
0.5 V/ns00psk
0.4 V/ns+75+75psk
0.3 V/ns+150+150psk
DCSLEWTBDTBDTBDTBDV/nsa, m
Rev. 1.2 March 2004
128MB, 256MB SODIMM
Table 4 : Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate
Table 7 : Output Slew Rate Matching Ratio Characteristics
AC CHARACTERISTICSDDR333DDR266
PARAMETERMINMAXMINMAXNotes
Output Slew Rate Matching Ratio (Pullup to Pulldown)TBDTBDTBDTBDe,m
Minimum
(V/ns)
Minimum
(V/ns)
Maximum
(V/ns)
Maximum
(V/ns)
Notes
Notes
DDR SDRAM
Rev. 1.2 March 2004
128MB, 256MB SODIMM
DDR SDRAM
Component Notes
1. tHZ and tLZ transitions occur in the same access time windows as valid data transitions. these parameters are not referenced to a
specific voltage level but specify when the device output in no longer driving (HZ), or begins driving (LZ).
2. The maximum limit for this parameter is not a device limit. The device will operate with a greater value for this parameter, but sys
tem performance (bus turnaround) will degrade accordingly.
3. The specific requirement is that DQS be valid (HIGH, LOW, or at some point on a valid transition) on or before this CK edge. A
valid transition is defined as monotonic and meeting the input slew rate specifications of the device. when no writes were previ
ously in progress on the bus, DQS will be tran sitioning from High- Z to logic LOW. If a previous write was in progress, DQS could
be HIGH, LOW, or transitioning from HIGH to LOW at this time, depending on tDQSS.
4. A maximum of eight AUTO REFRESH commands can be posted to any given DDR SDRAM device.
5. For command/address input slew rate ≥ 1.0 V/ns
6. For command/address input slew rate ≥ 0.5 V/ns and < 1.0 V/ns
7. For CK & CK
8. These parameters guarantee device timing, but they are not necessarily tested on each device. They may be guaranteed by
device design or tester correlation.
9. Slew Rate is measured between VOH(ac) and VOL(ac).
10. Min (tCL, tCH) refers to the smaller of the actual clock low time and the actual clock high time as provided to the device (i.e. this
value can be greater than the minimum specification limits for tCL and tCH).....For example, tCL and tCH are = 50% of the
period, less the half period jitter (tJIT(HP)) of the clock source, and less the half period jitter due to crosstalk (tJIT(crosstalk)) into
the clock traces.
11. tQH = tHP - tQHS, where:
tHP = minimum half clock period for any given cycle and is defined by clock high or clock low (tCH, tCL). tQHS accounts for 1) The
pulse duration distortion of on-chip clock circuits; and 2) The worst case push-out of DQS on one tansition followed by the worst
case pull-in of DQ on the next transition, both of which are, separately, due to data pin skew and output pattern effects, and p channel to n-channel variation of the output drivers.
12. tDQSQ
Consists of data pin skew and output pattern effects, and p-channel to n-channel variation of the output drivers for any given
cycle.
13. tDAL = (tWR/tCK) + (tRP/tCK)
For each of the terms above, if not already an integer, round to the next highest integer. Example: For DDR266B at CL=2.5 and
tCK=7.5ns tDAL = (15 ns / 7.5 ns) + (20 ns/ 7.5ns) = (2) + (3)
tDAL = 5 clocks
slew rate ≥ 1.0 V/ns
Rev. 1.2 March 2004
128MB, 256MB SODIMM
System Notes :
a. Pullup slew rate is characteristized under the test conditions as shown in Figure 1.
DDR SDRAM
Test point
Output
Ω
50
VSSQ
Figure 1 : Pullup slew rate test load
b. Pulldown slew rate is measured under the test conditions shown in Figure 2.
VDDQ
50Ω
Output
Test point
Figure 2 : Pulldown slew rate test load
c. Pullup slew rate is measured between (VDDQ/2 - 320 mV +/- 250 mV)
Pulldown slew rate is measured between (VDDQ/2 + 320 mV +/- 250 mV)
Pullup and Pulldown slew rate conditions are to be met for any pattern of data, including all outputs switching and only one output
switching.
Example : For typical slew rate, DQ0 is switching
For minmum slew rate, all DQ bits are switching from either high to low, or low to high.
The remaining DQ bits remain the same as for previous state.
d. Evaluation conditions
Typical : 25 °C (T Ambient), VDDQ = 2.5V, typical process
Minimum : 70 °C (T Ambient), VDDQ = 2.3V, slow - slow process
Maximum : 0 °C (T Ambient), VDDQ = 2.7V, fast - fast process
e. The ratio of pullup slew rate to pulldown slew rate is specified for the same temperature and voltage, over the entire temperature and
voltage range. For a given output, it represents the maximum dif f erence between pullup and pulldown drivers due to process variation.
f. Verified under typical conditions for qualification purposes.
g. TSOPII package divices only.
h. Only intended for operation up to 266 Mbps per pin.
i. A derating factor will be used to increase tIS and tIH in the case where the input slew rate is below 0.5V/ns
as shown in Table 2. The Input slew rate is based on the lesser of the slew rates detemined by either VIH(AC) to VIL(AC) or
VIH(DC) to VIL(DC), similarly for rising transitions.
j. A derating factor will be used to increase tDS and tDH in the case where DQ, DM, and DQS slew rates dif fer, as shown in Tables 3 & 4.
Input slew rate is based on the larger of AC-AC delta rise, fall rate and DC-DC delta rise, Input slew rate is based on the lesser of the
slew rates determined by either VIH(AC) to VIL(AC) or VIH(DC) to VIL(DC), similarly for rising transitions.
The delta rise/fall rate is calculated as: {1/(Slew Rate1)} - {1/(Slew Rate2)}
For example : If Slew Rate 1 is 0.5 V/ns and slew Rate 2 is 0.4 V/ns, then the delta rise, fall rate is - 0.5ns/V . Using the t able given, this
would result in the need for an increase in tDS and tDH of 100 ps.
k. Table 3 is used to increase tDS and tDH in the case where the I/O slew rate is below 0.5 V/ns. The I/O slew rate is based on the lesser
on the lesser of the AC - AC slew rate and the DC- DC slew rate. The inut slew rate is based on the lesser of the slew rates deter
mined by either VIH(ac) to VIL(ac) or VIH(DC) to VIL(DC), and similarly for rising transitions.
m. DQS, DM, and DQ input slew rate is specified to prevent double clocking of data and preserve setup and hold times. Signal transi
tions through the DC region must be monotoy.
Rev. 1.2 March 2004
128MB, 256MB SODIMM
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
Auto Precharge Disable
Auto Precharge EnableH4
Auto Precharge Disable
Auto Precharge EnableH4, 6
HXLHLHV
HXLHLLV
L
L
Column
Address
Column
Address
Burst StopHXLHHLX7
Precharge
Active Power Down
Bank Selection
All BanksXH5
EntryHL
HXLLHL
HX XX
VL
XLVVV
X
ExitLHXXXX
EntryHL
Precharge Power Down Mode
ExitLH
HX XX
LHHH
HX XX
LVVV
X
DMHXX8
No operation (NOP) : Not definedHX
HX XX
LHHH9
X
Note
3
3
4
4
9
Note : 1. OP Code : Operand Code. A0 ~ A12 & BA0 ~ BA1 : Program keys. (@EMRS/MRS)
2. EMRS/ MRS can be issued only at all banks precharge state.
A new command can be issued 2 clock cycles after EMRS or MRS.
3. Auto refresh functions are same as the 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. BA
If both BA
If BA
If BA
If both BA
5. If A
0 ~ BA1 : Bank select addresses.
0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected.
0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank B is selected.
0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank C is selected.
0 and BA1 are "High" at read, write, row active and precharge, bank D is selected.
10/AP is "High" at row precharge, BA0 and BA1 are ignored and all banks are selected.
6. During burst 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 t
RP after the end of burst.
7. Burst stop command is valid at every burst length.
8. DM sampled at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0).
9. This combination is not defined for any function, which means "No Operation(NOP)" in DDR SDRAM.