78FBGA with Lead-Free & Halogen-Free
(RoHS compliant)
datasheet
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- 1 -
Page 2
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
Revision History
Revision No.HistoryDraft DateRemarkEditor
1.0- First ReleaseAug. 2010-S.H.Kim
1.01- Changed note comment on page. 27, 35Aug. 2010-S.H.Kim
1.1- Corrected IDD current spec.(IDD7)Sep. 2010-S.H.Kim
1.2- Changed Input/Output capacitance on page 21.Sep. 2010-S.H.Kim
1.3- Changed 1866 speed bin table on page 26.Nov. 2010-S.H.Kim
7. Function Block Diagram:...............................................................................................................................................8
7.1 2GB, 256Mx64 Module (Populated as 1 rank of x8 DDR3 SDRAMs) ..................................................................... 8
7.2 4GB, 512Mx64 Module (Populated as 2 ranks of x8 DDR3 SDRAMs) ................................................................... 9
8. Absolute Maximum Ratings .......................................................................................................................................... 10
8.1 Absolute Maximum DC Ratings............................................................................................................................... 10
8.2 DRAM Component Operating Temperature Range ................................................................................................10
9. AC & DC Operating Conditions.....................................................................................................................................10
9.1 Recommended DC Operating Conditions (SSTL-15).............................................................................................. 10
10. AC & DC Input Measurement Levels ..........................................................................................................................11
10.1 AC & DC Logic Input Levels for Single-ended Signals.......................................................................................... 11
10.2 V
10.3 AC and DC Logic Input Levels for Differential Signals .......................................................................................... 13
10.3.2. Differential Swing Requirement for Clock (CK-CK
10.3.3. Single-ended Requirements for Differential Signals ...................................................................................... 14
10.3.4. Differential Input Cross Point Voltage ............................................................................................................ 15
10.4 Slew Rate Definition for Single Ended Input Signals .............................................................................................15
10.5 Slew rate definition for Differential Input Signals ...................................................................................................15
11. AC & DC Output Measurement Levels .......................................................................................................................16
11.1 Single Ended AC and DC Output Levels............................................................................................................... 16
11.2 Differential AC and DC Output Levels ................................................................................................................... 16
15. Electrical Characteristics and AC timing .....................................................................................................................22
15.1 Refresh Parameters by Device Density................................................................................................................. 22
15.2 Speed Bins and CL, tRCD, tRP, tRC and tRAS for Corresponding Bin ................................................................ 22
15.3 Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin ................................................................. 22
15.3.1. Speed Bin Table Notes .................................................................................................................................. 27
16. Timing Parameters by Speed Grade ..........................................................................................................................28
- DDR3-1866(13-13-13) is backward compatible to DDR3-1600(11-11-11), DDR3-1333(9-9-9), DDR3-1066(7-7-7)
- DDR3-1600(11-11-11) is backward compatible to DDR3-1333(9-9-9), DDR3-1066(7-7-7)
- DDR3-1333(9-9-9) is backward compatible to DDR3-1066(7-7-7)
2
DensityOrganizationComponent Composition
Number of
Rank
Height
2. Key Features
Speed
tCK(min)2.51.8751.51.251.07ns
CAS Latency6791113tCK
tRCD(min)1513.12513.513.7513.91ns
tRP(min)1513.12513.513.7513.91ns
tRAS(min)37.537.5363534ns
tRC(min)52.550.62549.548.7547.91ns
• JEDEC standard 1.5V ± 0.075V Power Supply
•V
= 1.5V ± 0.075V
DDQ
• 400MHz fCK for 800Mb/sec/pin, 533MHz fCK for 1066Mb/sec/pin, 667MHz fCK for 1333Mb/sec/pin, 800MHz fCK for 1600Mb/sec/pin,
933MHz fCK for 1866Mb/sec/pin
Data Masks/ Data strobes,
Termination data strobes
CKE0, CKE1 Clock Enables2DQS0-DQS7 Data strobes8
RAS
CAS
WE
S
0, S1Chip Selects2
A0-A9, A11,
A13-A15
A10/APAddress Input/Autoprecharge1
A12/BC
BA0-BA2SDRAM Bank Addresses3
Row Address Strobe1DQS0-DQS7 Data strobes complement8
Column Address Strobe1RESETReset Pin1
Write Enable1TEST
V
DD
Address Inputs14
Address Input/Burst chop1
V
V
REFDQ
V
REFCA
V
DDSPD
V
SS
TT
Logic Analyzer specific test pin (No connect
on SODIMM)
Core and I/O Power18
Ground52
Input/Output Reference2
SPD and Temp sensor Power1
Termination Voltage2
ODT0, ODT1 On-die termination control2NCReserved for future use3
SCLSerial Presence Detect (SPD) Clock Input1Total204
SDASPD Data Input/Output1
SA0-SA1SPD Address2
NOTE:
*The V
DD
and V
pins are tied common to a single power-plane on these designs.
DDQ
8
1
- 6 -
Page 7
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
6. Input/Output Functional Description
SymbolTy peFunction
CK0-CK1
-CK1
CK0
CKE0-CKE1Input
S
0-S1Input
AS, CAS, WEInput
R
BA0-BA2InputSelects which DDR3 SDRAM internal bank of eight is activated.
ODT0-ODT1InputAsserts on-die termination for DQ, DM, DQS, and DQS signals if enabled via the DDR3 SDRAM mode register.
A0-A9,
A10/AP,
A11
A12/BC
A13-A15
DQ0-DQ63I/O Data Input/Output pins.
DM0-DM7Input
DQS0-DQS7
DQS
0-DQS7
V
DD,VDDSPD,
V
SS
V
REFDQ,
V
REFCA
SDAI/O
SCLInputThis signal is used to clock data into and out of the SPD EEPROM and Temp sensor.
SA0-SA1InputAddress pins used to select the Serial Presence Detect and Temp sensor base address.
TESTI/O The TEST pin is reserved for bus analysis tools and is not connected on normal memory modules
RESET
Input
Input
I/O
SupplyPower supplies for core, I/O, Serial Presence Detect, Temp sensor, and ground for the module.
SupplyReference voltage for SSTL15 inputs.
InputRESET In Active Low This signal resets the DDR3 SDRAM
The system clock inputs. All address and command lines are sampled on the cross point of the rising edge of CK and
falling edge of CK. A Delay Locked Loop (DLL) circuit is driven from the clock inputs and output timing for read operations is synchronized to the input clock.
Activates the DDR3 SDRAM CK signal when high and deactivates the CK signal when low. By deactivating the clocks,
CKE low initiates the Power Down mode or the Self Refresh mode.
Enables the associated DDR3 SDRAM command decoder when low and disables the command decoder when high.
When the command decoder is disabled, new commands are ignored but previous operations continue. Rank 0 is
selected by S
When sampled at the cross point of the rising edge of CK and falling edge of CK
the operation to be executed by the SDRAM.
During a Bank Activate command cycle, defines the row address when sampled at the cross point of the rising edge of
CK and falling edge of CK
cross point of the rising edge of CK and falling edge of CK
autoprecharge operation at the end of the burst read or write cycle. If AP is high, autoprecharge is selected and BA0BAn defines the bank to be precharged. If AP is low, autoprecharge is disabled. During a Precharge command cycle,
AP is used in conjunction with BA0-BAn to control which bank(s) to precharge. If AP is high, all banks will be precharged regardless of the state of BA0-BAn inputs. If AP is low, then BA0-BAn are used to define which bank to precharge.A12(BC
performed (HIGH, no burst chop; LOW, burst chopped)
The data write masks, associated with one data byte. In Write mode, DM operates as a byte mask by allowing input
data to be written if it is low but blocks the write operation if it is high. In Read mode, DM lines have no effect.
The data strobes, associated with one data byte, sourced with data transfers. In Write mode, the data strobe is
sourced by the controller and is centered in the data window. In Read mode, the data strobe is sourced by the DDR3
SDRAMs and is sent at the leading edge of the data window. DQS
the crosspoint of respective DQS and DQS
This is a bidirectional pin used to transfer data into or out of the SPD EEPROM and Temp sensor. A resistor must be
connected from the SDA bus line to V
0; Rank 1 is selected by S1.
, signals CAS, RAS, and WE define
. During a Read or Write command cycle, defines the column address when sampled at the
. In addition to the column address, AP is used to invoke
) is sampled during READ and WRITE commands to determine if burst chop (on-the fly) will be
.
on the system planar to act as a pull up.
DDSPD
signals are complements, and timing is relative to
- 7 -
Page 8
Rev. 1.4
NOTE :
1. DQ wiring may differ from that shown however ,DQ, DM, DQS and DQS
relationships
are maintained as shown
V
SS
V
DD
D0 - D7
V
REFCA
V
DDSPD
SPD
CK0
V
REFDQ
D0 - D7
D0 - D7
D0 - D7, SPD
V
tt
CK0
CK1
CK1
S1
V
tt
D0 - D7
D0 - D7
NC
V
tt
V4V3V2V1
D7D6D5D4
V
tt
V4V3V2V1
D3D2D1D0
Address and Controllines
A0
A1
A2
SA0
SA1
SCL
SDA
WP
SCL
(SPD)
S0
RAS
CASWECK0
CK0
CKE0
ODT0
A[0:N]
/BA[0:N]
DQS0
DQS0
DM0
DQS
DQS
D0
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[0:7]
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
DQS1
DQS1
DM1
DQS
DQS
D4
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[8:15]
DQS2
DQS
2
DM2
DQS
DQS
D1
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
ZQ
DQ[0:7]
DM
240
Ω
± 1%
DQ[16:23]
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
DQS3
DQS
3
DM3
DQS
DQS
D5
ZQ
DQ[0:7]
DM
240
Ω
± 1%
DQ[24:31]
DQS4
DQS4
DM4
DQS
DQS
D2
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[32:39]
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
DQS5
DQS5
DM5
DQS
DQS
D6
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[40:47]
DQS6
DQS6
DM6
DQS
DQS
D3
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
ZQ
DQ[0:7]
DM
240
Ω
± 1%
DQ[48:55]
CS
RAS
CASWECKCKCKE
ODT
A[0:N]/BA[0:N]
DQS7
DQS7
DM7
DQS
DQS
D7
ZQ
DQ[0:7]
DM
240
Ω
± 1%
DQ[56:63]
Vtt
V
DD
Vtt
ODT1
NC
CKE1
NC
RESET
D0 - D7
Terminated near
card edge
Rank0
Unbuffered SODIMMdatasheetDDR3 SDRAM
7. Function Block Diagram:
7.1 2GB, 256Mx64 Module (Populated as 1 rank of x8 DDR3 SDRAMs)
- 8 -
Page 9
Rev. 1.4
S1
RAS
CASWECK1
CK1
CKE1
ODT1
A[0:N]
/BA[0:N]
S0
CK0
CK0
CKE0
ODT0
DQS3
DQS3
DM3
DQS
DQS
D11
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[24:31]
D3
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
Vtt
V
DD
Vtt
Rank0
Rank1
V
SS
V
DD
D0 - D15
V
REFCA
V
DDSPD
SPD
CK0
V
REFDQ
D0 - D15
D0 - D15
D0 - D15, SPD
V
tt
CK1
CK0
CK1
RESET
V
tt
D8 - D15
D0 - D7
D0 - D7
D8 - D15
D0 - D7
DQS
DQS
DQ[0:7]
DM
DQS1
DQS1
DM1
DQS
DQS
D1
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240
Ω
± 1%
DQ[8:15]
D9
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS0
DQS0
DM0
DQS
DQS
D0
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[0:7]
D8
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS2
DQS2
DM2
DQS
DQS
D2
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
DQ[16:23]
D10
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS
DQS
D4
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
D12
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS
DQS
D14
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240
Ω
± 1%
D6
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS
DQS
D15
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
D7
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS
DQS
D13
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
DQ[0:7]
DM
240Ω
± 1%
D5
CS
RAS
CASWECKCKCKE
ODT
A[N:0]/BA[N:0]
ZQ
240Ω
± 1%
DQS
DQS
DQ[0:7]
DM
DQS4
DQS4
DM4
DQ[32:39]
DQS6
DQS6
DM6
DQ[48:55]
DQS7
DQS7
DM7
DQ[56:63]
DQS5
DQS5
DM5
DQ[40:47]
V
DD
Vtt
A0
A1
A2
SA0
SA1
SCL
SDA
WP
SCL
(SPD)
V7
V8
V5
V6
V2
V3
D6D12D3D9
V
tt
Address and Controllines
D7D5D10D8
V1
V4
V9
V7
V6
V9
V8
V4
V3
D15D13D2D0
D14D4D11D1
V1
V2
V5
V1
NOTE :
1. DQ wiring may differ from that shown however ,DQ, DM, DQS and DQS
relationships are maintained as shown
Unbuffered SODIMMdatasheetDDR3 SDRAM
7.2 4GB, 512Mx64 Module (Populated as 2 ranks of x8 DDR3 SDRAMs)
- 9 -
Page 10
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
8. Absolute Maximum Ratings
8.1 Absolute Maximum DC Ratings
SymbolParameter RatingUnitsNOTE
V
DD
V
Voltage on V
DDQ
V
NOTE :
1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
2. Storage Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51-2 standard.
3. VDD and V
equal to or less than 300mV.
Voltage on any pin relative to V
IN, VOUT
T
Storage Temperature -55 to +100°C 1, 2
STG
DDQ
Voltage on VDD pin relative to V
pin relative to V
DDQ
must be within 300mV of each other at all times;and V
SS
SS
SS
must be not greater than 0.6 x V
REF
8.2 DRAM Component Operating Temperature Range
SymbolParameterratingUnitNOTE
T
OPER
NOTE :
1. Operating Temperature T
JESD51-2.
2. The Normal Temperature Range specifies the temperatures where all DRAM specifications will be supported. During operation, the DRAM case temperature must be maintained between 0-85°C under all operating conditions
3. Some applications require operation of the Extended Temperature Range between 85°C and 95°C case temperature. Full specifications are guaranteed in this range, but the
following additional conditions apply:
a) Refresh commands must be doubled in frequency, therefore reducing the refresh interval tREFI to 3.9us.
b) If Self-Refresh operation is required in the Extended Temperature Range, then it is mandatory to either use the Manual Self-Refresh mode with Extended Temperature
Range capability (MR2 A6 = 0b and MR2 A7 = 1b), in this case IDD6 current can be increased around 10~20% than normal Temperature range.
is the case surface temperature on the center/top side of the DRAM. For measurement conditions, please refer to the JEDEC document
OPER
Operating Temperature Range 0 to 95°C1, 2, 3
-0.4 V ~ 1.975 VV 1,3
-0.4 V ~ 1.975 VV 1,3
-0.4 V ~ 1.975 VV 1
, When VDD and V
DDQ
are less than 500mV; V
DDQ
REF
may be
9. AC & DC Operating Conditions
9.1 Recommended DC Operating Conditions (SSTL-15)
SymbolParameter
V
DD
V
DDQ
NOTE:
1. Under all conditions V
2. V
tracks with VDD. AC parameters are measured with VDD and V
DDQ
Supply Voltage1.4251.51.575V1,2
Supply Voltage for Output1.4251.51.575V1,2
must be less than or equal to VDD.
DDQ
tied together.
DDQ
Min.Typ . Max.
Rating
UnitsNOTE
- 10 -
Page 11
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
10. AC & DC Input Measurement Levels
10.1 AC & DC Logic Input Levels for Single-ended Signals
[ Table 1 ] Single-ended AC & DC input levels for Command and Address
SymbolParameter
V
(DC100)
IH.CA
(DC100)
V
IL.CA
V
(AC175)
IH.CA
(AC175)
V
IL.CA
(AC150)
V
IH.CA
V
(AC150)
IL.CA
V
(AC135)
IH.CA
(AC135)
V
IL.CA
(AC125)
V
IH.CA
(AC125)
V
IL.CA
V
REFCA
NOTE :
1. For input only pins except RESET
2. See ’Overshoot/Undershoot Specification’ on page 18.
3. The AC peak noise on V
4. For reference : approx. V
5. V
(dc) is used as a simplified symbol for V
IH
6. V
(dc) is used as a simplified symbol for V
IL
7. V
(ac) is used as a simplified symbol for V
IH
(AC150) value is used when VREF + 150mV is referenced, V
, V
IH.CA
VREF + 125mV is referenced.
(ac) is used as a simplified symbol for V
8. V
IL
enced, V
when V
REF
DC input logic high
DC input logic low
AC input logic high
AC input logic lowNote 2
AC input logic high
AC input logic low Note 2
AC input logic high --
AC input logic low --Note 2
AC input logic high --
AC input logic low --Note 2
Reference Voltage for ADD,
(DC)
CMD inputs
, V
may not allow V
REF
/2 ± 15mV
DD
(AC150) value is used when V
IL.CA
- 125mV is referenced.
REF
= V
(DC)
REFCA
to deviate from V
REF
(DC100)
IH.CA
(DC100)
IL.CA
(AC175), V
IH.CA
(AC175) and V
IL.CA
- 150mV is referenced, V
REF
DDR3-800/1066/1333/1600DDR3-1866
Min.Max.Min.Max.
V
+ 100V
REF
V
SS
V
+ 175
REF
V
+150
REF
0.49*V
DD
(DC) by more than ± 1% VDD (for reference : approx. ± 15mV)
REF
(AC150), V
IH.CA
IL.CA
IH.CA
(AC135) value is used when VREF + 135mV is referenced and V
IH.CA
(AC150), V
DD
V
- 100V
REF
Note 2--mV1,2,7
V
- 175
REF
Note 2--
V
-150
REF
0.51*V
DD
(AC135) and V
(AC135) and V
IL.CA
(AC135) value is used when V
IL.CA
IH.CA
(AC125); V
(AC125); V
IL.CA
V
+ 100V
REF
SS
--mV1,2,8
--
V
+ 135
REF
V
+125
REF
0.49*V
DD
(AC175) value is used when V
IH.CA
(AC175) value is used when V
IL.CA
- 135mV is referenced and V
REF
UnitNOTE
DD
V
- 100
REF
mV1,5
mV1,6
mV1,2,7
mV1,2,8
Note 2mV1,2,7
V
- 135
REF
Note 2
V
-125
REF
0.51*V
DD
REF
(AC125) value is used when
IH.CA
IL.CA
mV1,2,8
mV1,2,7
mV1,2,8
V3,4
+ 175mV is referenced
- 175mV is refer-
REF
(AC125) value is used
[ Table 2 ]
Single-ended AC & DC input levels for DQ and DM
SymbolParameter
V
(DC100)
IH.DQ
V
(DC100)
IL.DQ
(AC175)
V
IH.DQ
(AC175)
V
IL.DQ
(AC150)
V
IH.DQ
(AC150)
V
IL.DQ
V
(AC135)
IH.DQ
(AC135)
V
IL.DQ
V
REF
DQ
NOTE :
1. For input only pins except RESET
2. See ’Overshoot/Undershoot Specification’ on page 18.
3. The AC peak noise on V
4. For reference : approx. V
(dc) is used as a simplified symbol for V
5. V
IH
6. V
(dc) is used as a simplified symbol for V
IL
(ac) is used as a simplified symbol for V
7. V
IH
V
(AC150) value is used when V
IH.DQ
(ac) is used as a simplified symbol for V
8. V
IL
V
- 150mV is referenced.
REF
DC input logic high
DC input logic low
AC input logic high
AC input logic lowNOTE 2
AC input logic high
AC input logic lowNOTE 2
AC input logic high ----
AC input logic low----NOTE 2
Reference Voltage for DQ,
(DC)
DM inputs
, V
may not allow V
REF
/2 ± 15mV
DD
REF
= V
REF
(DC)
REFDQ
to deviate from V
REF
(DC100)
IH.DQ
(DC100)
IL.DQ
IH.DQ
+ 150mV is referenced.
(AC175), V
IL.DQ
DDR3-800/1066DDR3-1333/1600DDR3-1866
Min.Max.Min.Max.Min.Max.
V
+ 100V
REF
V
SS
V
+ 175
REF
V
+ 150
REF
0.49*V
(AC175), V
IL.DQ
DD
V
- 100V
REF
NOTE 2----mV1,2,7
V
- 175
REF
NOTE 2
V
- 150
REF
0.51*V
DD
(DC) by more than ± 1% VDD (for reference : approx. ± 15mV)
REF
(AC150) and V
IH.DQ
(AC150) ; V
IL.DQ
V
+ 100V
REF
SS
V
----mV1,2,8
V
+ 150
REF
DD
V
0.51*V
IH.DQ
NOTE 2
0.49*V
DD
(AC135) ; V
IH.DQ
(AC175) value is used when V
V
DD
- 100V
REF
+ 100V
REF
SS
NOTE 2--mV1,2,7
- 150
REF
DD
(AC175) value is used when V
- 175mV is referenced, V
REF
--mV1,2,8
V
+ 135
REF
0.49*V
DD
Unit NOTE
mV1,5
mV1,6
V
REF
DD
- 100
NOTE 2mV1,2,7
V
- 135
REF
0.51*V
+ 175mV is referenced,
REF
(AC150) value is used when
IL.DQ
DD
mV1,2,8
V3,4
- 11 -
Page 12
Rev. 1.4
voltage
V
DD
V
SS
time
Unbuffered SODIMMdatasheetDDR3 SDRAM
10.2 V
Tolerances.
REF
The dc-tolerance limits and ac-noise limits for the reference voltages V
V
(t) as a function of time. (V
REF
V
(DC) is the linear average of V
REF
thermore V
(t) may temporarily deviate from V
REF
stands for V
REF
REF
REFCA
and V
REFDQ
likewise).
(t) over a very long period of time (e.g. 1 sec). This average has to meet the min/max requirements of V
(DC) by no more than ± 1% VDD.
REF
REFCA
and V
are illustrate in Figure 1. It shows a valid reference voltage
REFDQ
REF
. Fur-
Figure 1. Illustration of VREF(DC) tolerance and VREF ac-noise limits
The voltage levels for setup and hold time measurements VIH(AC), VIH(DC), VIL(AC) and VIL(DC) are dependent on V
" shall be understood as V
"V
REF
This clarifies, that dc-variations of V
which setup and hold is measured. System timing and voltage budgets need to account for V
(DC), as defined in Figure 1.
REF
affect the absolute voltage a signal has to reach to achieve a valid high or low level and therefore the time to
REF
(DC) deviations from the optimum position within the
REF
REF
.
data-eye of the input signals.
This also clarifies that the DRAM setup/hold specification and derating values need to include time and voltage associated with V
Timing and voltage effects due to ac-noise on V
up to the specified limit (+/-1% of VDD) are included in DRAM timings and their associated deratings.
REF
ac-noise.
REF
- 12 -
Page 13
Rev. 1.4
0.0
tDVAC
V
IH
.DIFF.MIN
half cycle
Differential Input Voltage (i.e. DQS-DQS, CK-CK)
time
tDVAC
VIH.DIFF.AC.MIN
V
IL
.DIFF.MAX
V
IL
.DIFF.AC.MAX
Unbuffered SODIMMdatasheetDDR3 SDRAM
10.3 AC and DC Logic Input Levels for Differential Signals
10.3.1 Differential Signals Definition
Figure 2. Definition of differential ac-swing and "time above ac level" tDVAC
10.3.2 Differential Swing Requirement for Clock (CK-CK) and Strobe (DQS-DQS)
SymbolParameter
V
IHdiff
V
ILdiff
V
(AC)
IHdiff
V
(AC)
ILdiff
NOTE :
1. Used to define a differential signal slew-rate.
2. for CK - CK
then the reduced level applies also here.
3. These values are not defined, however they single-ended signals CK, CK
nals as well as the limitations for overshoot and undershoot. Refer to "overshoot and Undershoot Specification"
use VIH/VIL(AC) of ADD/CMD and V
differential input high+0.2NOTE 3 V1
differential input low NOTE 3 -0.2 V1
differential input high ac
2 x (VIH(AC) - V
differential input low acNOTE 3
; for DQS - DQS use VIH/VIL(AC) of DQs and V
REFCA
[ Table 3 ] Allowed time before ringback (tDVAC) for CK - CK and DQS - DQS.
tDVAC [ps] @ |V
Slew Rate [V/ns]
> 4.075-175-TBD-TBD-
4.057-170-TBD-TBD-
= 350mV
minmaxminmaxminmaxminmax
IH/Ldiff
(AC)|
tDVAC [ps] @ |V
3.050-167-TBD-TBD-
2.038-163-TBD-TBD-
1.834-162-TBD-TBD-
1.629-161-TBD-TBD-
1.422-159-TBD-TBD-
1.213-155-TBD-TBD-
1.00-150-TBD-TBD-
< 1.00-150-TBD-TBD-
DDR3-800/1066/1333/1600/1866
minmax
)
REF
, DQS, DQS need to be within the respective limits (VIH(DC) max, VIL(DC)min) for single-ended sig-
IH/Ldiff
(AC)|
tDVAC [ps] @ |V
= 300mV
NOTE 3V2
2 x (VIL(AC) - V
; if a reduced ac-high or ac-low level is used for a signal group,
REFDQ
REF
IH/Ldiff
)
(AC)|
= 270mV
unitNOTE
tDVAC [ps] @ |V
V2
(AC)|
IH/Ldiff
= 250mV
- 13 -
Page 14
Rev. 1.4
VDD or V
DDQ
V
SEH
min
V
DD
/2 or V
DDQ
/2
V
SEL
max
V
SEH
VSS or V
SSQ
V
SEL
CK or DQS
time
Unbuffered SODIMMdatasheetDDR3 SDRAM
10.3.3 Single-ended Requirements for Differential Signals
Each individual component of a differential signal (CK, DQS, CK, DQS) has also to comply with certain requirements for single-ended signals.
CK and CK
have to approximately reach V
half-cycle.
DQS, DQS
have to reach V
SEH
min / V
ing a valid transition.
Note that the applicable ac-levels for ADD/CMD and DQ’s might be different per speed-bin etc. E.g. if V
signals, then these ac-levels apply also for the single-ended signals CK and CK
min / V
SEH
max (approximately the ac-levels ( VIH(AC) / VIL(AC) ) for DQ signals) in every half-cycle proceeding and follow-
SEL
max (approximately equal to the ac-levels ( VIH(AC) / VIL(AC) ) for ADD/CMD signals) in every
SEL
150(AC)/VIL150(AC) is used for ADD/CMD
IH
.
Figure 3. Single-ended requirement for differential signals
Note that while ADD/CMD and DQ signal requirements are with respect to V
with respect to V
ended components of differential signals the requirement to reach V
/2; this is nominally the same. The transition of single-ended signals through the ac-levels is used to measure setup time. For single-
DD
SEL
, the single-ended components of differential signals have a requirement
REF
max, V
min has no bearing on timing, but adds a restriction on the common
3. These values are not defined, however the single-ended signals CK, CK
nals as well as the limitations for overshoot and undershoot. Refer to "Overshoot and Undershoot Specification"
use VIH/VIL(AC) of ADD/CMD; for strobes (DQS, DQS) use VIH/VIL(AC) of DQs.
(AC)/VIL(AC) for DQs is based on V
Single-ended high-level for strobes
Single-ended high-level for CK, CK
Single-ended low-level for strobesNOTE3
Single-ended low-level for CK, CK
; VIH(AC)/VIL(AC) for ADD/CMD is based on V
REFDQ
(V
(VDD/2)+0.175
, DQS, DQS need to be within the respective limits (VIH(DC) max, VIL(DC)min) for single-ended sig-
DDR3-800/1066/1333/1600/1866
MinMax
/2)+0.175
DD
NOTE3
; if a reduced ac-high or ac-low level is used for a signal group, then the
REFCA
UnitNOTE
NOTE3V1, 2
NOTE3V1, 2
/2)-0.175
(V
(V
DD
/2)-0.175
DD
V1, 2
V1, 2
- 14 -
Page 15
Rev. 1.4
V
DD
CK, DQS
VDD/2
CK, DQS
V
SS
V
IX
V
IX
V
IX
V
IHdiffmin
0
V
ILdiffmax
delta TRdiff
delta TFdiff
Unbuffered SODIMMdatasheetDDR3 SDRAM
10.3.4 Differential Input Cross Point Voltage
To guarantee tight setup and hold times as well as output skew parameters with respect to clock and strobe, each cross point voltage of differential input
signals (CK, CK
cross point of true and complement signal to the mid level between of V
[ Table 5 ] Cross point voltage for differential input signals (CK, DQS)
SymbolParameter
V
IX
V
IX
NOTE :
1. Extended range for V
±250 mV, and the differential slew rate of CK-CK
2. The relation between V
(V
/2) + VIX(Min) - V
DD
- ((VDD/2) + VIX(Max)) ≥ 25mV
V
SEH
and DQS, DQS) must meet the requirements in below table. The differential input cross point voltage VIX is measured from the actual
and VSS.
DD
Figure 4. VIX Definition
Differential Input Cross Point Voltage relative to VDD/2 for CK,CK
Differential Input Cross Point Voltage relative to VDD/2 for DQS,DQS
is only allowed for clock and if single-ended clock input signals CK and CK are monotonic, have a single-ended swing V
IX
Min/Max and V
IX
≥ 25mV
SEL
is larger than 3 V/ ns.
should satisfy following.
SEL/VSEH
DDR3-800/1066/1333/1600/1866
MinMax
-150150mV2
-175175mV1
-150150mV2
SEL
/ V
UnitNOTE
of at least VDD/2
SEH
10.4 Slew Rate Definition for Single Ended Input Signals
See "Address / Command Setup, Hold and Derating" for single-ended slew rate definitions for address and command signals.
See "Data Setup, Hold and Slew Rate Derating" for single-ended slew rate definitions for data signals.
10.5 Slew rate definition for Differential Input Signals
Input slew rate for differential signals (CK, CK and DQS, DQS) are defined and measured as shown in below.
(AC)AC differential output high measurement level (for output SR)+0.2 x V
V
OHdiff
V
(AC)AC differential output low measurement level (for output SR)-0.2 x V
OLdiff
NOTE : 1. The swing of +/-0.2xV
load of 25Ω to V
TT=VDDQ
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω and an effective test
DDQ
/2 at each of the differential outputs.
DDQ
DDQ
V
V
V
V1
V1
V1
V1
11.3 Single-ended Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between VOL(AC) and VOH(AC)
for single ended signals as shown in below.
[ Table 9 ] Single ended Output slew rate definition
Description
Single ended output slew rate for rising edge
Single ended output slew rate for falling edge
NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 10 ] Single ended output slew rate
ParameterSymbol
DDR3-800DDR3-1066DDR3-1333DDR3-1600DDR3-1866
MinMaxMinMaxMinMaxMinMaxMinMax
Single ended output slew rate SRQse2.552.552.552.552.5
Description : SR : Slew Rate
Q : Query Output (like in DQ, which stands for Data-in, Query-Output)
se : Single-ended Signals
For Ron = RZQ/7 setting
NOTE : 1) In two cased, a maximum slew rate of 6V/ns applies for a single DQ signal within a byte lane.
- Case_1 is defined for a single DQ signal within a byte lane which is switching into a certain direction (either from high to low of low to high) while all remaining DQ
- Case_2 is defined for a single DQ signals in the same byte lane are switching into the opposite direction (i.e. from low to high or high to low respectively). For the
signals in the same byte lane are static (i.e they stay at either high or low).
remaining DQ signal switching into the opposite direction, the regular maximum limit of 5 V/ns applies.
Operating One Bank Active-Precharge Current
CKE: High; External clock: On; tCK, nRC, nRAS, CL: Refer to Component Datasheet for detail pattern ; BL: 8
Command, Address, Bank Address Inputs: partially toggling ; Data IO: FLOATING; DM:stable at 0; Bank Activity: Cycling with one bank active at a time:
0,0,1,1,2,2,... ; Output Buffer and RTT: Enabled in Mode Registers
2)
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pat-
tern
Operating One Bank Active-Read-Precharge Current
CKE: High; External clock: On; tCK, nRC, nRAS, nRCD, CL: Refer to Component Datasheet for detail pattern ; BL: 8
and PRE; Command, Address, Bank Address Inputs, Data IO: partially toggling ; DM:stable at 0; Bank Activity: Cycling with one bank active at a time:
0,0,1,1,2,2,... ; Output Buffer and RTT: Enabled in Mode Registers
2)
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pat-
tern
Precharge Standby Current
CKE: High; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
Address Inputs: partially toggling ; Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode
2)
Registers
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pattern
Precharge Power-Down Current Slow Exit
CKE: Low; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
Address Inputs: stable at 0; Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers
ODT Signal: stable at 0; Precharge Power Down Mode: Slow Exit
3)
Precharge Power-Down Current Fast Exit
CKE: Low; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
Address Inputs: stable at 0; Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers
ODT Signal: stable at 0; Precharge Power Down Mode: Fast Exit
3)
Precharge Quiet Standby Current
CKE: High; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
Address Inputs: stable at 0; Data IO: FLOATING; DM:stable at 0;Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers
ODT Signal: stable at 0
Active Standby Current
CKE: High; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
Address Inputs: partially toggling ; Data IO: FLOATING; DM:stable at 0;Bank Activity: all banks open; Output Buffer and RTT: Enabled in Mode
2)
Registers
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pattern
Active Power-Down Current
CKE: Low; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
1)
; AL: 0; CS: stable at 1; Command, Address, Bank
Address Inputs: stable at 0; Data IO: FLOATING;DM:stable at 0; Bank Activity: all banks open; Output Buffer and RTT: Enabled in Mode Registers
Signal: stable at 0
Operating Burst Read Current
CKE: High; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
1)
; AL: 0; CS: High between RD; Command, Address,
Bank Address Inputs: partially toggling ; Data IO: seamless read data burst with different data between one burst and the next one ; DM:stable at 0; Bank
Activity: all banks open, RD commands cycling through banks: 0,0,1,1,2,2,... ; Output Buffer and RTT: Enabled in Mode Registers
at 0; Pattern Details: Refer to Component Datasheet for detail pattern
Operating Burst Write Current
CKE: High; External clock: On; tCK, CL: Refer to Component Datasheet for detail pattern ; BL: 8
1)
; AL: 0; CS: High between WR; Command, Address,
Bank Address Inputs: partially toggling ; Data IO: seamless write data burst with different data between one burst and the next one ; DM: stable at 0; Bank
Activity: all banks open, WR commands cycling through banks: 0,0,1,1,2,2,... ; Output Buffer and RTT: Enabled in Mode Registers
; Pattern Details: Refer to Component Datasheet for detail pattern
at HIGH
Burst Refresh Current
CKE: High; External clock: On; tCK, CL, nRFC: Refer to Component Datasheet for detail pattern ; BL: 8
Address, Bank Address Inputs: partially toggling ; Data IO: FLOATING;DM:stable at 0; Bank Activity: REF command every nRFC ; Output Buffer and
RTT: Enabled in Mode Registers
Self Refresh Current: Normal Temperature Range
TCASE: 0 - 85°C; Auto Self-Refresh (ASR): DisabledLOW; CL: Refer to Component Datasheet for detail pattern ; BL: 8
Bank Activity: Self-Refresh operation; Output Buffer and RTT: Enabled in Mode Registers
Self-Refresh Current: Extended Temperature Range (optional)
TCASE: 0 - 95°C; Auto Self-Refresh (ASR): Disabled4); Self-Refresh Temperature Range (SRT): Extended5); CKE: Low; External clock: Off; CK and CK:
LOW; CL: Refer to Component Datasheet for detail pattern ; BL: 8
2)
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pattern
4)
; Self-Refresh Temperature Range (SRT): Normal5); CKE: Low; External clock: Off; CK and CK:
1)
; AL: 0; CS, Command, Address, Bank Address,Data IO: FLOATING;DM:stable at 0;
6)
1)
; AL: 0; CS, Command, Address, Bank Address, Data IO: FLOATING;DM:stable at 0;
2)
; ODT Signal: FLOATING
Bank Activity: Extended Temperature Self-Refresh operation; Output Buffer and RTT: Enabled in Mode Registers
between ACT and RDA; Command, Address, Bank Address Inputs: partially toggling ; Data IO: read data bursts with different data between one burst and
the next one ; DM:stable at 0; Bank Activity: two times interleaved cycling through banks (0, 1, ...7) with different addressing ; Output Buffer and RTT:
Enabled in Mode Registers
2)
; ODT Signal: stable at 0; Pattern Details: Refer to Component Datasheet for detail pattern
RESET Low Current
RESET : Low; External clock : off; CK and CK
: LOW; CKE : FLOATING ; CS, Command, Address, Bank Address, Data IO : FLOATING ; ODT Signal :
FLOATING
1)
; AL: 0; CS: High between ACT and PRE;
1)
; AL: 0; CS: High between ACT, RD
2)
; ODT Signal: stable
2)
; ODT Signal: stable
1)
; AL: 0; CS: High between REF; Command,
2)
; ODT Signal: FLOATING
1)
; AL: CL-1; CS: High
2)
; ODT
2)
;
2)
;
2)
;
- 18 -
Page 19
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
NOTE :
1) Burst Length: BL8 fixed by MRS: set MR0 A[1,0]=00B
2) Output Buffer Enable: set MR1 A[12] = 0B; set MR1 A[5,1] = 01B; RTT_Nom enable: set MR1 A[9,6,2] = 011B; RTT_Wr enable: set MR2 A[10,9] = 10B
3) Precharge Power Down Mode: set MR0 A12=0B for Slow Exit or MR0 A12=1B for Fast Exit
4) Auto Self-Refresh (ASR): set MR2 A6 = 0B to disable or 1B to enable feature
5) Self-Refresh Temperature Range (SRT): set MR2 A7=0B for normal or 1B for extended temperature range
6) Refer to DRAM supplier data sheet and/or DIMM SPD to determine if optional features or requirements are supported by DDR3 SDRAM device
7) IDD current measure method and detail patterns are described on DDR3 component datasheet
8) VDD and VDDQ are merged on module PCB.
9) DIMM IDD SPEC is measured with Qoff condition
(IDDQ values are not considered)
- 19 -
Page 20
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
13. IDD SPEC Table
M471B5773DH0 : 2GB (256Mx64) Module
Symbol
IDD0280320360400mA
IDD1360400440480mA
IDD2P0(slow exit)96969696mA
IDD2P1(fast exit)120120120136mA
IDD2N136160160160mA
IDD2Q136160160160mA
IDD3P136136160160mA
IDD3N240280280296mA
IDD4R520600720800mA
IDD4W560640760880mA
IDD5B880920960960mA
IDD696969696mA
IDD7840108011201160mA
IDD896969696mA
(DDR3-1066@CL=7)
CF8
CH9
(DDR3-1333@CL=9)
CK0
(DDR3-1600@CL=11)
CMA
(DDR3-1866@CL=13)
UnitNOTE
M471B5273DH0 : 4GB (512Mx64) Module
Symbol
IDD0416480520560mA1
IDD1496560600640mA1
IDD2P0(slow exit)192192192192mA
IDD2P1(fast exit)240240240272mA
IDD2N272320320320mA
IDD2Q272320320320mA
IDD3P272272320320mA
IDD3N376440440456mA
IDD4R656760880960mA1
IDD4W6968009201040mA1
IDD5B1016108011201120mA1
IDD6192192192192mA
IDD7976124012801320mA1
IDD8192192192192mA
NOTE :
1. DIMM IDD SPEC is calculated with considering de-actived rank(IDLE) is IDD2N.
(DDR3-1066@CL=7)
CF8
CH9
(DDR3-1333@CL=9)
CK0
(DDR3-1600@CL=11)
CMA
(DDR3-1866@CL=13)
UnitNOTE
- 20 -
Page 21
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
14. Input/Output Capacitance
[ Table 13 ] Input/Output Capacitance
ParameterSymbol
Input/output capacitance
(DQ, DM, DQS, DQS
, TDQS, TDQS)
Input capacitance
(CK and CK)
Input capacitance delta
(CK and CK)
Input capacitance
(All other input-only pins)
Input capacitance delta
(DQS and DQS)
Input capacitance delta
(All control input-only pins)
Input capacitance delta
(all ADD and CMD input-only pins)
12. Maximum external load capacitance on ZQ pin: 5pF
applied and all other pins floating (except the pin under test, CKE, RESET and ODT as necessary). VDD=V
SSQ
DDR3-800DDR3-1066DDR3-1333DDR3-1600DDR3-1866
MinMaxMinMaxMinMaxMinMaxMinMax
=1.5V, V
DDQ
BIAS=VDD
Units NOTE
/2 and on-die
- 21 -
Page 22
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
15. Electrical Characteristics and AC timing
(0 °C<T
15.1 Refresh Parameters by Device Density
All Bank Refresh to active/refresh cmd timetRFC110160260350ns
Average periodic refresh intervaltREFI
NOTE :
1. Users should refer to the DRAM supplier data sheet and/or the DIMM SPD to determine if DDR3 SDRAM devices support the following options or requirements referred to in
this material.
15.2 Speed Bins and CL, tRCD, tRP, tRC and tRAS for Corresponding Bin
15.3 Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin
DDR3 SDRAM Speed Bins include tCK, tRCD, tRP, tRAS and tRC for each corresponding bin.
[ Table 14 ] DDR3-800 Speed Bins
SpeedDDR3-800
UnitsNOTECL-nRCD-nRP6 - 6 - 6
ParameterSymbolminmax
Internal read command to first datatAA1520ns
ACT to internal read or write delay timetRCD15-ns
PRE command periodtRP15-ns
ACT to ACT or REF command periodtRC52.5-ns
ACT to PRE command periodtRAS37.59*tREFIns
CL = 5CWL = 5tCK(AVG)3.03.3ns1,2,3,4,10,11
CL = 6CWL = 5tCK(AVG)2.53.3ns1,2,3
Supported CL Settings5, 6nCK
Supported CWL Settings5nCK
- 22 -
Page 23
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
[ Table 15 ] DDR3-1066 Speed Bins
SpeedDDR3-1066
UnitsNOTECL-nRCD-nRP7 - 7 - 7
ParameterSymbolminmax
Internal read command to first datatAA13.12520ns
ACT to internal read or write delay timetRCD13.125-ns
PRE command periodtRP13.125-ns
ACT to ACT or REF command periodtRC50.625-ns
ACT to PRE command periodtRAS37.59*tREFIns
CL = 5
CL = 6
CL = 7
CL = 8
Supported CL Settings5, 6,7,8nCK
Supported CWL Settings5,6nCK
CWL = 5tCK(AVG)3.03.3ns1,2,3,4,5,10,11
CWL = 6tCK(AVG)Reservedns4
CWL = 5tCK(AVG)2.53.3ns1,2,3,5
CWL = 6tCK(AVG)Reservedns1,2,3,4
CWL = 5tCK(AVG)Reservedns4
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,4,9
CWL = 5tCK(AVG)Reservedns4
CWL = 6tCK(AVG)1.875<2.5ns1,2,3
- 23 -
Page 24
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
[ Table 16 ] DDR3-1333 Speed Bins
SpeedDDR3-1333
UnitsNOTECL-nRCD-nRP9 -9 - 9
ParameterSymbolminmax
Internal read command to first datatAA
ACT to internal read or write delay timetRCD
PRE command periodtRP
ACT to ACT or REF command periodtRC
ACT to PRE command periodtRAS369*tREFIns
CL = 5
CWL = 5tCK(AVG)3.03.3ns1,2,3,4,6,10,11
CWL = 6,7tCK(AVG)Reservedns4
CWL = 5tCK(AVG)2.53.3ns1,2,3,6
CL = 6
CWL = 6tCK(AVG)Reservedns1,2,3,4,6
CWL = 7tCK(AVG)Reservedns4
CWL = 5tCK(AVG)Reservedns4
CL = 7
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,4,6
CWL = 7tCK(AVG)Reservedns1,2,3,4
CWL = 5tCK(AVG)Reservedns4
CL = 8
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,6
CWL = 7tCK(AVG)Reservedns1,2,3,4
CL = 9
CL = 10
CWL = 5,6tCK(AVG)Reservedns4
CWL = 7tCK(AVG)1.5<1.875ns1,2,3,4,9
CWL = 5,6tCK(AVG)Reservedns4
CWL = 7tCK(AVG)Reservedns1,2,3
Supported CL Settings5,6,7,8,9nCK
Supported CWL Settings5,6,7nCK
13.5
(13.125)
13.5
(13.125)
13.5
(13.125)
49.5
(49.125)
9
9
9
9
20ns
-ns
-ns
-ns
- 24 -
Page 25
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
[ Table 17 ] DDR3-1600 Speed Bins
SpeedDDR3-1600
UnitsNOTECL-nRCD-nRP11-11-11
ParameterSymbolminmax
Internal read command to first datatAA
ACT to internal read or write delay timetRCD
PRE command periodtRP
ACT to ACT or REF command periodtRC
ACT to PRE command periodtRAS359*tREFIns
CL = 5
CWL = 5tCK(AVG)3.03.3ns1,2,3,4,7,10,11
CWL = 6,7,8tCK(AVG)Reservedns4
CWL = 5tCK(AVG)2.53.3ns1,2,3,7
CL = 6
CWL = 6tCK(AVG)Reservedns1,2,3,4,7
CWL = 7, 8tCK(AVG)Reservedns4
CWL = 5tCK(AVG)Reservedns4
CL = 7
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,4,7
CWL = 7tCK(AVG)Reservedns1,2,3,4,7
CWL = 8tCK(AVG)Reservedns4
CWL = 5tCK(AVG)Reservedns4
CL = 8
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,7
CWL = 7tCK(AVG)Reservedns1,2,3,4,7
CWL = 8tCK(AVG)Reservedns1,2,3,4
CWL = 5,6tCK(AVG)Reservedns4
CL = 9
CWL = 7tCK(AVG)1.5<1.875ns1,2,3,4,7
CWL = 8tCK(AVG)Reservedns1,2,3,4
CWL = 5,6tCK(AVG)Reservedns4
CL = 10
CWL = 7tCK(AVG)1.5<1.875ns1,2,3,7
CWL = 8tCK(AVG)Reservedns1,2,3,4
CL = 11
CWL = 5,6,7tCK(AVG)Reservedns4
CWL = 8tCK(AVG)1.25<1.5ns1,2,3,9
Supported CL Settings5,6,7,8,9,10,11nCK
Supported CWL Settings5,6,7,8nCK
13.75
(13.125)
13.75
(13.125)
13.75
(13.125)
48.75
(48.125)
9
9
9
9
20ns
-ns
-ns
-ns
- 25 -
Page 26
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
[ Table 18 ] DDR3-1866 Speed Bins
SpeedDDR3-1866
UnitsNOTECL-nRCD-nRP13-13-13
ParameterSymbolminmax
Internal read command to first datatAA
ACT to internal read or write delay timetRCD
PRE command periodtRP
ACT to ACT or REF command periodtRC
ACT to PRE command periodtRAS349*tREFIns
CL = 5
CWL = 5tCK(AVG)3.03.3ns
CWL = 6,7,8,9tCK(AVG)Reservedns4
CWL = 5tCK(AVG)2.53.3ns1,2,3,8
CL = 6
CWL = 6tCK(AVG)Reservedns1,2,3,4,8
CWL = 7,8,9tCK(AVG)Reservedns4
CWL = 5tCK(AVG)Reservedns4
CL = 7
CWL = 6tCK(AVG)1.8752.5ns1,2,3,4,8
CWL = 7,8,9tCK(AVG)Reservedns4
CWL = 5tCK(AVG)Reservedns4
CL = 8
CWL = 6tCK(AVG)1.875<2.5ns1,2,3,8
CWL = 7tCK(AVG)Reservedns1,2,3,4,8
CWL = 8,9tCK(AVG)Reservedns4
CWL = 5,6tCK(AVG)Reservedns4
CL = 9
CWL = 7tCK(AVG)1.51.875ns1,2,3,4,8
CWL = 8tCK(AVG)Reservedns4
CWL = 9tCK(AVG)Reservedns4
CWL = 5,6tCK(AVG)Reservedns4
CL = 10
CWL = 7tCK(AVG)1.5<1.875ns1,2,3,8
CWL = 8tCK(AVG)Reservedns1,2,3,4,8
CWL = 5,6,7tCK(AVG)Reservedns4
CL = 11
CWL = 8tCK(AVG)1.251.5ns1,2,3,4,8
CWL = 9tCK(AVG)Reservedns1,2,3,4
CL = 12
CL = 13
CWL = 5,6,7,8tCK(AVG)Reservedns4
CWL = 9tCK(AVG)Reservedns1,2,3,4
CWL = 5,6,7,8tCK(AVG)Reservedns4
CWL = 9tCK(AVG)1.07<1.25ns1,2,3,9
Supported CL Settings5,6,7,8,9,10,11,13nCK
Supported CWL Settings5,6,7,8,9nCK
13.91
(13.125)
13.91
(13.125)
13.91
(13.125)
47.91
(47.125)
12
12
12
12
20ns
-ns
-ns
-ns
1,2,3,4,8,10,
11
- 26 -
Page 27
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
15.3.1 Speed Bin Table Notes
Absolute Specification (T
NOTE :
1. The CL setting and CWL setting result in tCK(AVG).MIN and tCK(AVG).MAX requirements. When making a selection of tCK(AVG), both need to be fulfilled: Requirements
from CL setting as well as requirements from CWL setting.
2. tCK(AVG).MIN limits: Since CAS Latency is not purely analog - data and strobe output are synchronized by the DLL - all possible intermediate frequencies may not be guar-
anteed. An application should use the next smaller JEDEC standard tCK(AVG) value (2.5, 1.875, 1.5, or 1.25 ns) when calculating CL [nCK] = tAA [ns] / tCK(AVG) [ns],
rounding up to the next "SupportedCL".
3. tCK(AVG).MAX limits: Calculate tCK(AVG) = tAA.MAX / CL SELECTED and round the resulting tCK(AVG) down to the next valid speed bin (i.e. 3.3ns or 2.5ns or 1.875 ns or
1.25 ns). This result is tCK(AVG).MAX corresponding to CL SELECTED.
4. "Reserved" settings are not allowed. User must program a different value.
5. Any DDR3-1066 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
6. Any DDR3-1333 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
7. Any DDR3-1600 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
8. Any DDR3-1866 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
9. For devices supporting optional downshift to CL=7 and CL=9, tAA/tRCD/tRP min must be 13.125 ns or lower. SPD settings must be programmed to match. For example,
DDR3-1333(CL9) devices supporting downshift to DDR3-1066(CL7) should program 13.125 ns in SPD bytes for tAAmin (Byte 16), tRCDmin (Byte 18), and tRPmin (Byte
20). DDR3-1600(CL11) devices supporting downshift to DDR3-1333(CL9) or DDR3-1066(CL7) should program 13.125 ns in SPD bytes for tAAmin (Byte16), tRCDmin (Byte
18), and tRPmin (Byte 20). DDR3-1866(CL13) devices supporting downshift to DDR3-1600(CL11) or DDR3-1333(CL9) or DDR3-1066(CL7) should program 13.125 ns in
SPD bytes for tAAmin (Byte16), tRCDmin (Byte 18), and tRPmin (Byte 20). DDR3-1600 devices supporting down binning to DDR3-1333 or DDR3-1066 should program
13.125ns in SPD byte for tAAmin (Byte 16), tRCDmin (Byte 18) and tRPmin (Byte 20). Once tRP (Byte 20) is programmed to 13.125ns, tRCmin (Byte 21,23) also should be
programmed accodingly. For example, 49.125ns, (tRASmin + tRPmin = 36ns + 13.125ns) for DDR3-1333 and 48.125ns (tRASmin + tRPmin = 35ns + 13.125ns) for DDR3-
1600.
10. DDR3 800 AC timing apply if DRAM operates at lower than 800 MT/s data rate.
11. For CL5 support DIMM SPD include CL5 on supportable CAS Latency(Byte 14-bit1 set HIGH).
12. For devices supporting optional down binning to CL=11, CL=9 and CL=7, tAA/tRCD/tRPmin must be 13.125ns. SPD setting must be programed to match. For example,
DDR3-1866 devices supporting down binning to DDR3-1600 or DDR3-1333 or 1066 should program 13.125ns in SPD bytes for tAAmin(byte16), tRCDmin(Byte18) and
tRPmin (byte20). Once tRP (Byte20) is programmed to 13.125ns, tRCmin (Byte21,23) also should be programmed accordingly. For example, 47.125ns (tRASmin + tRPmin = 34ns + 13.125ns)
OPER
; V
= VDD = 1.5V +/- 0.075 V);
DDQ
- 27 -
Page 28
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
16. Timing Parameters by Speed Grade
[ Table 19 ] Timing Parameters by Speed Bins for DDR3-800 to DDR3-1333 (Cont.)
SpeedDDR3-800DDR3-1066DDR3-1333
ParameterSymbolMINMAXMINMAXMINMAX
Clock Timing
Minimum Clock Cycle Time (DLL off mode)tCK(DLL_OFF)8-8-8-ns6
Average Clock PeriodtCK(avg)
Clock PeriodtCK(abs)
Average high pulse widthtCH(avg)0. 470.530.470.530.470.53tCK(avg)
Average low pulse widthtCL(avg)0.470.530.470.530.470.53tCK(avg)
Clock Period JittertJIT(per)-100100-9090-8080ps
Clock Period Jitter during DLL locking periodtJIT(per, lck)-9090-8080-7070ps
Cycle to Cycle Period JittertJIT(cc)200180160ps
Cycle to Cycle Period Jitter during DLL locking periodtJIT(cc, lck)180160140ps
Cumulative error across 2 cyclestERR(2per)- 147147- 132132- 118118ps
Cumulative error across 3 cyclestERR(3per)- 175175- 157157- 140140ps
Cumulative error across 4 cyclestERR(4per)- 194194- 175175- 155155ps
Cumulative error across 5 cyclestERR(5per)- 209209- 188188- 168168ps
Cumulative error across 6 cyclestERR(6per)- 222222- 200200- 177177ps
Cumulative error across 7 cyclestERR(7per)- 232232- 209209- 186186ps
Cumulative error across 8 cyclestERR(8per)- 241241- 217217- 193193ps
Cumulative error across 9 cyclestERR(9per)- 249249- 224224- 200200ps
Cumulative error across 10 cyclestERR(10per)- 257257- 231231- 205205ps
Cumulative error across 11 cyclestERR(11per)- 263263- 237237- 210210ps
Cumulative error across 12 cyclestERR(12per)- 269269- 242242- 215215ps
Cumulative error across n = 13, 14 ... 49, 50 cyclestERR(nper)
Absolute clock HIGH pulse widthtCH(abs)0.43-0.43-0.43-tCK(avg)25
ACTIVE to PRECHARGE command periodtRASSee “Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin” on page 42nse
ACTIVE to ACTIVE command period for 1KB page sizetRRD
ACTIVE to ACTIVE command period for 2KB page sizetRRD
Four activate window for 1KB page sizetFA W30-27-nse
Four activate window for 2KB page sizetFA W40-35-nse
Command and Address setup time to CK, CK referenced to
VIH(AC) / VIL(AC) levels
Command and Address hold time from CK, CK referenced to
VIH(AC) / VIL(AC) levels
Control & Address Input pulse width for each inputtIPW560-535
Calibration Timing
Power-up and RESET calibration timetZQinitI512-max(512nCK,640ns)-nCK
Normal operation Full calibration timetZQoper256-max(256nCK,320ns)-nCK
Normal operation short calibration timetZQCS64-max(64nCK,80ns)-nCK23
Reset Timing
Exit Reset from CKE HIGH to a valid commandtXPR
Self Refresh Timing
Exit Self Refresh to commands not requiring a locked DLLtXS
Exit Self Refresh to commands requiring a locked DLLtXSDLLtDLLK(min)-tDLLK(min)-nCK
Minimum CKE low width for Self refresh entry to exit timingtCKESRtCKE(min) + 1tCK-tCKE(min) + 1nCK-
Valid Clock Requirement after Self Refresh Entry (SRE) or PowerDown Entry (PDE)
Valid Clock Requirement before Self Refresh Exit (SRX) or PowerDown Exit (PDX) or Reset Exit
tWTR
tIS(base)
AC175
tIS(base)
AC150
tIS(base)
AC135
tIS(base)
AC125
tIH(base)
DC100
tCKSRE
tCKSRX
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(12nCK,15ns)
max
(4nCK,6ns)
max
(4nCK,7.5ns)
45---psb,16
170--
--65
--150
120-100
max(5nCK, tRFC +
10ns)
max(5nCK,tRFC +
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
-
-
-
-
-
-
-
-
-
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(12nCK,15ns)
WR + roundup (tRP /
tCK(AVG))
max
(4nCK, 5ns)
max
(4nCK, 6ns)
max(5nCK, tRFC +
10ns)
max(5nCK,tRFC +
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
-e
-e,18
-
-e
-e
-
-
-
-
-
-
-
-
-
UnitsNOTE
nCK
psb,16
psb,16
psb,16,27
psb,16
ps28
- 32 -
Page 33
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
[ Table 20 ] Timing Parameters by Speed Bins for DDR3-1600, DDR3-1866
SpeedDDR3-1600DDR3-1866
ParameterSymbolMINMAXMINMAX
Power Down Timing
Exit Power Down with DLL on to any valid command;Exit Precharge Power Down with DLL
frozen to commands not requiring a locked DLL
Exit Precharge Power Down with DLL frozen to commands requiring a locked DLL
CKE minimum pulse widthtCKE
Command pass disable delaytC PDED1-2-nCK
Power Down Entry to Exit TimingtPDtCKE(min)9*tREFItCKE(min)9*tREFItCK15
Timing of ACT command to Power Down entrytACTPDEN1-1-nCK20
Timing of PRE command to Power Down entrytPRPDEN1-1-nCK20
Timing of RD/RDA command to Power Down entrytRDPDENRL + 4 +1-RL + 4 +1-
Timing of WR command to Power Down entry
(BL8OTF, BL8MRS, BC4OTF)
Timing of WRA command to Power Down entry
(BL8OTF, BL8MRS, BC4OTF)
Timing of WR command to Power Down entry
(BC4MRS)
Timing of WRA command to Power Down entry
(BC4MRS)
Timing of REF command to Power Down entrytREFPDEN1-1-20,21
Timing of MRS command to Power Down entrytMRSPDENtMOD(min)-tMOD(min)-
ODT Timing
ODT high time without write command or with write command
and BC4
ODT high time with Write command and BL8ODTH86-6-nCK
Asynchronous RTT turn-on delay (Power-Down with DLL frozen)
Asynchronous RTT turn-off delay (Power-Down with DLL frozen)
RTT turn-ontAON-225225-195195ps7,f
RTT_NOM and RTT_WR turn-off time from ODTLoff referencetAOF0.30.70.30.7tCK(avg)8,f
RTT dynamic change skewtADC0.30.70.30.7tCK(avg)f
Write Leveling Timing
First DQS pulse rising edge after tDQSS margining mode is programmed
DQS/DQS delay after tDQS margining mode is programmedtWLDQSEN25-25-tCK3
Write leveling setup time from rising CK, CK crossing to rising
DQS, DQS
Write leveling hold time from rising DQS, DQS crossing to rising
CK, CK
Write leveling output delaytWLO07.507.5ns
Write leveling output errortWLOE0202ns
crossing
crossing
tXP
tXPDLL
tWRPDEN
tWRAPDENWL + 4 +WR +1-WL + 4 +WR +1-nCK10
tWRPDEN
tWRAPDENWL +2 +WR +1-WL +2 +WR +1-nCK10
ODTH44-4-nCK
tAONPD28.528.5ns
tAOFPD28.528.5ns
tWLMRD40-40-tCK3
tWLS165-140-ps
tWLH165-140-ps
max
(3nCK,6ns)
max
(10nCK,
24ns)
max
(3nCK,5ns)
WL + 4 +(tWR/
tCK(avg))
WL + 2 +(tWR/
tCK(avg))
-max(3nCK,6ns)-
-max(10nCK,24ns)-2
-max(3nCK,5ns)-
-
-
WL + 4 +(tWR/
tCK(avg))
WL + 2 +(tWR/
tCK(avg))
-nCK9
-nCK9
UnitsNOTE
- 33 -
Page 34
Rev. 1.4
Unbuffered SODIMMdatasheetDDR3 SDRAM
16.1 Jitter Notes
Specific Note aUnit ’tCK(avg)’ represents the actual tCK(avg) of the input clock under operation. Unit ’nCK’ represents one clock cycle of the
input clock, counting the actual clock edges.ex) tMRD = 4 [nCK] means; if one Mode Register Set command is registered at Tm,
another Mode Register Set command may be registered at Tm+4, even if (Tm+4 - Tm) is 4 x tCK(avg) + tERR(4per),min.
Specific Note bThese parameters are measured from a command/address signal (CKE, CS
edge to its respective clock signal (CK/CK
tJIT(per), tJIT(cc), etc.), as the setup and hold are relative to the clock signal crossing that latches the command/address. That is,
these parameters should be met whether clock jitter is present or not.
Specific Note cThese parameters are measured from a data strobe signal (DQS, DQS
The spec values are not affected by the amount of clock jitter applied (i.e. tJIT(per), tJIT(cc), etc.), as these are relative to the
clock signal crossing. That is, these parameters should be met whether clock jitter is present or not.
Specific Note dThese parameters are measured from a data signal (DM, DQ0, DQ1, etc.) transition edge to its respective data strobe signal
(DQS, DQS
Specific Note eFor these parameters, the DDR3 SDRAM device supports tnPARAM [nCK] = RU{ tPARAM [ns] / tCK(avg) [ns] }, which is in clock
cycles, assuming all input clock jitter specifications are satisfied. For example, the device will support tnRP = RU{tRP / tCK(avg)},
which is in clock cycles, if all input clock jitter specifications are met. This means: For DDR3-800 6-6-6, of which tRP = 15ns, the
device will support tnRP = RU{tRP / tCK(avg)} = 6, as long as the input clock jitter specifications are met, i.e. Precharge command at Tm and Active command at Tm+6 is valid even if (Tm+6 - Tm) is less than 15ns due to input clock jitter.
Specific Note fWhen the device is operated with input clock jitter, this parameter needs to be derated by the actual tERR(mper),act of the input
clock, where 2 <= m <= 12. (output deratings are relative to the SDRAM input clock.)
For example, if the measured jitter into a DDR3-800 SDRAM has tERR(mper),act,min = - 172 ps and tERR(mper),act,max = +
193 ps, then tDQSCK,min(derated) = tDQSCK,min - tERR(mper),act,max = - 400 ps - 193 ps = - 593 ps and tDQSCK,max(derated) = tDQSCK,max - tERR(mper),act,min = 400 ps + 172 ps = + 572 ps. Similarly, tLZ(DQ) for DDR3-800 derates to
tLZ(DQ),min(derated) = - 800 ps - 193 ps = - 993 ps and tLZ(DQ),max(derated) = 400 ps + 172 ps = + 572 ps. (Caution on the
min/max usage!)
Note that tERR(mper),act,min is the minimum measured value of tERR(nper) where 2 <= n <=
12, and tERR(mper),act,max is the maximum measured value of tERR(nper) where 2 <= n <= 12.
) crossing.
) crossing. The spec values are not affected by the amount of clock jitter applied (i.e.
) crossing to its respective clock signal (CK, CK) crossing.
Specific Note gWhen the device is operated with input clock jitter, this parameter needs to be derated by the actual tJIT(per),act of the input
clock. (output deratings are relative to the SDRAM input clock.) For example, if the measured jitter into a DDR3-800 SDRAM has
tCK(avg),act = 2500 ps, tJIT(per),act,min = - 72 ps and tJIT(per),act,max = + 93 ps, then tRPRE,min(derated) = tRPRE,min +
tJIT(per),act,min = 0.9 x tCK(avg),act + tJIT(per),act,min = 0.9 x 2500 ps - 72 ps = + 2178 ps. Similarly, tQH,min(derated) =
tQH,min + tJIT(per),act,min = 0.38 x tCK(avg),act + tJIT(per),act,min = 0.38 x 2500 ps - 72 ps = + 878 ps. (Caution on the min/
max usage!)
- 34 -
Page 35
Rev. 1.4
ZQCorrection
(TSens x Tdriftrate) + (VSens x Vdriftrate)
0.5
(1.5 x 1) + (0.15 x 15)
= 0.133
~
~
128ms
Unbuffered SODIMMdatasheetDDR3 SDRAM
16.2 Timing Parameter Notes
1. Actual value dependant upon measurement level definitions which are TBD.
2. Commands requiring a locked DLL are: READ (and RAP) and synchronous ODT commands.
3. The max values are system dependent.
4. WR as programmed in mode register
5. Value must be rounded-up to next higher integer value
6. There is no maximum cycle time limit besides the need to satisfy the refresh interval, tREFI.
7. For definition of RTT turn-on time tAON see "Device Operation & Timing Diagram Datasheet"
8. For definition of RTT turn-off time tAOF see "Device Operation & Timing Diagram Datasheet".
9. tWR is defined in ns, for calculation of tWRPDEN it is necessary to round up tWR / tCK to the next integer.
10. WR in clock cycles as programmed in MR0
11. The maximum read postamble is bound by tDQSCK(min) plus tQSH(min) on the left side and tHZ(DQS)max on the right side. See "Device Operation & Timing
Diagram Datasheet.
12. Output timing deratings are relative to the SDRAM input clock. When the device is operated with input clock jitter, this parameter needs to be derated
by TBD
13. Value is only valid for RON34
14. Single ended signal parameter. Refer to chapter 8 and chapter 9 for definition and measurement method.
15. tREFI depends on T
16. tIS(base) and tIH(base) values are for 1V/ns CMD/ADD single-ended slew rate and 2V/ns CK, CK differential slew rate, Note for DQ and DM signals,
V
(DC) = V
REF
See "Address/Command Setup, Hold and Derating" on component datasheet.
17. tDS(base) and tDH(base) values are for 1V/ns DQ single-ended slew rate and 2V/ns DQS, DQS differential slew rate. Note for DQ and DM signals,
V
(DC)= V
REF
See "Data Setup, Hold and Slew Rate Derating" on component datasheet.
18. Start of internal write transaction is defined as follows ;
For BL8 (fixed by MRS and on-the-fly) : Rising clock edge 4 clock cycles after WL.
For BC4 (on-the-fly) : Rising clock edge 4 clock cycles after WL
For BC4 (fixed by MRS) : Rising clock edge 2 clock cycles after WL
19. The maximum read preamble is bound by tLZDQS(min) on the left side and tDQSCK(max) on the right side. See "Device Operation & Timing Diagram
Datasheet"
20. CKE is allowed to be registered low while operations such as row activation, precharge, autoprecharge or refresh are in progress, but power-down
IDD spec will not be applied until finishing those operations.
21. Although CKE is allowed to be registered LOW after a REFRESH command once tREFPDEN(min) is satisfied, there are cases where additional time
such as tXPDLL(min) is also required. See "Device Operation & Timing Diagram Datasheet".
22. Defined between end of MPR read burst and MRS which reloads MPR or disables MPR function.
23. One ZQCS command can effectively correct a minimum of 0.5 % (ZQCorrection) of RON and RTT impedance error within 64 nCK for all speed bins assuming
the maximum sensitivities specified in the ’Output Driver Voltage and Temperature Sensitivity’ and ’ODT Voltage and Temperature Sensitivity’ tables. The
appropriate interval between ZQCS commands can be determined from these tables and other application specific parameters.
One method for calculating the interval between ZQCS commands, given the temperature (Tdriftrate) and voltage (Vdriftrate) drift rates that the SDRAM is sub-
ject to in the application, is illustrated. The interval could be defined by the following formula:
OPER
DQ(DC). For input only pins except RESET, V
REF
DQ(DC). For input only pins except RESET, V
REF
REF
REF
(DC)=V
(DC)=V
REF
REF
CA(DC).
CA(DC).
where TSens = max(dRTTdT, dRONdTM) and VSens = max(dRTTdV, dRONdVM) define the SDRAM temperature and voltage sensitivities.
For example, if TSens = 1.5% /°C, VSens = 0.15% / mV, Tdriftrate = 1°C / sec and Vdriftrate = 15 mV / sec, then the interval between ZQCS commands is calculated as:
24. n = from 13 cycles to 50 cycles. This row defines 38 parameters.
25. tCH(abs) is the absolute instantaneous clock high pulse width, as measured from one rising edge to the following falling edge.
26. tCL(abs) is the absolute instantaneous clock low pulse width, as measured from one falling edge to the following rising edge.
27. The tIS(base) AC150 specifications are adjusted from the tIS(base) AC175 specification by adding an additional 125 ps for DDR3-800/1066 or 100ps for DDR3-
1333/1600 of derating to accommodate for the lower alternate threshold of 150mV and another 25ps to account for the earlier reference point [(175mv - 150
mV) / 1 V/ns].
28. Pulse width of a input signal is defined as the width between the first crossing of V
(DC) and the consecutive crossing of V
REF
REF
(DC)
29. tDQSL describes the instantaneous differential input low pulse width on DQS-DQS, as measured from one falling edge to the next consecutive rising edge.
30. tDQSH describes the instantaneous differential input high pulse width on DQS-DQS, as measured from one rising edge to the next consecutive falling edge.
31. tDQSH, act + tDQSL, act = 1 tCK, act ; with tXYZ, act being the actual measured value of the respective timing parameter in the application.
32. tDSH, act + tDSS, act = 1 tCK, act ; with tXYZ, act being the actual measured value of the respective timing parameter in the application.
33. The tIS(base) AC125 specifications are adjusted from the tIS(base) AC135 specification by adding an additional 75ps for DDR3-1866 and 65ps for DDR3-2133
to accommodate for the lower alternate threshold of 125mV and another 10ps to account for the earlier reference point [(135mv - 125mV) / 1 V/ns].
- 35 -
Page 36
Rev. 1.4
The used device is 256M x8 DDR3 SDRAM, FBGA.
DDR3 SDRAM Part NO : K4B2G0846D - HC**
* NOTE : Tolerances on all dimensions ±0.15 unless otherwise specified.
0.25 MAX
2.55
Detail BDetail A
1.00 ± 0.10
0.45 ± 0.03
4.00 ± 0.10
0.10ABM C
2X 4.00 ± 0.10
0.10ABM C
2X 1.80
(OPTIONAL HOLES)
0.60
Units : Millimeters
21.00
24.80
63.60
39.00
AB
Max 3.8
1.00 ± 0.10
SPD
1.65
6
30.00 ± 0.15
20.00
67.60
0.10ABM C
Unbuffered SODIMMdatasheetDDR3 SDRAM
17. Physical Dimensions :
17.1 256Mbx8 based 256Mx64 Module (1 Rank) - M471B5773DH0
- 36 -
Page 37
Rev. 1.4
The used device is 256M x8 DDR3 SDRAM, FBGA.
DDR3 SDRAM Part NO : K4B2G0846D - HC**
* NOTE : Tolerances on all dimensions ±0.15 unless otherwise specified.
0.25 MAX
2.55
Detail BDetail A
1.00 ± 0.10
0.45 ± 0.03
4.00 ± 0.10
0.10ABM C
2X 4.00 ± 0.10
0.10ABM C
2X 1.80
(OPTIONAL HOLES)
0.60
Units : Millimeters
21.00
24.80
63.60
39.00
A
B
Max 3.8
1.00 ± 0.10
SPD
1.65
6
30.00 ± 0.15
20.00
67.60
0.10ABM C
Unbuffered SODIMMdatasheetDDR3 SDRAM
17.2 256Mbx8 based 512Mx64 Module (2 Ranks) - M471B5273DH0
- 37 -
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