SK hynix Registered DDR4 SDRAM DIMMs (Registered Double Data Rate Synchronous DRAM Dual In-Line
Memory Modules) are low power, high-speed operation memory modules that use DDR4 SDRAM devices.
These Registered SDRAM DIMMs are intended for use as main memory when installed in systems such as
servers and workstations.
Features
• Power Supply: VDD=1.2V (1.14V to 1.26V)
• VDDQ = 1.2V (1.14V to 1.26V)
• VPP - 2.5V (2.375V to 2.75V)
• VDDSPD=2.25V to 2.75V
• Functionality and operations comply with the DDR4 SDRAM datasheet
• 16 internal banks
• Bank Grouping is applied, and CAS to CAS latency (tCCD_L, tCCD_S) for the banks in the same or different bank group accesses are available
• Data transfer rates: PC4-2666, PC4-2400, PC4-2133
• Bi-Directional Differential Data Strobe
• 8 bit pre-fetch
• Burst Length (BL) switch on-the-fly BL8 or BC4(Burst Chop)
• Supports ECC error correction and detection
• On-Die Termination (ODT)
• Temperature sensor with integrated SPD
• This product is in compliance with the RoHS directive.
• Per DRAM Addressability is supported
• Internal Vref DQ level generation is available
• Write CRC is supported at all speed grades
• DBI (Data Bus Inversion) is supported(x8)
• CA parity (Command/Address Parity) mode is supported
Ordering Information
Part NumberDensityOrganizationComponent Composition
Register column address strobe inputVDDSDRAM core power supply
Register write enable inputC0, C1, C2Chip ID lines for SDRAMx
DIMM Rank Select Lines input12V
CKE0, CEK1Register clock enable lines inputVREFCA
ODT0, ODT1
Register on-die termination control
lines input
VSSPower supply return (ground)
I2C serial bus clock for SPD-TSE and
register
I2C serial data line for SPD-TSE and
register
I2C slave address select for SPD-TSE
and register
Optional Power Supply on socket but
not used on RDIMM
SDRAM command/address reference
supply
ACT_nRegister input for activate inputVDDSPDSerial SPD/TS positive power supply
DQ0-DQ63DIMM memory data busALERT_nRegister ALERT_n output
CB0-CB7DIMM ECC check bitsVPPSDRAM Supply
TDQS9_t-TDQS17_t
TDQS9_c-TDQS17_c
DQS0_t-DQS17_t
DQS0_c-DQS17_c
DBI0_n-DBI8_nData Bus InversionEVENT_n
CK0_t, CK1_t
CK0_c, CK1_c
Dummy loads for mixed populations of
x4 based and x8 based RDIMMs.
Data Buffer data strobes
(positive line of differential pair)
Data Buffer data strobes
(negative line of differential pair)
Register clock input (positive line of differential pair)
Register clocks input (negative line of
differential pair)
DM0_n-DM8_nData Mask
RESET_n
Set Register and SDRAMs to a Known
State
SPD signals a thermal event has
occurred
VTTSDRAM I/O termination supply
RFUReserved for future use
1. Address A17 is only valid for 16Gbx4 based SDRAMs.
2. RAS_n is a multiplexed function with A16.
3. CAS_n is a multiplexed function with A15.
4. WE_n is a multiplexed function with A14.
Rev. 1.7 / Jun.20165
Page 6
Input/Output Functional Descriptions
SymbolTypeFunction
CK0_t, CK0_c,
CK1_t, CK1_c
CKE0, CKE1Input
CS0_n, CS1_n,
CS2_n, CS3_n
C0, C1, C2
ODT0, ODT1
ACT_n
RAS_n/A16,
CAS_n/A15,
WE_n/A14
Input
Input
Input
Input
Input
Input
Clock: CK_t and CK_c are differential clock inputs. All address and control input signals
are sampled on the crossing of the positive edge of CK_t and negative edge of CK_c.
Clock Enable: CKE HIGH activates, and CKE LOW deactivates internal clock signals and
device input buffers and output drivers. Taking CKE LOW provides Precharge PowerDown and Self-Refresh operation (all banks idle), or Active Power-Down (row Active in
any bank). CKE is synchronous for Self-Refresh exit. After VREFCA and Internal DQ Vref
have become stable during the power on and initialization sequence, they must be
maintained during all operations (including Self-Refresh). CKE must be maintained high
throughout read and write accesses. Input buffers, excluding CK_t, CK_c, ODT and CKE,
are disabled during power-down. Input buffers, excluding CKE, are disabled during SelfRefresh.
Chip Select: All commands are masked when CS_n is registered HIGH. CS_n provides for
external Rank selection. CS_n is considered part of the command code.
Chip ID: Chip ID is only used for 3DS for 2,4,8 high stack via TSV to select each slice of
stacked component. Chip ID is considered part of the command code.
On-Die Termination: ODT (registered HIGH) enables RTT_NOM termination resistance
internal to the DDR4 SDRAM. When enabled, ODT is only applied to each DQ, DQS_t,
DQS_c, TDQS_t, and TDQS_c signal. The ODT pin will be ignored if MR1 is programmed
to disable RTT_NOM.
Activation Command Input: ACT_n defines the Activation command being entered along
with CS_n. The input into RAS_n/A16, CAS_n/A15, and WE_n/A14 will be considered as
Row Address A16, A15, and A14.
Command Inputs: RAS_n/A16, CAS_n/A15, and WE_n/A14 (along with CS_n) define the
command being entered. Those pins are multi-function. For example, for activation with
ACT_n Low, these are Addresses like A16, A15, and A14, but for non-activation
command with ACT_n High, these are Command pins for Read, Write, and other
commands defined in command truth table.
Bank Group Inputs: BG0 - BG1 define to which bank group an Active, Read, Write, or
BG0 - BG1
BA0 - BA1
A0 - A17
Rev. 1.7 / Jun.20166
Input
Input
Input
Precharge command is being applied. BG0 also determines which mode register is to be
accessed during a MRS cycle.
Bank Address Inputs: BA0 - BA1 define to which bank an Active, Read, Write, or
Precharge command is being applied. Bank address also determines which mode
register is to be accessed during a MRS cycle.
Address Inputs: Provide the row address for ACTIVATE Commands and the column
address for Read/Write commands to select one location out of the memory array in the
respective bank. A10/AP, A12/BC_n, RAS_n/A16, CAS_n/A15 and WE_n/A14 have
additional functions. See other rows. The address inputs also provide the op-code during
Mode Register Set commands. A17 is only defined for 16Gb x4 SDRAM configurations.
Page 7
SymbolTypeFunction
Auto-precharge: A10 is sampled during Read/Write commands to determine whether
Autoprecharge should be performed to the accessed bank after the Read/Write
A10 / AP
Input
operation. (HIGH: Autoprecharge; LOW: no Autoprecharge). A10 is sampled during a
Precharge command to determine whether the Precharge applies to one bank (A10
LOW) or all banks (A10 HIGH). If only one bank is to be precharged, the bank is selected
by bank addresses.
Burst Chop: A12 / BC_n is sampled during Read and Write commands to determine if
A12 / BC_n
Input
burst chop (on-the-fly) will be performed. (HIGH, no burst chop; LOW: burst chopped).
See command truth table for details.
RESET_n
CMOS
Input
Active Low Asynchronous Reset: Reset is active when RESET_n is LOW, and inactive
when RESET_n is HIGH. RESET_n must be HIGH during normal operation.
Data Input/ Output: Bi-directional data bus. If CRC is enabled via Mode register, then
DQ
Input /
Output
CRC code is added at the end of Data Burst. Any DQ from DQ0-DQ3 may indicate the
internal Vref level during test via Mode Register Setting MR4 A4=High. Refer to vendor
specific data sheets to determine which DQ is used.
Data Strobe: output with read data, input with write data. Edge-aligned with read data,
DQS0_t-DQS17_t,
DQS0_c-DQS17_c
Input /
Output
centered in write data. The data strobe DQS_t is paired with differential signals DQS_c,
respectively, to provide differential pair signaling to the system during reads and writes.
DDR4 SDRAM supports differential data strobe only and does not support single-ended.
TDQS9_t-TDQS17_t,
TDQS9_c-TDQS17_c
DBI0_n-DBI8_n
DM0_n-DM8_n
PAR
ALERT_n
RFU
NC
1
VDD
VSS
Input
Input/
Output
Input
Input
Output
(Input)
Supply
Supply
Provides a dummy load for x8 based RDIMMs where mixed populations of x4 and x8
based RDIMMs are present.
Provides for data bus inversion. Only possible for x8 based RDIMMs and where only x8
based RDIMMs are on a channel.
Provides for masking of a byte on WRITE commands to the SDRAMs. Only Possible x8
based RDIMMs and where only x8 based RDIMMs are on a channel.
Command and Address Parity Input : DDR4 Supports Even Parity check in SDRAMs with
MR setting. Once it’s enabled via Register in MR5, then SDRAM calculates Parity with
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 VDDQ must be within 300 mV of each other at all times;and VREFCA must be not greater than 0.6 x
VDDQ, When VDD and VDDQ are less than 500 mV; VREFCA may be equal to or less than 300 mV
4. VPP must be equal or greater than VDD/VDDQ at all times
5. Overshoot area above 1.5V is specified in DDR4 Device Operation.
Voltage on VDD pin relative to Vss
Voltage on VDDQ pin relative to Vss
Voltage on VPP pin relative to Vss
Voltage on any pin except VREFCA relative to Vss
Storage Temperature
-0.3 ~ 1.5V 1,3
-0.3 ~ 1.5V 1,3
-0.3 ~ 3.0V4
-0.3 ~ 1.5V 1,3,5
-55 to +100°C 1,2
DRAM Component Operating Temperature Range
Temperature Range
SymbolParameter RatingUnitsNotes
o
T
OPER
Notes:
1. Operating Temperature TOPER is the case surface temperature on the center / top side of the DRAM. For measurement conditions, please refer to the JEDEC document 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
3. Some applications require operation of the DRAM in the Extended Temperature Range between 85
case temperature. Full specifications are guaranteed in this range, but the following additional conditions apply:
Normal Operating Temperature Range
Extended Temperature Range
a. Refresh commands must be doubled in frequency, therefore reducing the Refresh interval tREFI to 3.9 µs. It is
also possible to specify a component with 1X refresh (tREFI to 7.8µs) in the Extended Temperature Range.
Please refer to the DIMM SPD for option availability
0 to 85
85 to 95
o
C under all operating conditions.
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)
or enable the optional Auto Self-Refresh mode (MR2 A6 = 1b and MR2 A7 = 0b).
C 1,2
o
C1,3
o
C and 95oC
Rev. 1.7 / Jun.201623
Page 24
AC & DC Operating Conditions
Recommended DC Operating Conditions
Recommended DC Operating Conditions
SymbolParameter
VDDSupply Voltage1.141.21.26V1,2,3
VDDQSupply Voltage for Output1.141.21.26V1,2,3
VPPSupply Voltage for DRAM Activating2.3752.52.75V3
NOTE:
1. Under all conditions VDDQ must be less than or equal to VDD.
2. VDDQ tracks with VDD. AC parameters are measured with VDD and VDDQ tied together.
3. DC bandwidth is limited to 20MHz.
Min.Typ.Max.
Rating
UnitNOTE
Rev. 1.7 / Jun.201624
Page 25
AC & DC Input Measurement Levels
AC & DC Logic input levels for single-ended signals
Single-ended AC & DC input levels for Command and Address
DDR4-1600/1866/2133/
SymbolParameter
2400
Min.Max.Min.Max.
+
V
V
V
V
IH.CA
V
IL.CA
V
IH.CA
IL.CA
REFCA
(DC75)
(DC75)
(AC100)
(AC100)
(DC)
DC input logic high
DC input logic low VSS
AC input logic high
AC input logic low Note 2
Reference Voltage for
ADD, CMD inputs
REFCA
0.075
VDD TBDTBDV
V
-
REFCA
0.075
V
REF
+ 0.1
Note 2 TBDTBDV1
V
- 0.1
REF
0.49*VDD 0.51*VDD TBDTBDV2,3
NOTE :
1. See “Overshoot and Undershoot Specifications”
2. The AC peak noise on VREFCA may not allow VREFCA to deviate from VREFCA(DC) by more than ± 1% VDD (for
reference : approx. ± 12mV)
3. For reference : approx. VDD/2 ± 12mV
DDR4-2666/3200
UnitNOTE
TBDTBDV
TBDTBDV1
Rev. 1.7 / Jun.201625
Page 26
AC and DC Input Measurement Levels: V
voltage
V
DD
V
SS
time
Tolerances
REF
The DC-tolerance limits and ac-noise limits for the reference voltages V
It shows a valid reference voltage V
(DC) is the linear average of V
V
REF
meet the min/max requirement in Table X. Furthermore V
no more than ± 1% V
DD
.
(t) as a function of time. (V
REF
(t) over a very long period of time (e.g. 1 sec). This average has to
REF
REF
REF
(t) may temporarily deviate from V
is illustrated in Figure below.
REFCA
stands for V
REFCA
).
REF
(DC) by
Illustration of V
(DC) tolerance and V
REF
AC-noise limits
REF
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
REF
.
(DC), as defined in Figure above.
REF
affect the absolute voltage a signal has to reach to achieve a valid
REF
high or low level and therefore the time to which setup and hold is measured. System timing and voltage
budgets need to account for V
(DC) deviations from the optimum position within the data-eye of the
REF
input signals.
This also clarifies that the DRAM setup/hold specification and derating values need to include time and
voltage associated with V
ified limit (+/-1% of V
AC-noise. Timing and voltage effects due to AC-noise on V
REF
) are included in DRAM timings and their associated deratings.
DD
up to the spec-
REF
Rev. 1.7 / Jun.201626
Page 27
AC and DC Logic Input Levels for Differential Signals
0.0
tDVAC
V
IH
.DIFF.MIN
half cycle
Differential Input Voltage (CK-CK)
time
tDVAC
VIH.DIFF.AC.MIN
V
IL
.DIFF.MAX
V
IL
.DIFF.AC.MAX
(CK_t - CK_c)
Differential signal definition
NOTE:
1. Differential signal rising edge from VIL.DIFF.MAX to VIH.DIFF.MIN must be monotonic slope.
2. Differential signal falling edge from VIH.DIFF.MIN to VIL.DIFF.MAX must be monotonic slope.
Definition of differential ac-swing and “time above ac-level” t
DVAC
Rev. 1.7 / Jun.201627
Page 28
Differential swing requirements for clock (CK_t - CK_c)
Differential AC and DC Input Levels
SymbolParameter
V
V
V
IHdiff
V
ILdiff
IHdiff
ILdiff
differential input high+0.150NOTE 3 TBDNOTE 3 V1
differential input low NOTE 3 -0.150NOTE 3 TBDV1
(AC)
differential input high ac
(AC)
differential input low acNOTE 3
DDR4 -1600,1866,2133DDR4 -2400,2666 & 3200
minmaxminmax
2 x (V
V
IH
REF
(AC) -
)
NOTE 3
2 x (VIL(AC) -
V
)
REF
2 x (V
(AC) -
IH
V
REF
NOTE 3
)
NOTE 3V2
2 x (VIL(AC) -
V
REF
)
unit NOTE
V2
NOTE :
1. Used to define a differential signal slew-rate.
2. for CK_t - CK_c use V
IH.CA/VIL.CA
(AC) of ADD/CMD and V
REFCA
;
3. These values are not defined; however, the differential signals CK_t - CK_c, need to be within the respective limits
(V
(DC) max, V
IH.CA
(DC)min) for single-ended signals as well as the limitations for overshoot and undershoot.
IL.CA
Allowed time before ringback (tDVAC) for CK_t - CK_c
Slew Rate [V/ns]
tDVAC [ps] @ |V
minmaxminmax
> 4.0120-TBD-
4.0115-TBD-
3.0110-TBD-
2.0105-TBD-
1.8100-TBD-
1.695-TBD-
1.490-TBD-
1.285-TBD-
1.080-TBD-
< 1.080-TBD-
(AC)| = 200mV tDVAC [ps] @ |V
IH/Ldiff
(AC)| = TBDmV
IH/Ldiff
Rev. 1.7 / Jun.201628
Page 29
Single-ended requirements for differential signals
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
time
Each individual component of a differential signal (CK_t, CK_c) has also to comply with certain requirements for single-ended signals.
CK_t and CK_c have to approximately reach VSEHmin / VSELmax (approximately equal to the ac-levels
(VIH.CA(AC) / VIL.CA(AC) ) for ADD/CMD signals) in every half-cycle.
Note that the applicable ac-levels for ADD/CMD might be different per speed-bin etc. E.g., if Different
value than VIH.CA(AC100)/VIL.CA(AC100) is used for ADD/CMD signals, then these ac-levels apply also for
the single-ended signals CK_t and CK_c
Single-ended requirement for differential signals
Note that, while ADD/CMD signal requirements are with respect to VrefCA, the single-ended components
of differential signals have a requirement with respect to VDD / 2; this is nominally the same. The transition of single-ended signals through the ac-levels is used to measure setup time. For single-ended components of differential signals the requirement to reach VSELmax, VSEHmin has no bearing on timing, but
adds a restriction on the common mode characteristics of these signals.
Rev. 1.7 / Jun.201629
Page 30
Single-ended levels for CK_t, CK_c
SymbolParameter
V
SEH
V
SEL
Single-ended high-level for
CK_t , CK_c
Single-ended low-level for
CK_t , CK_c
DDR4-1600/1866/2133DDR4-2400/2666/3200
MinMaxMinMax
(VDD/2)
+0.100
NOTE3
NOTE3TBDNOTE3V1, 2
(VDD/2)-
0.100
NOTE3TBDV1, 2
Unit NOTE
NOTE :
1. For CK_t - CK_c use V
2. V
(AC)/VIL(AC) for ADD/CMD is based on V
IH
IH.CA/VIL.CA
(AC) of ADD/CMD;
;
REFCA
3. These values are not defined, however the single-ended signals CK_t - CK_c need to be within the respective limits
(V
(DC) max, V
IH.CA
(DC)min) for single-ended signals as well as the limitations for overshoot and undershoot.
IL.CA
Rev. 1.7 / Jun.201630
Page 31
Address and Control Overshoot and Undershoot specifications
Overshoot Area Between
V
DD
Undershoot Area below VSS
VDD Absolute Max
V
SS
Volts
(V)
1 tCK
VDD Absolute Max and VDD Max
Overshoot Area above VDD Absolute Max
AC overshoot/undershoot specification for Address, Command and Control pins
Specification
Parameter
Maximum peak amplitude above VDD Absolute Max
allowed for overshoot area
Delta value between VDD Absolute Max and VDD Max
allowed for overshoot area
Maximum peak amplitude allowed for undershoot area0.30.30.30.3TBDV-ns
Maximum overshoot area per 1tCK Above Absolute
Max
Maximum overshoot area per 1tCK Between Absolute
Max
Maximum undershoot area per 1tCK Below VSS0.26440.22650.19840.1762TBDV-ns
Address,Command and Control Overshoot and Undershoot Definition
Rev. 1.7 / Jun.201631
Page 32
Clock Overshoot and Undershoot Specifications
Overshoot Area Between
V
DD
Undershoot Area below VSS
VDD Absolute Max
V
SS
Volts
(V)
1 UI
VDD Absolute Max and VDD Max
Overshoot Area above VDD Absolute Max
AC overshoot/undershoot specification for Clock
Specification
Parameter
Maximum peak amplitude above VDD Absolute Max
allowed for overshoot area
Delta value between VDD Absolute Max and VDD Max
allowed for overshoot area
Maximum peak amplitude allowed for undershoot area0.30.30.30.3TBDV
Maximum overshoot area per 1UI Above Absolute Max0.00380.00320.00280.0025TBDV-ns
Maximum overshoot area per 1UI Between Absolute
Max
Maximum undershoot area per 1UI Below VSS0.11440.09800.08580.0762TBDV-ns
DDR4-
1600
0.060.060.060.06TBDV
0.240.240.240.24TBDV
0.11250.09640.08440.0750TBDV-ns
(CK_t, Ck_c)
DDR4-
1866
DDR4-
2133
DDR4-
2400
DDR4-
2666
Unit
Clock Overshoot and Undershoot Definition
Rev. 1.7 / Jun.201632
Page 33
Data, Strobe and Mask Overshoot and Undershoot Specifications
Overshoot Area Between
VDDQ
Undershoot Area below Min absolute level of Vin, Vout
Max absolute level of Vin,Vout
VSSQ
Volts
(V)
1 UI
Max absolute level of Vin,Vout and VDDQ
Overshoot Area above Max absolute level of Vin,Vout
Undershoot Area Between
Min absolute level of Vin,Vout and VSSQ
Min absolute level of Vin,Vout
AC overshoot/undershoot specification for Data, Strobe and Mask
Specification
Parameter
Maximum peak amplitude above Max absolute level of
Vin,Vout
Overshoot area Between Max Absolute level of Vin,
Vout and VDDQ Max
Undershoot area Between Min absolute level of
Vin,Vout and VDDQ
Maximum peak amplitude below Min absolute level of
Vin,Vout
Maximum overshoot area per 1UI Above Max absolute
level of Vin,Vout
Maximum overshoot area per 1UI Between Max absolute level of Vin,Vout and VDDQ Max
Maximum undershoot area per 1UI Between Min absolute level of Vin,Vout and VSSQ
Maximum undershoot area per 1UI Below Min absolute level of Vin,Vout
(DQ, DQS_t, DQS_c, DM_n, DBI_n, TDQS_t, TDQS_c)
DDR4-
1600
0.160.160.160.16TBDV
0.240.240.240.24TBDV
0.300.300.300.30TBDV
0.100.100.100.10TBDV
0.01500.01290.01130.0100TBDV-ns
0.10500.09000.07880.0700TBDV-ns
0.10500.09000.07880.0700TBDV-ns
0.01500.01290.01130.0100TBDV-ns
DDR4-
1866
DDR4-
2133
DDR4-
2400
DDR4-
2666
Unit
Rev. 1.7 / Jun.201633
Data, Strobe and Mask Overshoot and Undershoot Definition
Page 34
Slew Rate Definitions
Delta TRdiff
Delta TFdiff
V
IHdiffmin
0
V
ILdiffmax
Differential Input Voltage(i,e, CK_t - CK_c)
Slew Rate Definitions for Differential Input Signals (CK)
Input slew rate for differential signals (CK_t, CK_c) are defined and measured as shown in Table and Figure below.
Differential Input Slew Rate Definition
Description Defined by
Differential input slew rate for rising edge(CK_t - CK_c)
Differential input slew rate for falling edge(CK_t - CK_c)
NOTE: The differential signal (i,e.,CK_t - CK_c) must be linear between these thresholds.
fromto
V
ILdiffmax
V
IHdiffmin
V
V
IHdiffmin
ILdiffmax
V
[
IHdiffmin - VILdiffmax
V
[
IHdiffmin - VILdiffmax
] / DeltaTRdiff
] / DeltaTFdiff
Differential Input Slew Rate Definition for CK_t, CK_c
Rev. 1.7 / Jun.201634
Page 35
Slew Rate Definition for Single-ended Input Signals (CMD/ADD)
Delta TRsingle
Delta TFsingle
V
IHCA(AC) Min
V
IHCA(DC) Min
VREFCA(DC)
V
ILCA(DC) Max
V
ILCA(AC) Max
Single-ended Input Slew Rate definition for CMD and ADD
NOTE :
1. Single-ended input slew rate for rising edge = { VIHCA(AC)Min - VILCA(DC)Max } / Delta TR single
2. Single-ended input slew rate for falling edge = { VIHCA(DC)Min - VILCA(AC)Max } / Delta TF single
3. Single-ended signal rising edge from VILCA(DC)Max to VIHCA(DC)Min must be monotonic slope.
4. Single-ended signal falling edge from VIHCA(DC)Min to VILCA(DC)Max must be monotonic slope
Rev. 1.7 / Jun.201635
Page 36
Differential Input Cross Point Voltage
Vix
CK_t
VDD/2
VSS
VDD
CK_c
Vix
VSEL
VSEH
To guarantee tight setup and hold times as well as output skew parameters with respect to clock, each
cross point voltage of differential input signals (CK_t, CK_c) must meet the requirements in Table. The differential input cross point voltage VIX is measured from the actual cross point of true and complement signals to the midlevel between of VDD and VSS.
Vix Definition (CK)
Cross point voltage for differential input signals (CK)
SymbolParameter
-Area of VSEH, VSEL
Differential Input Cross Point
VlX(CK)
SymbolParameter
VlX(CK)
Rev. 1.7 / Jun.201636
Voltage relative to VDD/2 for
CK_t, CK_c
-Area of VSEH, VSELTBDTBDTBDTBD
Differential Input Cross Point
Voltage relative to VDD/2 for
CK_t, CK_c
VSEL =<
VDD/2 - 145mV
-120mV
TBDTBDTBDTBD
DDR4-1600/1866/2133
minmax
VDD/2 - 145mV
=< VSEL =<
VDD/2 - 100mV
- (VDD/2 - VSEL)
+ 25mV
DDR4-2400/2666/3200
minmax
VDD/2 + 100mV
=< VSEH =<
VDD/2 + 145mV
(VSEH - VDD/2)
- 25mV
VDD/2 + 145mV
=< VSEH
120mV
Page 37
CMOS rail to rail Input Levels
0.8*VDD
TR_RESET
tPW_RESET
0.7*VDD
0.3*VDD
0.2*VDD
CMOS rail to rail Input Levels for RESET_n
CMOS rail to rail Input Levels for RESET_n
ParameterSymbolMinMaxUnitNOTE
AC Input High Voltage VIH(AC)_RESET 0.8*VDDVDDV6
DC Input High Voltage VIH(DC)_RESET 0.7*VDDVDDV2
DC Input Low Voltage VIL(DC)_RESET VSS0.3*VDDV1
AC Input Low Voltage VIL(AC)_RESET VSS0.2*VDDV7
Rising time TR_RESET -1.0us4
RESET pulse width tPW_RESET 1.0-us3,5
NOTE :
1. After RESET_n is registered LOW, RESET_n level shall be maintained below VIL(DC)_RESET during tPW_RESET,
otherwise, SDRAM may not be reset.
2. Once RESET_n is registered HIGH, RESET_n level must be maintained above VIH(DC)_RESET, otherwise, SDRAM
operation will not be guaranteed until it is reset asserting RESET_n signal LOW.
3. RESET is destructive to data contents.
4. No slope reversal(ringback) requirement during its level transition from Low to High.
5. This definition is applied only “Reset Procedure at Power Stable”.
6. Overshoot might occur. It should be limited by the Absolute Maximum DC Ratings.
7. Undershoot might occur. It should be limited by Absolute Maximum DC Ratings
RESET_n Input Slew Rate Definition
Rev. 1.7 / Jun.201637
Page 38
AC and DC Logic Input Levels for DQS Signals
Differential signal definition
Definition of differential DQS Signal AC-swing Level
Differential swing requirements for DQS (DQS_t - DQS_c)
1. Used to define a differential signal slew-rate.
2. These values are not defined; however, the differential signals DQS_t - DQS_c, need to be within the respective
limits Overshoot, Undershoot Specification for single-ended signals.
Rev. 1.7 / Jun.201638
DDR4-1600,1866,2133DDR4-2400DDR4-2666,3200
MinMaxMinMaxMinMax
Unit Note
Page 39
Peak voltage calculation method
The peak voltage of Differential DQS signals are calculated in a following equation.
VIH.DIFF.Peak Voltage = Max(f(t))
VIL.DIFF.Peak Voltage = Min(f(t))
f(t) = VDQS_t - VDQS_c
The Max(f(t)) or Min(f(t)) used t o determine the midpoint which to reference the +/-35% window of the
exempt non-monotonic signaling shall be the samllest peak voltage observed in all ui’s.
Definition of differential DQS Peak Voltage and rage of exempt non-monotonic signaling
Rev. 1.7 / Jun.201639
Page 40
Differential Input Cross Point Voltage
To achieve tight RxMask input requirements as well as output skew parameters with respect to strobe, the
cross point voltage of differential input signals (DQS_t, DQS_c) must meet the requirements in Tabel
below. The differential input cross point voltage VIX_DQS (VIX_DQS_FR and VIX_DQS_RF) ins measured
from the actual cross point of DQS_t, DQS_c relative to the VDQSmid fo the DQS_t and DQS_c signals.
VDQSmid is the midpoint of the minimum levels achieved by the transitioning DQS_t and DQS_c signals,
and noted by VDQS_trans. VDQS_trans is the difference between the lowest horizontal tangent above
VDQSmid of the transitioning DQS signals and the highest horizontal tangent below VDQSmid of the transitioning DQS signals.
A non-monotonic transitioning signal’s ledge is exempt or not used in determination of a horizontal tangent
provieded the said ledge occurs within +/- 30% of the midpoint of either VID.DIFF.Peak Voltage (DQS_t
rising) of VIL.DIFF.Peak Voltage (DQS_c rising), refer to Furure Definition of differential DQS Peak Voltage
and rage of exempt non-monotonic signaling. A secondary horizontal tangent resulting from a ring-back
transition is also exempt in determination of a horizontal tangent. Thath is, a falling transition’s horizontal
tangent is derived from its negative slope to zero slope transition (point A in Fugure bloew) and a ringback’s horizontal tangent derived from its positive slope to zero slope transition (point B in Figure below) is
not a valid horizontal tangent; and a rising transition’s horizontal tangent is derived from its positive slope
to zero slope transition (point C in Figure below) and a ring-back’s horizontal tangent derived from its negative slope to zero slope transition (point D in Figure below) is not a valid horizontal tangent.
Vix Definition (DQS)
Rev. 1.7 / Jun.201640
Page 41
Cross point voltage for differential input signals
DDR4-
SymbolParameter
Vix_DOS_
ratio
NOTE :
1. Vix_DQS_Ratio is DQS VIX crossing (Vix_DQS_FR or Vix_DQS_RF) divided by VDQS_trans. VDQS_trans is the
difference between the lowest horizontal tangent above VDQSmid of the transitioning DQS signals and the highest
horizontal tangent below VDQSmid of the transitioning DQS signals.
2. VDQSmid will be similar to the VREFDQ internal setting value obtained during Vref Training if the DQS and DQs
drivers and paths are matched.
DQS_t and DQS_c crossing relative
to the midpoint of the DQS_t and
DQS_c signal swings
1600,1866,2133,2400
MinMaxMinMax
-25TBDTBD%1,2
DDR4-2666,2933,3200
Unit Note
Rev. 1.7 / Jun.201641
Page 42
Differential Input Slew Rate Definition
Input slew rate for differential signals (DQS_t, DQS_c) are defined and measured as shown in Figure
below.
NOTE :
1. Differential signal rising edge from VILDiff_DQS to VIHDiff_DQS must be monotonic slope.
2. Differential signal falling edge from VIHDiff_DQS to VILDiff_DQS must be monotonic slope.
Differential Input Slew Rate Definition for DQS_t, DQS_c
Differential Input Slew Rate Definition for DQS_t, DQS_c
DescriptionDefined by
Differential input slew rate for
rising edge(DQS_t - DQS_c)
Differential input slew rate for
falling edge(DQS_t - DQS_c)
Single ended output slew rate SRQse49494949TBDTBDTBDTBDV/ns
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 cases, a maximum slew rate of 12 V/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 or low to high) while all remaining DQ signals in the same byte lane are static (i.e. they stay at either high or
low).
-Case 2 is defined for a single DQ signal within a byte lane which is switching into a certain direction (either from high
to low or low to high) while all remaining 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 remaining DQ signal switching into the opposite direction,
the regular maximum limit of 9 V/ns applies
Rev. 1.7 / Jun.201645
Page 46
Differential Output Slew Rate
V
OHdiff
(AC)
V
OLdiff
(AC)
delta TRdiffdelta TFdiff
With the reference load for timing measurements, output slew rate for falling and rising edges is defined
and measured between VOLdiff(AC) and VOHdiff(AC) for differential signals as shown in Table and Figure
below.
Differential output slew rate definition
Description
Differential output slew rate for rising edge
Differential output slew rate for falling edge
V
V
Measured
FromTo
(AC)V
OLdiff
(AC)V
OHdiff
OHdiff
OLdiff
(AC)
(AC)
[V
[V
OHdiff
OHdiff
Defined by
(AC)-V
OLdiff
Delta TRdiff
(AC)-V
OLdiff
Delta TFdiff
NOTE :
1. Output slew rate is verified by design and characterization, and may not be subject to production test.
Supported CL Settings with read DBI 12,13,14,15,17,18,19,20,21,22,23nCK
Supported CWL Settings 9,10,11,12,14,16,18nCK
Rev. 1.7 / Jun.201652
Page 53
Speed Bin Table Notes
Absolute Specification
- VDDQ = VDD = 1.20V +/- 0.06 V
- VPP = 2.5V +0.25/-0.125 V
- The values defined with above-mentioned table are DLL ON case.
- DDR4-1600, 1866, 2133 and 2400 Speed Bin Tables are valid only when Geardown Mode is disabled.
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 require
ments 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 guaranteed. An application should use
the next smaller JEDEC standard tCK(avg) value (1.5, 1.25, 1.071, 0.938 or 0.833 ns) when calculating
CL [nCK] = tAA [ns] / tCK(avg) [ns], rounding up to the next ‘Supported CL’, where tAA = 12.5ns and
tCK(avg) = 1.3 ns should only be used for CL = 10 calculation.
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. 1.5ns or 1.25ns or 1.071 ns or 0.938 ns or 0.833 ns). This result
is tCK(avg).MAX corresponding to CL SELECTED.
4. ‘Reserved’ settings are not allowed. User must program a different value.
5. 'Optional' settings allow certain devices in the industry to support this setting, however, it is not a
mandatory feature. Refer to supplier's data sheet and/or the DIMM SPD information if and how this
setting is supported.
6. Any DDR4-1866 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.
7. Any DDR4-2133 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 DDR4-2400 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. Any DDR4-2666 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.
10. DDR4-1600 AC timing apply if DRAM operates at lower than 1600 MT/s data rate.
11. Parameters apply from tCK(avg)min to tCK(avg)max at all standard JEDEC clock period values as
stated in the Speed Bin Tables.
12. CL number in parentheses, it means that these numbers are optional.
13. DDR4 SDRAM supports CL=9 as long as a system meets tAA(min).
14. Each speed bin lists the timing requirements that need to be supported in order for a given DRAM to
be JEDEC compliant. JEDEC compliance does not require support for all speed bins within a given
speed. JEDEC compliance requires meeting the parameters for a least one of the listed speed bins.
-
Rev. 1.7 / Jun.201653
Page 54
IDD and IDDQ Specification Parameters and Test Conditions
IDD, IPP and IDDQ Measurement Conditions
In this chapter, IDD, IPP and IDDQ measurement conditions such as test load and patterns are defined.
Figure shows the setup and test load for IDD, IPP and IDDQ measurements.
•IDD currents (such as IDD0, IDD0A, IDD1, IDD1A, IDD2N, IDD2NA, IDD2NL, IDD2NT, IDD2P, IDD2Q,
IDD3N, IDD3NA, IDD3P, IDD4R, IDD4RA, IDD4W, IDD4WA, IDD5B, IDD5F2, IDD5F4, IDD6N, IDD6E,
IDD6R, IDD6A, IDD7 and IDD8) are measured as time-averaged currents with all VDD balls of the
DDR4 SDRAM under test tied together. Any IPP or IDDQ current is not included in IDD currents.
•IPP currents have the same definition as IDD except that the current on the VPP supply is measured.
•IDDQ currents (such as IDDQ2NT and IDDQ4R) are measured as time-averaged currents with all
VDDQ balls of the DDR4 SDRAM under test tied together. Any IDD current is not included in IDDQ cur
rents.
Attention: IDDQ values cannot be directly used to calculate IO power of the DDR4 SDRAM. They can
be used to support correlation of simulated IO power to actual IO power as outlined in Figure 2. In
DRAM module application, IDDQ cannot be measured separately since VDD and VDDQ are using one
merged-power layer in Module PCB.
For IDD, IPP and IDDQ measurements, the following definitions apply:
•“0” and “LOW” is defined as VIN <= VILAC(max).
•“1” and “HIGH” is defined as VIN >= VIHAC(min).
•“MID-LEVEL” is defined as inputs are VREF = VDD / 2.
•Timings used for IDD, IPP and IDDQ Measurement-Loop Patterns are provided in Table 1.
•Basic IDD, IPP and IDDQ Measurement Conditions are described in Table 2.
•Detailed IDD, IPP and IDDQ Measurement-Loop Patterns are described in Table 3 through Table 11.
•IDD Measurements are done after properly initializing the DDR4 SDRAM. This includes but is not limited to setting
RON = RZQ/7 (34 Ohm in MR1);
RTT_NOM = RZQ/6 (40 Ohm in MR1);
RTT_WR = RZQ/2 (120 Ohm in MR2);
RTT_PARK = Disable;
Qoff = 0B (Output Buffer enabled) in MR1;
TDQS_t disabled in MR1;
CRC disabled in MR2;
CA parity feature disabled in MR5;
Gear down mode disabled in MR3
Read/Write DBI disabled in MR5;
DM disabled in MR5
•Attention: The IDD, IPP and IDDQ Measurement-Loop Patterns need to be executed at least one time
before actual IDD or IDDQ measurement is started.
1. DIMM level Output test load condition may be different from above
Figure 1 - Measurement Setup and Test Load for IDD, IPP and IDDQ Measurements
Figure 2 - Correlation from simulated Channel IO Power to actual Channel IO Power supported by IDDQ
Measurement
Rev. 1.7 / Jun.201655
Page 56
Table 1 -Timings used for IDD, IPP and IDDQ Measurement-Loop Patterns
Symbol
tCK1.251.0710.9370.833ns
CL11131517nCK
CWL11121417nCK
nRCD11131517nCK
nRC39455156nCK
nRAS28323639nCK
nRP11131517nCK
x416161616nCK
nFAW
nRRDS
nRRDL
nRFC 2Gb128150171193nCK
nRFC 4Gb208243278313nCK
nRFC 8Gb280327374421nCK
nRFC 16GbTBDTBDTBDTBDnCK
x820222326nCK
x1628283236nCK
x44444nCK
x84444nCK
x165567nCK
x45566nCK
x85566nCK
x166678nCK
tCCD_S4444nCK
tCCD_L5566nCK
tWTR_S2333nCK
tWTR_L6789nCK
DDR4-1600DDR4-1866DDR4-2133DDR4-2400
11-11-1113-13-1315-15-1517-17-17
Unit
Rev. 1.7 / Jun.201656
Page 57
Table 2 -Basic IDD, IPP and IDDQ Measurement Conditions
SymbolDescription
Operating One Bank Active-Precharge Current (AL=0)
CKE: High; External clock: On; tCK, nRC, nRAS, CL: see Table 1; BL: 81; AL: 0; CS_n: High
IDD0
IDD0A
IPP0
IDD1
IDD1A
IPP1
IDD2N
IDD2NA
IPP2N
IDD2NT
IDDQ2NT
(Optional)
IDD2NL
IDD2NG
IDD2ND
between ACT and PRE; Command, Address, Bank Group Address, Bank Address Inputs: partially
toggling according to Table 3; Data IO: VDDQ; DM_n: stable at 1; Bank Activity: Cycling with one
bank active at a time: 0,0,1,1,2,2,... (see Table 3); Output Buffer and RTT: Enabled in Mode
Registers
2
; ODT Signal: stable at 0; Pattern Details: see Table 3
Operating One Bank Active-Precharge Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD0
Operating One Bank Active-Precharge IPP Current
Same condition with IDD0
Operating One Bank Active-Read-Precharge Current (AL=0)
CKE: High; External clock: On; tCK, nRC, nRAS, nRCD, CL: see Table 1; BL: 81; AL: 0; CS_n: High
between ACT, RD and PRE; Command, Address, Bank Group Address, Bank Address Inputs,
Data IO: partially toggling according to Table 4; DM_n: stable at 1; Bank Activity: Cycling with one
bank active at a time: 0,0,1,1,2,2,... (see Table 4); Output Buffer and RTT: Enabled in Mode
2
Registers
; ODT Signal: stable at 0; Pattern Details: see Table 4
Operating One Bank Active-Read-Precharge Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD1
Operating One Bank Active-Read-Precharge IPP Current
Same condition with IDD1
Precharge Standby Current (AL=0)
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: stable at 1; Command,
Address, Bank Group Address, Bank Address Inputs: partially toggling according to Table 5; Data
IO: VDDQ; DM_n: stable at 1; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in
2
Mode Registers
; ODT Signal: stable at 0; Pattern Details: see Table 5
Precharge Standby Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD2N
Precharge Standby IPP Current
Same condition with IDD2N
Precharge Standby ODT Current
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: stable at 1; Command,
Address, Bank Group Address, Bank Address Inputs: partially toggling according to Table 6; Data
IO: VSSQ; DM_n: stable at 1; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in
2
Mode Registers
; ODT Signal: toggling according to Table 6; Pattern Details: see Table 6
Precharge Standby ODT IDDQ Current
Same definition like for IDD2NT, however measuring IDDQ current instead of IDD current
Precharge Standby Current with CAL enabled
Same definition like for IDD2N, CAL enabled
3
Precharge Standby Current with Gear Down mode enabled
Same definition like for IDD2N, Gear Down mode enabled
3
Precharge Standby Current with DLL disabled
Same definition like for IDD2N, DLL disabled
3
Rev. 1.7 / Jun.201657
Page 58
IDD2N_par
IDD2P
IPP2P
IDD2Q
IDD3N
IDD3NA
IPP3N
IDD3P
IPP3P
IDD4R
IDD4RA
IDD4RB
IPP4R
IDDQ4R
(Optional)
IDDQ4RB
(Optional)
Precharge Standby Current with CA parity enabled
Same definition like for IDD2N, CA parity enabled
3
Precharge Power-Down Current CKE: Low; External clock: On; tCK, CL: see Table 1; BL: 81; AL:
0; CS_n: stable at 1; Command, Address, Bank Group Address, Bank Address Inputs: stable at
0; Data IO: VDDQ; DM_n: stable at 1; Bank Activity: all banks closed; Output Buffer and RTT:
2
Enabled in Mode Registers
; ODT Signal: stable at 0
Precharge Power-Down IPP Current
Same condition with IDD2P
Precharge Quiet Standby Current
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: stable at 1; Command,
Address, Bank Group Address, Bank Address Inputs: stable at 0; Data IO: VDDQ; DM_n: stable
at 1;Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers
2
; ODT
Signal: stable at 0
Active Standby Current
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: stable at 1; Command,
Address, Bank Group Address, Bank Address Inputs: partially toggling according to Table 5; Data
IO: VDDQ; DM_n: stable at 1;Bank Activity: all banks open; Output Buffer and RTT: Enabled in
Mode Registers
2
; ODT Signal: stable at 0; Pattern Details: see Table 5
Active Standby Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD3N
Active Standby IPP Current
Same condition with IDD3N
Active Power-Down Current
CKE: Low; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: stable at 1; Command,
Address, Bank Group Address, Bank Address Inputs: stable at 0; Data IO: VDDQ; DM_n: stable
at 1; Bank Activity: all banks open; Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal:
stable at 0
Active Power-Down IPP Current
Same condition with IDD3P
Operating Burst Read Current
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 82; AL: 0; CS_n: High between RD;
Command, Address, Bank Group Address, Bank Address Inputs: partially toggling according to
Tab l e 7 ; Data IO: seamless read data burst with different data between one burst and the next one
according to Table 7; DM_n: stable at 1; Bank Activity: all banks open, RD commands cycling through
banks: 0,0,1,1,2,2,... (see Table 7); Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal :
stable at 0; Pattern Details: see Table 7
Operating Burst Read Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD4R
Operating Burst Read Current with Read DBI
Read DBI enabled3, Other conditions: see IDD4R
Operating Burst Read IPP Current
Same condition with IDD4R
Operating Burst Read IDDQ Current
Same definition like for IDD4R, however measuring IDDQ current instead of IDD current
Operating Burst Read IDDQ Current with Read DBI
Same definition like for IDD4RB, however measuring IDDQ current instead of IDD current
Rev. 1.7 / Jun.201658
Page 59
IDD4W
IDD4WA
IDD4WB
IDD4WC
IDD4W_par
IPP4W
IDD5B
IPP5B
IDD5F2
IPP5F2
IDD5F4
IPP5F4
IDD6N
IPP6N
IDD6E
IPP6E
Operating Burst Write Current
CKE: High; External clock: On; tCK, CL: see Table 1; BL: 81; AL: 0; CS_n: High between WR;
Command, Address, Bank Group Address, Bank Address Inputs: partially toggling according to
Tab l e 8 ; Data IO: seamless write data burst with different data between one burst and the next one
according to Table 8; DM_n: stable at 1; Bank Activity: all banks open, WR commands cycling through
banks: 0,0,1,1,2,2,... (see Table 8); Output Buffer and RTT: Enabled in Mode Registers
stable at
HIGH; Pattern Details: see Table 8
2
; ODT Signal :
Operating Burst Write Current (AL=CL-1)
AL = CL-1, Other conditions: see IDD4W
Operating Burst Write Current with Write DBI
Write DBI enabled3, Other conditions: see IDD4W
Operating Burst Write Current with Write CRC
Write CRC enabled3, Other conditions: see IDD4W
Operating Burst Write Current with CA Parity
CA Parity enabled3, Other conditions: see IDD4W
Operating Burst Write IPP Current
Same condition with IDD4W
Burst Refresh Current (1X REF)
CKE: High; External clock: On; tCK, CL, nRFC: see Table 1; BL: 81; AL: 0; CS_n: High between REF;
Command, Address, Bank Group Address, Bank Address Inputs: partially toggling according to Tab l e 9 ; Data IO: VDDQ; DM_n: stable at 1; Bank Activity: REF command every nRFC (see Table 9);
Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal: stable at 0; Pattern Details: see
Tab l e 9
Burst Refresh Write IPP Current (1X REF)
Same condition with IDD5B
Burst Refresh Current (2X REF)
tRFC=tRFC_x2, Other conditions: see IDD5B
Burst Refresh Write IPP Current (2X REF)
Same condition with IDD5F2
Burst Refresh Current (4X REF)
tRFC=tRFC_x4, Other conditions: see IDD5B
Burst Refresh Write IPP Current (4X REF)
Same condition with IDD5F4
Off; CK_t and CK_c#: LOW; CL: see Table 1; BL: 8
Address, Bank Address, Data IO: High; DM_n: stable at 1; Bank Activity: Self-Refresh operation;
Output Buffer and RTT: Enabled in Mode Registers
1
; AL: 0; CS_n#, Command, Address, Bank Group
2
; ODT Signal: MID-LEVEL
Self Refresh IPP Current: Normal Temperature Range
Same condition with IDD6N
Off; CK_t and CK_c: LOW; CL: see Table 1; BL: 81; AL: 0; CS_n, Command, Address, Bank Group Address, Bank Address, Data IO: High; DM_n:stable at 1; Bank Activity: Extended Temperature
Self-Refresh operation; Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal: MID-LEVEL
Self Refresh IPP Current: Extended Temperature Range
Same condition with IDD6E
External clock: Off; CK_t and CK_c#: LOW; CL: see Table 1; BL: 81; AL: 0; CS_n#, Command,
Address, Bank Group Address, Bank Address, Data IO: High; DM_n:stable at 1; Bank Activity:
Extended Temperature Self-Refresh operation; Output Buffer and RTT: Enabled in Mode Registers
2
;
ODT Signal: MID-LEVEL
Self Refresh IPP Current: Reduced Temperature Range
Same condition with IDD6R
Auto Self-Refresh Current
T
: 0 - 95°C; Low Power Array Self Refresh (LP ASR) : Auto4; CKE: Low; External c lock : Off;
CASE
CK_t and CK_c#: LOW; CL: see Table 1; BL: 81; AL: 0; CS_n#, Command, Address, Bank Group
Address, Bank Address, Data IO: High; DM_n:stable at 1; Bank Activity: Auto Self-Refresh
operation; Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal: MID-LEVEL
Auto Self-Refresh IPP Current
Same condition with IDD6A
Operating Bank Interleave Read Current
CKE: High; External clock: On; tCK, nRC, nRAS, nRCD, nRRD, nFAW, CL: see Table 1; BL: 81; AL:
CL-1; CS_n: High between ACT and RDA; Command, Address, Bank Group Address, Bank Address
Inputs: partially toggling according to Table 10; Data IO: read data bursts with different data between
one burst and the next one according to Table 10; DM_n: stable at 1; Bank Activity: two times
interleaved cycling through banks (0, 1, ...7) with different addressing, see Table 10; Output Buffer and RTT: Enabled in Mode Registers
2
; ODT Signal: stable at 0; Pattern Details: see Table 10
Operating Bank Interleave Read IPP Current
Same condition with IDD7
Maximum Power Down Current
TBD
Maximum Power Down IPP Current
Same condition with IDD8
Rev. 1.7 / Jun.201660
Page 61
NOTE :
1. Burst Length: BL8 fixed by MRS: set MR0 [A1:0=00].
20 4*nFAWrepeat pattern 2 ... 3 until nRC - 1, if nRC > 4*nFAW. Truncate if necessary
NOTE :
1. DQS_t, DQS_c are VDDQ.
2. BG1 is don’t care for x16 device.
3. C[2:0] are used only for 3DS device.
4. Burst Sequence driven on each DQ signal by Read Command. Outside burst operation, DQ signals are VDDQ
For x4 and x8
only
Rev. 1.7 / Jun.201670
Page 71
IDD Specifications
Module IDD values in the datasheet are only a calculation based on the component IDD spec and register power. The
actual measurements may vary according to DQ loading cap.