W631GG6KB-15 Datasheet, PDF (121/158 Pages) Winbond – Double Data Rate architecture: two data transfers per clock cycle

W631GG6KB
9.13 IDD and IDDQ Specification Parameters and Test Conditions
9.13.1 IDD and IDDQ Measurement Conditions
In this section, IDD and IDDQ measurement conditions such as test load and patterns are defined.
Figure 105 shows the setup and test load for IDD and IDDQ measurements.
 IDD currents (such as IDD0, IDD1, IDD2N, IDD2NT, IDD2P0, IDD2P1, IDD2Q, IDD3N, IDD3P, IDD4R, IDD4W,
IDD5B, IDD6, IDD6ET and IDD7) are measured as time-averaged currents with all VDD balls of the
DDR3 SDRAM under test tied together. Any IDDQ current is not included in IDD currents.
 IDDQ currents (such as IDDQ2NT and IDDQ4R) are measured as time-averaged currents with all
VDDQ balls of the DDR3 SDRAM under test tied together. Any IDD current is not included in IDDQ
currents.
Attention: IDDQ values cannot be directly used to calculate IO power of the DDR3 SDRAM.
They can be used to support correlation of simulated IO power to actual IO power as
outlined in Figure 106. In DRAM module application, IDDQ cannot be measured separately
since VDD and VDDQ are using one merged-power layer in Module PCB.
For IDD 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 and IDDQ Measurement-Loop Patterns are provided in Table 38.
 Basic IDD and IDDQ Measurement Conditions are described in Table 39.
 Detailed IDD and IDDQ Measurement-Loop Patterns are described in Table 40 through Table 47.
 IDD Measurements are done after properly initializing the DDR3 SDRAM. This includes but is not
limited to setting
RON = RZQ/7 (34 Ohm in MR1);
Qoff = 0_b (Output Buffer enabled in MR1);
Rtt_Nom = RZQ/6 (40 Ohm in MR1);
Rtt_WR = RZQ/2 (120 Ohm in MR2);
 Attention: The IDD and IDDQ Measurement-Loop Patterns need to be executed at least one time
before actual IDD or IDDQ measurement is started.
 Define D = {CS#, RAS#, CAS#, WE# } := {HIGH, LOW, LOW, LOW}
 Define D# = {CS#, RAS#, CAS#, WE# } := {HIGH, HIGH, HIGH, HIGH}
Table 38 – Timings used for IDD and IDDQ Measurement-Loop Patterns
Speed Bin
CL-nRCD-nRP
Part Number Extension
tCK
CL
nRCD
nRC
nRAS
nRP
nFAW
nRRD
nRFC 1 Gb
DDR3-1333
9-9-9
-15/15I/15A/15K
1.5
9
9
33
24
9
30
5
74
DDR3-1600
11-11-11
-12/12I/12A/12K
1.25
11
11
39
28
11
32
6
88
DDR3-1866
13-13-13
-11
1.07
13
13
45
32
13
33
6
103
Unit
nS
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
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Publication Release Date: Feb. 27, 2013
Revision A04