H5TQ4G43AMR HYNIX [Hynix Semiconductor], H5TQ4G43AMR Datasheet - Page 12

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H5TQ4G43AMR

Manufacturer Part Number
H5TQ4G43AMR
Description
4Gb DDR3 SDRAM
Manufacturer
HYNIX [Hynix Semiconductor]
Datasheet
IDD and IDDQ Specification Parameters and Test Conditions
IDD and IDDQ Measurement Conditions
In this chapter, IDD and IDDQ measurement conditions such as test load and patterns are defined. Figure
1. shows the setup and test load for IDD and IDDQ measurements.
For IDD and IDDQ measurements, the following definitions apply:
Rev. 1.0 / Dec. 2009
IDD currents (such as IDD0, IDD1, IDD2N, IDD2NT, IDD2P0, IDD2P1, IDD2Q, IDD3N, IDD3P, IDD4R,
IDD4W, IDD5B, IDD6, IDD6ET, IDD6TC 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 cur-
rents.
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 cur-
rents.
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 2. In
DRAM module application, IDDQ cannot be measured separately since VDD and VDDQ are using one
merged-power layer in Module PCB.
”0” and “LOW” is defined as VIN <= V
”1” and “HIGH” is defined as VIN >= V
“MID_LEVEL” is defined as inputs are VREF = VDD/2.
Timing used for IDD and IDDQ Measurement-Loop Patterns are provided in Table 1.
Basic IDD and IDDQ Measurement Conditions are described in Table 2.
Detailed IDD and IDDQ Measurement-Loop Patterns are described in Table 3 through Table 10.
IDD Measurements are done after properly initializing the DDR3 SDRAM. This includes but is not lim-
ited to setting
RON = RZQ/7 (34 Ohm in MR1);
Qoff = 0
RTT_Nom = RZQ/6 (40 Ohm in MR1);
RTT_Wr = RZQ/2 (120 Ohm in MR2);
TDQS Feature disabled in MR1
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}
B
(Output Buffer enabled in MR1);
ILAC(max).
IHAC(max).
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