Electrical Specifications
Stresses greater than those listed may cause permanent damage to the module. This is a
stress rating only, and functional operation of the module at these or any other condi-
tions outside those indicated in the device data sheet are not implied. Exposure to
absolute maximum rating conditions for extended periods may adversely affect reliability.
Table 9: Absolute Maximum Ratings
Symbol Parameter Min Max Units
V
DD
/V
DDQ
V
DD
/V
DDQ
supply voltage relative to V
SS
–0.5 2.3 V
V
IN
, V
OUT
Voltage on any pin relative to V
SS
–0.5 2.3 V
I
I
Input leakage current; Any input 0V V
IN
V
DD
;
V
REF
input 0V V
IN
0.95V; (All other pins not
under test = 0V)
Address inputs, RAS#,
CAS#, WE#, BA
–80 80 µA
S#, CKE, ODT –40 40
CK0, CK0# –20 20
CK1, CK1#, CK2, CK2# –30 30
DM –10 10
I
OZ
Output leakage current; 0V V
OUT
; DQ and ODT
are disabled
DQ, DQS, DQS# –10 10 µA
I
VREF
V
REF
leakage current; V
REF
= valid V
REF
level –32 32 µA
T
A
Module ambient operating temperature Commercial 0 70 °C
Industrial –40 85 °C
T
C
1
DDR2 SDRAM component operating tempera-
ture
2
Commercial 0 85 °C
Industrial –40 95 °C
Notes:
1. The refresh rate is required to double when T
C
exceeds 85°C.
2. For further information, refer to technical note TN-00-08: "Thermal Applications," avail-
able on Micron’s Web site.
512MB, 1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 UDIMM
Electrical Specifications
PDF: 09005aef80f09084
htf16c64_128_256x64ay.pdf - Rev. G 3/10 EN
10
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2003 Micron Technology, Inc. All rights reserved.
DRAM Operating Conditions
Recommended AC operating conditions are given in the DDR2 component data sheets.
Component specifications are available on Micron's Web site. Module speed grades cor-
relate with component speed grades.
Table 10: Module and Component Speed Grades
DDR2 components may exceed the listed module speed grades; module may not be available in all listed speed grades
Module Speed Grade Component Speed Grade
-1GA -187E
-80E -25E
-800 -25
-667 -3
-53E -37E
-40E -5E
Design Considerations
Simulations
Micron memory modules are designed to optimize signal integrity through carefully de-
signed terminations, controlled board impedances, routing topologies, trace length
matching, and decoupling. However, good signal integrity starts at the system level. Mi-
cron encourages designers to simulate the signal characteristics of the system's memo-
ry bus to ensure adequate signal integrity of the entire memory system.
Power
Operating voltages are specified at the DRAM, not at the edge connector of the module.
Designers must account for any system voltage drops at anticipated power levels to en-
sure the required supply voltage is maintained.
512MB, 1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 UDIMM
DRAM Operating Conditions
PDF: 09005aef80f09084
htf16c64_128_256x64ay.pdf - Rev. G 3/10 EN
11
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2003 Micron Technology, Inc. All rights reserved.
I
DD
Specifications
Table 11: DDR2 I
DD
Specifications and Conditions – 512MB
Values shown for MT47H32M8 DDR2 SDRAM only and are computed from values specified in the 256Mb (32 Meg x 8)
component data sheet
Parameter Symbol -667 -53E -40E Units
Operating one bank active-precharge current:
t
CK =
t
CK (I
DD
),
t
RC =
t
RC
(I
DD
),
t
RAS =
t
RAS MIN (I
DD
); CKE is HIGH, S# is HIGH between valid commands;
Address bus inputs are switching; Data bus inputs are switching
I
DD0
1
760 680 640 mA
Operating one bank active-read-precharge current: I
OUT
= 0mA; BL = 4, CL
= CL (I
DD
), AL = 0;
t
CK =
t
CK (I
DD
),
t
RC =
t
RC (I
DD
),
t
RAS =
t
RAS MIN (I
DD
),
t
RCD =
t
RCD (I
DD
); CKE is HIGH, S# is HIGH between valid commands; Address bus in-
puts are switching; Data pattern is same as I
DD4W
I
DD1
1
840 760 720 mA
Precharge power-down current: All device banks idle;
t
CK =
t
CK (I
DD
); CKE is
LOW; Other control and address bus inputs are stable; Data bus inputs are float-
ing
I
DD2P
2
80 80 80 mA
Precharge quiet standby current: All device banks idle;
t
CK =
t
CK (I
DD
); CKE
is HIGH, S# is HIGH; Other control and address bus inputs are stable; Data bus
inputs are floating
I
DD2Q
2
640 560 400 mA
Precharge standby current: All device banks idle;
t
CK =
t
CK (I
DD
); CKE is
HIGH, S# is HIGH; Other control and address bus inputs are switching; Data bus
inputs are switching
I
DD2N
2
640 560 480 mA
Active power-down current: All device banks open;
t
CK =
t
CK (I
DD
); CKE is LOW; Other control and address bus inputs are
stable; Data bus inputs are floating
Fast PDN exit
MR[12] = 0
I
DD3P
2
480 400 320 mA
Slow PDN exit
MR[12] = 1
96 96 96
Active standby current: All device banks open;
t
CK =
t
CK (I
DD
),
t
RAS =
t
RAS
MAX (I
DD
),
t
RP =
t
RP (I
DD
); CKE is HIGH, S# is HIGH between valid commands;
Other control and address bus inputs are switching; Data bus inputs are switching
I
DD3N
2
800 640 480 mA
Operating burst write current: All device banks open; Continuous burst
writes; BL = 4, CL = CL (I
DD
), AL = 0;
t
CK =
t
CK (I
DD
),
t
RAS =
t
RAS MAX (I
DD
),
t
RP =
t
RP (I
DD
); CKE is HIGH, S# is HIGH between valid commands; Address bus inputs
are switching; Data bus inputs are switching
I
DD4W
1
1560 1320 1040 mA
Operating burst read current: All device banks open; Continuous burst read,
I
OUT
= 0mA; BL = 4, CL = CL (I
DD
), AL = 0;
t
CK =
t
CK (I
DD
),
t
RAS =
t
RAS MAX (I
DD
),
t
RP =
t
RP (I
DD
); CKE is HIGH, S# is HIGH between valid commands; Address bus
inputs are switching; Data bus inputs are switching
I
DD4R
1
1480 1240 960 mA
Burst refresh current:
t
CK =
t
CK (I
DD
); REFRESH command at every
t
RFC (I
DD
)
interval; CKE is HIGH, S# is HIGH between valid commands; Other control and
address bus inputs are switching; Data bus inputs are switching
I
DD5
2
2880 2720 2640 mA
Self refresh current: CK and CK# at 0V; CKE 0.2V; Other control and ad-
dress bus inputs are floating; Data bus inputs are floating
I
DD6
2
80 80 80 mA
512MB, 1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 UDIMM
I
DD
Specifications
PDF: 09005aef80f09084
htf16c64_128_256x64ay.pdf - Rev. G 3/10 EN
12
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2003 Micron Technology, Inc. All rights reserved.

MT16HTF25664AY-667E1

Mfr. #:
Manufacturer:
Micron
Description:
MODULE DDR2 SDRAM 2GB 240UDIMM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet