MT47H32M16HR-25E AIT:G Micron, MT47H32M16HR-25E AIT:G Datasheet - Page 10

• Manufacturer Part Number: MT47H32M16HR-25E AIT:G
• Description: DRAM Chip DDR2 SDRAM 512M-Bit 32Mx16 1.8V 84-Pin FBGA
• Manufacturer: Micron

Automotive Temperature
General Notes
PDF: 09005aef8440dbbc
512mbddr2_ait_aat.pdf – Rev. C 7/11 EN
The automotive temperature (AAT) option, if offered, has two simultaneous require-
ments: ambient temperature surrounding the device cannot be less than –40°C or great-
er than +105°C, and the case temperature cannot be less than –40°C or greater than
+105°C. JEDEC specifications require the refresh rate to double when T
this also requires use of the high-temperature self refresh option. Additionally, ODT re-
sistance, the input/output impedance, and I
or > +85°C.
• The functionality and the timing specifications discussed in this data sheet are for the
• Throughout the data sheet, the various figures and text refer to DQs as “DQ.” The DQ
• A x16 device's DQ bus is comprised of two bytes. If only one of the bytes needs to be
• Complete functionality is described throughout the document, and any page or dia-
• Any specific requirement takes precedence over a general statement.
DLL-enabled mode of operation.
term is to be interpreted as any and all DQ collectively, unless specifically stated oth-
erwise. Additionally, the x16 is divided into 2 bytes: the lower byte and the upper byte.
For the lower byte (DQ0–DQ7), DM refers to LDM and DQS refers to LDQS. For the
upper byte (DQ8–DQ15), DM refers to UDM and DQS refers to UDQS.
used, use the lower byte for data transfers and terminate the upper byte as noted:
– Connect UDQS to ground via 1k * resistor
– Connect UDQS# to V
– Connect UDM to V
– Connect DQ[15:8] individually to either V
*If ODT is used, 1k resistor should be changed to 4x that of the selected ODT.
gram may have been simplified to convey a topic and may not be inclusive of all re-
quirements.
DQ[15:8].
Micron Confidential and Proprietary
DD
DD
via 1k * resistor
via 1k * resistor
10
512Mb: x8, x16 Automotive DDR2 SDRAM
Micron Technology, Inc. reserves the right to change products or specifications without notice.
DD
SS
values must be derated when T
or V
DD
via 1k * resistors, or float
Functional Description
‹ 2010 Micron Technology, Inc. All rights reserved.
C
exceeds +85°C;
C
is < 0°C