MT41J256M8HX-15E:D Micron Technology Inc, MT41J256M8HX-15E:D Datasheet - Page 152

• Manufacturer Part Number: MT41J256M8HX-15E:D
• Description: MICMT41J256M8HX-15E:D 2GB:X4,X8,X16 DDR3
• Manufacturer: Micron Technology Inc
• Type: DDR3 SDRAMr
• Series: -r

Specifications of MT41J256M8HX-15E:D

• Organization: 256Mx8
• Address Bus: 18b
• Maximum Clock Rate: 1.333GHz
• Operating Supply Voltage (typ): 1.5V
• Package Type: FBGA
• Operating Temp Range: 0C to 95C
• Operating Supply Voltage (max): 1.575V
• Operating Supply Voltage (min): 1.425V
• Supply Current: 165mA
• Pin Count: 78
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Format - Memory: RAM
• Memory Type: DDR3 SDRAM
• Memory Size: 2G (256M x 8)
• Speed: 667MHz
• Interface: Parallel
• Voltage - Supply: 1.425 V ~ 1.575 V
• Operating Temperature: 0°C ~ 95°C
• Package / Case: 78-TFBGA
• Lead Free Status / RoHS Status: Compliant

Extended Temperature Usage
Table 74:
Table 75:
PDF: 09005aef826aaadc/Source: 09005aef82a357c3
DDR3_D4.fm - Rev G 2/09 EN
Field
MR2[6]
Self Refresh Temperature (SRT)
Auto Self Refresh (ASR)
(ASR)
ASR
SRT
0
0
1
1
MR2[7]
MR2 Bits
(SRT)
0
1
0
1
Self Refresh Temperature and Auto Self Refresh Description
Self Refresh Mode Summary
7
6
SELF REFRESH Operation
Self refresh mode is supported in the normal temperature range Normal (0°C to 85°C)
Self refresh mode is supported in normal and extended
temperature ranges; When SRT is enabled, it increases self
refresh power consumption
Self refresh mode is supported in normal and extended
temperature ranges; Self refresh power consumption may be
temperature-dependent
Illegal
Description
If ASR is disabled (MR2[6] = 0), SRT must be programmed to indicate T
*MR2[7] = 0: Normal operating temperature range (0°C to 85°C)
*MR2[7] = 1: Extended operating temperature range (0°C to 95°C)
If ASR is enabled (MR2[7] = 1), SRT must be set to 0, even if the extended temperature range is
supported
*MR2[7] = 0: SRT is disabled
When ASR is enabled, the DRAM automatically provides SELF REFRESH power management
functions, (refresh rate for all supported operating temperature values)
* MR2[6] = 1: ASR is enabled (M7 must = 0)
When ASR is not enabled, the SRT bit must be programmed to indicate T
operation
* MR2[6] = 0: ASR is disabled, must use manual self refresh temperature (SRT)
Micron’s DDR3 SDRAM support the optional extended temperature range of 0°C to 95°C,
T
The extended temperature range DRAM must be refreshed externally at 2X (double
refresh) anytime the case temperature is above 85°C (and does not exceed 95°C). The
external refreshing requirement is accomplished by reducing the refresh period from
64ms to 32ms. However, self refresh mode requires either ASR or SRT to support the
extended temperature. Thus either ASR or SRT must be enabled when T
or self refresh cannot be used until the case temperature is at or below 85°C. Table 74
summarizes the two extended temperature options and Table 75 summarizes how the
two extended temperature options relate to one another.
C
. Thus, the SRT and ASR options must be used at a minimum.
152
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2Gb: x4, x8, x16 DDR3 SDRAM
Permitted Operating Temperature
Range for Self Refresh Mode
Normal and extended (0°C to 95°C)
Normal and extended (0°C to 95°C)
OPER
©2006 Micron Technology, Inc. All rights reserved.
OPER
during self refresh:
during SELF REFRESH
C
is above 85°C
Operations