MT41J256M4JP-15E:G Micron Technology Inc, MT41J256M4JP-15E:G Datasheet - Page 61

• Manufacturer Part Number: MT41J256M4JP-15E:G
• Description: IC DDR3 SDRAM 1GBIT 78FBGA
• Manufacturer: Micron Technology Inc
• Series: -r

Specifications of MT41J256M4JP-15E:G

• Format - Memory: RAM
• Memory Type: DDR3 SDRAM
• Memory Size: 1G (256M x 4)
• 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: Supplier Unconfirmed

Output Driver Impedance
Figure 28: Output Driver
PDF: 09005aef826aa906
1Gb_DDR3_SDRAM.pdf – Rev. J 05/10 EN
The output driver impedance is selected by MR1[5,1] during initialization. The selected
value is able to maintain the tight tolerances specified if proper ZQ calibration is per-
formed. Output specifications refer to the default output driver unless specifically
stated otherwise. A functional representation of the output buffer is shown below. The
output driver impedance Ron is defined by the value of the external reference resistor
RZQ as follows:
• R
The individual pull-up and pull-down resistors (R
lows:
• R
• R
To
other
circuitry
such as
RCV, . . .
ON,x
ON(PU)
ON(PD)
= RZQ/y (with RZQ = 240Ω ±1%; x = 34Ω or 40Ω with y = 7 or 6, respectively)
= (V
= (V
Chip in drive mode
Output driver
DDQ
OUT
R
R
ON(PU)
ON(PD)
I
I
PU
PD
)/|I
- V
OUT
OUT
|, when R
)/|I
OUT
61
|, when R
ON(PU)
I
OUT
Micron Technology, Inc. reserves the right to change products or specifications without notice.
is turned off
ON(PD)
V
DQ
V
V
DDQ
OUT
SSQ
1Gb: x4, x8, x16 DDR3 SDRAM
is turned off
ON(PU)
Output Driver Impedance
and R
© 2006 Micron Technology, Inc. All rights reserved.
ON(PD)
) are defined as fol-