MT41J64M16JT-15E AIT:G Micron, MT41J64M16JT-15E AIT:G Datasheet - Page 53

• Manufacturer Part Number: MT41J64M16JT-15E AIT:G
• Description: DRAM Chip DDR3 SDRAM 1G-Bit 64Mx16 1.5V 96-Pin FBGA
• Manufacturer: Micron

Output Driver Impedance
Figure 23: Output Driver
PDF: 09005aef84491df3
1Gb_AIT_AAT_DDR3_SDRAM.pdf – Rev. C 8/11 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 sta-
ted otherwise. A functional representation of the output buffer is shown below. The out-
put driver impedance R
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 = 240
= (V
= (V
Chip in drive mode
Output driver
DDQ
OUT
R
R
ON(PU)
ON(PD)
I
I
PU
PD
)/|I
- V
OUT
OUT
ON
|, when R
)/|I
is defined by the value of the external reference resistor RZQ
OUT
53
|, when R
ON(PU)
1Gb: x8, x16 Automotive DDR3 SDRAM
I
OUT
Micron Technology, Inc. reserves the right to change products or specifications without notice.
is turned off
x
ON(PD)
V
DQ
V
V
DDQ
OUT
SSQ
is turned off
or 40 with y = 7 or 6, respectively)
ON(PU)
Output Driver Impedance
and R
ON(PD)
‹ 2010 Micron Technology, Inc. All rights reserved.
are defined as fol-