MT48H16M16LFBF-8G 데이터 시트보기 (PDF) - Micron Technology
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MT48H16M16LFBF-8G Datasheet PDF : 71 Pages
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Figure 8: EMR Definition
256Mb: 16 Meg x 16, 8 Meg x 32 Mobile SDRAM
Register Definition
BA1 BA0 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 Address Bus
E14 E13 E12 E11 E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 E0
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
10
set to “0”
DS TCSR1
PASR
Extended Mode
Register
E14 E13 Mode Register Definintion
0 0 Standard mode register
0 1 Reserved
1 0 Extended mode register
1 1 Reserved
E6 E5 Driver Strength
0 0 Full strength driver
0 1 Half strength driver
1 0 Quarter strength driver
1 1 Eighth strength driver
E12 E11 E10 E9
00 0 0
–– – –
E8 E7
00
––
E6–E0
Valid
–
Normal operation
All other states reserved
E2 E1 E0 Partial Array Self Refresh Coverage
0 0 0 Full array
0 0 1 Half array
0 1 0 Quarter array
0 1 1 Reserved
1 0 0 Reserved
1 0 1 One-eighth array
1 1 0 One-sixteenth array
1 1 1 Reserved
Notes: 1. On-die temperature sensor is used in place of TCSR. Setting these bits will have no effect.
The EMR must be loaded when all banks are idle and no bursts are in progress, and the
controller must wait the specified time before initiating any subsequent operation.
Violating either of these requirements results in unspecified operation. Once the values
are entered, the EMR settings will be retained even after exiting deep power-down mode.
Temperature-Compensated Self Refresh (TCSR)
On this version of the Mobile SDR SDRAM, a temperature sensor is implemented for
automatic control of the self refresh oscillator on the device. Therefore, it is recom-
mended not to program or use the temperature-compensated self refresh control bits in
the extended mode register.
Programming of the TCSR bits has no effect on the device. The self refresh oscillator will
continue refresh at the factory programmed optimal rate for the device temperature.
PDF:09005aef8219eeeb/Source: 09005aef8219eedd
MT48H16M16LF_2.fm - Rev F 4/07 EN
17
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2006 Micron Technology, Inc. All rights reserved.
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