參數(shù)資料
型號: MT48H8M16LFB4-8IT:JTR
元件分類: DRAM
英文描述: 8M X 16 SYNCHRONOUS DRAM, 6 ns, PBGA54
封裝: 8 X 8 MM, LEAD FREE, VFBGA-54
文件頁數(shù): 6/61頁
文件大小: 2469K
PDF: 09005aef8237e877/Source: 09005aef8237e8d8
Micron Technology, Inc., reserves the right to change products or specifications without notice.
128Mb_x16 Mobile SDRAM_Y25M_2.fm - Rev. A 6/06 EN
14
2006 Micron Technology, Inc. All rights reserved.
128Mb: x16 Mobile SDRAM
Mode Register Definition
Preliminary
Driver Strength
Bits E5 and E6 of the extended mode register can be used to select the driver strength of
the DQ outputs. This value should be set according to the application’s requirements.
Full drive strength was carried over from standard SDRAM and is suitable to drive higher
load systems. Full drive strength is not recommended for loads under 20pF. Half drive
strength is intended for multi-drop systems with various loads. This drive option is not
recommended for loads under 10pF. Quarter drive strength is intended for lighter loads
or point-to-point systems.
Figure 6:
Extended Mode Register Diagram
Notes:
1. On-die temperature sensor is used in place of the TCSR. Setting these bits has no effect.
2. Default Settings
Maximum Case Temp
E4
E3
A9
A7 A6 A5 A4 A3
A8
A2 A1 A0
Extended Mode
Register (Ex)
Address Bus
9
7
6
5
4
3
8
2
1
0
A10
A11
10
11
12
PASR
TCSR
13
All must be set to "0"
Register Select
BA0
E9
E7 E6 E5 E4 E3
E8
E2 E1 E0
E10
E11
E12
BA1
E13
85°C
11
70°C
00
45°C
15°C
01
10
Self Refresh Coverage
Four Banks
2
Two Banks (Bank 0,1)
One Bank (Bank 0)
Reserved
1/2 Bank (Bank 0)
1/4 Bank (Bank 0)
Reserved
E2
E1
E0
0
1
0
1
DS
E5
E6
Driver Strength
0
1
1 1
Full Strength
2
Quarter Strength
Reserved
Half Strength
Base Mode Register
Extended Mode Register
1
0
M13
M12
0
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT48H8M16LFF3-7E 制造商:Micron Technology Inc 功能描述:
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