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參數(shù)資料
| 型號(hào)： | W971GG6IB-25 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | DRAM |
| 英文描述： | 32M X 16 DDR DRAM, 0.4 ns, PBGA84 |
| 封裝： | 8 X 12.50 MM, ROHS COMPLIANT, WBGA-84 |
| 文件頁數(shù)： | 5/86頁 |
| 文件大?。?/td> | 1360K |
| 代理商： | W971GG6IB-25 |
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W971GG6IB
Publication Release Date: Oct. 23, 2009
- 13 -
Revision A02
7.2.2.3
Extend Mode Register Set Command (2), EMR (2)
( CS = "L", RAS = "L", CAS = "L", WE = "L", BA0 = "L", BA1 = "H", BA2 = "L" A0 to A12 =
Register data)
The extended mode register (2) controls refresh related features. The default value of the extended
mode register (2) is not defined, therefore the extended mode register (2) must be programmed during
initialization for proper operation.
The DDR2 SDRAM should be in all bank precharge state with CKE already high prior to writing into
the extended mode register (2). The mode register set command cycle time (tMRD) must be satisfied to
complete the write operation to the extended mode register (2). Mode register contents can be
changed using the same command and clock cycle requirements during normal operation as long as
all banks are in the precharge state.
BA1 BA0 A12
A11 A10
A9
A8A7
A6A5
A4A3
A2
A1A0
1
0
SELF
0*1
Address Field
Extended Mode Register (2)
0*1
BA2
0*1
BA1 BA0
MRS mode
0
1
11
MRS
EMR (1)
EMR (2)
EMR (3)
A7
1
0
Disable
High Temperature Self Refresh Rate Enable
Enable*2
Notes:
1. The rest bits in EMR (2) is reserved for future use and all bits in EMR (2) except A7, BA0, BA1 and BA2 must be programmed
to 0 when setting the extended mode register (2) during initialization.
2. When DRAM is operated at 85 °C ≤ TCASE ≤ 95 °C the extended Self Refresh rate must be enabled by setting bit A7 to "1"
before the Self Refresh mode can be entered.
Figure 4—EMR (2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W9751G6JB-25A | 32M X 16 DDR DRAM, 0.4 ns, PBGA84 |
| W9751G8JB-18 | DDR DRAM, PBGA84 |
| W9812G21H-6I | 4M X 32 SYNCHRONOUS DRAM, 5 ns, PDSO86 |
| W9812G21H-6C | 4M X 32 SYNCHRONOUS DRAM, 4.5 ns, PDSO86 |
| W9812G6JH-6 | 8M X 16 SYNCHRONOUS DRAM, 5 ns, PDSO54 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W971GG6JB | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8M ? 8 BANKS ? 16 BIT DDR2 SDRAM |
| W971GG6JB-18 | 制造商:Winbond Electronics Corp 功能描述:1GB DDR2 制造商:Winbond Electronics Corp 功能描述:IC DDR2 SDRAM 1GBIT 1.875NS |
| W971GG6JB-25 | 制造商:Winbond Electronics Corp 功能描述:DRAM Chip DDR2 SDRAM 1G-Bit 64Mx16 1.8V 84-Pin WBGA 制造商:Winbond Electronics 功能描述:64MBX16 DDR2 制造商:Winbond 功能描述:DRAM Chip DDR2 SDRAM 1G-Bit 64Mx16 1.8V 84-Pin WBGA |
| W971GG6JB25I | 功能描述:IC DDR2 SDRAM 1GBIT 84WBGA RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類型:EEPROM 存儲(chǔ)容量:32K (4K x 8) 速度:100kHz，400kHz 接口:I²C，2 線串口 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) 其它名稱:CAV24C32WE-GT3OSTR |
| W971GG6JB-25I | 制造商:Winbond Electronics 功能描述:-40~85 1GB DDR2 FOR INDUSTRY |
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