参数资料
型号: W9725G6KB-25I
厂商: Winbond Electronics
文件页数: 14/87页
文件大小: 0K
描述: IC DDR2 SDRAM 256MBIT 84WBGA
标准包装: 209
格式 - 存储器: RAM
存储器类型: DDR2 SDRAM
存储容量: 256M(16Mx16)
速度: 2.5ns
接口: 并联
电源电压: 1.7 V ~ 1.9 V
工作温度: -40°C ~ 95°C
封装/外壳: 84-TFBGA
供应商设备封装: 84-WBGA(8x12.5)
包装: *
其它名称: Q7118748
W9725G6KB
8.2.2.4
Extend Mode Register Set Command (3), EMR (3)
( CS = "L", RAS = "L", CAS = "L", WE = "L", BA0 = "H", BA1 = "H", A0 to A12 = Register data)
No function is defined in extended mode register (3). The default value of the EMR (3) is not defined,
therefore the EMR (3) must be programmed during initialization for proper operation.
BA1 BA0 A12 A11 A10 A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Address Field
1
1
0* 1
Extended Mode Register (3)
Note:
1. All bits in EMR (3) except BA0 and BA1 are reserved for future use and must be set to 0 when programming the EMR (3).
Figure 5 – EMR (3)
Publication Release Date: Sep. 03, 2012
- 14 -
Revision A03
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