W9751G6NB-25原装 DDR2 的描述：
The W9751G6NB is a 512M bits DDR2 SDRAM, organized as 8,388,608 words ′ 4 banks ′ 16 bits. This device achieves high speed transfer rates up to 1066 Mbps (DDR2-1066) for various applications.
W9751G6NB is sorted into the following speed grades: -18, -25, -3, 18I, 25I, -3I, 18J, 25J and -3J. The -18, 18I and 18J grade parts are compliant to the DDR2-1066 (7-7-7) specification (the 18I industrial grade which is guaranteed to support -40°C ≤ TCASE ≤ 95°C, the 18J industrial plus grade which is guaranteed to support -40°C ≤ TCASE ≤ 105°C).
The -25, 25I and 25J grade parts are compliant to the DDR2-800 (5-5-5) or DDR2-800 (6-6-6) specification (the 25I industrial grade which is guaranteed to support -40°C ≤ TCASE ≤ 95°C, the 25J industrial plus grade which is guaranteed to support -40°C ≤ TCASE ≤ 105°C). The -3, -3I and -3J grade parts are compliant to the DDR2-667 (5-5-5) specification (the -3I industrial grade which is guaranteed to support -40°C ≤ TCASE ≤ 95°C, the -3J industrial plus grade which is guaranteed to support -40°C ≤ TCASE ≤ 105°C).
All of the control and address inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at the cross point of differential clocks (CLK rising and CLK falling). All I/Os are synchronized with a single ended DQS or differential DQS- DQS pair in a source synchronous fashion
W9751G6NB-25原装 DDR2 的技术参数：
制造商 | Winbond |
产品种类 | 动态随机存取存储器 |
类型 | SDRAM - DDR2 |
安装风格 | SMD/SMT |
封装 / 箱体 | WBGA-84 |
数据总线宽度 | 16 bit |
组织 | 32 M x 16 |
存储容量 | 512 Mbit |
商标 | Winbond |
产品类型 | DRAM |
电源电流(MAX) | 90 mA |
存储器接口 | 并联 |
时钟频率 | 400 MHz |
写周期时间 - 字，页 | 15ns |
访问时间 | 400 ps |
电压 - 供电 | 1.7V ~ 1.9V |
工作温度 | 0°C ~ 85°C（TC） |
供应商器件封装 | 84-VFBGA（8x12.5） |
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