K4B4G0446B
K4B4G0846B
DDP的4Gb DDR3 SDRAM
目录
1.0订购信息...................................................................................................................五
2.0主要特点................................................................................................................................五
3.0封装引脚/机械尺寸&地址.......................................... .................. 6
3.1 X4 DDP封装引脚(顶视图) : 78ball FBGA封装
.............................................................. 6
3.2 x8的DDP封装引脚(顶视图) : 78ball FBGA封装
.............................................................. 7
3.3 FBGA封装尺寸( X4)
..................................................................................................... 8
3.4 FBGA封装尺寸( X8 )
..................................................................................................... 9
4.0输入/输出功能描述............................................ ........................................... 10
5.0 DDR3 SDRAM地址........................................................................................................ 11
6.0绝对最大额定值...................................................................................................... 12
6.1绝对最大额定直流电压
................................................................................................... 12
6.2 DRAM元件工作温度范围
......................................................................... 12
7.0交流& DC操作条件............................................ .................................................. .. 12
7.1建议的直流工作条件( SSTL_1.5 )
..................................................................... 12
8.0交流&直流输入测量级别........................................... ............................................. 13
8.1交流和直流逻辑输入电平为单端singnals
................................................................ 13
8.2 VREF公差
....................................................................................................................... 14
8.3交流和直流逻辑输入电平为Ditterential信号
................................................................... 15
8.3.1差分信号定义
................................................................................................ 15
8.3.2差分摆幅要求时钟( CK - CK)和选通脉冲( DQS - DQS )
.............................. 15
差分信号8.3.3单端的要求
................................................................. 16
8.4差分输入交叉点电压
.......................................................................................... 17
8.5压摆率的定义为单端输入信号
...................................................................... 17
对于差分输入信号8.6压摆率的定义
........................................................................... 17
9.0交流和直流输出测量水平........................................... ...................................... 18
9.1单端交流和直流输出电平
....................................................................................... 18
9.2差分交流和直流输出电平
.......................................................................................... 18
9.3单端输出压摆率
................................................................................................... 18
9.4差分输出摆率
...................................................................................................... 19
9.5参考负载的AC时序和输出摆率
.................................................................... 19
9.6过冲/下冲规格
........................................................................................... 20
9.6.1地址和控制过冲和下冲规格
............................................. 20
9.6.2时钟,数据,选通和面具过冲和下冲规格
................................. 20
9.7 34欧姆输出驱动器的直流电气特性
....................................................................... 21
................................................................. 22
9.8片上端接( ODT)水平和IV特性
............................................................... 22
9.8.1 ODT DC电气特性
........................................................................................ 23
9.8.2 ODT温度和电压灵敏度
............................................................................. 24
9.7.1输出驱动温度和电压灵敏度
第59 3
1.0版2009年3月