参数资料
型号: W631GG6KB-15
厂商: Winbond Electronics
文件页数: 105/159页
文件大小: 0K
描述: IC DDR3 SDRAM 1GBIT 96WBGA
标准包装: 200
格式 - 存储器: RAM
存储器类型: DDR3 SDRAM
存储容量: 1G(64M x 16)
速度: 667MHz
接口: 并联
电源电压: 1.425 V ~ 1.575 V
工作温度: 0°C ~ 85°C
封装/外壳: 96-TFBGA
供应商设备封装: 96-WBGA(9x13)
包装: 托盘
W631GG6KB
V DD or V DDQ
V SEH min
V SEH
V DD /2 or V DDQ /2
CK or DQS
V SEL max
V SEL
V SS or V SSQ
time
Figure 91 – Single-ended requirement for differential signals
Note that, while ADD/CMD and DQ signal requirements are with respect to V REF , the single-ended
components of differential signals have a requirement with respect to V DD /2; this is nominally the
same. The transition of single-ended signals through the AC-levels is used to measure setup time. For
single-ended components of differential signals the requirement to reach V SEL max, V SEH min has no
bearing on timing, but adds a restriction on the common mode characteristics of these signals.
10.6.5 Differential Input Cross Point Voltage
To guarantee tight setup and hold times as well as output skew parameters with respect to clock and
strobe, each cross point voltage of differential input signals (CK, CK# and DQS, DQS#) must meet the
requirements in Table 22. The differential input cross point voltage V IX is measured from the actual
cross point of true and complement signals to the midlevel between of V DD and V SS .
V DD
CK#, DQS#
V IX
V DD /2
V IX
V IX
CK, DQS
V SEH
V SEL
V SS
Figure 92 – V IX Definition
Table 22 – Cross point voltage for differential input signals (CK, DQS)
PARAMETER
SYMBOL
DDR3-1333, DDR3-1600 & DDR3-1866
MIN. MAX.
UNIT
NOTES
Differential Input Cross Point Voltage
relative to V DD /2 for CK, CK#
Differential Input Cross Point Voltage
relative to V DD /2 for DQS, DQS#
V IX(CK)
V IX(DQS)
- 150
- 175
-150
150
175
150
mV
mV
mV
2
1
2
Publication Release Date: Dec. 09, 2013
Revision A05
- 105 -
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