参数资料
型号: W948D2FBJX5E
厂商: Winbond Electronics
文件页数: 17/60页
文件大小: 0K
描述: IC LPDDR SDRAM 256MBIT 90VFBGA
标准包装: 240
格式 - 存储器: RAM
存储器类型: 移动 LPDDR SDRAM
存储容量: 256M(8Mx32)
速度: 200MHz
接口: 并联
电源电压: 1.7 V ~ 1.95 V
工作温度: -25°C ~ 85°C
封装/外壳: 90-TFBGA
供应商设备封装: 90-VFBGA(8x13)
包装: 托盘
W948D6FB / W948D2FB
256Mb Mobile LPDDR
6.7.1 SRR Register (A[n:0] = 0)
X
16 15
13 12 11 10
8
7
4
3
0
Rising Edge of DQ Bus
Reserved(0)
Density DT DW
Refresh
Rate
Revision Manufacturer
Identification Identification
SRR Register 0
DQ15 DQ14 DQ13
Density
DQ3
DQ2
DQ1
DQ0
Manufacturer
0
0
0
0
0
1
128
256
1
0
0
0
Winbond
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
1
512
1024
2048
Reserved
Reserved
64
DQ12 Device Type
0
1
LPDDR
Reserved
DQ10
DQ9
DQ8
Refresh Rate
DQ7:4 Revision ID
DQ11
0
1
Device
Width
16 bits
32 bits
1
1
1
1
0
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
x
Reserved
0.25
Reserved
1
Reserved
Reserved
Reserved
(See Note 1)
Note 1 : The manufacture?s revision number
starts at ? 0000 ? and increments by ? 0001 ? each
time a change in the manufacturer?s
specification(AC timings, or feature set), IBIS
(pull up or pull down characteristics), or
process occurs.
Note 2 : The refresh rate mulitiplier is based on the menory?s temperature sensor .
Note 3 : Required average periodic refresh interval = tREFI * multiplier.
Publication Release Date : Oct, 15, 2012
- 17 -
Revision : A01-004
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