参数资料
型号: W948D2FBJX5E
厂商: Winbond Electronics
文件页数: 30/60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
7.5.5 Consecutive Read Bursts
CK
CK
Command
READ
NOP
READ
NOP
NOP
NOP
Address
BA,Coln
BA,Colb
CL=2
DQS
DQ
DO n
DO b
CL=3
DQS
DQ
1) DO n (or b)=Data Out from column n (or column b)
DO n
DO b
= Don't Care
2) Burst Length=4,8 or 16 (if 4, the bursts are concatenated; if 8 or 16, the second burst interrupts the first)
3) Read bursts are to an active row in the bank
4) Shown with nominal tAC, tDQSCK and tDQSQ
7.5.6 Non-Consecutive Read Bursts
A READ command can be initiated on any clock cycle following a previous READ command. Non-consecutive
Reads are shown in following figure.
CK
CK
Command
READ
NOP
NOP
READ
NOP
NOP
Address
BA,Col n
BA,Col b
CL=2
DQS
DQ
DO n
DO b
CL=3
DQS
DQ
1) DO n (or b) =Data Out from column n (or column b)
DO n
= Don't Care
2) BA,Col n (or b) =Bank A,Column n (or column b)
3) Burst Length=4; 3 subsequent elements of Data Out appear in the programmed order following DO n (or b)
4) Shown with nominal tAC, tDQSCK and tDQSQ
Publication Release Date : Oct, 15, 2012
- 30 -
Revision : A01-004
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