参数资料
型号: W949D2CBJX5E
厂商: WINBOND ELECTRONICS CORP
元件分类: DRAM
英文描述: 16M X 32 DDR DRAM, 5 ns, PBGA90
封装: 8 X 13 MM, 0.80 MM PITCH, HALOGEN FREE AND LEAD FREE, VFBGA-90
文件页数: 10/60页
文件大小: 1160K
代理商: W949D2CBJX5E
W949D6CB / W949D2CB
512Mb Mobile LPDDR
Publication Release Date: Jun, 14, 2011
- 18 -
Revision A01-006
6.7.2 Status Register Read Timing Diagram
CMD
NOP
MRS
READ
CL=3
0
0 1
tRP
tSRR
tSRC
DQ:Reg out
=Don’t Care
PCHA, or PCH
CK
Command
BA1,BA0
An~A0
DQS
DQ
Notes :
1.SRR can only be issued after power-up sequence is complete.
2.SRR can only be issued with all banks precharged.
3.SRR CL is unchanged from value in the mode register.
4.SRR BL is fixed at 2.
5.tSRR = 2 (min).
6.tSRC = CL + 1; (min time between read to next valid command)
7.No commands other than NOP and DES are allowed between the SRR and the READ.
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