参数资料
型号: W989D6CBGX7E
厂商: WINBOND ELECTRONICS CORP
元件分类: DRAM
英文描述: 32M X 16 DDR DRAM, 5.4 ns, PBGA54
封装: 8 X 9 MM, 0.80 MM PITCH, HALOGEN FREE AND LEAD FREE, VFBGA-54
文件页数: 57/67页
文件大小: 1469K
代理商: W989D6CBGX7E
W989D6CB / W989D2CB
512Mb Mobile LPSDR
Publication Release Date: Jun, 27, 2011
- 60 -
Revision A01-004
10.21 Timing Chart for Burst Stop Cycle (Burst Stop Command)
Read
BST
0
11
10
9
8
7
6
5
4
3
2
1
DQ
Q0
Q1
Q2
Q3
BST
( a ) CAS latency =2
Command
( b )CAS latency = 3
(1) Read cycle
Q4
(2) Write cycle
Command
Read
Command
Q0
Q1
Q2
Q3
Q4
Q0
Q1
Q2
Q3
Q4
DQ
Write
BST
Note:
represents the Burst stop command
“Dn” = Write data, and “Qn” = Read data
BST
10.22 Timing Chart for Burst Stop Cycle (Precharge Command)
0
1
11
10
9
8
7
6
5
4
3
2
(1) Read cycle
(a) CAS latency =2
Command
Q0
Q1
Q2
Q3
Q4
PRCG
Read
(b) CAS latency =3
Command
Q0
Q1
Q2
Q3
Q4
PRCG
Read
DQ
(2) Write cycle
(a) CAS latency =2
Command
Q0
Q1
Q2
Q3
Q4
PRCG
Write
(b) CAS latency =3
Command
Q0
Q1
Q2
Q3
Q4
Write
DQ
DQM
PRCG
tWR
Note:
represents the Precharge command.
“Dn” = Write data, and “Qn” = Read data.
PRCG
In the case of urst
Length = 8
Write DQM Latency = 0
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