參數(shù)資料
型號: W9812G21H-6I
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 4M X 32 SYNCHRONOUS DRAM, 5 ns, PDSO86
封裝: 0.400 INCH, ROHS COMPLIANT, TSOP2-86
文件頁數(shù): 30/36頁
文件大?。?/td> 1422K
代理商: W9812G21H-6I
W9812G2IH
Publication Release Date:Nov. 06, 2008
- 36 -
Revision A01
11.15 Auto-precharge Timing (Read Cycle)
Read
AP
0
11
10
9
8
7
6
5
4
3
2
1
Q0
Read
AP
Act
Q1
Read
AP
Act
Q1
Q2
AP
Act
Read
Act
Q0
Q3
(1) CAS Latency=2
Read
Act
AP
When the Auto precharge command is asserted, the period from Bank Activate command to
the start of internal precgarging must be at least tRAS (min).
represents the Read with Auto precharge command.
represents the start of internal precharging.
represents the Bank Activate command.
Note:
tRP
( a ) burst length = 1
Command
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
tRP
Q0
Read
AP
Act
Q0
Read
AP
Act
Q1
Q0
Read
AP
Act
Q1
Q2
Q3
Read
AP
Act
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
(2) CAS Latency=3
tRP
( a ) burst length = 1
Command
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
相關(guān)PDF資料
PDF描述
W9812G21H-6C 4M X 32 SYNCHRONOUS DRAM, 4.5 ns, PDSO86
W9812G6JH-6 8M X 16 SYNCHRONOUS DRAM, 5 ns, PDSO54
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