參數(shù)資料
型號: WED9LC6416V1312BI
廠商: MICROSEMI CORP-PMG MICROELECTRONICS
元件分類: 存儲器
英文描述: SPECIALTY MEMORY CIRCUIT, PBGA153
封裝: MO-163, BGA-153
文件頁數(shù): 18/27頁
文件大?。?/td> 334K
代理商: WED9LC6416V1312BI
25
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
White Electronic Designs
WED9LC6416V
FIG. 16 SDRAM MODE REGISTER SDRAM AUTO REFRESH CYCLE
SET CYCLE
*Both banks precharge should be completed before Mode Register Set cycle and Auto refresh cycle.
NOTES:
MODE REGISTER SET CYCLE
1. SDCE, SDRAS, SDCAS & SDWE activation at the same clock cycle with address key will set internal mode register.
2. Minimum 2 clock cycles should be met before new SDRAS activation.
3. Please refer to Mode Register Set Table.
SDRAS
SDCAS
ADDR
BWE
SDCLK
SDCE
Ra
Key
DQ
New Command
New
Command
Auto Refresh
MRS
SDWE
DON’T CARE
tRFC
HI-Z
Note 2
Note 1
Note 3
HIGH
012
3
4
567
8
0
12
34
5
6
78
9
10
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