參數(shù)資料
型號： V55C2256164VGLK-10H
廠商： PROMOS TECHNOLOGIES INC
元件分類： DRAM
英文描述： SYNCHRONOUS DRAM, PBGA54
封裝： 8 X 10 MM, GREEN, MO-210, FBGA-54
文件頁數(shù)： 47/47頁
文件大小： 581K
代理商： V55C2256164VGLK-10H
9
V55C2256164VG Rev. 1.0 September 2008
ProMOS TECHNOLOGIES
V55C2256164VG
A11
A3
A4
A2
A1
A0
A10 A9
A8
A7
A6
A5
Address Bus (Ax)
_**
PASR
Mode Register
all have to be set to "0"
A12
BA0
Partial-Array Self Refresh:
A2
A1
A0
banks to be self-refreshed
0
all banks
0
1
1/2 array (BA1=0)
0
1
0
1/4 array (BA1=0, BA0=0)
01
1
Reserved
10
0
Reserved
1
0
1
1/8 array (BA1=BA0=0,
RA11=0)
1
0
1/16 array (BA1=BA0=0,
RA11=RA10=0)
11
1
Reserved
*)BA1 and BA0 must be 1, 0 to select the Extended Mode Register (Vs. the Mode Register)
The Extended Mode Register can be set during the initialization sequence. Once the device is operational, the
Extended Mode Register set can be issued anytime when the part is idle.
BA1
1*)
0*)
Drive Strength
A6
A5
Drive Strength
00
01
10
1
Full
1/2
1/4
1/8
DS
Extended Mode Register Table
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