參數(shù)資料
型號(hào): AS7C3364PFS36B-200TQIN
廠商: ALLIANCE SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 3.3V 64K X 32/36 pipeline burst synchronous SRAM
中文描述: 64K X 36 STANDARD SRAM, 3 ns, PQFP100
封裝: 14 X 20 MM, LEAD FREE, TQFP-100
文件頁(yè)數(shù): 6/19頁(yè)
文件大小: 548K
代理商: AS7C3364PFS36B-200TQIN
AS7C3364PFS32B
AS7C3364PFS36B
12/10/04; v.1.4
Alliance Semiconductor
P. 6 of 19
Write enable truth table (per byte)
Key:
X = don’t care, L = low, H = high, n = a, b, c, d;
BWE
,
BWn
= internal write signal.
Asynchronous Truth Table
Notes:
1. X means “Don’t Care”
2. ZZ pin is pulled down internally
3. For write cycles that follows read cycles, the output buffers must be disabled with OE, otherwise data bus contention will occur.
4. Snooze mode means power down state of which stand-by current does not depend on cycle times
5. Deselected means power down state of which stand-by current depends on cycle times
Burst sequence table
Function
GWE
BWE
BWa
BWb
BWc
BWd
Write All Bytes
L
X
X
X
X
X
H
L
L
L
L
L
Write Byte a
H
L
L
H
H
H
Write Byte c and d
H
L
H
H
L
L
Read
H
H
X
X
X
X
H
L
H
H
H
H
Operation
ZZ
H
L
L
L
L
OE
X
L
H
X
X
I/O Status
High-Z
Dout
High-Z
Din, High-Z
High-Z
Snooze mode
Read
Write
Deselected
Interleaved burst address (LBO = 1)
A1 A0
0 0
2
nd
Address
0 1
3
rd
Address
1 0
4
th
Address
1 1
Linear burst address (LBO = 0)
A1 A0
0 0
0 1
1 0
1 1
A1 A0
0 1
0 0
1 1
1 0
A1 A0
1 0
1 1
0 0
0 1
A1 A0
1 1
1 0
0 1
0 0
A1 A0
0 1
1 0
1 1
1 0
A1 A0
1 0
1 1
0 0
0 1
A1 A0
1 1
0 0
0 1
1 0
1
st
Address
1
st
Address
2
nd
Address
3
rd
Address
4
th
Address
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