AS7C33512PFS18A Ver la hoja de datos (PDF) - Alliance Semiconductor
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AS7C33512PFS18A Datasheet PDF : 20 Pages
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AS7C33512PFS18A
®
Write enable truth table (per byte)
Function
GWE BWE BWa BWb
Write All Bytes
L
X
X
X
H
L
L
L
Write Byte a
H
L
L
H
Write Byte b
H
L
H
L
Read
H
H
X
X
H
L
H
H
Key: X = don’t care, L = low, H = high, n = a, b; BWE, BWn = internal write signal.
Asynchronous Truth Table
Operation
Snooze mode
Read
Write
Deselected
ZZ
OE
I/O Status
H
X
High-Z
L
L
Dout
L
H
High-Z
L
X
Din, High-Z
L
X
High-Z
Burst sequence table
Interleaved burst address (LBO = 1)
A1 A0 A1 A0 A1 A0
Starting Address
00
01
10
First Increment
01
00
11
Second Increment
10
11
00
Third Increment
11
10
01
A1 A0
11
10
01
00
Linear burst address (LBO = 0)
A1 A0 A1 A0 A1 A0
Starting Address
00
01
10
First Increment
01
10
11
Second Increment
10
11
00
Third Increment
11
10
01
A1 A0
11
00
01
10
11/30/04; v.2.2
Alliance Semiconductor
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