AS7C33256PFS32A Ver la hoja de datos (PDF) - Alliance Semiconductor
Número de pieza
componentes Descripción
Fabricante
AS7C33256PFS32A Datasheet PDF : 20 Pages
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AS7C33256PFS32A
AS7C33256PFS36A
®
Write enable truth table (per byte)
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
H
H
X
X
X
X
Read
H
L
H
H
H
H
Key: X = don’t care, L = low, H = high, n = a, b, c, d; 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 order table
Interleaved Burst Order (LBO=1)
A1 A0 A1 A0 A1 A0
Starting Address 0 0 0 1 1 0
First increment 0 1 0 0 1 1
Second increment 1 0 1 1 0 0
Third increment 1 1 1 0 0 1
A1 A0
11
10
01
00
Linear Burst Order (LBO=0)
A1 A0 A1 A0 A1 A0
Starting Address 0 0 0 1 1 0
First increment 0 1 1 0 1 1
Second increment 1 0 1 1 0 0
Third increment 1 1 0 0 0 1
A1 A0
11
00
01
10
11/30/04, v.3.1
Alliance Semiconductor
P. 6 of 20
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