ESMT
7. FUNCTIONAL DESCRIPTION
7.1 Device operation
This section describes the requirements and use
of the device bus operations, which are initiated
through the internal command register. The
register is composed of latches that store the
command, address and data information needed
to execute the command. The contents of the
F49L160UA/F49L160BA
register serve as inputs to the internal state
machine. The state machine outputs dictate the
function of the device. The F49L160UA
/F49L160BA features various bus operations as
Table 3.
Table 3. F49L160UA/F49L160BA Operation Modes Selection
ADDRESS
DESCRIPTION
CE
OE
DQ8~DQ15
WE
RESET
A19 A11
A8
A5
DQ0~DQ7
|
|
|
|
A9
A6
A1 A0
A12 A10
A7
A2
BYTE
=V
IH
BYTE
=V
IL
Reset(3)
Read
Write
Output Disable
Standby
Sector Protect(2)
Sector Unprotect(2)
Temporary sector unprotect
X
L
L
L
V
CC
±
0.3V
L
L
X
X
L
H
H
X
H
H
X
X
H
L
H
X
L
L
X
L, Vss±
0.3V(3)
H
H
H
V
CC
±
0.3V
V
ID
V
ID
V
ID
SA
SA
X
X
X
X
X
X
X
AIN
AIN
X
X
L
H
X
X
H
H
L
L
High Z
Dout
DIN
High Z
High Z
DIN
DIN
DIN
High Z
Dout
DIN
High Z
High Z
X
X
DIN
High Z
DQ8~DQ14=
High Z
DQ15=A-1
High Z
High Z
X
X
High Z
AIN
See Table 4
Auto-select
Notes:
1.
L= Logic Low = V
IL
, H= Logic High = V
IH
, X= Don't Care, SA= Sector Address, V
ID
=10V to 10.5V.
AIN= Address In, DIN = Data In, Dout = Data Out.
2. The sector protect and unprotect functions may also be implemented via programming equipment.
3. See “Reset Mode” section.
Elite Semiconductor Memory Technology Inc.
Publication Date : Dec. 2006
Revision: 1.3
6/51
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
