EFST
F49B002UA
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
register serve as inputs to the internal state
machine. The state machine outputs dictate the
function of the device. The F49B002UA features
various bus operations as Table 2.
Table 2. F49B002UA Operation Modes Selection
ADDRESS
A8
A17 A12
A5
|
DESCRIPTION
DQ0~DQ7
OE
CE
WE
|
|
|
A9
A6
A1 A0
A13 A10
A7
A2
Read
Write
L
L
L
H
L
AIN
AIN
Dout
DIN
H
Output Disable
Standby
L
H
X
H
X
X
X
High Z
High Z
H
Auto-select
See Table 3
Notes:
1. L= Logic Low = VIL, H= Logic High = VIH, X= Don't Care, SA= Sector Address, AIN= Address In, DIN = Data In,
Dout = Data Out.
Table 3. F49B002UA Auto-Select Mode (High Voltage Method)
ADDRESS
A8
DQ0~DQ7
A17
|
A12
|
DESCRIPTION
OE
CE
WE
|
A9
A6 A3 A2 A1 A0
A13
A10
A4
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
VID
VID
VID
VID
VID
X
X
X
X
X
X
X
X
X
X
L
H
H
L
H
L
L
L
L
L
L
L
L
L
L
H
7FH
7FH
7FH
8CH
00H
(Manufacturer ID:EFST)
H
L
(Device ID: F49B002UA)
L
L
Notes :
1.Manufacturer and device codes may also be accessed via the software command sequence in Table 4.
2. VID=11.5V to 12.5V.
Elite Flash Storage Technology Inc.
Publication Date : Sep. 2006
Revision: 1.4 4/33
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
