AT29LV020-20 ATMEL [ATMEL Corporation], AT29LV020-20 Datasheet - Page 4

• Manufacturer Part Number: AT29LV020-20
• Description: 2 Megabit 256K x 8 3-volt Only CMOS Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Device Operation (Continued)
BOOT BLOCK LOCKOUT DETECTION: A software
method is available to determine whether programming of
either boot block section is locked out. See Software Prod-
uct Identification Entry and Exit sections. When the device
is in the software product identification mode, a read from
location 00002H will show if programming the lower ad-
dress boot block is locked out while reading location
DC and AC Operating Range
1. After power is applied and V
Operating Modes
Notes: 1. X can be V
DC Characteristics
4-76
I
I
I
I
I
V
V
V
V
Operating
Temperature (Case)
V
Mode
Read
Program
Standby/Write Inhibit
Program Inhibit
Program Inhibit
Output Disable
Product Identification
Symbol
LI
LO
SB1
SB2
CC
mode is started.
IL
IH
OL
OH
CC
Hardware
Software
Power Supply
2. Refer to AC Programming Waveforms.
3. V
(2)
H
= 12.0V
Input Load Current
Output Leakage Current
V
V
V
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
(5)
CC
CC
CC
Parameter
Active Current
Standby Current CMOS
Standby Current TTL
IL
(1)
or V
AT29LV020
0.5V.
IH
Com.
Ind.
.
CC
is at the minimum specified data sheet value, the system should wait 20 ms before an operational
V
CE
V
V
V
X
X
X
IH
IL
IL
IL
X
V
VIL
OE
V
V
V
X
IH
IH
IL
(1)
IL
Condition
V
V
CE = V
CE = 2.0V to V
f = 5 MHz; I
I
I
OL
OH
AT29LV020-20
IN
I/O
-40 C - 85 C
3.3V
= 1.6 mA; V
0 C - 70 C
= 0V to V
= -100 A; V
= 0V to V
CC
WE
V
V
V
V
X
X
X
IH
IH
IH
- 0.3V to V
0.3V
IL
OUT
4. Manufacturer Code: 1F, Device Code: BA.
5. See details under Software Product Identification Entry/Exit.
CC
CC
FFFF2H will do so for the upper boot block. If the data is
FE, the corresponding block can be programmed; if the
data is FF, the program lockout feature has been activated
and the corresponding block cannot be programmed. The
software product identification exit mode should be used
to return to standard operation.
CC
CC
= 0 mA; V
CC
A1 - A17 = V
A1 - A17 = V
= 3.0V
= 3.0V
CC
CC
A0 = V
A0 = V
A0 = V
A0 = V
Com.
Ind.
= 3.6V
Ai
Ai
Ai
X
IL
IL
, A9 = V
, A9 = V
IH
IH
IL
IL
H
H
(3)
(3)
Min
,
,
2.0
2.4
AT29LV020-25
-40 C - 85 C
3.3V
0 C - 70 C
I/O
D
D
High Z
High Z
Manufacturer Code
Device Code
Manufacturer Code
Device Code
OUT
IN
0.3V
Max
0.6
.45
20
50
15
1
1
1
(4)
(4)
Units
mA
mA
V
V
V
V
A
A
A
A
(4)
(4)