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PDF AT49LV1024A Data sheet ( Hoja de datos )
| Número de pieza | AT49LV1024A | |
| Descripción | (AT49LV1024A / AT49BV1024A) 1-megabit (64K x 16) 3-volt Only Flash Memory | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Single-voltage Operation Read/Write Operation: 2.7V to 3.6V (BV). 3.0V to 3.6V(LV)
• Fast Read Access Time – 45 ns
• Internal Program Control and Timer
• 8K Word Boot Block with Lockout
• Fast Erase Cycle Time – 1.5 Seconds
• Word-by-word Programming – 20 µs/Word Typical
• Hardware Data Protection
• Data Polling for End of Program Detection
• Small 10 x 14 mm VSOP Package
• Typical 10,000 Write Cycles
Description
The AT49BV/LV1024A is a 3-volt only in-system Flash memory. The 1-megabit of
memory is organized as 65,536 words by 16 bits. Manufactured with Atmel’s
advanced nonvolatile CMOS technology, the devices offer access times to 45 ns with
power dissipation of just 72 mW over the industrial temperature range.
To allow for simple in-system reprogrammability, the AT49BV/LV1024A does not
require high input voltages for programming. Three-volt-only commands determine the
read and programming operation of the device. Reading data out of the device is simi-
lar to reading from an EPROM. Reprogramming the AT49BV/LV1024A is performed
by erasing a block of data (entire chip or main memory block) and then programming
on a word by word basis. The typical word programming time is a fast 20 µs. The end
of a program cycle can be optionally detected by the Data Polling feature. Once the
end of a word program cycle has been detected, a new access for a read or program
can begin. The typical number of program and erase cycles is in excess of 10,000
cycles.
The optional 8K word boot block section includes a reprogramming write lock out fea-
ture to provide data integrity. The boot sector is designed to contain user secure code,
and when the feature is enabled, the boot sector is permanently protected from being
erased or reprogrammed.
1-megabit
(64K x 16)
3-volt Only
Flash Memory
AT49BV1024A
AT49LV1024A
Pin Configurations
Pin Name
A0 - A15
CE
OE
WE
I/O0 - I/O15
NC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
AT49BV/LV1024A VSOP Top View
Type 1
10 x 14 mm
A9
A10
A11
A12
A13
A14
A15
NC
WE
VCC
NC
CE
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 GND
39 A8
38 A7
37 A6
36 A5
35 A4
34 A3
33 A2
32 A1
31 A0
30 OE
29 I/O0
28 I/O1
27 I/O2
26 I/O3
25 I/O4
24 I/O5
23 I/O6
22 I/O7
21 GND
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Rev. 3332B–FLASH–12/03
1
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AT49BV/LV1024A
DC and AC Operating Range
Operating
Temperature (Case)
VCC Power Supply
Ind.
AT49LV1024A-45
-40° C - 85° C
3.0V to 3.6V
Operating Modes
Mode
CE OE WE
Ai
Read
Program(2)
Standby/Write Inhibit
Program Inhibit
Program Inhibit
Output Disable
Product Identification
VIL VIL VIH
VIL VIH VIL
VIH X(1)
X
X X VIH
X VIL X
X VIH X
Ai
Ai
X
Hardware
VIL VIL VIH
A1 - A15 = VIL, A9 = VH(3), A0 = VIL
A1 - A15 = VIL, A9 = VH(3), A0 = VIH
Software(5)
A0 = VIL, A1 - A15 = VIL
A0 = VIH, A1 - A15 = VIL
Notes: 1. X can be VIL or VIH.
2. Refer to AC Programming Waveforms.
3. VH = 12.0V ± 0.5V.
4. Manufacturer Code: 001FH; Device Code: 0087H.
5. See details under “Software Product Identification Entry/Exit” on page 11.
DC Characteristics
Symbol Parameter
Condition
ILI
ILO
ISB1
ISB2
ICC(1)
VIL
VIH
VOL
VOH1
Note:
Input Load Current
Output Leakage Current
VCC Standby Current CMOS
VCC Standby Current TTL
VCC Active Current
Input Low Voltage
VIN = 0V to VCC
VI/O = 0V to VCC
CE = VCC - 0.3V to VCC
CE = 2.0V to VCC
f = 5 MHz; IOUT = 0 mA
Input High Voltage
Output Low Voltage
IOL = 2.1 mA
Output High Voltage
IOH = -400 µA
1. In the erase mode, ICC is 40 mA.
Min Max
10.0
10.0
50.0
0.5
20.0
0.6
2.0
0.45
2.4
I/O
DOUT
DIN
High-Z
High-Z
Manufacturer Code(4)
Device Code(4)
Manufacturer Code(4)
Device Code(4)
Units
µA
µA
µA
mA
mA
V
V
V
V
3332B–FLASH–12/03
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AT49BV/LV1024A
Software Product Identification Entry(1)
LOAD DATA AA
TO
ADDRESS 555
Boot Block Lockout Enable Algorithm(1)
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 90
TO
ADDRESS 555
ENTER PRODUCT
IDENTIFICATION
MODE(2)(3)(5)
Software Product Identification Exit(1)
LOAD DATA AA
TO
ADDRESS 555
OR
LOAD DATA F0
TO
ANY ADDRESS
LOAD DATA 55
TO
ADDRESS AAA
EXIT PRODUCT
IDENTIFICATION
MODE(4)
LOAD DATA F0
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 80
TO
ADDRESS 555
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 40
TO
ADDRESS 555
PAUSE 1 Second(2)
Notes:
1. Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex);
Address Format: A11 - A0 (Hex); A11 - A15 (Don’t Care).
2. Boot Block Lockout feature enabled.
Notes:
EXIT PRODUCT
IDENTIFICATION
MODE(4)
1. Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex);
Address Format: A11 - A0 (Hex); A11 - A15 (Don’t Care).
2. A1 - A15 = VIL.
Manufacturer Code is read for A0 = VIL;
Device Code is read for A0 = VIH.
3. The device does not remain in identification mode if powered
down.
4. The device returns to standard operation mode.
5. Manufacturer Code: 001FH
Device Code: 0087H
3332B–FLASH–12/03
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| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AT49LV1024A.PDF ] | |
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