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PDF AT49F1024A Data sheet ( Hoja de datos )
| Número de pieza | AT49F1024A | |
| Descripción | FLASH MEMORY | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Single-voltage Operation
– 5V Read
– 5V Reprogramming
• 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 – 10 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 AT49F1024A is a 5-volt-only in-system Flash memory 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 275 mW over the
commercial temperature range. When the device is deselected, the CMOS standby
current is less than 100 µA.
To allow for simple in-system reprogrammability, the AT49F1024A does not require
high-input voltages for programming. Five-volt-only commands determine the read
and programming operation of the device. Reading data out of the device is similar to
reading from an EPROM. Reprogramming the AT49F1024A 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 10 µs. The end of a program
cycle can be optionally detected by the Data Polling feature. Once the end of a byte
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.
1-megabit
(64K x 16)
5-volt Only
Flash Memory
AT49F1024A
Pin Configurations
Pin Name Function
A0 - A15
Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O15 Data Inputs/Outputs
NC No Connect
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
3415B–FLASH–12/03
1 page  
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AT49F1024A
DC and AC Operating Range
Operating Temperature (Case)
VCC Power Supply
Com.
AT49F1024A-45
0°C - 70°C
5V ± 10%
Operating Modes
Mode
CE OE WE
Ai
Read
Program(2)
Standby/Write Inhibit
VIL VIL VIH
VIL VIH VIL
VIH X(1) X
Ai
Ai
X
Program Inhibit
X X VIH
Program Inhibit
X VIL X
Output Disable
X VIH X
Product Identification
Hardware
A1 - A15 = VIL, A9 = VH(3), A0 = VIL
VIL VIL VIH 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.
I/O
DOUT
DIN
High-Z
High-Z
Manufacturer Code(4)
Device Code(4)
Manufacturer Code(4)
Device Code(4)
DC Characteristics
Symbol
Parameter
ILI
ILO
ISB1
ISB2
ICC (1)
VIL
VIH
VOL
VOH1
VOH2
Note:
Input Load Current
Output Leakage Current
VCC Standby Current CMOS
VCC Standby Current TTL
VCC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Output High Voltage CMOS
1. In the erase mode, ICC is 90 mA.
Condition
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
IOL = 2.1 mA
IOH = -400 µA
IOH = -100 µA; VCC = 4.5V
Min Max
Units
10.0 µA
10.0 µA
100.0
µA
1.0 mA
50.0 mA
0.8 V
2.0 V
0.45 V
2.4 V
4.2 V
3415B–FLASH–12/03
5
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AT49F1024A
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
LOAD DATA 80
TO
ADDRESS 555
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 40
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA F0
TO
ADDRESS 555
EXIT PRODUCT
IDENTIFICATION
MODE(4)
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.
EXIT PRODUCT
IDENTIFICATION
MODE(4)
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. 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
3415B–FLASH–12/03
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AT49F1024A.PDF ] | |
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