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PDF AT49F2048 Data sheet ( Hoja de datos )
| Número de pieza | AT49F2048 | |
| Descripción | 2-Megabit 5-volt Only CMOS Flash Memory | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Single Voltage Operation
– 5V Read
– 5V Reprogramming
• Fast Read Access Time - 70 ns
• Internal Erase/Program Control
• Sector Architecture
– One 8K Words (16K bytes) Boot Block with Programming Lockout
– Two 8K Words (16K bytes) Parameter Blocks
– One 104K Words (208K bytes) Main Memory Array Block
• Fast Sector Erase Time - 10 seconds
• Word-By-Word Programming - 50 µs/Word
• Hardware Data Protection
• DATA Polling For End Of Program Detection
• Low Power Dissipation
– 50 mA Active Current
– 300 µA CMOS Standby Current
• Typical 10,000 Write Cycles
Description
The AT49F2048 is a 5-volt-only, 2 megabit Flash Memory organized as 128K words
of 16 bits each. Manufactured with Atmel's advanced nonvolatile CMOS technology,
the device offers access times to 70 ns with power dissipation of just 275 mW. When
deselected, the CMOS standby current is less than 300 µA.
To allow for simple in-system reprogrammability, the AT49F2048 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
Pin Configurations
(continued)
Pin Name
Function
A0 - A16
Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
RESET
I/O0 - I/O15
NC
Reset
Data
Inputs/Outputs
No Connect
SOIC (SOP)
TSOP Top View
Type 1
2-Megabit
(128K x 16)
5-volt Only
CMOS Flash
Memory
AT49F2048
0568D-A–9/97
1
1 page  
AT49F2048
DC and AC Operating Range
Operating
Temperature (Case)
VCC Power Supply
Com.
Ind.
AT49F2048-70
0°C - 70°C
-40°C - 85°C
5V ± 10%
AT49F2048-90
0°C - 70°C
-40°C - 85°C
5V ± 10%
Operating Modes
Mode
CE OE WE RESET
Ai
Read
Program/Erase(2)
Standby/Write Inhibit
Program Inhibit
Program Inhibit
Output Disable
Reset
Product Identification
Hardware
VIL VIL VIH
VIL VIH VIL
VIH X (1) X
X X VIH
X VIL X
X VIH X
XX X
VIH
VIH
VIH
VIH
VIH
VIH
VIL
VIL VIL VIH
VIH
Software(5)
VIH
Notes:
1. X can be VIL or VIH.
2. Refer to AC Programming Waveforms.
3. VH = 12.0V ± 0.5V.
4. Manufacturer Code: 1FH, Device Code: 82H
5. See details under Software Product Identification Entry/Exit.
Ai
Ai
X
X
A1 - A16 = VIL, A9 = VH,(3)
A0 = VIL
A1 - A16 = VIL, A9 = VH,(3)
A0 = VIH
A0 = VIL, A1 - A16 = VIL
A0 = VIH, A1 - A16 = VIL
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
AT49F2048-12
0°C - 70°C
-40°C - 85°C
5V ± 10%
I/O
DOUT
DIN
High Z
High Z
High Z
Manufacturer Code(4)
Device Code(4)
Manufacturer Code(4)
Device Code(4)
Min Max Units
10 µA
10 µA
300 µA
3 mA
50 mA
0.8 V
2.0 V
.45 V
2.4 V
4.2 V
5
5 Page 
AT49F2048
Ordering Information(1)
tACC
ICC (mA)
(ns) Active
70 50
50
90 50
50
120 50
50
Standby
0.3
0.3
0.3
0.3
0.3
0.3
Ordering Code
AT49F2048-70RC
AT49F2048-70TC
AT49F2048-70RI
AT49F2048-70TI
AT49F2048-90RC
AT49F2048-90TC
AT49F2048-90RI
AT49F2048-90TI
AT49F2048-12RC
AT49F2048-12TC
AT49F2048-12RI
AT49F2048-12TI
Package
44R
48T
44R
48T
44R
48T
44R
48T
44R
48T
44R
48T
Operation Range
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Note:
1. The AT49F2048 has as optional boot block feature. The part number shown in the Ordering Information table is for devices
with the boot block in the lower address range (i.e., 00000H to 01FFFH). Users requiring the boot block to be in the higher
address range should contact Atmel.
Package Type
44R 44-Lead, 0.525" Wide, Plastic Gull-Wing Small Outline Package (SOIC/SOP)
48T 48-Lead, Thin Small Outline Package (TSOP)
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AT49F2048.PDF ] | |
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