AT49F2048-12RI ATMEL [ATMEL Corporation], AT49F2048-12RI Datasheet

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AT49F2048-12RI

Manufacturer Part Number
AT49F2048-12RI
Description
2-Megabit 128K x 16 5-volt Only CMOS Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
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 A.
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
Pin Name
A0 - A16
CE
OE
WE
RESET
I/O0 - I/O15
NC
Single Voltage Operation
Fast Read Access Time - 70 ns
Internal Erase/Program Control
Sector Architecture
Fast Sector Erase Time - 10 seconds
Word-By-Word Programming - 50 s/Word
Hardware Data Protection
DATA Polling For End Of Program Detection
Low Power Dissipation
Typical 10,000 Write Cycles
– 5V Read
– 5V Reprogramming
– 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
– 50 mA Active Current
– 300 A CMOS Standby Current
Function
Addresses
Chip Enable
Output Enable
Write Enable
Reset
Data
Inputs/Outputs
No Connect
TSOP Top View
Type 1
SOIC (SOP)
(continued)
2-Megabit
(128K x 16)
5-volt Only
CMOS Flash
Memory
AT49F2048
0568D-A–9/97
1

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AT49F2048-12RI Summary of contents

Page 1

... 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 with power dissipation of just 275 mW. When deselected, the CMOS standby current is less than 300 A. ...

Page 2

... EPROM; it has standard CE, OE, and WE inputs to avoid bus connection. The AT49F2048 is a 5-volt- only, 2 megabit Flash Memory organized as 128K words contention. Reprogramming the AT49F2048 is performed by first erasing a block of data and then programming on a word-by-word basis. The device is erased by executing the erase command sequence ...

Page 3

... DATA polling may begin at any time during the program cycle. TOGGLE BIT: In addition to DATA polling the AT49F2048 provides another method for determining the end of a pro- gram or erase cycle. During a program or erase operation, successive attempts to read data from the device will result in I/O6 toggling between one and zero ...

Page 4

... All Input Voltages (including NC Pins) with Respect to Ground ...................................-0.6V to +6.25V All Output Voltages with Respect to Ground ............................ -0. Voltage on OE with Respect to Ground ...................................-0.6V to +13.5V AT49F2048 4 power low, CE high or WE high inhibits program cycles. (d) Noise CC sense level, the filter: pulses of less than 15 ns (typical) on the inputs will not initiate a program cycle ...

Page 5

... Condition MHz; I OUT -400 -100 AT49F2048-90 AT49F2048-12 0°C - 70°C -40°C - 85°C 5V 10 OUT High Z High Z X High Z ( Manufacturer Code ( ...

Page 6

... ACC HIGH after the address transition without impact on t ACC after the falling edge of CE without impact ACC Max Units 6 12 AT49F2048-90 AT49F2048-12 Max Min Max Min ...

Page 7

AC Word Load Characteristics Symbol Parameter Address, OE Set-up Time AS OES t Address Hold Time AH t Chip Select Set-up Time CS t Chip Select Hold Time CH t Write Pulse Width (WE or CE) WP ...

Page 8

... OE must be high only when WE and CE are both low. 2. For chip erase, the address should be 5555. For sector erase, the address depends on what sector erased. (See note 4 under command definitions.) 3. For chip erase, the data should be 10 AT49F2048 8 PROGRAM CYCLE ...

Page 9

Data Polling Characteristics Symbol Parameter t Data Hold Time Hold Time OEH ( Output Delay OE t Write Recovery Time WR Notes: 1. These parameters are characterized and not 100% tested. 2. See t ...

Page 10

... The device does not remain in identification mode if powered down. 4. The device returns to standard operation mode. 5. Manufacturer Code: 1FH Device Code: 82H 6. Either one of the Product ID Exit commands can be used. AT49F2048 10 Boot Block Lockout Enable Algorithm LOAD DATA F0 TO ANY ADDRESS Notes: 1. EXIT PRODUCT ...

Page 11

... Wide, Plastic Gull-Wing Small Outline Package (SOIC/SOP) 48T 48-Lead, Thin Small Outline Package (TSOP) 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 Type Package Operation Range 44R Commercial 48T ( 44R Industrial 48T (- 44R ...

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