at49bv002an ATMEL Corporation, at49bv002an Datasheet

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at49bv002an

Manufacturer Part Number
at49bv002an
Description
2-megabit 256k X 8 Single 2.7-volt Battery-voltage Flash Memory
Manufacturer
ATMEL Corporation
Datasheet

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Features
1. Description
The AT49BV002A(N)(T) is a 2.7-volt-only in-system reprogrammable Flash Memory.
Its 2 megabits of memory is organized as 262,144 words by 8 bits. Manufactured with
Atmel’s advanced nonvolatile CMOS technology, the device offers access times to
70 ns with power dissipation of just 54 mW over the industrial temperature range.
When the device is deselected, the CMOS standby current is less than 50 µA. For the
AT49BV002AN(T) pin 1 for PLCC package and pin 9 for the TSOP package are no
c o n n e c t p i n s . T o a l l o w f o r s i m p l e i n - s y s t e m r e p r o g r a m m a b i l i t y , t h e
AT49BV002A(N)(T) does not require high input voltages for programming. Five-volt-
only commands determine the read and programming operation of the device. Read-
ing data out of the device is similar to reading from an EPROM; it has standard CE,
OE, and WE inputs to avoid bus contention. Reprogramming the AT49BV002A(N)(T)
is performed by erasing a block of data and then programming on a byte by byte
basis. The byte programming time is a fast 30 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 num-
ber of program and erase cycles is in excess of 10,000 cycles.
The device is erased by executing the erase command sequence; the device inter-
nally controls the erase operations. There are two 8K byte parameter block sections,
four main memory blocks, and one boot block.
The device has the capability to protect the data in the boot block; this feature is
enabled by a command sequence. The 16K-byte boot block section includes a repro-
gramming lock out feature to provide data integrity. The boot sector is designed to
contain user secure code, and when the feature is enabled, the boot sector is pro-
tected from being reprogrammed.
In the AT49BV002AN(T), once the boot block programming lockout feature is
enabled, the contents of the boot block are permanent and cannot be changed. In the
AT49BV002A(T), once the boot block programming lockout feature is enabled, the
contents of the boot block cannot be changed with input voltage levels of 5.5 volts or
less.
Single Supply for Read and Write: 2.7 to 3.6V
Fast Read Access Time – 70 ns
Internal Program Control and Timer
Sector Architecture
Fast Erase Cycle Time – 4 Seconds
Byte-by-Byte Programming – 30 µs/Byte Typical
Hardware Data Protection
DATA Polling for End of Program Detection
Low Power Dissipation
Typical 10,000 Write Cycles
Green (Pb/Halide-free) Packaging Option
– One 16K Bytes Boot Block with Programming Lockout
– Two 8K Bytes Parameter Blocks
– Four Main Memory Blocks (One 32K Bytes, Three 64K Bytes)
– 15 mA Active Current
– 50 µA CMOS Standby Current
2-megabit
(256K x 8)
Single 2.7-volt
Battery-Voltage
Flash Memory
AT49BV002A
AT49BV002AN
AT49BV002AT
AT49BV002ANT
3353G–FLASH–8/05

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at49bv002an Summary of contents

Page 1

... When the device is deselected, the CMOS standby current is less than 50 µA. For the AT49BV002AN(T) pin 1 for PLCC package and pin 9 for the TSOP package are AT49BV002A(N)(T) does not require high input voltages for programming ...

Page 2

... I/O0 13 A11 A13 4 A14 5 A17 VCC 8 *RESET 9 A16 10 A15 11 A12 *This pin the AT49BV002AN(T). 29 A14 28 A13 A11 A10 I/ A10 I/O7 28 I/O6 27 I/O5 26 I/O4 I/ GND 23 I/O2 ...

Page 3

... Read The AT49BV002A(N)(T) is accessed like an EPROM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on the out- puts. The outputs are put in the high impedance state whenever high. This dual-line control gives designers flexibility in preventing bus contention ...

Page 4

... RESET pin, the boot block array can be reprogrammed even if the boot block lockout feature has been enabled (see page 5). The RESET feature is not available on the AT49BV002AN(T). 4.4 Erasure Before a byte can be reprogrammed, the main memory blocks or parameter blocks which con- tains the byte must be erased. The erased state of the memory bits is a logical “ ...

Page 5

... The user can override the boot block programming lockout by taking the RESET pin to 12 volts during the entire chip erase, sector erase or byte programming operation. When the RESET pin is brought back to TTL levels the boot block programming lockout feature is again active. This feature is not available on the AT49BV002AN(T). 4.7 Product Identification The product identification mode identifies the device and manufacturer as Atmel ...

Page 6

DATA Polling The AT49BV002A(N)(T) features DATA polling to indicate the end of a program cycle. During a program cycle an attempted read of the last byte loaded will result in the complement of the loaded data on I/O7. Once ...

Page 7

... SA = 3A000 to 3BFFF for PARAMETER BLOCK 38000 to 39FFF for PARAMETER BLOCK 30000 to 37FFF for MAIN MEMORY ARRAY BLOCK 20000 to 2FFFF for MAIN MEMORY ARRAY BLOCK 10000 to 1FFFF for MAIN MEMORY ARRAY BLOCK 00000 to 0FFFF for MAIN MEMORY ARRAY BLOCK 4 6. Absolute Maximum Ratings* Temperature Under Bias................................ -55° ...

Page 8

... Refer to AC Programming Waveforms. = 12.0V ± 0.5V Manufacturer Code: 1FH, Device Code: 07H - AT49BV002A(N), 08H - AT49BV002A(N)T 5. See details under “Software Product Identification 6. This pin is not available on the AT49BV002AN(T Characteristics Symbol Parameter I Input Load Current LI I Output Leakage Current LO ...

Page 9

AC Read Characteristics Symbol Parameter t Address to Output Delay ACC ( Output Delay CE ( Output Delay OE (3)( Output Float DF Output Hold from OE, CE ...

Page 10

Input Test Waveform and Measurement Level DRIVING LEVELS < 13. Output Load Test 14. Pin Capacitance ( MHz 25°C Symbol Typ OUT ...

Page 11

AC Byte 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) ...

Page 12

Program Cycle Characteristics Symbol Parameter t Byte Programming Time BP t Address Set-up Time AS t Address Hold Time AH t Data Set-up Time DS t Data Hold Time DH t Write Pulse Width WP t Write Pulse Width ...

Page 13

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 ...

Page 14

Software Product Identification (1) Entry LOAD DATA AA TO ADDRESS 555 LOAD DATA 55 TO ADDRESS AAA LOAD DATA 90 TO ADDRESS 555 ENTER PRODUCT IDENTIFICATION (2)(3)(5) MODE 25. Software Product Identification (1) Exit OR LOAD DATA AA TO ...

Page 15

... AT49BV002AT-70JI 32J AT49BV002AT-70TI 32T AT49BV002AT-70VI 32V AT49BV002ANT-70JI 32J AT49BV002ANT-70TI 32T AT49BV002ANT-70VI 32V Ordering Code Package AT49BV002AN-70JU 32J AT49BV002AN-70TU 32T AT49BV002AN-70VU 32V AT49BV002ANT-70JU 32J AT49BV002ANT-70TU 32T Package Type AT49BV002A(N)(T) Operation Range Industrial (-40° to 85°C) Industrial (-40° to 85°C) Industrial (-40° to 85°C) Industrial (-40° ...

Page 16

Packaging Information 28.1 32J – PLCC 1.14(0.045) X 45˚ 0.51(0.020)MAX 45˚ MAX (3X) Notes: 1. This package conforms to JEDEC reference MS-016, Variation AE. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is ...

Page 17

TSOP Pin 1 Identifier e E Notes: 1. This package conforms to JEDEC reference MO-142, Variation BD. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion 0.15 mm per side and ...

Page 18

VSOP Pin 1 Identifier e E Notes: 1. This package conforms to JEDEC reference MO-142, Variation BA. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion 0.15 mm per side and ...

Page 19

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life © Atmel Corporation 2005. All rights reserved. Atmel registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...

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