at49bv4096a ATMEL Corporation, at49bv4096a Datasheet

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at49bv4096a

Manufacturer Part Number
at49bv4096a
Description
4-megabit 512k X 8/ 256k X 16 Single 2.7-volt Battery-voltage? Flash Memory
Manufacturer
ATMEL Corporation
Datasheet

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Features
Description
The AT49BV/LV4096A is a 3-volt, 4-megabit Flash memory organized as 524,288
words of 8 bits each or 256K 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 67 mV at 2.7V read. When deselected, the CMOS standby
current is less than 50 µA.
The device contains a user-enabled “boot block” protection feature. The
AT49BV/LV4096A locates the boot block at lowest order addresses (“bottom boot”).
To allow for simple in-system reprogrammability, the AT49BV/LV4096A does not
require high input voltages for programming. Reading data out of the device is similar
to reading from an EPROM; it has standard CE, OE and WE inputs to avoid bus con-
tention. Reprogramming the AT49BV/LV4096A is performed by first erasing a block of
data and then programming on a byte-by-byte or word-by-word basis.
Pin Configurations
Pin Name
A0 - A17
CE
OE
WE
RESET
VPP
I/O0 - I/O15
I/O15(A-1)
BYTE
NC
Single-voltage Read/Write Operation: 2.7V to 3.6V (BV), 3.0V to 3.6V (LV)
Fast Read Access Time – 70 ns
Internal Erase/Program Control
Sector Architecture
Fast Sector Erase Time – 10 Seconds
Byte-by-byte or Word-by-word Programming – 30 µs Typical
Hardware Data Protection
Data Polling for End of Program Detection
Low Power Dissipation
Typical 10,000 Write Cycles
– One 8K Word (16K Bytes) Boot Block with Programming Lockout
– Two 4K Word (8K Bytes) Parameter Blocks
– One 240K Word (480K Bytes) Main Memory Array Block
– 25 mA Active Current
– 50 µA CMOS Standby Current
Function
Addresses
Chip Enable
Output Enable
Write Enable
Reset
VPP can be left unconnected or connected to VCC, GND, 5V or
12V. The input has no effect on the operation of the device.
Data Inputs/Outputs
I/O15 (Data Input/Output, Word Mode)
A-1 (LSB Address Input, Byte Mode)
Selects Byte or Word Mode
No Connect
4-megabit
(512K x 8/
256K x 16)
Single 2.7-volt
Battery-Voltage
Flash Memory
AT49BV4096A
AT49LV4096A
Rev. 1618H–FLASH–4/04
1

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at49bv4096a Summary of contents

Page 1

... The input has no effect on the operation of the device. I/O0 - I/O15 Data Inputs/Outputs I/O15(A-1) I/O15 (Data Input/Output, Word Mode) A-1 (LSB Address Input, Byte Mode) BYTE Selects Byte or Word Mode NC No Connect 4-megabit (512K x 8/ 256K x 16) Single 2.7-volt ™ Battery-Voltage Flash Memory AT49BV4096A AT49LV4096A Rev. 1618H–FLASH–4/04 1 ...

Page 2

... The memory is divided into four blocks for erase opera- tions. There are two 4K word parameter block sections, the boot block, and the main memory array block. The typical number of program and erase cycles is in excess of 10,000 cycles. ...

Page 3

... Block Programming Lockout Override” section). ERASURE: Before a byte or word can be reprogrammed, it must be erased. The erased state of memory bits is a logic “1”. The entire device can be erased by using the Chip Erase command or individual sectors can be erased by using the Sector Erase commands ...

Page 4

... If the boot block lockout has been enabled, the chip erase will not erase the data in the boot block; it will erase the main memory block and the parameter blocks only. After the chip erase, the device will return to the read or standby mode. ...

Page 5

The software product identification exit code should be used to return to standard operation. BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE: The user can override the boot block programming lockout by taking the RESET pin to 12 volts ...

Page 6

... SA = sector addresses: (A17 - A0 01XXX for BOOT BLOCK SA = 02XXX for PARAMETER BLOCK 03XXX for PARAMETER BLOCK 3FXXX for MAIN MEMORY ARRAY Absolute Maximum Ratings* Temperature under Bias ................................ -55°C to +125°C Storage Temperature ..................................... -65°C to +150°C All Input Voltages (including NC Pins) with Respect to Ground ...

Page 7

... IH Condition MHz OUT -400 µA OH AT49BV/LV4096A AT49BV4096A-90 0°C - 70°C -40°C - 85°C 2.7V - 3. OUT High-Z High-Z X High-Z ( A17 = Manufacturer Code ( A17 = V ...

Page 8

... ACC after the falling edge of CE without impact pF). L 2.4V 0. < 3.3V 1.8K OUTPUT PIN 1.3K 100 pF AT49BV4096A-90 Max Min Max 800 800 VALID . ...

Page 9

Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. This parameter is characterized and is not 100% tested. AC Word Load Characteristics Symbol Parameter Address, OE ...

Page 10

Program Cycle Characteristics Symbol Parameter t Byte/Word Programming Time BP t Address Setup Time AS t Address Hold Time AH t Data Setup Time DS t Data Hold Time DH t Write Pulse Width WP t Write Pulse Width High ...

Page 11

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 12

Software Product Identification Entry LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 90 TO ADDRESS 5555 ENTER PRODUCT IDENTIFICATION (2)(3)(5) MODE Software Product Identification Exit OR LOAD DATA AA TO ADDRESS 5555 LOAD DATA ...

Page 13

... Wide, Plastic Gull Wing Small Outline (SOIC) 44R 48T 48-lead mm, Plastic Thin Small Outline Package (TSOP) 1618H–FLASH–4/04 Ordering Code AT49LV4096A-70TI AT49BV4096A-90RC AT49BV4096A-90TC AT49BV4096A-90TI Package Type AT49BV/LV4096A Package Operation Range 48T Industrial (-40° to 85°C) 44R ...

Page 14

Packaging Information 44R – SOIC Dimensions in Millimeters and (Inches). Controlling dimension: Inches. 2325 Orchard Parkway San Jose, CA 95131 R AT49BV/LV4096A 14 0.508(0.020) 0.356(0.014) 13.46(0.530) 13.21(0.520) PIN 1 1.27(0.050) BSC 28.32(1.115) 28.07(1.105) 0.33(0.130) 1.27(0.050) 0º ~ 8º 1.00(0.039) 0.60(0.024) ...

Page 15

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

Page 16

... Fax: (81) 3-3523-7581 Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...

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