AT29LV040A-20TC ATMEL Corporation, AT29LV040A-20TC Datasheet

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AT29LV040A-20TC

Manufacturer Part Number
AT29LV040A-20TC
Description
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer
ATMEL Corporation
Datasheet

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Part Number:
AT29LV040A-20TC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Features
1. Description
The AT29LV040A is a 3-volt only in-system Flash Programmable and Erasable Read
Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by
8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology,
the device offers access times to 150 ns, and a low 54 mW power dissipation. When
the device is deselected, the CMOS standby current is less than 50 µA. The device
endurance is such that any sector can typically be written to in excess of 10,000
times. The programming algorithm is compatible with other devices in Atmel’s 3-volt
only Flash memories.
To allow for simple in-system reprogrammability, the AT29LV040A does not require
high input voltages for programming. Three-volt-only commands determine the opera-
tion of the device. Reading data out of the device is similar to reading from an
EPROM. Reprogramming the AT29LV040A is performed on a sector basis; 256 bytes
of data are loaded into the device and then simultaneously programmed.
During a reprogram cycle, the address locations and 256 bytes of data are captured at
microprocessor speed and internally latched, freeing the address and data bus for
other operations. Following the initiation of a program cycle, the device will automati-
cally erase the sector and then program the latched data using an internal control
timer. The end of a program cycle can be detected by DATA polling of I/O7. Once the
end of a program cycle has been detected, a new access for a read or program can
begin.
Single Voltage, Range 3V to 3.6V Supply
3-volt Only Read and Write Operation
Software Protected Programming
Fast Read Access Time – 150 ns
Low Power Dissipation
Sector Program Operation
Two 16K Bytes Boot Blocks with Lockout
Fast Sector Program Cycle Time – 20 ms Max
Internal Program Control and Timer
DATA Polling for End of Program Detection
Typical Endurance > 10,000 Cycles
CMOS and TTL Compatible Inputs and Outputs
Green (Pb/Halide-free) Packaging Option
– 15 mA Active Current
– 50 µA CMOS Standby Current
– Single Cycle Reprogram (Erase and Program)
– 2048 Sectors (256 Bytes/Sector)
– Internal Address and Data Latches for 256 Bytes
4-megabit
(512K x 8)
3-volt Only
256-byte Sector
Flash Memory
AT29LV040A
0334H–FLASH–9/08

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AT29LV040A-20TC Summary of contents

Page 1

... Green (Pb/Halide-free) Packaging Option 1. Description The AT29LV040A is a 3-volt only in-system Flash Programmable and Erasable Read Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology, the device offers access times to 150 ns, and a low 54 mW power dissipation. When the device is deselected, the CMOS standby current is less than 50 µ ...

Page 2

... Pin Configurations Pin Name A0 - A18 I/O0 - I/O7 NC 2.1 32-lead PLCC Top View 2.2 32-lead TSOP (Type 1) Top View AT29LV040A 2 Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs No Connect I/ ...

Page 3

... Read The AT29LV040A 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 outputs. The outputs are put in the high impedance state whenever high. This dual-line con- trol gives designers flexibility in preventing bus contention ...

Page 4

... DATA Polling The AT29LV040A features DATA polling to indicate the end of a program cycle. During a pro- gram cycle an attempted read of the last byte loaded will result in the complement of the loaded data on I/O7. Once the program cycle has been completed, true data is valid on all outputs and the next cycle may begin ...

Page 5

... These two 16K memory sections are referred to as boot blocks. Secure code which will bring up a system can be contained in a boot block. The AT29LV040A blocks are located in the first 16K bytes of memory and the last 16K bytes of memory. The boot block programming lockout feature can therefore support systems that boot from the lower addresses of memory or the higher addresses ...

Page 6

... MHz mA 3.6V OUT 1 -100 μ 3. AT29LV040A-15 -40°C - 85°C 3.3V ± 0. OUT High Z High Z ( Manufacturer Code ( Device Code IL ...

Page 7

... whichever occurs first ( pF This parameter is characterized and is not 100% tested. 0334H–FLASH–9/08 (1)(2)(3)( after the address transition without impact on t ACC after the falling edge of CE without impact AT29LV040A AT29LV040A-15 Min Max Units 150 ns 150 ...

Page 8

... Input Test Waveforms and Measurement Level t R 12. Output Test Load 13. Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. These parameters are characterized and not 100% tested. AT29LV040A < Max 6 12 Units Conditions OUT 0334H– ...

Page 9

... CE Controlled Notes: 1. The 3-byte address and data commands shown on the next page must be applied prior to byte loads complete sector (256 bytes) should be loaded using these waveforms shown in these byte load waveform diagrams. 0334H–FLASH–9/08 (1)(2) AT29LV040A Min Max Units 10 100 ...

Page 10

... ADDRESS 2AAA LOAD DATA A0 TO ADDRESS 5555 WRITES ENABLED LOAD DATA TO ENTER DATA (3) SECTOR (256 BYTES) PROTECT STATE AT29LV040A 10 (1) Notes: 1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex). 2. Data Protect state will be re-activated at end of program cycle. 3. 256 bytes of data MUST BE loaded. (2) Min ...

Page 11

... Toggling Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used by the address should not vary. 0334H–FLASH–9/08 (1) (1) (1)(3) AT29LV040A Min Typ Max Min Typ ...

Page 12

... The device returns to standard operation mode. 5. Manufacturer Code is 1F. The Device Code is C4. 0334H–FLASH–9/08 25. Boot Block Lockout Feature Enable Algorithm (2)(3)(5) Notes: ( AT29LV040A LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 80 TO ADDRESS 5555 LOAD DATA AA TO ...

Page 13

... Green Package Option (Pb/Halide-free) I (mA ACC (ns) Active Standby 150 15 0.05 32J 32-lead, Plastic J-leaded Chip Carrier (PLCC) 32T 32-lead, Thin Small Outline Package (TSOP) 0334H–FLASH–9/08 Ordering Code Package AT29LV040A-15JU 32J AT29LV040A-15TU 32T Package Type AT29LV040A Operation Range Industrial (-40° to 85° ...

Page 14

... Allowable protrusion is .010"(0.254 mm) per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. 3. Lead coplanarity is 0.004" (0.102 mm) maximum. 2325 Orchard Parkway San Jose, CA 95131 R AT29LV040A 14 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER E1 E ...

Page 15

... Orchard Parkway San Jose, CA 95131 R 0334H–FLASH–9/08 PIN SEATING PLANE A1 TITLE 32T, 32-lead ( Package) Plastic Thin Small Outline Package, Type I (TSOP) AT29LV040A 0º ~ 8º GAGE PLANE COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX A – ...

Page 16

... 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. © 2008 Atmel Corporation. All rights reserved. Atmel marks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia ...

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