AT29C020-70JU - ATMEL Corporation - 2-megabit (256K x 8) 5-volt Only Flash Memory



Detailed Product Description


Quick Detail:


2-megabit (256K x 8) 5-volt Only Flash Memory





The AT29C020 is a 5-volt-only in-system Flash programmable and erasable read-only memory (PEROM). Its 2 megabits of memory is organized as 262,144 bytes. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 70 ns with power dissipation of just 220 mW over the industrial temperature range. When the device is deselected, the CMOS standby current is less

than 300 µA. Device endurance is such that any sector can typically be written to in excess of 10,000 times.

To allow for simple in-system reprogrammability, the AT29C020 does not require high input voltages for programming. Five-volt-only commands determine the operation of the device. Reading data out of the device is similar to reading from an EPROM.

Reprogramming the AT29C020 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 internally latched, freeing the address and data bus for other operations. Following the initiation of a program cycle, the device will automatically 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.





• Fast Read Access Time – 70 ns

• 5-volt Only Reprogramming

• Sector Program Operation

– Single Cycle Reprogram (Erase and Program)

– 1024 Sectors (256 Bytes/Sector)

– Internal Address and Data Latches for 256 Bytes

• Internal Program Control and Timer

• Hardware and Software Data Protection

• Two 8K Bytes Boot Blocks with Lockout

• Fast Sector Program Cycle Time – 10 ms

• DATA Polling for End of Program Detection

• Low Power Dissipation

– 40 mA Active Current

– 300 µA CMOS Standby Current

• Typical Endurance > 10,000 Cycles

• Single 5V ±10% Supply

• CMOS and TTL Compatible Inputs and Outputs

• Green (Pb/Halide-free) Packaging Option






AT29C020 JU, TU Suffix

Product Photos


Standard Package



Integrated Circuits (ICs)







Format - Memory


Memory Type


Memory Size

2M (256K x 8)





Voltage - Supply

4.5 V ~ 5.5 V

Operating Temperature

-40°C ~ 85°C

Package / Case

32-LCC (J-Lead)

Supplier Device Package


Catalog Page

1092 (CN081 PDF)



Competitive Advantage:


Warranty :180 days !
Free shipping: Order over $1000 win a free shipment fee
(goods weight below 3Kg) ,during 20130901-20130930 .

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