Products > Integrated Circuits (ICs) > Memory > AT29C020-90JU

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90NS, PLCC, IND TEMP, GREEN(FLASH),Flash 256K x 8 90 ns 4.5V-5.5V

  • Package/Case :
  • PLCC-32
  • Product Categories :
  • Flash
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 655


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AT29C020-90JU Product Details

• 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

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. 


AT29C020-90JU Pinout
(Picture: Pinout)

Technical Parameters

  • Data Bus Width
  • 8 bit
  • Memory Type
  • NOR Flash
  • Memory Size
  • 512 K
  • Architecture
  • Sectored
  • Interface Type
  • SPI
  • Access Time
  • 70 ns
  • Supply Voltage Max
  • 5.5 V
  • Supply Voltage Min
  • 4.5 V
  • Maximum Operating Current
  • 40 mA
  • Operating Temperature
  • + 85 C
  • Mounting Style
  • Package / Case
  • PLCC-32
  • Factory Pack Quantity
  • 32

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
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Microchip Technology, Inc

Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Microchip offers outstanding technical support along with d...
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