Atmel AT89LP6440-20PU

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Product attributes Property Value
Manufacturer Atmel
Product Series 89LP
Packaging Bulk |
Core Processor 8051
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 38
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
EEPROM Size 8K x 8
RAM Size 4.25K x 8
Voltage - Supply (Vcc/Vdd) 2.4V ~ 3.6V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Through Hole
Supplier Device Package 40-PDIP
Package / Case 40-DIP (0.600", 15.24mm)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Atmel AT89LP6440-20PU is a classic 8051-based 8-bit microcontroller running at 20MHz. It provides 64KB of flash and 4.25KB of RAM, with a supply range of 2.4V to 3.6V. Featuring Brown-out Detect/Reset, POR, PWM, and WDT, it operates from -40°C to 85°C. The 40-DIP package is perfect for through-hole designs and prototyping.

  • Large Flash Memory: 64KB supports complex applications without external storage.
  • Through-Hole Package: 40-DIP is easy to solder and replace, ideal for prototyping.
  • Familiar 8051 Architecture: Extensive development resources and legacy code compatibility.
  • Integrated Safety Features: Brown-out detection and WDT enhance reliability.

Legacy Industrial Controllers

The 40-DIP package allows easy prototyping and replacement in existing 8051-based systems, with 64KB flash for large control programs.

Educational Development Boards

The DIP package and 8051 architecture make it ideal for teaching embedded systems, with PWM for motor labs.

Medical Device Interfaces

With 2.4V operation and Brown-out detection, it suits battery-powered diagnostic tools requiring reliable reset behavior.

Point-of-Sale Terminals

The 4.25KB RAM supports buffering of transaction data, while the 8051 core handles communication protocols.

Automotive Aftermarket Accessories

Operating from -40°C to 85°C, it controls add-on lighting or alarm systems, with WDT ensuring no lockups.

Home Automation Hubs

The 64KB flash stores complex automation rules, while PWM drives dimmers and the DIP package simplifies board layout.

Q: What core does the AT89LP6440-20PU use?
A: It uses the 8051 core, running at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 2.4V to 3.6V.
Q: How much flash and RAM are included?
A: It has 64KB of flash and 4.25KB of RAM.
Q: What package is available?
A: It comes in a 40-DIP package.
Q: What are the key features?
A: It includes Brown-out Detect/Reset, POR, PWM, and WDT.
Base Product Number : AT89LP6440
20MHz 4.25KB RAM 40-DIP 64KB Flash 8-bit MCU 8051 core Brown-out Detect Education Industrial Medical POR PWM WDT
Q: What core does the AT89LP6440-20PU use?
A: It uses the 8051 core, running at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 2.4V to 3.6V.
Q: How much flash and RAM are included?
A: It has 64KB of flash and 4.25KB of RAM.
Q: What package is available?
A: It comes in a 40-DIP package.
Q: What are the key features?
A: It includes Brown-out Detect/Reset, POR, PWM, and WDT.