Manufacturer Part Number
AT89LS51-16PU
Manufacturer
microchip-technology
Introduction
The AT89LS51-16PU is an obsolete embedded microcontroller from Microchip Technology's 89LS series, designed around the 8051 core processor. It operates at 16MHz and includes UART/USART connectivity, along with a Watchdog Timer as its peripheral feature.
Product Features and Performance
Core Processor: 8051, 8-Bit
Speed: 16MHz
Connectivity: UART/USART for serial communication
Peripherals: Watchdog Timer (WDT) for system reliability
Number of I/O: 32 for extensive external interfacing
Program Memory Size: 4KB FLASH, allowing for efficient program storage
RAM Size: 128 x 8, supporting variable data storage
Internal Oscillator for stand-alone operation
Operating Temperature: -40°C to 85°C, suitable for challenging environments
Mounting Type: Through Hole for easy assembly on printed circuit boards
Product Advantages
Extensive I/O count for versatile peripheral interfacing
Low power consumption with 2.7V to 4V supply voltage range
Internal oscillator reduces external component requirement
Robust temperature range supports operation in extreme conditions
Key Technical Parameters
Core Size: 8-Bit
Speed: 16MHz
Supply Voltage: 2.7V ~ 4V
Operating Temperature: -40°C ~ 85°C
Package: 40-DIP (0.600", 15.24mm)
Quality and Safety Features
Extended operating temperature range ensuring reliability in varying climates
Through-hole mounting offers mechanical stability on PCBs
Compatibility
Compatible with standard 8051 development tools and software for ease of development and debugging
Application Areas
Industrial control systems
Consumer electronics
Legacy system maintenance or updates where 8051 microcontrollers are integral
Product Lifecycle
Obsolete: The AT89LS51-16PU is designated as obsolete, with decreasing availability. Users should consider replacements or upgrades for new designs.
Several Key Reasons to Choose This Product
Strong legacy support for 8051-based applications
Integrated WATCHDOG timer for improved reliability without external components
Low operating voltage and power consumption for energy-sensitive projects
High temperature resilience for industrial and outdoor applications