Manufacturer Part Number
AT89C4051-12PU
Manufacturer
Microchip Technology
Introduction
8-bit microcontroller with 4KB of Flash program memory
Based on the industry-standard 8051 microcontroller architecture
Ideal for a variety of embedded control applications
Product Features and Performance
4KB of Flash program memory
128 bytes of RAM
15 I/O lines
UART/USART communications interface
Brown-out detect and reset
Power-on reset (POR)
Internal oscillator
Product Advantages
Wide operating voltage range of 2.7V to 6V
Low power consumption
Robust 8051 architecture
Integrated peripherals for enhanced functionality
In-system programmable Flash memory
Key Technical Parameters
8-bit core
12MHz maximum clock speed
4KB Flash program memory
128 bytes of RAM
15 I/O lines
UART/USART interface
Quality and Safety Features
RoHS3 compliant
Industrial temperature range of -40°C to 85°C
Compatibility
Designed to be compatible with the 89C4051 family of 8051-based microcontrollers
Application Areas
Embedded control systems
Industrial automation
Household appliances
Consumer electronics
Product Lifecycle
This product is still in active production and is not nearing discontinuation.
Microchip Technology offers a range of compatible and upgraded 8051 microcontrollers as replacement options.
Key Reasons to Choose This Product
Proven 8051 architecture for reliable and robust performance
Flexible operating voltage range for diverse applications
Integrated peripherals for enhanced functionality
In-system programmable Flash memory for easy code updates
Industrial temperature range for harsh environments
Compatibility with the 89C4051 family for easy migration
AT89C2051-24PU/12PIAtmel (Microchip Technology)