Professional IC Distribution & Technical Solutions

The M5221L is a microcontroller manufactured by MIT (Microchip Technology Inc.). Below are its key specifications, descriptions, and features:

Specifications:

• Manufacturer: Microchip Technology Inc. (MIT)
• Core: 8-bit microcontroller
• Architecture: Based on the MCS-51 instruction set
• Clock Speed: Up to 12 MHz
• Program Memory (ROM): 8 KB (mask ROM)
• RAM: 256 bytes
• I/O Pins: 32 (4 ports of 8 bits each)
• Timers/Counters: 3 (16-bit)
• Serial Communication: UART (Full-duplex)
• Interrupt Sources: 6 (2 external, 3 timer-based, 1 serial)
• Operating Voltage: 4.0V – 5.5V
• Package: 40-pin DIP (Dual In-line Package)

Descriptions:

The M5221L is an industrial-grade 8-bit microcontroller designed for embedded control applications. It is compatible with the Intel 8051 architecture, offering a cost-effective solution for automation, consumer electronics, and industrial systems.

Features:

• 8051-Compatible Core – Ensures easy migration from legacy 8051 designs.
• On-Chip Oscillator – Supports crystal or external clock input.
• Power Saving Modes – Includes Idle and Power-Down modes for reduced power consumption.
• Boolean Processor – Supports bit-level operations for efficient control logic.
• Expandable Memory – External memory interface for additional ROM/RAM.
• High Noise Immunity – Suitable for industrial environments.

This microcontroller is commonly used in applications such as:

• Industrial control systems
• Automotive electronics
• Home appliances
• Embedded sensor interfaces

For detailed electrical characteristics and timing diagrams, refer to the official Microchip datasheet.