AT90S4414 - 8-bit AVR Microcontroller

Overview

The AT90S4414 is a low-power CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. This microcontroller stands out for its ability to execute powerful instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. This feature allows system designers to optimize power consumption while maintaining high processing speed. The AT90S4414 is well-suited for embedded applications requiring efficient performance and low power consumption.

Key Features

• AVR® Enhanced RISC Architecture - High-performance and low-power RISC architecture with 120 powerful instructions, most executing in a single clock cycle.
• 4K Bytes of In-System Reprogrammable Flash Memory - Supports SPI serial interface for program downloading with an endurance of 1,000 write/erase cycles.
• 256 Bytes EEPROM - Non-volatile memory with an endurance of 100,000 write/erase cycles.
• 256 Bytes Internal SRAM - Provides fast data storage and retrieval.
• 32 x 8 General Purpose Working Registers - Enhances data manipulation efficiency.
• 32 Programmable I/O Lines - Flexible interfacing with external peripherals.
• Programmable Serial UART - Facilitates serial communication.
• SPI Serial Interface - Enables high-speed synchronous data transfer.
• Wide Operating Voltage Range (2.7V - 6.0V) - Suitable for low-power and battery-operated applications.
• Fully Static Operation (0 - 20 MHz) - Ensures reliable performance across a wide frequency range.
• Instruction Cycle Time of 50 ns @ 20 MHz - Delivers high-speed execution.
• One 8-Bit Timer/Counter with Separate Prescaler - Provides precise timing and event counting.
• One 16-Bit Timer/Counter with Separate Prescaler - Supports more complex timing and counting tasks.

Applications

The AT90S4414 is designed for a broad range of embedded applications, including but not limited to:

• Industrial Control Systems - Automation, motor control, and sensor interfacing.
• Consumer Electronics - Remote controls, smart home devices, and portable gadgets.
• Automotive Systems - Dashboard controls, lighting systems, and simple engine management.
• Medical Devices - Portable monitoring equipment and diagnostic tools.
• Communication Devices - Modems, serial communication modules, and wireless peripherals.
• Embedded Systems - Custom control systems requiring low power and high efficiency.

Electrical Characteristics

Absolute Maximum Ratings

• Operating Voltage (VCC): 2.7V to 6.0V
• Maximum Operating Frequency: 20 MHz
• Storage Temperature Range: -65°C to +150°C
• Input Voltage on Any Pin: -0.5V to VCC + 0.5V

Recommended Operating Conditions

• Operating Temperature Range: -40°C to +85°C
• Supply Voltage (VCC): 2.7V to 6.0V (for full functionality)
• Clock Frequency: 0 to 20 MHz

Power Consumption

• Active Mode (20 MHz, 5V): 10 mA (typical)
• Idle Mode (20 MHz, 5V): 3.5 mA (typical)
• Power-Down Mode (VCC = 3V): 1 µA (typical)

Package Information

The AT90S4414 is available in a 40-pin PDIP (Plastic Dual In-line Package) and 44-pin TQFP (Thin Quad Flat Package), providing flexibility for different PCB layouts and space constraints.

40-Pin PDIP Package Dimensions

• Body Length: 52.32 mm (max)
• Body Width: 13.97 mm (max)
• Lead Pitch: 2.54 mm

44-Pin TQFP Package Dimensions

• Body Length: 10 mm x 10 mm
• Lead Pitch: 0.8 mm
• Height: 1.0 mm (max)

Conclusion

The AT90S4414 is a versatile and efficient 8-bit microcontroller, ideal for applications requiring a balance of performance, power efficiency, and cost-effectiveness. Its rich feature set, including in-system reprogrammable Flash, EEPROM, and multiple communication interfaces, makes it a strong candidate for a wide array of embedded designs. Whether used in industrial, consumer, automotive, or medical applications, the AT90S4414 delivers reliable performance and flexibility.