AT90S8515 - 8-bit AVR Microcontroller Technical Summary

Overview

The AT90S8515 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 speeds, making it ideal for a wide range of embedded applications.

With its advanced RISC architecture, the AT90S8515 provides a balanced combination of performance, power efficiency, and flexibility. It is particularly suited for applications requiring rapid data processing, real-time control, and low power consumption.

Features

The AT90S8515 microcontroller boasts a comprehensive set of features that enhance its performance and versatility:

• AVR® Enhanced RISC Architecture - High-performance and low-power RISC architecture with 120 powerful instructions, most executing in a single clock cycle.
• 8K Bytes of In-System Reprogrammable Flash Memory - Supports SPI serial interface for program downloading with an endurance of 1,000 write/erase cycles.
• 512 Bytes EEPROM - Non-volatile memory with an endurance of 100,000 write/erase cycles.
• 512 Bytes Internal SRAM - Provides fast data storage and retrieval.
• 32 x 8 General Purpose Working Registers - Enhances data manipulation and processing efficiency.
• 32 Programmable I/O Lines - Offers extensive connectivity options for interfacing with external devices.
• Programmable Serial UART - Facilitates serial communication with other devices.
• SPI Serial Interface - Enables high-speed synchronous serial communication.
• Wide Operating Voltage Range (2.7V - 6.0V) - Supports flexible power supply configurations.
• Fully Static Operation (0 - 20 MHz) - Ensures stable performance across a wide frequency range.
• Instruction Cycle Time of 50 ns @ 20 MHz - Delivers high-speed execution for time-critical applications.
• 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 AT90S8515 microcontroller is designed for a broad spectrum of applications, including but not limited to:

• Industrial Control Systems - Real-time monitoring and control of industrial processes.
• Consumer Electronics - Embedded control in home appliances, toys, and gadgets.
• Automotive Systems - Engine control units, dashboard displays, and sensor interfaces.
• Medical Devices - Portable medical instruments and diagnostic equipment.
• Communication Systems - Modems, routers, and other networking devices.
• Embedded Systems - Custom solutions requiring low power and high performance.

Electrical Characteristics

The AT90S8515 operates under the following electrical specifications:

Absolute Maximum Ratings

• Operating Voltage (VCC): 2.7V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 20 MHz

Power Consumption

• Active Mode (20 MHz, 5V): Typically 15 mA
• Idle Mode (20 MHz, 5V): Typically 6 mA
• Power-Down Mode (VCC = 3V): Typically 1 µA

Timing Characteristics

• Instruction Cycle Time: 50 ns @ 20 MHz
• SPI Clock Frequency: Up to 5 MHz
• UART Baud Rate: Up to 1 Mbps

Package Information

The AT90S8515 is available in multiple package options to suit different application requirements:

40-Pin PDIP (Plastic Dual In-line Package)

• Dimensions: 52.32 mm x 13.97 mm
• Pin Pitch: 2.54 mm
• Operating Temperature: -40°C to +85°C

44-Pin TQFP (Thin Quad Flat Package)

• Dimensions: 10 mm x 10 mm
• Pin Pitch: 0.8 mm
• Operating Temperature: -40°C to +85°C

44-Pin PLCC (Plastic Leaded Chip Carrier)

• Dimensions: 16.51 mm x 16.51 mm
• Pin Pitch: 1.27 mm
• Operating Temperature: -40°C to +85°C

Conclusion

The AT90S8515 microcontroller is a versatile and high-performance solution for embedded systems requiring efficient processing, low power consumption, and extensive connectivity options. Its robust feature set, including in-system reprogrammable Flash memory, EEPROM, and multiple communication interfaces, makes it suitable for a wide range of applications. With its flexible package options and reliable electrical characteristics, the AT90S8515 is an excellent choice for designers seeking a balance between performance and power efficiency.