C8051F807-GU

Embedded - Microcontrollers: C8051F807-GU Application Field and Working Principle

The C8051F807-GU microcontroller product is a low power, highly integrated, 8-bit microcontroller by Silicon Labs targeted for applications that require a long battery life and a fast, single cycle throughput. This microcontroller provides innovative functions like a communication interface, an enhanced Capture/Compare/PWM module, a low-voltage wake-up interrupt and a data-acquisition system.

The C8051F807-GU is ideal for applications such as portable medical equipment and consumer electronics, where its small size, low power consumption (3 mA/MHz in active mode and 0.2 μA in low-power standby mode) and low voltage operation (down to 1.8V) are advantages.

The C8051F807-GU offers many features not common in other 8-bit microcontrollers. It employs an 8051 core with a maximum operating frequency of 24MHz, 8K bytes of flash program memory, 256 bytes of RAM, 28 general-purpose I/O pins, four 16-bit timers and capture/compare/PWM functions, one UART, four SFRs, and one SPI/16-bit I2C communications interface.

The maximum operating frequency of the C8051F807-GU is 24MHz which gives the device a single cycle throughput of up to 8 MIPS (Million Instructions per Second). The device also supports short instruction fetch times and high context switching capability.

The main benefits of the C8051F807-GU include its low power consumption, high-speed operation, enhanced capture/compare/PWM functions, unique wake-up interrupts and its integrated data-acquisition system. These features make the C8051F807-GU an ideal choice for high-performance embedded applications requiring low power consumption, such as portable medical equipment, consumer electronics and more.

Application Fields

The C8051F807-GU can be used in a wide variety of applications including but not limited to:

• Industrial control systems
• Medical instrumentation
• Home appliances
• Consumer electronics
• Security systems
• Automotive
• Telecom/wireless modules

Working Principle

The C8051F807-GU uses the 8051 core, which is basically a core based on Harvard architecture. It is designed with a wide range of features which separate code and data memory, allowing code memory to be accessed much faster compared to traditional processors. This design also allows complex data operations, improving the performance of the processor.

The 8051 core has two sets of accumulators used for data manipulation and computation. The first set includes two 8-bit accumulators: A and B. The second set consists of two 16-bit accumulators: DPH and DPL. The 8-bit accumulators allow for 8-bit operations; whereas the 16-bit accumulators allow for 16-bit operations.

The C8051F807-GU has a wide range of on-chip peripherals including four 16-bit timers, programmable counter arrays (PCA) for pulse-width modulation, UART for serial communication, serial port (SPI), and enhanced Capture/Compare/PWM (CCP) module. All these peripherals can be used independently, allowing the microcontroller to manage functions with minimal load on the core.

The device also features an enhanced wake-up interrupt which can be used to enter low-power mode during idle time. This interrupt is triggered by a user-programmable logic voltage level. When triggered, the device will enter low-power mode, which consumes only 0.2 μA. This ensures that the device can manage the power consumption efficiently.

The C8051F807-GU also has an integrated data acquisition (DAQ) system, which can be used for analog-to-digital conversion and temperature sensor calibration. This DAQ system also provides a configurable gain amplifier, allowing the device to accurately capture signals from other external ADC chips.

Conclusion

The C8051F807-GU microcontroller from Silicon Labs is an 8-bit device with numerous on-chip peripherals. It offers extended battery life and a fast, single cycle throughput for highly integrated embedded applications. It has a maximum operating frequency of 24MHz and a power consumption of 3 mA/MHz in active mode and 0.2 μA in low-power standby mode. The enhanced capture/compare/PWM module, wake-up interrupt and integrated data-acquisition system make it ideal for various applications such as portable medical equipment and consumer electronics.