W78E516B40FL

Introduction to W78E516B40FL

The W78E516B40FL is an 8-bit microcontroller consisting of a 32K bytes program memory and 2K bytes data memory, including 128 bytes XRAM. It is based on the 8-051 core architecture, can be extended with 8 channels of 8-bit timer/counters, 4 channels of 16- bit timer/counter, system control, clock/ Power control and 34 I/O pins. It has an operating speed ranging from 12MHz to 50MHz, a 0-20MHz oscillator, 3 interrupt sources and 80 unused pins. It is highly integrated, reliable and cost-effective for applications such as home appliances and industrial control systems.

W78E516B40FL Application Field and Working Principle

Application Fields

The W78E516B40FL is used for a variety of embedded applications. Its versatile features and robustness make it ideal for industrial control systems and home appliances such as washing machine, refrigerators, air conditioners, monitors, 3D printer, laser marking machines and other applications in the medical, automotive, HVAC and communications industries.

Working Principle

The W78E516B40FL is an 8051-based microcontroller with enhanced performance, integrated peripherals, and fast operations. It has an instruction fetch cycle of 12 cycles per 1MHz of oscillator, and a maximum operating frequency of up to 50MHz. It is composed of ROM, RAM, EEPROM and I/O ports, connected together via a high-speed system bus, to enable data transfer within different components of the microcontroller. The ROM stores the program instructions, while the RAM stores the temporary variables of the program, such as the status and result of specific operations or variables of a special loop. The EEPROM stores the program data that needs to be permanently retained. The I/O ports enable communication with the external components.

Peripherals

The W78E516B40FL comes with a wide range of peripherals, such as 8-bit timer, 16-bit timer, 3 channel PWM, 12 channel A/D converter, 1 channel can bus, and 18 bit x 8 channel HDLC/UART. It also includes 8 x 8 bit and 4 x 16 bit interrupt sources, up to 78 external interrupts, and up to 5 different forms of Watch-Dog timer. All these integrated peripherals and their connections enable the microcontroller to perform various tasks autonomously.

Power Saving

The W78E516B40FL also supports a wide range of power saving modes such as sleep, idle and stop modes, to reduce current consumptions when the microcontroller is in stand-by mode. It has a built-in Voltage Brown Out Detector and an internal switch to enable diverse overall power savings.

Conclusion

The W78E516B40FL is a highly-integrated and highly-reliable 8-bit microcontroller with exceptional performance and extensive peripheral support. Its versatile features, robustness and power saving modes make it an ideal choice for a variety of embedded applications. It can successfully be used as an industrial control system component, as well as a home appliance component.