Part Number: C8051F530A-IT

Manufacturer: Silicon Labs

Description: IC MCU 8BIT 64KB FLASH 48TQFP

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of C8051F530A-IT

Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer Silicon Labs
Series C8051F53x
Packaging Tube
Part Status Active
Core Processor 8051
Core Size 8-Bit
Speed 25MHz
Connectivity LIN, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O 16
Program Memory Size 8KB (8K x 8)
Program Memory Type FLASH
RAM Size 256 x 8
Voltage – Supply (Vcc/Vdd) 1.8 V ~ 5.25 V
Data Converters A/D 16x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Package / Case 20-TSSOP (0.173″, 4.40mm Width)
Supplier Device Package 20-TSSOP


The C8051F530A-IT microcontroller from Silicon Laboratories is based on the time-tested 8051 architecture, which is a cornerstone of embedded systems. This microcontroller combines both the series’ pedigree and the continued appeal of the 8051 architecture, which is noted for its dependability and versatility in a wide range of applications. Let’s look at its features and capabilities to see how powerful it is for embedded projects.

Key Features and Specifications

The C8051F530A-IT microcontroller has a plethora of capabilities that make it a strong contender for embedded system development. Here are some more details about it:

  • The microcontroller’s architecture is based on an 8-bit 8051 design. This tried-and-true design lays the groundwork for efficient computation and control.
  • Clock Speed: The C8051F530A-IT provides processing power suited for a wide range of workloads, from real-time control to data processing, with a clock speed of up to 25 MHz.
  • Flash Storage: With 8KB (8K x 8) of Flash memory, this microcontroller has plenty of room to save your program code. Because Flash memory is non-volatile, your code remains intact even during power cycles.
  • RAM: The microcontroller has a large quantity of RAM for storing temporary data during program execution. This allows your programs to run more smoothly and efficiently.
  • The C8051F530A-IT is available in a 20-TSSOP (Thin Shrink Small Outline Package) form size. This small and adaptable packaging is intended to save space while allowing for easy integration into a variety of designs.

These capabilities enable developers to design responsive and capable embedded systems by using the strengths of the 8051 architecture and the microcontroller’s performance characteristics.

Clock System

The C8051F530A-IT microcontroller’s clock system is a vital component that orchestrates the timing and synchronization of its operations. Let’s look at how the microcontroller generates and distributes the clock:

  • Clock Generation: The microcontroller normally generates its clock signal using an external crystal oscillator or an internal oscillator circuit. This clock signal is then supplied into an internal circuit, which separates it into distinct clock frequencies. The separated frequencies can power a variety of internal components and peripherals.
  • Clock Distribution: After the clock signal is generated, it is disseminated to various components of the microcontroller. It is used to synchronize instruction execution, peripheral operation, and the timing of events such as interrupts. The CPU core, timers, communication modules (UART, SPI, and so on), and other peripherals may all have their own clock domains on the microcontroller.

Effects of Clock Speed on Performance

The clock speed directly impacts the microcontroller’s performance and capabilities. Here’s how it affects the overall system:

  1. Execution Speed:A higher clock speed allows the microcontroller to execute instructions more quickly. This is particularly beneficial for applications that require rapid data processing and response times.
  2. Throughput:The clock speed affects the number of instructions executed per second, which directly impacts the throughput of the microcontroller. Faster clock speeds lead to higher data throughput.
  3. Real-Time Control:In real-time systems, where precise timing is essential, a higher clock speed enables more accurate control and timing of events.
  4. Power Consumption:Higher clock speeds generally result in increased power consumption. Balancing clock speed with power efficiency is crucial, especially for battery-powered devices.
  5. Compatibility:The clock speed needs to be considered when interfacing with external devices. Some peripherals might have timing constraints that need to be met by the microcontroller’s clock.
  6. Peripheral Operation:The clock speed affects the maximum achievable baud rate in serial communication modules like UART. Faster clocks allow higher data transfer rates.
  7. Code Execution:Faster clock speeds can lead to quicker execution of code, potentially reducing latency in complex algorithms or time-critical tasks.
  8. Heat Dissipation:Higher clock speeds generate more heat, which might necessitate additional thermal management measures.

It’s crucial to note that while faster clock speeds improve performance, they can have drawbacks including increased power consumption and perhaps more difficult design issues.

To summarize, the clock system is a critical component of microcontroller operation, determining its performance, efficiency, and ability to handle real-time tasks. When designing systems, clock speed must be carefully considered in order to strike the correct balance between performance and power consumption.

I/O Ports and Pins

The C8051F530A-IT microcontroller has a number of I/O pins that can be set to be either input or output. These pins act as a link between the microcontroller and the outside world. Developers can program the pins for a variety of functions including as digital I/O, analog input, and communication protocols such as SPI or I2C.

Interrupts and Timers

In response to an event, interrupts cause the microcontroller to pause its present operation and quickly run a predetermined piece of code. Interrupts are used to deal with time-sensitive events like sensor inputs or communication signals. Interrupts can be prioritized by the microcontroller based on their importance.

Serial Communication

Asynchronous serial communication is enabled via the UART module, which allows the microcontroller to send and receive data serially. It is commonly used to communicate between microcontrollers and other devices such as sensors, displays, or computers. UART communication employs two lines: one for transmission (TX) and one for reception (RX).


The C8051F530A-IT microcontroller’s versatility opens doors to a wide array of applications across various industries. Its robust features and capabilities make it well-suited for:

  1. Industrial Automation:Controlling machinery, monitoring sensors, and managing processes in factories.
  2. Consumer Electronics:Powering devices like home appliances, smart gadgets, and wearable technology.
  3. Automotive:Handling control systems in vehicles, from engine management to safety features.
  4. IoT (Internet of Things):Enabling connectivity and data exchange in IoT devices.
  5. Medical Devices:Providing control and data processing in medical instruments and devices.
  6. Communication Systems:Playing a role in communication modules and networking equipment.


The C8051F530A-IT microcontroller demonstrates the 8051 architecture’s continued importance in the embedded industry. Its 8-bit CPU, fast clock speed, memory, and diverse peripherals enable developers to realize their creative ideas.

The journey is now yours to continue. For more information and to order this product, contact ICRFQ, a major electrical component distributor in China. Dive into the world of embedded systems, explore the resources provided by Silicon Laboratories, and begin experimenting with the C8051F530A-IT microcontroller. This microcontroller can be your dependable partner on the road to invention, whether you’re developing the next breakthrough technology or simply honing your skills.

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Kevin Chen