Part Number: STM8S003K3T6C

Manufacturer: STMicroelectronics

Description: IC MCU 8BIT 8KB FLASH 32LQFP

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

Technical Specifications of STM8S003K3T6C

Datasheet  STM8S003K3T6C datasheet
Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer STMicroelectronics
Series STM8S
Packaging Tray
Part Status Active
Core Processor STM8
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, IrDA, LIN, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 28
Program Memory Size 8KB (8K x 8)
Program Memory Type FLASH
EEPROM Size 128 x 8
RAM Size 1K x 8
Voltage – Supply (Vcc/Vdd) 2.95 V ~ 5.5 V
Data Converters A/D 4x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Package / Case 32-LQFP
Supplier Device Package 32-LQFP (7×7)

STM8S003K3T6C Introduction

The STM8S003K3T6C microcontroller from STMicroelectronics is a powerful 8-bit microcontroller. In this guide, we’ll look at what this microcontroller can do and how it works, as well as what it means for developing embedded systems. We will also talk about the “value line” and the benefits it has for making plans that are good for the money.

Importance of 8-bit microcontrollers in embedded systems

Embedded systems are built into a lot of the electronics we use every day, from home tools to car systems. 8-bit microcontrollers are a key part of these systems because of how well and reliably they can do basic computing jobs. They are great for a wide range of applications because they offer a good mix of performance, power efficiency, and cost.

8-bit microcontrollers are great for devices that run on batteries or applications where room is limited because they are small and use little power. They can do simple control jobs, connect to sensors, and process data, which makes it possible for embedded systems to have many different functions.

STM8S003K3T6C Specifications and Features

The STM8S003K3T6C microcontroller has a variety of specs and features that make it a flexible choice for embedded systems. Here is a summary of its most important specs and features:

● Clock Speed

The microcontroller has a maximum frequency of 16 MHz, which lets it run commands quickly and efficiently.

● Memory Size

Flash Memory: The STM8S003K3T6C has an 8 KB flash memory, which is plenty of room for storing programs.

EEPROM: It also has a 128-byte EEPROM (Electrically Erasable Programmable Read-Only Memory) for storing data that won’t disappear when the power goes out.

RAM: The microprocessor has 1 KB of RAM for storing temporary data while the program runs.

● Peripheral Interfaces

General Purpose Input/Output (GPIO): The STM8S003K3T6C has a set of GPIO pins that can be set up as inputs or outputs to connect to devices and sensors outside the chip.

USART stands for Universal Synchronous/Asynchronous Receiver Transmitter. This link lets the microcontroller and other devices send and receive data in a serial fashion.

SPI, or Serial Peripheral Interface, is a way for peripheral devices to talk to each other using a synchronous serial system.

I2C (Inter-Integrated Circuit): Using a two-wire serial system, the I2C interface lets you talk to other devices like sensors and external memory.

● Timers and interrupts

Timers: The STM8S003K3T6C has a number of timers, both general-purpose and “watchdog” clocks. These timers let you set exact times, start events, and keep track of time.

Interrupts: The microcontroller can handle multiple interrupt sources, which makes it easier to handle events from the outside world and lessens the need to ask all the time.

With these specs and features, the STM8S003K3T6C microcontroller has all the tools it needs to connect to other devices, process data, and control things quickly. Because it has a lot of memory, a variety of peripheral ports, and both timers and interrupts, it can be used in a wide range of embedded systems, such as industrial automation, consumer electronics, Internet of Things (IoT) devices, and more.

● Architecture

CPU Core and Instruction Set: The STM8S003K3T6C microcontroller is based on the STM8 core, which is an advanced 8-bit core architecture intended for high performance and low power consumption. The STM8 core is based on a Harvard design, which means that program and data memory are accessed by separate buses.

The STM8S003K3T6C microcontroller’s instruction set is built on an 8-bit RISC (Reduced Instruction Set Computer) architecture that is small and fast. It has a wide range of instructions for working with data, doing math, controlling the flow of the program, and handling I/O.

Memory Organization: This is how the memory is set up on the STM8S003K3T6C microcontroller:

  • Flash Memory: The computer code is stored in the 8 KB of flash memory. Flash memory is “non-volatile,” which means that the computer code stays even when the power goes out. The flash memory can be programmed and erased, which makes it possible to change the firmware.
  • EEPROM: The microcontroller has a 128-byte EEPROM for saving data that doesn’t change when the power goes out. The EEPROM can be used to store settings for setup, calibration data, and other information that needs to be kept.
  • RAM: The microprocessor has 1 KB of RAM (random access memory), which is used to store temporary data while the program is running. RAM is volatile, which means that its data is lost when the power goes out. During the running of a program, it is used to store variables, stack actions, and intermediate results.
  • Clock and Reset System: The STM8S003K3T6C microcontroller has a flexible clock and reset system that makes sure it works well and reliably. The clock system has both internal and exterior oscillators that can be used to keep time. It can make system clocks and clock messages for other parts of the computer.
  • The reset method makes sure that the microcontroller starts up in a controlled way. It has a power-on-restart (POR) circuit that sets up the microcontroller when it is turned on. A hardware reset can be started with a reset pin, and a software reset can be made with a specialized reset circuit inside the chip.
  • Interfaces to the Periphery: The STM8S003K3T6C microcontroller has a number of peripheral ports that allow it to connect to and talk to other devices. These things are:
  • GPIO stands for “General Purpose Input/Output.” The GPIO pins can be set up as inputs or outputs and are used to connect to other devices like sensors, actuators, and screens.
  • USART (Universal Synchronous/Asynchronous Receiver Transmitter): The USART allows serial contact using different protocols, such as UART (Universal Asynchronous Receiver Transmitter) and SPI (Serial Peripheral Interface).
  • SPI (Serial Peripheral Interface): The SPI interface allows high-speed, full-duplex, synchronous contact with compatible peripherals like sensors, displays, and memory devices.
  • I2C (Inter-Integrated Circuit): The I2C interface lets machines that use the I2C protocol talk to each other. It is often used to connect sensors, EEPROMs, real-time clocks, and other external ICs.
  • Timers and Breaks: Timers and interrupts are important parts of the STM8S003K3T6C microcontroller. They let you set precise times, handle events, and run programs quickly and efficiently.
  • Timers: The microcontroller has timers that can be used for many different timing and timekeeping tasks. These timers can send alerts or start events at specific time intervals. This gives you precise control over tasks like PWM generation, measuring pulses, and other time-based tasks.
  • Interrupts: The microcontroller can be interrupted by both external and internal events. Interrupts let the microcontroller react quickly to events outside of it, so it doesn’t have to keep polling all the time. Interrupt service routines (ISRs) can be used to handle certain events and do the chores that go along with them.
  • The STM8S003K3T6C microcontroller’s timers and triggers make it much better at handling time-sensitive tasks, responding to outside events, and doing tasks in real time.


The STM8S003K3T6C microcontroller is a flexible and inexpensive way to make embedded systems work. With an 8-bit architecture, many peripheral interfaces, and a lot of memory, it is easy to handle, process data, and connect to other devices. It is very useful because it works well, uses little power, and is cheap. Explore what it can do, use its features to your advantage, and come up with innovative ideas. Contact ICRFQ to find out more or to place an order.

4.8/5 - (397 votes)
Kevin Chen