STM8S903K3U3

Series:	STM8S
Packaging:	Tray
Part Status:	Active
Core Processor:	STM8
Core Size:	8-Bit
Speed:	16MHz
Connectivity:	I²C, IrDA, LINbus, 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:	640 x 8
RAM Size:	1K x 8
Voltage - Supply (Vcc/Vdd):	2.95 V ~ 5.5 V
Data Converters:	A/D 7x10b
Oscillator Type:	Internal
Operating Temperature:	-40°C ~ 125°C (TA)
Package / Case:	32-UFQFN Exposed Pad
Supplier Device Package:	32-UFQFPN (5x5)
Base Part Number:	STM8S903

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Introduction to STM8S903K3U3

The STMicroelectronics STM8S903K3U3 microcontroller belongs to the STM8S family of 8-bit MCUs based on the enhanced STM8 core. It is a highly integrated 8-bit microcontroller powered by an STM8S core featuring 8 Kbytes of Flash memory, 5 Kbytes of RAM, 128 bytes of EEPROM, 20 general-purpose I/O lines in package LQFP48, and an independent watchdog timer. This microcontroller also includes 16-bit and 10-bit timers as well as various communication and interface peripherals, such as USART, SPI, I2C and I2S, as well as ADC, DAC, and PWM.

Application Field

The STM8S903K3U3 microcontroller can be used in a variety of applications, including automotive, white goods, consumer electronics, industrial, automation, and medical. In automotive, the STM8S903K3U3 can be used to control an engine monitor, electronic power steering, airbag system, accelerator control, body controller and much more. In white goods, it can be used for temperature control, temperature monitoring and door lock control. It is also capable of controlling washing and drying machines, refrigerators, and microwaves. In consumer electronics, STM8S903K3U3 is used for remote control systems, LCD backlight control, display control, and audio processing. In industrial applications, the microcontroller can be used for motor control, process control and automation. In medical, it is used to control medical treatments such as CPR, ventilation, and infusion pumping.

Working Principle

The STM8S903K3U3 Microcontroller is based on an STM8S core which is based on a Harvard architecture and uses a 48 MHz internal clock frequency. This architecture enables the microcontroller to easily fetch instructions from the Flash memory and quickly execute them. It also features several powerful timers, an independent watch dog timer and peripheral interfaces, such as USART, SPI, I2C and I2S, as well as ADC, DAC, and PWM. The microcontroller also has a power-saving sleep mode, reducing power consumption when the system is idle.The STM8S903K3U3 Microcontroller is programmed using the ST Visual Develop program, which is available for free. It is programmed using C language, but can also be programmed in assembly language. It also features a programming interface, which enables the microcontroller to be programmed directly from a PC, so that application and data can be loaded and saved easily. The microcontroller can also be programmed wirelessly through a Bluetooth interface.

Conclusion

The STM8S903K3U3 is an 8-bit microcontroller powered by an STM8S core with 8 Kbytes of Flash memory and 5 Kbytes of RAM. It has a wide range of applications in automotive, white goods, consumer electronics, industrial, automation and medical, and can be programmed using ST Visual Develop, C language and assembly language. It also features a number of powerful timers and peripheral interfaces such as USART, SPI, I2C and I2S, as well as ADC, DAC, and PWM. It also has a power-saving sleep mode, reducing power consumption when the system is idle.

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