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STM8S903K3B6 - STMicroelectronics

Description: 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I²C

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STM8S903K3B6 - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - SDIP32_2026
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STM8S903K3B6 - STMicroelectronics  - 3D model - Dual-In-Line Packages - SDIP32_2026
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STM8S903K3B6 Details

  • Manufacturer Part Number:

    STM8S903K3B6

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    SDIP-32

  • Pin Count:

    32

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.15

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Has ADC:

    YES

  • Bit Size:

    8

  • Boundary Scan:

    YES

  • Clock Frequency-Max:

    16 MHz

  • DAC Channels:

    NO

  • DMA Channels:

    NO

  • JESD-30 Code:

    R-PDIP-T32

  • JESD-609 Code:

    e3

  • Length:

    27.94 mm

  • Number of I/O Lines:

    28

  • Number of Terminals:

    32

  • On Chip Program ROM Width:

    32

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • PWM Channels:

    YES

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SDIP

  • Package Equivalence Code:

    SDIP32,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE, SHRINK PITCH

  • Qualification Status:

    Not Qualified

  • RAM (bytes):

    1024

  • ROM (words):

    2048

  • ROM Programmability:

    FLASH

  • Seated Height-Max:

    5.08 mm

  • Speed:

    16 MHz

  • Supply Current-Max:

    4.75 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    3.3 V

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    1.778 mm

  • Terminal Position:

    DUAL

  • Width:

    10.16 mm

  • uPs/uCs/Peripheral ICs Type:

    MICROCONTROLLER

STM8S903K3B6 Frequently Asked Questions (FAQs)

  • The internal oscillator can operate up to 16 MHz, but the maximum clock frequency depends on the voltage and temperature range. Refer to the datasheet for specific details.
  • The watchdog timer is configured using the WWDG_CR register. Set the WWDG_CR[WDGA] bit to enable the watchdog timer, and set the WWDG_CR[WDGTB] bits to select the timeout period.
  • The NPOR and NPER bits control the flash memory protection. NPOR (Number of Pages to be Written) specifies the number of pages to be written, and NPER (Number of Pages to be Erased) specifies the number of pages to be erased.
  • To use the UART in asynchronous mode, set the USART_CR2[TE] bit to enable the transmitter, and set the USART_CR2[RE] bit to enable the receiver. Configure the baud rate using the USART_BRR register.
  • The IWDG (Independent Watchdog) timer is used to reset the microcontroller if the software becomes stuck or hangs. The WWDG (Window Watchdog) timer is used to monitor the software execution and reset the microcontroller if it does not receive a refresh signal within a specified time window.

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STM8S903K3B6 Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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