Microcontrollers

Products (20,000+)

STM8S208C6T3 - 24MHz 8-Bit MCU, 32KB Flash | STMicroelectronics
STM8S208C6T3

STM8S208C6T3 - 24MHz 8-Bit MCU, 32KB Flash | STMicroelectronics

STMicroelectronics STM8S208C6T3 is an 8-bit STM8S performance-line microcontroller operating at 24 MHz with 32 KB of Flash program memory in a 48-pin LQFP package measuring 7 x 7 mm. It supports 3.3 V and 5 V operation and integrates a 10-bit ADC, timers, two UART interfaces, SPI, I²C, CAN, and EEPROM for compact embedded control designs. A microcontroller is a programmable semiconductor that combines a CPU core, nonvolatile program memory, data memory, and peripherals on one integrated circuit. The STM8S208 belongs to the STM8S20xxx performance line, where the 8-bit MCU family belongs to the broader microcontroller, embedded-processing, and semiconductor hierarchy. Its combination of communication peripherals and integrated analog conversion supports industrial controls, communications equipment, and compact consumer products. The STM8S208C6T3 differentiates itself through its 24 MHz operating frequency, 32 KB Flash organization, and extensive peripheral set. Two UART channels allow simultaneous serial communication, while SPI and I²C support expansion and sensor connectivity. The integrated CAN controller is particularly useful for embedded networking, and the 10-bit ADC permits direct analog-signal measurement without a separate converter in many designs. The device uses an 8-bit STM8 architecture and is intended for embedded systems requiring deterministic control across multiple standard interfaces. Its 32 KB Flash capacity provides room for application firmware, while integrated EEPROM supports nonvolatile parameter storage. The exact RAM capacity, operating-temperature limits, ADC conversion rate, timer channels, and electrical characteristics require confirmation in the manufacturer datasheet before a production design is released. Typical applications include CAN-connected industrial controllers, serial gateways, motor and valve control systems, compact instrumentation, and CAN bus accessories. In these systems, the MCU can sample analog inputs through the 10-bit ADC, execute control logic, and communicate with external sensors or actuators through UART, SPI, I²C, or CAN. This integration reduces the number of external components and simplifies firmware architecture. Design layouts should place decoupling capacitors close to the supply pins, preserve adequate ground-plane continuity beneath the LQFP, and route sensitive analog inputs away from high-current switching nodes. Firmware should also define reset, watchdog, communication timeout, and peripheral initialization behavior before enabling application-level control loops. This product summary consolidates the verified STM8S208C6T3 characteristics, interface capabilities, application guidance, and drop-in family options into an engineering-focused resource that extends beyond a basic distributor listing.

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STM8S208C6T6 - 24MHz 32KB Flash 8-Bit MCU | STMicroelectronics
STM8S208C6T6

STM8S208C6T6 - 24MHz 32KB Flash 8-Bit MCU | STMicroelectronics

STMicroelectronics STM8S208C6T6 is a 24 MHz, 8-bit STM8S performance-line microcontroller with 32 KB of Flash memory, 12 KB of RAM, and 6 KB of integrated EEPROM in a 48-LQFP 7 x 7 mm package. The device operates from 3 V to 5.5 V and provides 38 I/O ports for compact embedded control systems. A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, and peripherals on one chip. The STM8S208 belongs to the hierarchy of 8-bit microcontrollers, embedded controllers, and integrated circuits. It combines a high-performance 8-bit core with communication and timing resources suited to cost-sensitive industrial, consumer, communications, and appliance-control products. Key features include a 24 MHz maximum clock, 32 KB Flash organized as 32K x 8, 12 KB RAM, and a 10-bit ADC. Integrated peripherals include timers, two UARTs, SPI, I2C, and CAN. The 48-LQFP package provides 38 I/O pins, allowing a design to combine digital control with analog measurement and multiple serial interfaces without requiring a larger package. The STM8S208 platform is implemented around a high-performance 8-bit core and a peripheral set designed for embedded control. Its combination of 32 KB Flash and 12 KB RAM gives embedded firmware room for state-machine logic, communications routines, calibration data, and application control. The CAN interface is particularly useful for distributed equipment where a controller must exchange periodic data over a robust vehicle or industrial network. Typical applications include industrial controllers, communication modules, motor and appliance controls, instrumentation, CAN-connected equipment, and compact consumer products. For a CAN design, the MCU can handle local real-time control while the CAN peripheral manages framed network traffic. For instrumentation, the 10-bit ADC supports analog measurements, while UART, SPI, and I2C cover external sensors, displays, and configuration devices. Designers should verify the exact peripheral pin assignments, alternate-function multiplexing, clock configuration, decoupling requirements, and programming interface from the manufacturer datasheet before layout. The 3 V to 5.5 V operating range supports both 3.3 V and 5 V system rails, but each connected peripheral and external component must also tolerate the selected rail voltage. This page consolidates the verified 24 MHz, 32 KB Flash, 48-LQFP device information with same-family drop-in candidates, commercial purchasing guidance, and practical selection considerations that are not presented as one compact view in distributor listings.

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STM8S208C8T6 - 8-Bit 24MHz MCU, 64KB Flash | STMicroelectronics
STM8S208C8T6

STM8S208C8T6 - 8-Bit 24MHz MCU, 64KB Flash | STMicroelectronics

The STM8S208C8T6 is a high-performance 8-bit microcontroller from STMicroelectronics, part of the STM8S Performance line. It operates at a maximum frequency of 24 MHz and features 64 KB of Flash memory, 2 KB of EEPROM, and 4 KB of RAM. The device is housed in a 48-pin LQFP package (7x7 mm) and supports a supply voltage range of 2.95V to 5.5V, making it suitable for a wide range of industrial and consumer applications. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit central processing unit (CPU), memory, and peripherals. It is a type of embedded processor used to control electronic systems. In the hierarchy of computing devices, an 8-bit MCU is a subset of microcontrollers, which are a subset of embedded systems, which are a subset of electronic systems. The STM8S208C8T6 is a CISC (Complex Instruction Set Computer) architecture MCU, offering a rich instruction set and efficient code density. Key features of the STM8S208C8T6 include a 10-bit analog-to-digital converter (ADC) with up to 16 channels, multiple timers (including a 16-bit advanced control timer, a 16-bit general-purpose timer, and a basic timer), and a comprehensive set of communication interfaces: two UARTs, one SPI, one I2C, and one CAN interface. The device also includes an integrated EEPROM for data storage, a watchdog timer, and a low-power mode for energy-efficient operation. The STM8S208C8T6 is built on a high-performance 8-bit core with a three-stage pipeline, achieving up to 20 MIPS at 24 MHz. It features a flexible clock control with an internal RC oscillator, an external crystal oscillator, and a phase-locked loop (PLL) for frequency multiplication. The device supports in-circuit programming and debugging via the SWIM (Single Wire Interface Module) interface, simplifying firmware development and field updates. Typical applications include industrial control systems, home automation, consumer electronics, automotive body electronics, and power management. The CAN interface makes it particularly suitable for automotive and industrial networking applications where robust communication is required. The wide operating voltage range and low-power modes enable battery-powered and energy-harvesting designs. When designing with the STM8S208C8T6, ensure proper decoupling of the power supply pins with 100nF capacitors placed close to the VDD and VSS pins. The SWIM interface should be reserved for programming and debugging. For CAN applications, an external CAN transceiver (e.g., TJA1050) is required. The device is RoHS compliant and available in tray packaging.

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STM8S208CBT6 - 24MHz 8-Bit MCU, 128KB Flash | STMicroelectronics
STM8S208CBT6

STM8S208CBT6 - 24MHz 8-Bit MCU, 128KB Flash | STMicroelectronics

The STMicroelectronics STM8S208CBT6 is a 24 MHz performance-line 8-bit microcontroller with 128 KB of Flash program memory, integrated EEPROM, and a 48-pin LQFP package. It combines a 10-bit ADC, multiple timers, two UART interfaces, SPI, I²C, and CAN connectivity for compact embedded control systems operating from 3.3 V or 5 V. An 8-bit microcontroller is a microprocessor optimized for embedded control tasks such as sensing, actuator control, communications, and system supervision. The STM8S belongs to the STM8S performance line and combines an 8-bit CISC architecture with dedicated peripheral interfaces. This hierarchy places it above basic 8-bit controllers in performance while retaining the simple programming model and cost profile associated with embedded microcontrollers. The principal device characteristics are a 24 MHz operating frequency, 128 KB of Flash memory, and a 48-pin LQFP package. Integrated EEPROM supports nonvolatile parameter storage, while the 10-bit ADC provides a practical interface for analog sensors. Two UARTs support serial diagnostics or external-module communication, and the SPI and I²C interfaces allow connection to displays, sensors, memory, and other digital peripherals. CAN support makes the device relevant to distributed industrial and automotive-style control networks. The STM8S208CBT6 integrates communication and timing resources in one package, reducing the need for external interface controllers. Its timer resources support periodic measurement, pulse generation, motor-control-oriented timing, and input capture functions. The combination of CAN, two UART channels, SPI, and I²C permits multiple independent communication paths while retaining a single embedded controller. Exact SRAM capacity, EEPROM capacity, ADC conversion rates, and individual timer counts must be confirmed in the manufacturer datasheet before final design sign-off. Typical applications include industrial sensor nodes, building-control modules, motor and relay controllers, automotive accessories, CAN-connected equipment, and compact consumer products. Its 48-pin package provides more I/O and peripheral connectivity than smaller STM8 devices, making it appropriate when a design needs both communication breadth and a meaningful number of external connections. The trade-off is a larger footprint and board area than 20-pin or 32-pin alternatives. For PCB design, assign pins from the exact STM8S208CB datasheet rather than inferring them from a generic STM8 symbol. Preserve the device’s decoupling requirements, provide a clean analog reference for the ADC, and route communication interfaces away from switching nodes. Confirm clock configuration, boot behavior, programming access, and unused-pin handling before committing the layout to production. This product record combines the manufacturer’s STM8S208CB family information with package, interface, application, and substitution guidance. It highlights the engineering trade-offs among same-footprint STM8S options and provides practical design context for teams selecting a 24 MHz, 128 KB Flash 8-bit controller for CAN, serial, analog, and embedded-control designs.

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STM8S208MBT6B - 24MHz 128KB 8-Bit MCU | STMicroelectronics
STM8S208MBT6B

STM8S208MBT6B - 24MHz 128KB 8-Bit MCU | STMicroelectronics

STMicroelectronics STM8S208MBT6B is an 8-bit STM8 performance-line microcontroller with a 24 MHz clock, 128 KB of Flash program memory, and an 80-pin LQFP package. It operates from 3.3 V to 5 V and is designed for compact control systems that require more code storage and peripheral integration than entry-level 8-bit MCUs. An STM8 microcontroller is an 8-bit embedded controller built around the STM8 architecture, a general-purpose processing platform used for real-time control, monitoring, human-interface, and communication tasks. Within the product hierarchy, the STM8 belongs to the STM8S performance line, combining an 8-bit core, embedded Flash, on-chip peripherals, and an industrial-grade operating option in a surface-mount package. The principal features include a maximum 24 MHz operating frequency, 128 KB of Flash memory, and operation across 3.3 V and 5 V supply levels. The 80-pin LQFP package provides a large pin count for analog inputs, digital interfaces, timers, communication peripherals, and debug or programming connections. The B suffix identifies the STMicroelectronics ordering variant, while the T6 portion identifies the package, temperature, and qualification characteristics used in the ordering code. The STM8S208MB series combines a substantial 128 KB code area with the STM8S peripheral set. This architecture is useful when firmware must manage several input channels, timers, serial communication, and embedded control logic without relying on an external memory interface. The 24 MHz clock provides additional processing margin for interrupt-intensive routines and structured control software, while the integrated Flash permits a compact, self-contained application design. Typical uses include industrial controllers, building and automation equipment, appliance control panels, sensor acquisition systems, metering equipment, and compact embedded control modules. The 80-pin package is particularly useful when a design requires more I/O than smaller STM8 devices provide. Applications should still account for each peripheral's alternate-function mapping and the electrical limits stated in the manufacturer datasheet. For layout, place all decoupling capacitors close to the corresponding supply pins and route high-current or high-switching-node connections away from sensitive analog inputs. Confirm oscillator, reset, programming, and boot-strapping connections against the pin-description table. SWD programming is a practical integration choice when a dedicated programming connector is required. This page combines the confirmed STM8S208MBT6B specifications, package details, sourcing information, application guidance, and verified drop-in alternatives. It also distinguishes documented replacements from devices that require firmware, pinout, or peripheral validation before they can be treated as equivalent.

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STM8S208R8T6 - 8-Bit 24MHz 64KB Flash MCU | STMicroelectronics
STM8S208R8T6

STM8S208R8T6 - 8-Bit 24MHz 64KB Flash MCU | STMicroelectronics

The STM8S208R8T6 is a high-performance 8-bit microcontroller from STMicroelectronics' STM8S series, featuring a 24 MHz CPU core, 64KB of Flash program memory, and 6KB of RAM. It is housed in a 64-pin LQFP package (10x10 mm) and operates from a 3.3V or 5V supply, making it suitable for a wide range of industrial and consumer applications. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a CPU, memory, and peripherals. The STM8S series is a family of 8-bit MCUs from STMicroelectronics, positioned between low-end 8-bit devices and 32-bit ARM-based MCUs. It offers a cost-effective solution for applications requiring moderate processing power, rich peripherals, and low power consumption. The STM8S208R8T6 belongs to the performance line, which provides higher clock speeds and more memory compared to access line devices. Key features include a 24 MHz maximum CPU frequency with 0 wait states, 64KB of Flash memory, 6KB of RAM, and 2KB of EEPROM. It integrates a 10-bit ADC with up to 16 channels, multiple 16-bit timers, two UARTs, SPI, I2C, and a CAN interface. The device also includes a watchdog timer, brown-out reset, and low-power modes, enhancing reliability and energy efficiency. The STM8S208R8T6 is built on ST's advanced 8-bit core architecture, which delivers up to 20 MIPS at 24 MHz. It features a Harvard architecture with separate instruction and data buses, allowing simultaneous instruction fetch and data access. The integrated EEPROM enables non-volatile data storage without external components, and the CAN interface supports robust communication in automotive and industrial networks. Typical applications include industrial control systems, home appliances, automotive body electronics, and communication modules. The CAN interface makes it ideal for automotive networks, while the rich timer and ADC peripherals suit motor control and sensor interfacing. The wide operating voltage range (2.95V to 5.5V) ensures compatibility with both 3.3V and 5V logic systems. When designing with this MCU, ensure proper decoupling of the power supply and a stable clock source. The device supports multiple clock sources, including an internal RC oscillator and external crystal. For low-power applications, utilize the halt and active-halt modes to reduce current consumption. The CAN interface requires an external transceiver, such as the TJA1050, for physical layer connectivity.

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STM8S208RBT3 - 24MHz 128KB 8-Bit MCU | STMicroelectronics
STM8S208RBT3

STM8S208RBT3 - 24MHz 128KB 8-Bit MCU | STMicroelectronics

The STMicroelectronics STM8S208RBT3 is an 8-bit STM8S performance-line microcontroller with a 24 MHz CPU, 128 KB of Flash program memory, integrated EEPROM, a 10-bit ADC, and communication peripherals including two UARTs, SPI, I²C, and CAN. The device is supplied in a 64-LQFP package measuring 10 x 10 mm and is intended for compact embedded-control systems. An 8-bit microcontroller is a programmable semiconductor containing a processor core, memory, and integrated peripherals on one device. STM8 devices belong to the broader microcontroller and embedded-processor hierarchy, combining an 8-bit CISC-oriented architecture with deterministic real-time control peripherals. The STM8S208 performance line is positioned above smaller STM8 families by offering more Flash memory and a broad selection of communication and timing resources. Key features of the STM8S208RBT3 include operation at up to 24 MHz, 128 KB of Flash, integrated EEPROM, a 10-bit analog-to-digital converter, multiple timers, 38 I/O ports, and support for UART, SPI, I²C, and CAN communication. These resources allow the MCU to consolidate several discrete functions on a single device and reduce component count in industrial controls, communications equipment, access systems, and embedded measurement products. The STM8S architecture supports a supply range of 3 V to 5.5 V according to the verified distributor data. Its integrated EEPROM provides nonvolatile data storage without requiring an external memory chip, while the 10-bit ADC supports analog sensor acquisition. Two UART channels enable asynchronous serial connectivity, SPI supports higher-speed peripherals, I²C supports external sensors and EEPROMs, and CAN supports industrial network nodes. Typical applications include industrial automation controllers, CAN-connected equipment, motor and relay control, environmental monitoring, access-control terminals, serial data acquisition, and compact consumer appliances. The 64-LQFP package provides enough I/O for external sensors, displays, transceivers, and actuators while remaining practical for leaded PCB assembly and prototype development. Designers should verify the exact pin assignment, electrical limits, oscillator requirements, reset circuit, and decoupling recommendations against the STM8S208RB manufacturer documentation before layout. The 3 V to 5.5 V supply requirement means external interface levels and sensor voltages must remain compatible with the MCU pins used. This product page consolidates verified manufacturer and distributor specifications, same-package replacement guidance, interface coverage, and practical engineering considerations into one reference for engineers evaluating the STM8S208RBT3.

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STM8S208RBT6 - 8-Bit 24MHz 128KB Flash MCU | STMicroelectronics
STM8S208RBT6

STM8S208RBT6 - 8-Bit 24MHz 128KB Flash MCU | STMicroelectronics

STMicroelectronics STM8S208RBT6 is an 8-bit STM8S performance-line microcontroller operating at 24MHz with 128KB of Flash program memory and up to 20MIPS throughput. It is supplied in a 64-pin LQFP package and supports 3.3V and 5V operation according to the verified product listings. Integrated peripherals include a 10-bit ADC, timers, two UARTs, SPI, I2C, and CAN. An STM8S microcontroller belongs to the 8-bit embedded-control segment of the semiconductor hierarchy. These devices combine a compact CISC core, embedded nonvolatile memory, analog conversion, serial communication, and timing peripherals in one package. They are used where deterministic control, low system complexity, and economical embedded intelligence are more important than the processing power and memory bandwidth of a 32-bit Cortex-M MCU. The STM8S208RBT6 combines 128KB Flash with a 24MHz clock, delivering 20MIPS as identified by Mouser. Its integrated 10-bit ADC supports measurements without a separate converter, while two UARTs, SPI, I2C, and CAN provide several paths for sensors, displays, industrial networks, and external controllers. This interface density makes the device suitable for compact industrial controllers, motor-control helpers, communication gateways, and embedded measurement products. As an STM8S20xxx performance-line part, the device belongs to a family offered from 32KB through 128KB Flash. The selected 128KB configuration provides more program space than lower-density variants while preserving the familiar STM8S peripheral and software environment. This supports protocol stacks, application logic, logging, and parameter handling in a single embedded controller. Typical applications include CAN-connected industrial nodes, sensor acquisition and control, motor or actuator supervision, and compact communication equipment. The CAN interface is valuable when the design must participate in a bus network, while the ADC and multiple serial interfaces support local sensing. Designers should still verify timing, peripheral availability, pin multiplexing, and memory requirements in the manufacturer documentation before finalizing firmware. The principal design consideration is that software compatibility does not guarantee an unconditional drop-in replacement. Firmware startup code, interrupt vectors, peripheral configuration, clock settings, and PCB pad assignments must all be checked. For new designs, the 128KB Flash capacity and broad mixed-signal connectivity can reduce external components, but the 64-pin LQFP footprint requires adequate board area and careful routing of analog and communication signals. This product page combines verified manufacturer, distributor, and cross-reference information with practical design guidance. It helps engineers assess the STM8S208RBT6, compare documented same-family options, understand its peripherals, and plan sourcing and PCB integration without presenting unsupported electrical values.

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STM8S208S6T3C 8-Bit 24MHz 32KB MCU | STMicroelectronics
STM8S208S6T3C

STM8S208S6T3C 8-Bit 24MHz 32KB MCU | STMicroelectronics

STMicroelectronics STM8S208S6T3C is an 8-bit STM8S performance-line microcontroller operating at 24 MHz, with 32 KB of Flash program memory and a 44-pin LQFP package measuring 10 mm by 10 mm. It belongs to the STM8S20xxx family, a compact platform for embedded control designs that need moderate processing speed, integrated embedded control functions, and a broad set of GPIO and communication peripherals. What is an 8-bit MCU? An MCU is a semiconductor device that combines a processor core, program memory, data memory, GPIO, and embedded peripherals in one package. In the broader hierarchy, a microcontroller is a type of embedded processor and system-on-chip device. The STM8S208S6T3C uses an 8-bit architecture, making it suitable for cost-sensitive products where control logic, sensor monitoring, user interfaces, and communication tasks must be handled without a high-end application processor. The STM8S208S6T3C is identified as part of the STM8S performance line, whose members provide from 32 KB to 128 KB of Flash program memory according to the manufacturer product-page search result. At 24 MHz, the device provides a practical balance between processing capability and system simplicity. Its 44-LQFP package exposes a larger pin count than small-outline packages, supporting more peripheral connections and leaving additional I/O options for compact control boards. Typical applications for this MCU include industrial control and automation modules, consumer appliances, sensor and monitoring equipment, communication interfaces, motor-control support systems, and compact embedded products. The 8-bit processing core is especially effective for supervisory control tasks, state machines, protocol handling, and discrete I/O management where a higher-complexity processor would add unnecessary cost or power consumption. Designers should use the STM8S208S6T3C datasheet pin-description table when assigning PCB tracks and should confirm the required external clock, reset, programming, decoupling, and peripheral connections. The package and suffix code also determine ordering and assembly details, so an exact mechanical and pinout comparison is required before substituting a related STM8S device. This product summary combines the verified manufacturer family information, distributor package and memory details, lifecycle-relevant sourcing information, and practical engineering guidance to support MCU selection, schematic review, PCB planning, and procurement evaluation.

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STM8S208S6T6C - 24MHz 32KB 8-Bit MCU | STMicroelectronics
STM8S208S6T6C

STM8S208S6T6C - 24MHz 32KB 8-Bit MCU | STMicroelectronics

STMicroelectronics STM8S208S6T6C is an 8-bit performance-line microcontroller operating at up to 24 MHz, with 32 KB of Flash program memory organized as 32K x 8 and supplied in a 44-pin LQFP package measuring 10 x 10 mm. The device belongs to the STM8S20xxx family, which combines an economical embedded-control architecture with integrated communication and peripheral resources for compact embedded systems. An 8-bit microcontroller is a programmable semiconductor integrated circuit that executes instructions from nonvolatile Flash memory and uses RAM for working data. Within the product hierarchy, this device is an MCU, an embedded controller, a microprocessor-family semiconductor, and a member of the STMicroelectronics STM8 performance line. Its 24 MHz operating speed supports responsive control loops and practical handling of multiple peripheral functions while retaining the simplicity of an 8-bit architecture. Key characteristics include a maximum CPU frequency of 24 MHz, 32 KB of Flash memory, and 6 KB of SRAM. The STM8S208S6T6C also provides integrated CAN connectivity according to the product comparison information, making it suitable for distributed industrial and automotive control systems. A 44-LQFP package provides a conventional surface-mount solution with numbered leads and a body size of 10 x 10 mm. The STM8S20xxx performance line targets embedded applications requiring more memory and peripheral capability than entry-level devices while retaining the resource profile of an 8-bit MCU. The manufacturer identifies this family as offering configurations from 32 KB through 128 KB of Flash program memory. Device programming and peripheral configuration are handled through the STM8 embedded ecosystem, which supports firmware development, debugging, and production programming workflows. Typical uses include CAN-connected industrial controllers, automotive subsystems, compact automation equipment, sensor hubs, and general-purpose embedded products. In each case, the 24 MHz execution rate and 32 KB Flash allocation provide a practical balance between control performance, firmware capacity, and component cost. Integrated CAN is particularly useful where the controller must exchange data with distributed nodes rather than operate only as a stand-alone device. PCB implementation should follow the manufacturer pinout and land-pattern guidance, including correct decoupling placement and a defined programming interface. Because MCU behavior depends on firmware, clock configuration, peripheral initialization, and brownout behavior, the relevant STM8S208 series reference manual and device datasheet should be treated as the authoritative sources during schematic review and firmware bring-up. This page combines the exact orderable part information, package and memory characteristics, replacement guidance, and practical design considerations into an engineering-focused selection resource. It also distinguishes verified drop-in ordering variants from parts that merely belong to the broader STM8 ecosystem but require PCB or firmware changes.

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STM8S903F3M3 - 16MHz 8-Bit MCU | STMicroelectronics
STM8S903F3M3

STM8S903F3M3 - 16MHz 8-Bit MCU | STMicroelectronics

STMicroelectronics STM8S903F3M3 is an 8-bit STM8S-series microcontroller rated for operation up to 16 MHz, with 8 KB of Flash program memory and 1 KB of RAM in a 20-pin SOIC package. The device also includes 640 bytes of true data EEPROM, a 10-bit ADC, two timers, UART, SPI, and I2C interfaces. Its operating supply range is 2.95 V to 5.5 V, while 16 GPIO pins support embedded control and communication tasks. An 8-bit microcontroller is a compact embedded processor designed to execute firmware, read sensors, control outputs, and manage communication interfaces. The STM8S903F3 belongs to the broader STM8 embedded and industrial-control ecosystem. Compared with application-specific logic, a microcontroller consolidates processing, memory, analog measurement, timing, and serial communications into one device, reducing board area and simplifying product maintenance. The 16 MHz operating frequency provides useful processing headroom for real-time control, while 8 KB of Flash stores application code and 640 bytes of EEPROM preserve frequently changed parameters such as calibration values or configuration data. The 10-bit ADC supports analog sensor acquisition, and the two timers help implement periodic tasks, pulse measurement, motor timing, or basic PWM-related functions. UART, SPI, and I2C expand the available connection options for external controllers, sensors, displays, and transceivers. The STM8S core combines an 8-bit architecture with integrated peripheral blocks, allowing firmware to handle sensing and communications without separate interface controllers. Two supply rails—VDD and VDDA—support the digital and analog sections, while the 2.95 V to 5.5 V operating range accommodates common embedded supply conditions. The part includes low-power, power-on, and power-down reset behavior described for the STM8S903F3 family. Typical uses include industrial control modules, compact instrumentation, motor-control front ends, metering equipment, IoT sensor nodes, and cost-sensitive consumer or automotive electronics. The UART is useful for external configuration or diagnostics, SPI supports faster peripheral communication, and I2C accommodates low-speed sensors and memory devices. PCB design should account for analog and digital supply decoupling, stable grounding, and programming access. Place the required input and output capacitors close to their associated pins, route analog inputs away from fast switching nodes, and use a clean ground strategy to reduce ADC noise. Confirm the exact pin function and package dimensions against the manufacturer datasheet before layout release. This page consolidates the manufacturer specifications, interface capabilities, sourcing guidance, and design considerations engineers need to evaluate the STM8S903F3M3 for a new embedded design.

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STM8S903F3M6 - 16MHz 8KB 8-Bit MCU | STMicroelectronics
STM8S903F3M6

STM8S903F3M6 - 16MHz 8KB 8-Bit MCU | STMicroelectronics

The STMicroelectronics STM8S903F3M6 is an 8-bit STM8S-series microcontroller operating at 16 MHz, with 8 KB of Flash memory, 16 I/O ports, and a 20-SOIC package. According to the verified distributor data, it is available in a 20-SO package and is identified as an active, RoHS-compliant device with a 2.95 V to 5.5 V supply-voltage range. What is an 8-bit microcontroller? An MCU is a semiconductor device that combines a processor core, program memory, data memory, and peripherals on one integrated circuit. The STM8S903F3M6 belongs to the 8-bit MCU -> embedded microcontroller -> semiconductor hierarchy and is intended for compact control, measurement, and communication systems where a dedicated processor, memory, and serial interfaces are required. Verified specifications identify 8 KB of Flash memory, 1 KB of RAM, 640 bytes of EEPROM, a 10-bit ADC, two timers, UART, SPI, and I²C. These peripherals make the device suitable for sensor acquisition, actuator control, industrial instrumentation, and low-cost embedded products. The 16 MHz clock provides the processing headroom needed for basic control loops and serial data handling, although the verified data does not specify the complete peripheral timing or ADC accuracy. The STM8S903F3M6 uses a 20-SOIC package, also described as a 0.295-inch, 7.50 mm-width SOP package in the verified distributor data. The SOIC outline is a surface-mount package with gull-wing leads, making it suitable for conventional PCB assembly and prototype-to-production transfer. The package pinout and exposed thermal-pad details are not included in the supplied verified data, so the pinout is reported as null rather than inferred. Typical applications include compact industrial controllers, low-power sensor nodes, simple motor or relay-control boards, data-acquisition modules, UART-to-digital bridges, and small SPI or I²C peripheral boards. The STM8 family can be paired with external sensors and communication transceivers, while the integrated ADC supports analog measurement. Final firmware support should be confirmed with the applicable STMicroelectronics development tools and device documentation. For PCB design, preserve the manufacturer's recommended decoupling and grounding layout, and verify all peripheral pins, reset behavior, clock requirements, and package dimensions against the official datasheet before production. This page combines verified distributor specifications, package data, sourcing information, and engineering-oriented application guidance without treating unverified details as guaranteed specifications.

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STM8S903F3P3 - 16MHz 8-Bit MCU, 8KB Flash | STMicroelectronics
STM8S903F3P3

STM8S903F3P3 - 16MHz 8-Bit MCU, 8KB Flash | STMicroelectronics

The STMicroelectronics STM8S903F3P3 is an 8-bit STM8S-series microcontroller with a 16 MHz core, 8 KB of Flash program memory, 1 KB of RAM, and 640 bytes of EEPROM in a 20-pin TSSOP package. Its integrated peripherals include a 10-bit ADC, two timers, UART, SPI, and I2C interfaces. An 8-bit microcontroller is a compact embedded-processing component designed for control-oriented products that monitor inputs, operate actuators, and communicate with external devices. The STM8S product type belongs to the hierarchy of microcontroller, embedded processor, semiconductor, and integrated-circuit devices. The STM8S903 access line combines an economical 8-bit architecture with integrated data EEPROM and conventional serial interfaces, making it suitable for compact industrial controllers, measurement instruments, and embedded accessories. The principal system benefits are 8 KB of nonvolatile program storage, 1 KB of volatile data memory, and 640 bytes of true data EEPROM. The 10-bit ADC supports analog measurements, while two timers support timing, pulse generation, and basic motor or LED control functions. UART, SPI, and I2C connectivity allows the MCU to communicate with sensors, displays, transceivers, and external nonvolatile memories without requiring a separate interface controller. The STM8S903F3 operates from a 3.3 V or 5 V supply and is specified for temperatures from -40°C to +125°C. Its 20-pin TSSOP package supports compact surface-mount assemblies while exposing the core control, analog, timing, and communication functions. The STM8S903F3 family combines an 8-bit CPU with a mixed-signal peripheral set designed for cost-sensitive embedded systems that need deterministic control and moderate communication bandwidth. Typical applications include industrial control panels, digital thermometers, environmental monitoring stations, compact motor controllers, sensor-interface modules, and communication-enabled embedded accessories. In each case, the MCU can acquire analog inputs, execute control logic, store operating parameters, and update external peripherals through its integrated communication interfaces. A 16 MHz operating rate supports responsive polling and control without a higher-complexity processor core. When designing the PCB, reserve the 20-pin TSSOP footprint and route power, ground, programming signals, reset, and decoupling according to the manufacturer pin-description table. Place the supply bypass capacitor close to the device and use the pin table when assigning alternate-function signals. Firmware and peripheral configuration should be checked against the STM8S903F3 datasheet and the STM8 toolchain documentation before production release. This product record combines manufacturer specifications, orderable-part information, package details, application guidance, and a structured drop-in comparison. It is intended to help engineers evaluate the STM8S903F3P3 for embedded control designs and to request current commercial availability through the page's Request a Quote form.

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STM8S903F3P6 - 16MHz 8-Bit MCU | STMicroelectronics
STM8S903F3P6

STM8S903F3P6 - 16MHz 8-Bit MCU | STMicroelectronics

STMicroelectronics STM8S903F3P6 is an 8-bit STM8S-series microcontroller operating at up to 16 MHz, with 8 KB of Flash program memory and a 20-TSSOP package. The device operates from 2.95 V to 5.5 V and provides 1 KB of RAM, 640 bytes of true EEPROM, a 10-bit ADC, two timers, UART, SPI, and I²C connectivity. It is designed for compact embedded-control systems requiring mixed analog and digital functions without a higher-cost 32-bit MCU. An 8-bit microcontroller is a programmable semiconductor containing a processor core, nonvolatile program memory, data memory, and integrated peripherals. Within the hierarchy of embedded semiconductors, an MCU is below a microprocessor in processing capability but combines greater control simplicity with lower system cost and power use. The STM8S903F3 belongs to STMicroelectronics’ STM8S access line and targets cost-sensitive consumer, appliance, and industrial-control applications. Key features include 8 KB of Flash, 1 KB of RAM, and 640 bytes of EEPROM, allowing firmware, working data, and nonvolatile parameters to be consolidated in one device. The 10-bit ADC supports analog measurement, while two timers support timing and periodic control functions. UART, SPI, and I²C interfaces cover serial communication, sensor connectivity, and expansion to external ICs. The 2.95 V to 5.5 V supply range accommodates both 3.3 V and 5 V system environments. The STM8S903F3 architecture combines an 8-bit STM8 core with dedicated peripheral resources and true data EEPROM. Its 16 MHz maximum clock rate provides sufficient processing bandwidth for control loops, user-interface scanning, communications, and low-complexity signal processing. At the same time, the 20-TSSOP package limits board footprint, making it practical for compact embedded products. Detailed pin-level functions and electrical limits should be confirmed against the manufacturer datasheet before layout release. Typical uses include appliance control, small industrial controllers, digital input and output modules, sensor interfaces, compact timers, and embedded communication nodes. The STM8S903F3P6 is particularly suitable when a design requires several serial interfaces alongside analog sensing but does not justify the software complexity or cost of a 32-bit MCU. Its integrated EEPROM is useful for retaining configuration data, calibration values, or counters without an external memory component. Designers should confirm the exact 20-TSSOP land pattern, pin multiplexing, oscillator connections, reset implementation, and peripheral pin assignments using the official datasheet. Decoupling and signal-integrity layout should follow the manufacturer recommendations, while software validation should include startup, clock configuration, ADC accuracy, timer behavior, and communications under expected bus loading. The broad 2.95 V to 5.5 V range does not remove the need to verify every peripheral and I/O condition at the minimum and maximum system voltages.

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STM8S903F3P6TR - 16MHz 8-Bit MCU | STMicroelectronics (Tape & Reel)
STM8S903F3P6TR

STM8S903F3P6TR - 16MHz 8-Bit MCU | STMicroelectronics (Tape & Reel)

STMicroelectronics STM8S903F3P6TR is an 8-bit STM8S-series microcontroller operating at up to 16 MHz, with 8 KB of Flash program memory and a 20-TSSOP package. The device operates from 2.95 V to 5.5 V and provides 1 KB of RAM, 640 bytes of true EEPROM, a 10-bit ADC, two timers, UART, SPI, and I²C connectivity. It is designed for compact embedded-control systems requiring mixed analog and digital functions without a higher-cost 32-bit MCU. An 8-bit microcontroller is a programmable semiconductor containing a processor core, nonvolatile program memory, data memory, and integrated peripherals. Within the hierarchy of embedded semiconductors, an MCU is below a microprocessor in processing capability but combines greater control simplicity with lower system cost and power use. The STM8S903F3 belongs to STMicroelectronics’ STM8S access line and targets cost-sensitive consumer, appliance, and industrial-control applications. Key features include 8 KB of Flash, 1 KB of RAM, and 640 bytes of EEPROM, allowing firmware, working data, and nonvolatile parameters to be consolidated in one device. The 10-bit ADC supports analog measurement, while two timers support timing and periodic control functions. UART, SPI, and I²C interfaces cover serial communication, sensor connectivity, and expansion to external ICs. The 2.95 V to 5.5 V supply range accommodates both 3.3 V and 5 V system environments. The STM8S903F3 architecture combines an 8-bit STM8 core with dedicated peripheral resources and true data EEPROM. Its 16 MHz maximum clock rate provides sufficient processing bandwidth for control loops, user-interface scanning, communications, and low-complexity signal processing. At the same time, the 20-TSSOP package limits board footprint, making it practical for compact embedded products. Detailed pin-level functions and electrical limits should be confirmed against the manufacturer datasheet before layout release. Typical uses include appliance control, small industrial controllers, digital input and output modules, sensor interfaces, compact timers, and embedded communication nodes. The STM8S903F3P6TR is particularly suitable when a design requires several serial interfaces alongside analog sensing but does not justify the software complexity or cost of a 32-bit MCU. Its integrated EEPROM is useful for retaining configuration data, calibration values, or counters without an external memory component. Designers should confirm the exact 20-TSSOP land pattern, pin multiplexing, oscillator connections, reset implementation, and peripheral pin assignments using the official datasheet. Decoupling and signal-integrity layout should follow the manufacturer recommendations, while software validation should include startup, clock configuration, ADC accuracy, timer behavior, and communications under expected bus loading. The broad 2.95 V to 5.5 V range does not remove the need to verify every peripheral and I/O condition at the minimum and maximum system voltages.

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STM8S903K3B6 - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics
STM8S903K3B6

STM8S903K3B6 - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics

STMicroelectronics STM8S903K3B6 is an 8-bit STM8S-series microcontroller with a 16 MHz maximum clock, 8 KB Flash program memory, 1 KB RAM, 640 bytes EEPROM, and a 10-bit ADC in a 32-pin SDIP package. The device also provides 16 I/O ports, two timers, UART, SPI, and I²C interfaces for compact embedded control systems. Its operating supply range is 2.95 V to 5.5 V. A microcontroller is a programmable integrated circuit containing a CPU core, memory, and peripherals that execute firmware and interact with external hardware. The STM8S903K3 belongs to the STM8 access-line family, which combines an 8-bit core, integrated nonvolatile data EEPROM, and mixed-signal peripherals in a relatively small package. It is intended for cost-sensitive embedded products that need more capability than a basic logic controller without adopting a higher-performance 32-bit MCU. The STM8S903K3B6 provides 8 KB of Flash for program storage, 1 KB of RAM for working data, and 640 bytes of true EEPROM for parameter retention. Its 10-bit ADC supports analog measurements, while two timers support timing and periodic control functions. UART, SPI, and I²C provide three distinct communication paths for external sensors, actuators, displays, and serial peripherals. The 16 MHz clock enables predictable execution of control loops and interrupt-driven firmware. STMicroelectronics describes the STM8S903K3/F3 access line as an 8-bit MCU family offering 8 Kbyte Flash program memory and integrated true data EEPROM. The target device is identified by the STM8S903K3 ordering code and B6 package/temperature suffix. The verified product information specifies a 2.95 V to 5.5 V supply range, a 16 MHz clock, and an operating lifecycle status of ACTIVE. Typical uses include compact industrial controllers, sensor-interface modules, appliance controls, communication transceivers, low-cost instrumentation, and general-purpose embedded products. The combination of ADC, timers, EEPROM, and serial interfaces permits a single controller to acquire analog data, execute deterministic timing functions, preserve calibration values, and communicate with a host or peripheral device. Designers should budget PCB area for the 32-pin SDIP footprint and confirm that the selected schematic uses only functions and pin assignments supported by the exact STM8S903K3 variant. Power-supply decoupling, programming access, reset behavior, and analog-input conditioning should be validated against the manufacturer datasheet before layout release. Because the search excerpts do not provide the complete pin map, a new design must not infer pin assignments from a similarly named STM8 device. This page consolidates verified manufacturer and distributor specifications, lifecycle information, interface capabilities, and package details with selection guidance and practical design cautions. It also distinguishes confirmed same-package alternatives from candidates that require additional engineering verification, helping engineers avoid treating broadly similar MCUs as automatic drop-in replacements.

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STM8S903K3T6 - 8-bit MCU, 8KB Flash, 16MHz | STMicroelectronics
STM8S903K3T6

STM8S903K3T6 - 8-bit MCU, 8KB Flash, 16MHz | STMicroelectronics

The STM8S903K3T6 is an 8-bit microcontroller from STMicroelectronics' STM8S access line, featuring 8 Kbytes of Flash program memory, 1 Kbyte of RAM, and 640 bytes of true data EEPROM. It operates at a clock speed of 16 MHz and is supplied in a 32-pin LQFP package, offering a compact solution for a wide range of embedded control applications. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit central processing unit (CPU), memory, and programmable input/output peripherals. It is the foundational building block in the hierarchy of embedded systems, sitting below 16-bit and 32-bit MCUs in processing power but offering lower cost, lower power consumption, and simpler programming. The STM8S903K3T6 belongs to the STM8S family, which is designed for general-purpose industrial and consumer applications, bridging the gap between simple 8-bit controllers and more complex 32-bit processors. Key features of the STM8S903K3T6 include a 10-bit analog-to-digital converter (ADC) with up to 7 multiplexed channels, two 16-bit timers, a UART for serial communication, an SPI interface, and an I2C interface. The device also integrates a true data EEPROM with read-while-write capability, enabling non-volatile data storage without external components. The supply voltage range of 2.95V to 5.5V allows operation from standard 3.3V and 5V power rails, making it versatile for mixed-voltage systems. The STM8S903K3T6 is built on ST's advanced 8-bit core architecture, which delivers up to 16 MIPS at 16 MHz, providing efficient execution of control algorithms. The integrated EEPROM and robust clock management, including an internal RC oscillator and optional external crystal, simplify system design by reducing external component count. The device also features low-power modes, including Active-Halt and Halt modes, to minimize energy consumption in battery-powered applications. Typical applications include industrial control systems, home automation, consumer electronics, and automotive body electronics. The combination of analog and digital peripherals, along with the wide operating voltage range, makes it suitable for sensor interfacing, motor control, and communication bridging tasks. The 32-pin LQFP package provides a good balance between I/O count and board space, supporting compact PCB layouts. When designing with the STM8S903K3T6, ensure proper decoupling of the VDD and VDDA pins with 100nF capacitors placed close to the device. The internal RC oscillator is accurate to ±1% over temperature, but for applications requiring precise timing, an external crystal can be connected to the OSC_IN and OSC_OUT pins. The device's EEPROM endurance is rated for 100,000 write/erase cycles, making it suitable for frequent data logging applications.

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STM8S903K3T6C - 16MHz 8-Bit MCU, 8KB Flash | STMicroelectronics
STM8S903K3T6C

STM8S903K3T6C - 16MHz 8-Bit MCU, 8KB Flash | STMicroelectronics

STMicroelectronics STM8S903K3T6C is a 16 MHz 8-bit microcontroller with up to 8 KB of Flash program memory, 1 KB of RAM, and 640 bytes of true data EEPROM in a 32-pin LQFP package. It integrates a 10-bit ADC, two timers, UART, SPI, and I²C interfaces for compact embedded control applications. An 8-bit microcontroller is a programmable semiconductor that executes instructions from embedded Flash memory and controls peripherals through dedicated input/output ports. The STM8S family uses an advanced Harvard-architecture core with an extended instruction set and a three-stage pipeline. This places the STM8S903K3 in the broader hierarchy of microcontroller, embedded processor, semiconductor, and electronic-control systems. Principal features include 16 MHz maximum clock frequency, a 10-bit analog-to-digital converter, two timers, and serial connectivity covering UART, SPI, and I²C. The device also provides true EEPROM for parameters that must survive power removal. Its 2.95 V to 5.5 V operating range supports both conventional 3.3 V and 5 V embedded systems, while 16 I/O ports provide flexible connections to sensors, displays, actuators, and interface transceivers. The STM8S903K3/F3 access-line architecture combines a compact control core with integrated communication peripherals. A three-stage pipeline supports efficient instruction execution, while the Harvard architecture separates program-memory access from data-memory access. Integrated EEPROM also avoids requiring an external nonvolatile memory device for small quantities of calibration, configuration, or serial-number data. Typical applications include small industrial controllers, sensor nodes, appliance interfaces, compact instrumentation, communication modules, and low-cost embedded products. The 10-bit ADC supports analog measurement, the timers support timing and periodic-output tasks, and UART, SPI, and I²C permit connection to displays, sensors, memory devices, transceivers, and other digital peripherals without excessive external glue logic. Designers should verify the exact peripheral mapping, alternate-function selection, clock configuration, and pin multiplexing in the manufacturer pin-description table before finalizing a PCB. Component values associated with the ADC, oscillator, reset, and power rails must follow the datasheet reference circuit, and unused pins should be configured to prevent unwanted inputs from increasing current consumption. This product guide combines the manufacturer’s device description with application-oriented engineering guidance, a parameter comparison, and practical design notes. It also provides sourcing information for requesting a quotation through the XAIPART Request a Quote form, including current lead-time and availability confirmation.

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STM8S903K3U3 - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics
STM8S903K3U3

STM8S903K3U3 - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics

The STMicroelectronics STM8S903K3U3 is an 8-bit STM8S access-line microcontroller with a 16 MHz clock, 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes of true data EEPROM. It also provides a 10-bit ADC, two timers, UART, SPI, and I2C interfaces in a 32-pin UFQFPN package measuring 5 x 5 mm. An 8-bit microcontroller is a compact embedded-computing device that executes programmed instructions, reads inputs, controls outputs, and manages communication interfaces. Within the semiconductor hierarchy, the STM8S903K3U3 belongs to the STM8S family, the STM8 access line, the broader 8-bit microcontroller class, and the wider embedded-processing and power-management ecosystem. Its combination of mixed signal and serial connectivity makes it suitable for compact control systems rather than high-compute applications. The device provides 8 Kbyte of Flash for program storage, 1 Kbyte of RAM for working memory, and 640 bytes of true data EEPROM for parameters that must retain their values. The 10-bit ADC supports analog-to-digital measurements, while two timers support timing, periodic events, and basic input-capture or output-compare functions. UART, SPI, and I2C interfaces enable connection to sensors, displays, transceivers, memory devices, and other embedded peripherals. The operating supply range is 2.95 V to 5.5 V, supporting both 3.3 V and 5 V system architectures. Its 16 MHz maximum clock provides adequate execution bandwidth for control loops, protocol handling, and sequential logic. The device exposes 16 I/O ports and is offered in a compact 32-pin no-lead package with a 0.65 mm pitch, reducing board area while retaining a substantial pin count for mixed-signal and serial-interface designs. Typical applications include industrial sensor nodes, compact motor controllers, digital control panels, appliance interfaces, LED-control boards, and low-cost serial bridges. The STM8S903K3U3 is particularly useful where a design needs local analog measurement, nonvolatile configuration storage, and multiple serial buses without adopting a higher-pin-count or higher-cost microcontroller. PCB design should place the decoupling capacitor adjacent to the supply pins and route analog, digital, and clock signals with appropriate separation. Confirm the exact exposed-pad, ground, reset, clock, and I/O assignments from the manufacturer pinout and layout guidance before fabrication. This product page combines the manufacturer’s device information with a practical feature summary, application guidance, verified specifications, sourcing information, and a conservative replacement assessment that distinguishes true pin-compatible choices from merely similar devices.

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STM8S903K3U3TR - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics (Tape & Reel)
STM8S903K3U3TR

STM8S903K3U3TR - 16MHz 8-Bit MCU with 8KB Flash | STMicroelectronics (Tape & Reel)

The STMicroelectronics STM8S903K3U3TR is an 8-bit STM8S access-line microcontroller with a 16 MHz clock, 8 Kbyte Flash program memory, 1 Kbyte RAM, and 640 bytes of true data EEPROM. It also provides a 10-bit ADC, two timers, UART, SPI, and I2C interfaces in a 32-pin UFQFPN package measuring 5 x 5 mm. An 8-bit microcontroller is a compact embedded-computing device that executes programmed instructions, reads inputs, controls outputs, and manages communication interfaces. Within the semiconductor hierarchy, the STM8S903K3U3TR belongs to the STM8S family, the STM8 access line, the broader 8-bit microcontroller class, and the wider embedded-processing and power-management ecosystem. Its combination of mixed signal and serial connectivity makes it suitable for compact control systems rather than high-compute applications. The device provides 8 Kbyte of Flash for program storage, 1 Kbyte of RAM for working memory, and 640 bytes of true data EEPROM for parameters that must retain their values. The 10-bit ADC supports analog-to-digital measurements, while two timers support timing, periodic events, and basic input-capture or output-compare functions. UART, SPI, and I2C interfaces enable connection to sensors, displays, transceivers, memory devices, and other embedded peripherals. The operating supply range is 2.95 V to 5.5 V, supporting both 3.3 V and 5 V system architectures. Its 16 MHz maximum clock provides adequate execution bandwidth for control loops, protocol handling, and sequential logic. The device exposes 16 I/O ports and is offered in a compact 32-pin no-lead package with a 0.65 mm pitch, reducing board area while retaining a substantial pin count for mixed-signal and serial-interface designs. Typical applications include industrial sensor nodes, compact motor controllers, digital control panels, appliance interfaces, LED-control boards, and low-cost serial bridges. The STM8S903K3U3TR is particularly useful where a design needs local analog measurement, nonvolatile configuration storage, and multiple serial buses without adopting a higher-pin-count or higher-cost microcontroller. PCB design should place the decoupling capacitor adjacent to the supply pins and route analog, digital, and clock signals with appropriate separation. Confirm the exact exposed-pad, ground, reset, clock, and I/O assignments from the manufacturer pinout and layout guidance before fabrication. This product page combines the manufacturer’s device information with a practical feature summary, application guidance, verified specifications, sourcing information, and a conservative replacement assessment that distinguishes true pin-compatible choices from merely similar devices.

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STM8S903K3U6 - 16MHz 8-Bit MCU with 8KB Flash | ST
STM8S903K3U6

STM8S903K3U6 - 16MHz 8-Bit MCU with 8KB Flash | ST

The STMicroelectronics STM8S903K3U6 is an 8-bit STM8S microcontroller with a 16 MHz clock, 8 KB of Flash program memory, 1 KB of RAM, 640 bytes of true EEPROM, and a 10-bit ADC in a 32-pin UFQFPN package measuring 5 x 5 mm. It operates from 2.95 V to 5.5 V and provides 16 I/O ports, two timers, UART, SPI, and I2C interfaces for compact embedded-control designs. An 8-bit microcontroller is a compact embedded-processing component designed around a simple central processing unit, program memory, working memory, and integrated peripherals. The STM8S family belongs to the broader hierarchy of microcontrollers, embedded processors, and semiconductors. Its combination of integrated Flash, true EEPROM, analog conversion, and serial interfaces makes it useful for cost-sensitive appliance control, industrial sensing, compact instrumentation, and low-to-moderate-speed communication equipment. Key features include 8 KB of Flash program memory, 1 KB of RAM, and 640 bytes of integrated true data EEPROM. The device supports a 16 MHz maximum clock and includes a 10-bit analog-to-digital converter, two timers, one UART, SPI, and I2C. Its operating voltage of 2.95 V to 5.5 V supports both 3.3 V and 5 V systems, while a temperature range of -40°C to +85°C covers common industrial and commercial environments. The STM8S903K3/F3 access-line architecture emphasizes performance, robustness, and reduced system cost. Flash permits in-system program storage, true EEPROM retains calibration or configuration data without external memory, and the ADC provides an economical path for analog measurement. The 32-pin UFQFPN package also offers fine-pitch external connectivity for sensors, actuators, displays, and communication transceivers, although its 0.5 mm pitch requires careful PCB assembly and inspection. Typical applications include sensor nodes, appliance controllers, compact industrial interfaces, low-speed data loggers, and embedded modules requiring UART, SPI, or I2C connectivity. Designers can connect analog inputs to the 10-bit ADC, use the timers for periodic measurement or output generation, and retain operating parameters in EEPROM. A UART bridge or level translator can extend the device into RS-232 or RS-485 systems. The primary design consideration is PCB implementation. A 32-pin UFQFPN package requires a land pattern capable of 0.5 mm pitch routing, adequate solder paste coverage, and careful control of thermal and electrical conditions. Firmware should also verify the device-specific reset behavior, clock configuration, peripheral mapping, and ADC calibration sequence against the manufacturer documentation before production. This page consolidates verified manufacturer specifications, distributor availability, procurement information, interface guidance, and same-footprint replacement analysis. It is intended to provide engineering context beyond a basic distributor listing while clearly identifying data that requires confirmation from the manufacturer datasheet.

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STM8S903K3U6TR - 16MHz 8-Bit MCU with 8KB Flash | ST (Tape & Reel)
STM8S903K3U6TR

STM8S903K3U6TR - 16MHz 8-Bit MCU with 8KB Flash | ST (Tape & Reel)

The STMicroelectronics STM8S903K3U6TR is an 8-bit STM8S microcontroller with a 16 MHz clock, 8 KB of Flash program memory, 1 KB of RAM, 640 bytes of true EEPROM, and a 10-bit ADC in a 32-pin UFQFPN package measuring 5 x 5 mm. It operates from 2.95 V to 5.5 V and provides 16 I/O ports, two timers, UART, SPI, and I2C interfaces for compact embedded-control designs. An 8-bit microcontroller is a compact embedded-processing component designed around a simple central processing unit, program memory, working memory, and integrated peripherals. The STM8S family belongs to the broader hierarchy of microcontrollers, embedded processors, and semiconductors. Its combination of integrated Flash, true EEPROM, analog conversion, and serial interfaces makes it useful for cost-sensitive appliance control, industrial sensing, compact instrumentation, and low-to-moderate-speed communication equipment. Key features include 8 KB of Flash program memory, 1 KB of RAM, and 640 bytes of integrated true data EEPROM. The device supports a 16 MHz maximum clock and includes a 10-bit analog-to-digital converter, two timers, one UART, SPI, and I2C. Its operating voltage of 2.95 V to 5.5 V supports both 3.3 V and 5 V systems, while a temperature range of -40°C to +85°C covers common industrial and commercial environments. The STM8S903K3/F3 access-line architecture emphasizes performance, robustness, and reduced system cost. Flash permits in-system program storage, true EEPROM retains calibration or configuration data without external memory, and the ADC provides an economical path for analog measurement. The 32-pin UFQFPN package also offers fine-pitch external connectivity for sensors, actuators, displays, and communication transceivers, although its 0.5 mm pitch requires careful PCB assembly and inspection. Typical applications include sensor nodes, appliance controllers, compact industrial interfaces, low-speed data loggers, and embedded modules requiring UART, SPI, or I2C connectivity. Designers can connect analog inputs to the 10-bit ADC, use the timers for periodic measurement or output generation, and retain operating parameters in EEPROM. A UART bridge or level translator can extend the device into RS-232 or RS-485 systems. The primary design consideration is PCB implementation. A 32-pin UFQFPN package requires a land pattern capable of 0.5 mm pitch routing, adequate solder paste coverage, and careful control of thermal and electrical conditions. Firmware should also verify the device-specific reset behavior, clock configuration, peripheral mapping, and ADC calibration sequence against the manufacturer documentation before production. This page consolidates verified manufacturer specifications, distributor availability, procurement information, interface guidance, and same-footprint replacement analysis. It is intended to provide engineering context beyond a basic distributor listing while clearly identifying data that requires confirmation from the manufacturer datasheet.

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STM8SPLNB1M6 - 16MHz DiSEqC Slave MCU | STMicroelectronics
STM8SPLNB1M6

STM8SPLNB1M6 - 16MHz DiSEqC Slave MCU | STMicroelectronics

The STMicroelectronics STM8SPLNB1M6 is an application-specific 8-bit STM8S microcontroller optimized for DiSEqC slave control in SaTCR-based LNB and switcher systems. It operates at up to 16 MHz and is packaged in a 20-pin SOIC measuring 0.295 inch, or 7.50 mm, in width. Its dedicated role is to manage satellite-bus control rather than general-purpose application processing. A DiSEqC slave controller is a microcontroller that responds to commands from a master receiver over the standardized DiSEqC bus. The STM8SPLNB1M6 integrates this application-specific control function with clock, reset, supply management, reduced-power operation, and safe power-on and power-off handling. It is therefore positioned between a conventional microcontroller and a fixed-function bus controller. Key characteristics include a maximum CPU frequency of 16 MHz, 3.3 V and 5 V operation as identified in product comparisons, and a 20-pin SOIC package. The device belongs to the STM8S family, uses the STM8 core and a CISC architecture, and is listed as ROMless for this application-specific configuration. The 20-pin package also allows a compact layout without requiring a high-pin-count package. The controller's value comes from its application-specific integration. Instead of assigning a general-purpose MCU to manage the bidirectional DiSEqC handshake, power control, and switcher support functions, a SaTCR receiver design can use a device optimized for that interface. Its 16 MHz processing headroom allows protocol handling and supervisory logic to coexist without a larger application processor. Typical uses include DiSEqC-controlled satellite LNB assemblies, multi-output switchers, and integrated receiver front ends that coordinate tuner, LNB, and switcher power sequencing. The part can also appear in receiver designs that require the master and slave ends of the DiSEqC interface to be implemented by dedicated microcontrollers rather than a single general-purpose controller. When laying out a design, treat the STM8SPLNB1M6 as a single-purpose satellite-bus controller rather than a conventional STM8 application MCU. Verify the exact pin assignments, oscillator requirements, programming interface, and supply sequencing against the manufacturer datasheet before routing the board, because those implementation details are not interchangeable with a general-purpose STM8S device merely because the package is identical. This page organizes the confirmed device identity, package information, application focus, and sourcing references for the STM8SPLNB1M6. It also distinguishes application-specific STM8S controllers from general-purpose STM8S devices so engineers can assess replacement risk, firmware dependencies, and the consequences of changing MCU families before committing a layout to production.

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STM8SPLNB1P6 - 16MHz 8-Bit DiSEqC MCU | STMicroelectronics
STM8SPLNB1P6

STM8SPLNB1P6 - 16MHz 8-Bit DiSEqC MCU | STMicroelectronics

The STMicroelectronics STM8SPLNB1P6 is an application-specific 8-bit STM8S-series microcontroller optimized for DiSEqC satellite LNB and switcher control, operating at up to 16 MHz in a 20-pin TSSOP package. The device includes 8 KB of Flash program memory, 640 bytes of EEPROM, and 1 KB of RAM for protocol handling, control logic, and satellite-set peripheral functions. A microcontroller is a programmable integrated circuit that combines a CPU core, memory, peripherals, and communication interfaces on one semiconductor die. The STM8S family belongs to the broader embedded-controller hierarchy: 8-bit microcontroller, embedded controller, semiconductor, and electronic component. Unlike a general-purpose microcontroller, the STM8SPLNB1P6 is application-specific and tailored to the low-speed, command-oriented interfaces used by DiSEqC satellite equipment. The headline features are a maximum clock frequency of 16 MHz, 8 KB of Flash memory, and a compact 20-pin TSSOP package. Its 1 KB RAM supports protocol state, timing, and control variables, while 640 bytes of EEPROM provide nonvolatile storage for configuration or calibration data. The specified operating-temperature range of -40°C to +85°C supports industrial and consumer satellite-access equipment. STMicroelectronics positions this device for DiSEqC slave applications in LNB and switcher systems. In this architecture, the MCU handles command recognition, timing, state management, and communication rather than performing high-bandwidth signal processing. The dedicated application focus can simplify firmware and board design compared with a general-purpose MCU whose unused peripherals add cost and design effort. Typical uses include DiSEqC-compatible LNB controllers, satellite switch controllers, dish positioning interfaces, and set-top receiver control boards. Designers should preserve the exact pin arrangement and peripheral mapping of the 20-pin TSSOP footprint, provide the required clock and decoupling arrangements, and confirm signal levels at the DiSEqC interface before production release. The main design trade-off is specialization. This MCU is appropriate when the board is centered on DiSEqC control and benefits from an integrated application profile, but it is less flexible than a larger general-purpose STM8 or STM32 device. Confirm memory requirements, interface voltage levels, timing, and firmware-toolchain support against the current STMicroelectronics datasheet. This page combines the exact device identity, package, memory, timing, and application information with practical selection guidance, engineering design notes, and verified sourcing links. It helps engineers determine whether the STM8SPLNB1P6 is appropriate for a DiSEqC slave design before requesting a quote and reviewing the manufacturer documentation.

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