STM8S207C6T3 - 24MHz 32KB 8-Bit MCU | STMicroelectronics
MPN: STM8S207C6T3 ✓ ActiveSTM8S207C6T3 Overview
An 8-bit microcontroller is a programmable semiconductor that integrates a CPU core, nonvolatile program memory, data memory, and peripherals onto one package. The STM8S207 belongs to the STM8S family and the broader hierarchy of microcontroller → embedded processor → semiconductor. Its performance-line positioning combines a 24 MHz clock with multiple serial interfaces, making it useful where moderate control processing and system connectivity matter more than the processing power of a 32-bit Cortex-M device.
Key features include 32 KB of Flash memory, an integrated 10-bit analog-to-digital converter, two UARTs, SPI, I²C, and CAN connectivity, plus 38 I/O ports according to the retrieved product data. The 3 V to 5.5 V supply range supports conventional embedded equipment, while the 48-pin LQFP package exposes enough interface pins for external memories, sensors, actuators, and communications transceivers.
The STM8S207C6T3 belongs to STMicroelectronics' STM8S20xxx performance line, whose devices span program-memory configurations from 32 KB to 128 KB. This particular ordering code provides the 32 KB configuration and 24 MHz maximum operating frequency. Its combination of EEPROM and Flash supports firmware storage and nonvolatile parameter retention without requiring an external memory component in designs that remain within the available memory budget.
Typical applications include industrial sensor nodes, CAN-connected equipment, motor and relay controllers, building-control interfaces, compact communication modules, and low-cost embedded control panels. The CAN interface is especially useful in systems that need deterministic network participation, while SPI and I²C allow the controller to connect sensors and external transceivers. The two UARTs also support legacy serial peripherals, diagnostics ports, or service interfaces.
Designers should verify the exact pin assignment, alternate-function mapping, clock configuration, and peripheral electrical limits in the manufacturer datasheet before layout release. The LQFP package also requires attention to thermal dissipation when the device operates continuously at 24 MHz or drives I/O loads at the maximum specified levels. Because public snippets do not provide a complete verified pin list, no unverified pin assignments are asserted here.
This page consolidates verified distributor and manufacturer information, practical integration guidance, package-specific comparisons, and honest drop-in alternative constraints. It distinguishes confirmed values from missing details and avoids presenting generic cross-reference results as guaranteed replacements.
Drop-in alternatives for STM8S207C6T3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM8S207C6T3 (same form factor and footprint) — differing in Package, ADC Resolution, Flash Memory, Core, Operating Voltage.
STM8S207C6T6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM8S208C6T6
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →STM8S207C8T6
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →STM8S207C4T3
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM8AF5288TCY
✅ Drop-InContact for price
View Datasheet →STM8S207C6T3 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller (MCU) |
| Product Line | STM8S performance line |
| Maximum Clock Frequency | 24 MHz |
| Program Memory | 32 KB Flash |
| Program Memory Organization | 32K x 8 bits |
| Data Memory | Integrated EEPROM |
| ADC Resolution | 10 bits |
| UART Count | 2 |
| Serial Interfaces | SPI, I²C, and CAN |
| I/O Port Count | 38 |
| Supply Voltage Range | 3 V to 5.5 V |
| Package | LFQP-48 |
| Package Type | 48-pin LQFP |
| Mounting Type | Surface Mount |
| Lifecycle Status | Active |
| Core Architecture | 8-bit |
| Timer Support | Integrated timers |
STM8S207C6T3 48-pin lqfp Pin Configuration Guide
Pin configuration for STM8S207C6T3 (48-pin lqfp package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM8S207C6T3.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8S207C6T3 is suitable for 6 applications: CAN-Connected Industrial Sensor Node, Building Control and HVAC Interface, Motor and Relay Controller, Communications Module and Gateway, Consumer Appliance Controller, Programmable Logic Controller.
CAN-Connected Industrial Sensor Node
The STM8S207C6T3 fits compact industrial sensor nodes because it combines a 24 MHz 8-bit core with CAN, a 10-bit ADC, two UARTs, SPI, I²C, and 32 KB of Flash in an LFQP-48 package. It can acquire analog sensor data, process local control logic, and publish measurements through a CAN transceiver on the same controller. The 3 V to 5.5 V operating range accommodates conventional industrial interface levels. A key advantage is the combination of CAN and 38 I/O ports without requiring a larger microcontroller. Firmware should implement bus-error counters, safe-state behavior, and communication timeouts, while the PCB must provide transceiver isolation, surge protection, and correct 120-ohm termination only where the network topology requires it.
Recommended
Building Control and HVAC Interface
The STM8S207C6T3 is appropriate for building-control equipment requiring several low-speed communication paths and discrete I/O. Its two UARTs can support room controllers or service consoles, while I²C and SPI accommodate sensors, display drivers, and nonvolatile storage. The 10-bit ADC is useful for potentiometers, thermistors, and current-sense signals, while the 38 I/O ports can operate relays, indicator lamps, and digital sensors. With 32 KB of Flash, the MCU can hold room for diagnostics and configuration logic in addition to the main control task. The 3 V to 5.5 V range supports mixed 3.3 V and 5 V designs, provided every attached peripheral meets its voltage requirement. Production designs should include watchdog recovery, fail-safe relay states, brownout handling, and debouncing for mechanical inputs.
Recommended
Motor and Relay Controller
The STM8S207C6T3 can serve as the supervisory controller in a compact motor-control, solenoid, or relay-control module. Its timers provide timing resources for actuator sequencing, the 10-bit ADC supports current or position feedback, and the available UART, SPI, and I²C interfaces allow local sensors and power electronics to communicate with the controller. The 48-LQFP package provides 38 I/O ports, reducing the need for external I/O expanders when driving multiple discrete loads. At 24 MHz, the controller can execute a deterministic supervisory state machine, although it is not intended to replace a dedicated high-performance motor-control processor for complex field-oriented control. Relay drivers require flyback protection, and inductive or high-current outputs should be isolated from sensitive analog and communications sections of the PCB.
Recommended
Communications Module and Gateway
The STM8S207C6T3 is suitable for small protocol gateways and communications modules that need flexible serial connectivity in a compact embedded package. Two UARTs can connect radio or modem modules, SPI can support higher-throughput transceivers or storage, and I²C can handle configuration sensors or auxiliary devices. The integrated CAN interface allows the module to participate in embedded CAN networks, while the 24 MHz processor supports protocol framing, filtering, and local state management. Its 32 KB Flash capacity is appropriate for lightweight gateways but may be restrictive for large protocol stacks or graphical configuration interfaces. Designers should allocate memory for boot code and firmware updates, isolate communication interfaces from noisy power converters, and use the two UARTs for distinct debug and production functions when the application requires concurrent access.
Recommended
Consumer Appliance Controller
The STM8S207C6T3 fits cost-sensitive appliance controllers that combine local logic, analog measurement, and simple user-interface connections. Its 38 I/O ports can operate buttons, indicators, display segments, and control outputs, while the 10-bit ADC can monitor temperature, potentiometer, or power-supply feedback. The 3 V to 5.5 V range accommodates common appliance logic levels, and 32 KB of Flash can store product firmware, calibration data, and operating-state logic. Serial interfaces permit service access or connection to an optional daughterboard without consuming excessive pins. The 8-bit architecture is appropriate when the application performs sequencing and simple control rather than intensive user-interface rendering. A robust design should include brownout-safe state restoration, hardware debouncing, watchdog recovery, and controlled shutdown behavior so heaters, motors, or valves return to a defined state after a fault.
Recommended
Programmable Logic Controller
The STM8S207C6T3 can form the core of a small programmable logic controller for equipment requiring digital I/O, analog monitoring, and serial diagnostics. Its integrated timers support periodic input scanning and output scheduling, while the 10-bit ADC adds basic analog supervision to otherwise discrete logic. Two UARTs allow a programming interface and a separate debug or expansion link, and CAN provides a structured option for machine-to-machine communication. The 32 KB Flash limit must be checked carefully for ladder-runtime interpretation, diagnostics, and future expansion, making this device more appropriate for compact PLCs than large universal controllers. Hardware design should use galvanic isolation where safety or long cable runs require it, along with surge protection, watchdogs, fail-safe outputs, and a secure bootloader for production firmware updates.
Recommended
Recommended Products Summary
Engineering reference data for STM8S207C6T3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8S207C6T6 | STM8S208C6T6 | STM8S207C8T6 | STM8S207C4T3 | STM8AF5288TC |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (LFQP-48) | 48-LQFP (LFQP-48) | 48-LQFP (LFQP-48) | 48-LQFP (LFQP-48) | 48-LQFP (LFQP-48) | 48-LQFP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core Architecture | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
| Temperature Ordering Code | T3 | T6 | T6 | T6 | T3 | TC |
Key Differentiators
- Verified 32 KB Flash configuration (vs STM8S207C8T6)
- Same-family T3 ordering option (vs STM8S207C6T6)
- Complete connectivity in one 48-pin MCU (vs STM8AF5288TC)
- Target-specific 32 KB option avoids unnecessary memory overhead (vs STM8S207C4T3)
Design Notes
Design the 3 V to 5.5 V supply rail so it remains inside the STM8S207C6T3 operating range during startup, load transients, and brownout recovery. Place the MCU's local supply-decoupling capacitor at the associated power and ground pins with a short return path, and keep switching-converter routing away from sensitive analog inputs. Because the retrieved data does not provide capacitor values or detailed electrical limits, use the values and stability requirements specified in the manufacturer datasheet rather than substituting generic assumptions.
Reserve and route all 48 package lands according to the official LFQP-48 drawing before committing the PCB. The device exposes 38 I/O ports, but alternate-function multiplexing and package-specific restrictions must be checked against the final pin table. Keep the exposed ground connection and thermal path unobstructed, maintain consistent return references beneath serial interfaces, and separate CAN, UART, and SPI routes from switching nodes and high-current relay traces.
Do not treat a shared STM8S family or 48-pin package as proof of interchangeability. Firmware, bootloader assumptions, clock settings, EEPROM behavior, peripheral mapping, electrical limits, and temperature grade can differ among STM8S207C6T3, STM8S207C6T6, STM8S207C8T6, STM8S207C4T3, and STM8AF5288TC. Before substitution, compare the official pin tables and errata, rebuild with the correct device definition, and test reset, clock start-up, ADC calibration, communications, and all safety-related outputs.
For CAN, UART, SPI, and I²C routes, use continuous reference planes where practical and terminate interfaces according to the specific protocol and transceiver requirements. Avoid long stubs, especially on SPI clock and CAN TX/RX paths. For SPI, keep the clock and data routing compact and establish a clear return path; for I²C, place pull-up resistors where they minimize bus capacitance. The manufacturer's datasheet and selected peripheral timing specifications remain controlling.
Validate junction temperature and output-drive loading using the manufacturer's thermal and electrical data rather than assuming that the LQFP outline alone guarantees adequate cooling. Provide continuous copper around the ground pins, use a standard copper pour where board area permits, and avoid enclosing the device in thermally isolated pockets. If the design continuously runs at 24 MHz or drives many I/O outputs, verify ambient temperature, power consumption, copper area, and airflow with a prototype.
Compliance Information
The supplied verified search results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been inferred from the manufacturer or distributor listing.
