STM8S207RBT6 - 24MHz 128KB 8-Bit MCU | STMicroelectronics
MPN: STM8S207RBT6 ✓ ActiveSTM8S207RBT6 Overview
An 8-bit microcontroller is a compact embedded computing device that executes firmware from nonvolatile Flash memory while using timers, serial interfaces, and analog inputs to control a target system. The STM8S207RBT6 belongs to the STM8S performance-line hierarchy of 8-bit RISC microcontrollers, combining an advanced Harvard-architecture core with integrated EEPROM, analog, timing, and communication peripherals.
Key features include a maximum CPU frequency of 24 MHz, 128 KB of Flash, a three-stage pipeline, a 10-bit ADC, two UARTs, SPI, I2C, and CAN connectivity. According to the STM8S207RBT6 product information, these peripherals allow the device to consolidate functions that would otherwise require separate interface and conversion ICs. The LQFP-64 package also provides numerous general-purpose I/O pins for external sensing, actuation, and communication connections.
The STM8 core uses Harvard architecture, separating instruction and data access paths, while the three-stage pipeline supports efficient instruction throughput. At the maximum 24 MHz operating frequency, the device delivers up to 20 MIPS. Integrated EEPROM supports parameter and configuration storage, although its exact capacity must be confirmed from the complete manufacturer datasheet before it is reserved in firmware.
Typical applications include industrial controllers, motor-control and automation equipment, communication modules, building-control interfaces, consumer appliances, and compact embedded control panels. CAN, SPI, I2C, and UART support is particularly useful for systems that must connect sensors, actuators, human-interface modules, or service buses while retaining a compact embedded-control architecture.
Designers should verify the complete 64-pin pinout, peripheral alternate-function mappings, clock configuration, and decoupling requirements against the manufacturer datasheet. The 10 x 10 mm LQFP footprint is easy to inspect after soldering, but its fine-pitch leads still require careful land-pattern and paste-volume control for reliable assembly.
This product page consolidates verified manufacturer and distributor information, package details, sourcing data, application guidance, and temperature-grade replacement options into an engineering-focused reference. It distinguishes exact drop-in options from broader functional comparisons so designers can make a package- and pin-compatible selection without overlooking software or qualification constraints.
Drop-in alternatives for STM8S207RBT6 — 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 STM8S207RBT6 (same form factor and footprint) — differing in Package, CAN, Operating Temperature, Timers, I2C.
STM8S207RBT3
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM8S207RBT7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM8S207RBT8
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM8S207RBT6 Maximum Ratings & Electrical Characteristics
| Microcontroller Type | 8-bit RISC microcontroller |
| Series | STM8S performance line |
| Maximum CPU Frequency | 24 MHz |
| Maximum Performance | 20 MIPS at 24 MHz |
| Flash Program Memory | 128 KB |
| Program Memory Organization | 128K x 8 bits |
| Core Architecture | Harvard architecture with 3-stage pipeline |
| ADC Resolution | 10 bits |
| UART Count | 2 |
| SPI Interface | 1 interface |
| I2C Interface | 1 interface |
| CAN Interface | 1 interface |
| Supply Voltage | 3.3 V or 5 V |
| Package | 64-LQFP, 10 x 10 mm |
| Mounting Type | Surface mount |
STM8S207RBT6 64-lqfp, 10 x 10 mm Pin Configuration Guide
Pin configuration for STM8S207RBT6 (64-lqfp, 10 x 10 mm 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 STM8S207RBT6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8S207RBT6 is suitable for 6 applications: CAN-Based Industrial Control, Motor and Actuator Control, Building and Environment Control, Communication Gateway, Consumer Appliance Controller, Data Acquisition and Sensor Node.
CAN-Based Industrial Control
The STM8S207RBT6 fits industrial controllers that combine CAN networking with local analog measurement. Its integrated CAN controller avoids a separate interface IC, while the 10-bit ADC supports sensor inputs and the 128 KB Flash provides room for control, communication, and diagnostic firmware. At up to 24 MHz and 20 MIPS, the device can manage protocol handling and real-time control tasks. The 64-pin LQFP also exposes more I/O than a compact small-footprint MCU. In a practical design, the MCU would connect to a CAN transceiver for the physical network, use its timers for deterministic scheduling, and read sensors through the ADC. Production selection should verify transceiver logic compatibility, bus timing, termination, isolation requirements, and environmental qualification against the complete manufacturer documentation.
Recommended
Motor and Actuator Control
The STM8S207RBT6 is appropriate for compact motor-control and actuator-control boards requiring multiple timers, digital I/O, communications, and analog feedback. Its 24 MHz core supports 20 MIPS, while the 128 KB Flash can hold motion algorithms, fault handling, and communications code. The integrated 10-bit ADC can monitor current, position-sensor outputs, or temperature without a separate converter. Its 64-pin package provides a practical number of control and sensing connections. Designers should use timers for pulse and PWM generation, GPIO for direction or interlock signals, and CAN, UART, or RS-485-capable circuitry for supervisory control. Verify pin alternate functions, timer channels, ADC channels, and motor-driver timing in the datasheet before assigning PCB signals.
Recommended
Building and Environment Control
The STM8S207RBT6 suits building-control modules that need to read analog sensors while communicating over wired networks. A 10-bit ADC supports basic temperature, illumination, and occupancy-sensor interfaces, while two UARTs, SPI, I2C, and CAN expand the available communication choices. Its 128 KB Flash accommodates protocol stacks, scheduling logic, and firmware updates, and the 64-pin LQFP makes external connectors straightforward to route. The MCU can act as a supervisory controller for HVAC, lighting, access, or environmental equipment. Designers should account for electrical-noise immunity, sensor conditioning, open-drain requirements, bus pull-ups, and power-supply stability. The application note and device documentation should be consulted for exact peripheral multiplexing and I/O drive characteristics.
Recommended
Communication Gateway
The STM8S207RBT6 can serve as a protocol-conversion gateway because it combines CAN, SPI, I2C, and two UARTs on one microcontroller. The 24 MHz core and 128 KB Flash are sufficient for compact gateways that translate messages, manage local registers, or perform protocol supervision. Its Harvard-architecture core and three-stage pipeline support the instruction throughput needed by event-driven communication firmware. A typical implementation could receive data through CAN, forward configuration through UART, and access external storage or sensors through SPI or I2C. Because interface multiplexing and buffer sizes can constrain simultaneous traffic, designers should review the peripheral reference material and stress-test the intended message mix. Watchdog behavior, bus fault recovery, and brownout handling are also important for field reliability.
Recommended
Consumer Appliance Controller
The STM8S207RBT6 is well matched to consumer appliances that require a compact controller with several interfaces and moderate firmware capacity. The 128 KB Flash supports state machines, user-interface logic, diagnostics, and communication protocols, while the ADC and timer resources can supervise analog feedback and timing. The 64-pin LQFP provides enough pins for buttons, indicators, sensors, relays, and external transceivers without a complex package. Compared with a basic 8-bit MCU, this device consolidates CAN, SPI, I2C, and two UARTs, reducing board complexity. In a real appliance, firmware could coordinate motor functions, detect faults, and expose a service interface. Validate relay-driver isolation, ESD protection, standby-current behavior, and production-test access before design freeze.
Recommended
Data Acquisition and Sensor Node
The STM8S207RBT6 supports compact sensor nodes that periodically measure analog inputs and forward results through a wired communication interface. The 10-bit ADC handles many cost-sensitive sensing tasks, while timers provide accurate sampling intervals and the three serial-interface families cover local sensors, displays, and network links. Its 128 KB Flash can retain acquisition routines, calibration data, and communication logic, and 20 MIPS provides responsive handling without a larger 32-bit MCU. A practical node would sequence sensor power, trigger measurements, filter results, and transmit packets through UART, CAN, or another configured interface. Pay attention to analog reference stability, sampling-time requirements, sensor-signal levels, and digital input thresholds. For battery-powered nodes, verify sleep modes and wake sources because those values were not present in the supplied source data.
Recommended
Recommended Products Summary
Engineering reference data for STM8S207RBT6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8S207RBT3 | STM8S207RBT7 | STM8S207RBT8 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) - same package | 64-LQFP (10 x 10 mm) - same package | 64-LQFP (10 x 10 mm) - same package |
| CPU Architecture | 8-bit RISC with Harvard architecture and 3-stage pipeline | 8-bit RISC with Harvard architecture and 3-stage pipeline | 8-bit RISC with Harvard architecture and 3-stage pipeline | 8-bit RISC with Harvard architecture and 3-stage pipeline |
| Maximum CPU Frequency | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Maximum Performance | 20 MIPS at 24 MHz | 20 MIPS at 24 MHz | 20 MIPS at 24 MHz | 20 MIPS at 24 MHz |
| Flash Program Memory | 128 KB | 128 KB | 128 KB | 128 KB |
| ADC Resolution | 10 bits | 10 bits | 10 bits | 10 bits |
| Communication Interfaces | 2 UARTs, SPI, I2C, and CAN | 2 UARTs, SPI, I2C, and CAN | 2 UARTs, SPI, I2C, and CAN | 2 UARTs, SPI, I2C, and CAN |
| Temperature Grade | T6: -40 C to 85 C | T3: -40 C to 125 C | T7: -40 C to 105 C | T8: -40 C to 150 C |
Key Differentiators
- Broader integrated connectivity than a basic 8-bit control MCU (vs ATMEGA328P-MNR)
- Higher memory capacity within the STM8S performance line (vs STM8S207R8T6TR)
- Exact package-compatible temperature-grade scaling (vs STM8S207RBT3)
Design Notes
Use the manufacturer 64-LQFP land pattern and verify it against the selected assembly house's footprint conventions before release. The package is only 10 x 10 mm, so pin-1 orientation, pad numbering, solder-mask clearance, and paste volume need careful PCB review. Keep clock, reset, and decoupling traces short, and route high-current or noisy motor and switching-supply paths away from analog inputs connected to the ADC.
Follow the manufacturer recommendations for supply decoupling and pin connection of VD and VSS. Place the required bypass capacitors close to the corresponding device pins, with a short and low-inductance ground return. Verify the selected 3.3 V or 5 V operating condition against every peripheral and external-interface voltage level. Brownout, reset, and power-sequencing behavior must be verified with the complete datasheet rather than inferred from the distributor summary.
Reserve each pin's alternate-function assignment before finalizing the schematic because the 64-pin LQFP combines communications, timers, ADC inputs, and general GPIO. After PCB routing, cross-check every net against the datasheet pin table, especially SWD programming pins, oscillator pins, reset, and any pins shared by analog or debug functions. Maintaining a firmware pin-map table alongside the schematic reduces the risk of configuration mismatches after board bring-up.
Do not treat STM8S207RBT6 as a direct substitute for devices with different Flash capacities, pin counts, peripheral sets, or package dimensions merely because they belong to the STM8 family. When changing only the temperature suffix, confirm that the exact ST ordering code, footprint, pinout, and electrical limits remain unchanged. Likewise, verify CAN transceiver levels and timing, as the MCU contains a CAN controller rather than a physical CAN transceiver.
Compliance Information
The supplied verified results do not state the target part's RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because this is an industrial 8-bit MCU and no automotive qualification was provided.