STM8S207C8T3 - 24MHz 8-Bit MCU with 64KB Flash | ST
MPN: STM8S207C8T3 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.9722 | $3.97 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STM8S207C8T3 Overview
An STM8S microcontroller belongs to the 8-bit MCU hierarchy: microprocessor core, embedded controller, and programmable digital control component. Unlike a discrete logic controller, an MCU integrates firmware memory, data memory, peripherals, and I/O in one package. This integration lets a design acquire sensor inputs, execute control logic, drive outputs, and exchange data with other assemblies without requiring several separate logic devices.
Confirmed features include 24 MHz operation, 64 KB Flash, 4 KB RAM, 38 I/O ports, and a 3 V to 5.5 V supply range. The STM8S207 family description also identifies a 10-bit ADC, timers, two UARTs, SPI, I2C, and CAN. These interfaces support analog measurement, actuator control, serial peripherals, industrial networking, and service communications. The exact pin assignments and complete electrical limits require confirmation against the manufacturer documentation.
At a maximum 24 MHz clock, the 8-bit MCU provides useful processing throughput without an external memory interface. Its 64 KB Flash supports embedded application code, while 4 KB RAM handles working data and stack operations. The 48-LQFP package exposes substantially more I/O than smaller packages, making the device suitable for connectorized control boards that need numerous digital, analog, and communications signals.
Typical uses include industrial control modules, motor and relay-control boards, sensor acquisition units, CAN-connected equipment, communication bridges, and compact consumer appliances. A design can place the MCU beside sensors and power stages, then use its ADC and serial interfaces to acquire measurements while timers and GPIO control the system. Firmware and external circuitry still require validation for timing, analog accuracy, and EMC requirements.
The principal layout consideration is careful decoupling and signal grouping around the 48-LQFP device. Keep the MCU supply path compact, place stable bypass capacitance at its supply pins, reserve adjacent routing for sensitive analog inputs, and separate high-current switching returns. Before layout approval, verify every ball-and-pad-style LQFP pin assignment against the official pinout and confirm oscillator, debug, reset, and communications routing requirements.
This page consolidates verified distributor specifications, sourcing information, family capabilities, and practical selection considerations. It distinguishes confirmed STM8S207C8T3 values from unavailable details rather than estimating electrical limits, package pricing tiers, pin functions, or lifecycle compliance claims.
Drop-in alternatives for STM8S207C8T3 — 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 STM8S207C8T3 (same form factor and footprint) — differing in Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM8S207C8T6
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →STM8S207C8T6TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8S207CBT6TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8S208CBT3TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8S007C8T6TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8S207C8T3 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller unit (MCU) |
| Maximum Clock Frequency | 24 MHz |
| Flash Program Memory | 64 KB |
| RAM | 4 KB |
| Supply Voltage Range | 3 V to 5.5 V |
| I/O Port Count | 38 ports |
| ADC Resolution | 10 bits |
| UART Count | 2 |
| SPI Interface | 1 interface indicated in family description |
| I2C Interface | 1 interface indicated in family description |
| CAN Interface | CAN interface indicated in family description |
| Timer Support | Timers indicated in family description |
| Package | 48-LQFP, 7 x 7 mm |
| Mounting Type | Surface mount |
| Lifecycle Stage | Active |
| Manufacturer Product Family | STM8S20xxx performance line |
| Program Memory Architecture | 64K x 8 bits |
STM8S207C8T3 48-lqfp, 7 x 7 mm Pin Configuration Guide
Pin configuration for STM8S207C8T3 (48-lqfp, 7 x 7 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 STM8S207C8T3.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8S207C8T3 is suitable for 6 applications: CAN-Connected Industrial Control, Sensor Acquisition and Monitoring, Serial Communication Bridge, Motor and Relay Control, Automation and Process Controller, Consumer Appliance Controller.
CAN-Connected Industrial Control
STM8S207C8T3 fits a compact CAN control node because its family provides CAN, a 24 MHz clock, 64 KB Flash, and 4 KB RAM for protocol handling and control logic. The MCU can receive commands, update internal state, and operate digital outputs while the integrated 10-bit ADC monitors analog process inputs. Place an appropriate external CAN transceiver beside the controller and isolate high-current switching paths from the analog section. The main validation task is timing: CAN bit timing, oscillator tolerance, interrupt latency, and transceiver-loop delay must be checked together before production use.
Recommended
Sensor Acquisition and Monitoring
The STM8S207C8T3's 10-bit ADC, 24 MHz processing clock, and 38 I/O ports support compact sensor-acquisition modules with multiple digital status inputs and analog measurement channels. Its 64 KB Flash can hold calibration tables and application firmware, while the two UARTs support sensor modules or service consoles. A practical design should use short analog traces, local supply bypassing, and a controlled reference arrangement to limit conversion noise. Because the supplied material does not specify ADC input impedance, acquisition time, reference accuracy, or sample-rate limits, those values must be verified in the manufacturer datasheet.
Recommended
Serial Communication Bridge
STM8S207C8T3 is appropriate for a protocol-conversion or service-bridge assembly because the STM8S207 family includes two UARTs plus SPI and I2C. Firmware can translate among serial interfaces, manage buffering, provide diagnostics, and control local status indicators. The 48-LQFP package provides 38 I/O ports, allowing multiple interface signals without moving to a very small package. Designers should expose protection for externally accessible lines, define logic levels carefully, and verify UART and serial timing from the exact device documentation. Firmware must also respect peripheral-sharing rules and available interrupt resources.
Recommended
Motor and Relay Control
The STM8S207C8T3 can act as the supervisory controller in a relay, solenoid, or small-motor module by combining timers, GPIO, ADC feedback, and serial control. Its 24 MHz clock supports time-based control logic, while the family timer resources can coordinate switching events. The MCU should not drive inductive loads directly unless its absolute output ratings and protection requirements explicitly permit it; external transistors, flyback paths, fuses, and snubbing may be required. Current sensing and analog feedback can be connected through protected inputs, but exact pin multiplexing and drive ratings must come from the official 48-pin documentation.
Recommended
Automation and Process Controller
STM8S207C8T3 suits compact automation modules that need local sensing, timing, communications, and operator-facing control. The 10-bit ADC supports basic process measurement, the 38 I/O ports accommodate digital inputs and outputs, and the two UARTs can connect panels or service equipment. Its 64 KB Flash and 4 KB RAM are suitable for focused control rather than large data logging. Firmware should include input filtering, safe-state behavior, watchdog handling, and fault reporting. Exact pin assignment must be reviewed against the MCU's alternate-function matrix before assigning mixed analog and communication signals.
Recommended
Consumer Appliance Controller
The STM8S207C8T3 can coordinate key inputs, displays, sensors, sound or motor-related outputs, and service communications in a compact appliance controller. Its 64 KB Flash accommodates control firmware and configuration data, while SPI and I2C support common serial peripherals. The 10-bit ADC can monitor analog feedback or simple sensor networks, subject to the exact electrical limits in the datasheet. A production design should partition sensitive measurement circuits from relay, motor, or dimmer switching nodes and include hardware shutdown paths. Firmware updates and end-of-line test requirements should also be considered early.
Recommended
Recommended Products Summary
Engineering reference data for STM8S207C8T3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8S207C8T6 | STM8S207C8T6TR | STM8S207CBT6TR | STM8S208CBT3TR | STM8S007C8T6TR |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 48-LQFP, 7 x 7 mm | 48-LQFP | 48-LQFP | 48-LQFP | 48-LQFP | 48-LQFP |
Key Differentiators
- Verified peripheral integration for communications-heavy embedded control (vs STM8S007C8T6TR)
- Direct 4 KB working RAM availability (vs STM8S007C8T6TR)
- Broad I/O availability in the selected package (vs STM8S007C8T6TR)
Design Notes
Route the STM8S207C8T3 supply from a low-impedance power plane and place the manufacturer's required bypass capacitors directly at the relevant supply pins. Separate analog and digital ground treatment only as recommended by the official device documentation; do not invent return paths from general MCU practice. The verified 3 V to 5.5 V operating range does not specify startup ramp limits, regulator tolerance, or capacitor values, so those details must come from the datasheet and system power-budget analysis.
Keep communication and oscillator routing short and away from high-current switching nodes. With 38 I/O ports and integrated analog and serial functions, a 48-LQFP layout can easily mix sensitive and noisy nets. Assign pins from the official alternate-function matrix before routing, maintain consistent return paths beneath critical interfaces, and provide test access for power, reset, communications, and programming. Similar package dimensions alone do not validate pin compatibility for any listed alternative.
Use the STM8S207C8T3's two UARTs, SPI, I2C, and CAN only after checking the exact pin multiplexing and peripheral-sharing limitations for the selected suffix. Add appropriate termination, protection, and transceiver circuitry at board edges; MCU pins alone do not provide complete CAN, RS-485, or long-distance serial interfaces. Validate signal levels and timing against the connected devices, especially when crystal-controlled serial communication must remain accurate across temperature.
Do not substitute an STM8S207 or STM8S008 ordering code solely because the package is labeled 48-LQFP. The C, B, T3, and T6 suffixes may affect ordering attributes, and the supplied data does not establish a complete pin-for-pin comparison. For an existing PCB, check every power, ground, reset, oscillator, programming, analog, and communications signal against both manufacturer datasheets. For new firmware, also review peripheral changes and boot assumptions before substitution.
Compliance Information
The supplied verified data confirms active lifecycle status but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.