STM8S207R8T3 - 24 MHz 64 KB 8-Bit MCU | STMicroelectronics
部品番号: STM8S207R8T3 ✓ 生産中STM8S207R8T3 概要
An STM8 microcontroller is an 8-bit embedded controller within the broader microcontroller and semiconductor hierarchy. It combines a CPU, program memory, data memory, peripherals, and general-purpose I/O in one integrated circuit. The STM8S207 performance line is aimed at applications that need more connectivity and mixed-signal resources than basic 8-bit controllers, while retaining the simple programming model and peripheral set associated with the STM8 family.
The headline operating specifications are a 24 MHz maximum clock speed, 64 KB of Flash memory, and a 64-pin LQFP package. The MCU supports a 3 V to 5.5 V supply range, as identified in the STM8S207R8T3 technical listing, and provides 38 I/O ports in the same listing. Its integrated 10-bit ADC enables analog sensor acquisition, while the CAN, UART, SPI, and I2C interfaces support industrial communication, external peripherals, data logging, and actuator-control systems.
The STM8S207R8T3 belongs to the STM8S207 family, whose 64-pin members provide a practical balance of processing speed, memory, connectivity, and package size. The 8-bit architecture is suitable for real-time control tasks that do not require a high-performance 32-bit CPU. Typical embedded applications include motor and relay control, industrial interfaces, instrumentation, environmental monitoring, communication gateways, and compact consumer controllers.
Design work should account for the device’s supply-voltage limits, clock configuration, peripheral pin multiplexing, and ADC input requirements. Use the manufacturer’s pinout and application information when assigning communication and analog functions, and include appropriate decoupling and signal-conditioning arrangements around the MCU. Because the STM8S207R8T3 is a high-pin-count LQFP device, careful PCB layout is important for reliable soldering, short return paths, and stable peripheral operation.
This product page combines the core STM8S207R8T3 specifications, package information, application guidance, and verified replacement candidates. It is intended to help engineers compare the MCU with same-package family options, plan PCB and peripheral assignments, and identify the technical differences that matter before approving a substitution.
ドロップイン代替品: STM8S207R8T3 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM8S207R8T3 （同一形状・フットプリント） — 相違点: ADC Resolution, EEPROM, Package, Product Type, Series.
STM8S207R8T6
✅ ドロップイン価格はお問い合わせください
データシートを見る →STM8S208R8T6
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →STM8S207RBT3TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM8S207R8T3 最大定格＆電気的特性
| Product Type | 8-bit microcontroller (MCU) |
| Manufacturer | STMicroelectronics |
| Series | STM8S performance line |
| Maximum Clock Speed | 24 MHz |
| Core Processor | STM8 8-bit core |
| Flash Program Memory | 64 KB |
| Program Memory Organization | 64K x 8 bits |
| Supply Voltage Range | 3 V to 5.5 V |
| ADC Resolution | 10 bits |
| UART Interfaces | 2 |
| SPI Interface | 1 |
| I2C Interface | 1 |
| CAN Interface | 1 |
| I/O Port Count | 38 |
| Package Type | 64-pin LQFP |
| Packaging | Tray |
| Lifecycle Stage | Active |
STM8S207R8T3 64-pin lqfp ピン配置ガイド
STM8S207R8T3 (64-pin lqfp パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM8S207R8T3.
詳細は データシート をご参照ください。
主な用途
STM8S207R8T3 の用途: 6 件s: CAN-Based Industrial Control, Environmental Monitoring Node, Motor and Relay Control, Serial Data Acquisition System, Communication Gateway, Instrumentation Control Panel.
CAN-Based Industrial Control
The STM8S207R8T3 fits compact CAN controller designs because it combines an STM8 8-bit core operating at up to 24 MHz with an integrated CAN peripheral, timers, and 64 KB of Flash. The controller can supervise actuators, process local inputs, and manage a periodic communication schedule without requiring a separate protocol controller. Its 3 V to 5.5 V supply range supports common industrial equipment levels. In the final circuit, add the appropriate CAN transceiver, termination, protection network, and common-mode strategy. Firmware should include node-startup handling, bus-off recovery, error counters, and safe output states. Because the exact alternate-function assignments are not listed in the product summary, confirm the CAN pins and timer channels against the manufacturer pinout before schematic capture.
おすすめ
Environmental Monitoring Node
The STM8S207R8T3 is appropriate for an environmental monitoring node that combines analog sensor measurement with local serial reporting. Its 10-bit ADC can sample resistive, voltage, or suitably conditioned sensor outputs, while SPI and I2C provide options for connecting memory or digital sensors. The 24 MHz processor supports time-based sampling, filtering, threshold evaluation, and local fault detection, and 64 KB of Flash accommodates application firmware and configuration. Use the manufacturer ADC guidance to select the input range, acquisition time, and sampling arrangement. External conditioning may be needed for slow high-impedance sensors, and the power design should include filtering that does not degrade measurement accuracy. Firmware must also manage sensor settling time and regular recalibration or baseline checks.
おすすめ
Motor and Relay Control
The STM8S207R8T3 can serve as the supervisory controller in a relay, solenoid, or small motor-control assembly. Its multiple timers support periodic timing, pulse generation, input capture, and motor-control-related functions, while the GPIO count supports control outputs and status inputs. The 24 MHz execution speed allows the MCU to combine command handling, state monitoring, and communication tasks. In a practical design, use transistor or MOSFET driver stages rather than driving inductive loads directly, include flyback protection, and provide logic-level translation where necessary. Firmware should debounce inputs, impose startup delays, and force outputs to a defined state during reset. Review timer channel routing and electrical limits in the manufacturer documentation before assigning the LQFP pins.
おすすめ
Serial Data Acquisition System
The STM8S207R8T3 is well suited to acquiring and forwarding data from sensors, test equipment, or service interfaces because it provides two UARTs alongside SPI and I2C. One UART can connect to a local console while another handles an external instrument, and the 64 KB Flash provides room for protocol handling, buffering, and configuration. The MCU can timestamp events with its timers, validate incoming frames, and maintain a fault log or local status display. The internal 10-bit ADC can supplement external digital sensors with analog measurements. For reliable serial links, define logic levels, termination, isolation, and connector requirements during schematic design. Firmware should include frame validation, timeout recovery, and configurable baud-rate handling so that the node can recover safely after communication faults.
おすすめ
Communication Gateway
The STM8S207R8T3 can act as a compact protocol gateway when a system must translate between CAN, UART, SPI, or I2C. The 24 MHz 8-bit processor provides enough timing margin for frame routing and status monitoring, while 64 KB of Flash supports protocol state machines and firmware updates. Its 38 I/O ports allow multiple interfaces and indicators to coexist without adding a separate interface IC. The design should use buffered level conversion where another domain uses different voltage thresholds, and each externally accessible line should receive appropriate surge and ESD protection. Firmware should isolate faults so that one failed communication path does not prevent safe operation of the others, and it should report reset causes, bus status, and configuration versions for maintenance.
おすすめ
Instrumentation Control Panel
The STM8S207R8T3 works as a front-panel controller in instrumentation that combines buttons, indicators, analog sensing, and an external communications port. Its GPIO resources can support panel inputs and outputs, while the timers provide precise intervals, debounce timing, and display or alert updates. The 10-bit ADC can monitor potentiometers, dividers, or sensor signals when appropriate conditioning is included. The 64 KB Flash capacity is adequate for menu logic, calibration values, diagnostics, and protocol handling, while UART, SPI, or I2C can connect to a display or measurement module. The 3 V to 5.5 V operating range simplifies shared-rail designs, but logic compatibility must still be checked for every peripheral. Use the manufacturer pin table to avoid conflicts between panel GPIO, timer outputs, and communication functions.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM8S207R8T3 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM8S207R8T6 | STM8S208R8T6 | STM8S207RBT3TR |
|---|---|---|---|---|
| Package | 64-pin LQFP | 64-pin LQFP | 64-pin LQFP | 64-pin LQFP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core Processor | STM8 8-bit core | STM8 8-bit core | STM8 8-bit core | STM8 8-bit core |
| Maximum Clock Speed | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
主な差別化要因
- Exact 64 KB STM8S207 performance configuration （vs STM8S208R8T6)
- Explicit T3 ordering configuration （vs STM8S207R8T6)
- Targeted 64 KB STM8S207R8 memory configuration （vs STM8S207RBT3TR)
設計ノート
Route the 64-pin LQFP with adequate annular rings, solder-mask clearance, and thermal-relief or via-in-pad strategy appropriate to the assembly process. Place decoupling capacitors close to each supported supply pin and keep the ground return path short. Do not assign communication or timer functions until their alternate-function pins are cross-checked in the manufacturer pinout.
Design the supply for 3 V to 5.5 V operation while accounting for startup current, GPIO loading, and active peripherals. Use separate filtering paths where sensitive analog circuitry shares the MCU supply. Confirm whether the selected system uses 3.3 V or 5 V logic before connecting external peripherals, and include brownout and reset behavior in the power-failure design.
For CAN, UART, SPI, and I2C interfaces, use short traces, continuous reference planes, and the voltage-level and termination scheme required by the connected device. Place protection devices close to connector entry points. For ADC signals, keep routes away from switching nodes and provide appropriate source impedance and filtering to obtain stable 10-bit measurements.
Do not treat the R8, R8B, T3, T6, and T3TR ordering codes as interchangeable without checking the manufacturer ordering table. Verify temperature grade, Flash capacity, pin functions, and packing method. A board change should also include firmware verification for startup, clock selection, peripheral multiplexing, watchdog behavior, and communications fault recovery.
コンプライアンス情報
The manufacturer and distributor listings do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for this exact MPN.
