STM8S207SBT6C - 24MHz 8-bit MCU 128KB Flash LQFP-44 | STMicroelectronics
料号： STM8S207SBT6C ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.36 | $436.00 |
| 500 | $3.92 | $1,960.00 |
| 1,000 | $3.5 | $3,500.00 |
STM8S207SBT6C 概述
An 8-bit MCU (microcontroller unit) is a self-contained computing IC that integrates a CPU core, non-volatile program memory (Flash), read/write data memory (RAM/EEPROM), and configurable peripherals (ADC, timers, communication interfaces) on a single die. Within the broader semiconductor taxonomy, an MCU is a sub-category of microcontroller -> embedded processor -> semiconductor device. The STM8S family uses a Harvard-architecture CISC core designed for deterministic real-time control, balancing low power, high code density, and 5 V tolerance that simplifies interfacing to legacy analog and industrial peripherals.
The STM8S207SBT6C's key specifications include 38 general-purpose I/O lines, a 10-bit successive-approximation ADC with up to 16 channels, a 1 KB true-EEPROM data area plus 6 KB user RAM, two UARTs (including LIN master capability), one SPI peripheral, one CAN 2.0B interface, and a beCAN controller. Integrated reset circuitry, internal 16 MHz RC oscillator, and window watchdog reduce external component count. The part supports up to 30 kV ESD HBM and operates across -40 °C to +85 °C.
Architecturally the STM8S uses a modified Harvard layout, 32-bit program counter with 24-bit linear addressing, and a single-cycle 8x8 multiplier, providing efficient C code generation. The 5 V-tolerant GPIO eliminates level shifters when interfacing to legacy 5 V sensors and drivers, while the integrated CAN controller removes the need for an external transceiver controller. A flexible clock tree with internal 16 MHz HSI reduces external crystal cost for cost-sensitive designs.
Typical applications include industrial sensor conditioning nodes, building automation controllers, smart metering peripherals, automotive body and chassis subsystems, low-end motor control boards, and white-goods user-interface modules. Designers choose this STM8S207 variant when 128 KB Flash headroom is needed for communication stacks (CANopen, Modbus) while staying inside the 5 V-tolerant 8-bit ecosystem.
A critical design consideration is power budgeting: at 24 MHz the core draws roughly 10 mA plus peripheral contributions, so a clean 3.3 V or 5 V LDO rail is recommended. Decouple VDD/VSS pairs with 100 nF X7R ceramic capacitors placed within 3 mm of each pin pair, and reserve a 4.7 uF bulk capacitor on the main rail. The CAN bus requires a 120 ohm termination offset on each end and a common-mode choke for industrial EMC compliance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not consolidated on the manufacturer datasheet or individual supplier listings.
直接替换替代料： STM8S207SBT6C ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM8S207SBT6C （相同外形与封装尺寸） ——差异在于 ADC, Data EEPROM, Operating Temperature, Package, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
STM8S207CBT6
✅ 直接替换📋 参考替代料（不在目录中）
STM8S207RBT6
✅ 直接替换📋 参考替代料（不在目录中）
STM8S207S8T6C
✅ 直接替换📋 参考替代料（不在目录中）
STM8S207KBT6C
✅ 直接替换📋 参考替代料（不在目录中）
STM8S208S6T6C
✅ 直接替换📋 参考替代料（不在目录中）
STM8S207MBT6B
✅ 直接替换📋 参考替代料（不在目录中）
STM8S003K3T6
✅ 直接替换✓ 有现货
$0.61 / 个
查看数据手册 →STM8L151C6T3
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →STM8S207SBT6C 最大额定值与电气特性
| Core | STM8 8-bit CISC |
| Clock Speed (Max) | 24 MHz |
| Program Memory (Flash) | 128 KB |
| Data EEPROM | 1 KB |
| RAM | 6 KB |
| 电源电压 | 3.0 V to 5.5 V |
| I/O Pins | 38 |
| ADC | 10-bit, up to 16 channels |
| Timers | 16-bit (multiple), 8-bit |
| UART | 2 (LIN master capable) |
| SPI | 1 |
| I2C | 1 |
| CAN | 1 (CAN 2.0B, beCAN) |
| 工作温度 | -40 °C to +85 °C |
| 封装 | LQFP-44 (10x10 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| ESD HBM | Up to 4 kV (typical rating class) |
STM8S207SBT6C 引脚配置
| 引脚 1 | PB0 — GPIO PB0 (TIM3_CH1) |
| 引脚 2 | PB1 — GPIO PB1 (TIM3_CH2) |
| 引脚 3 | PB2 — GPIO PB2 |
| 引脚 4 | PB3 — GPIO PB3 |
| 引脚 5 | PB4 — GPIO PB4 (I2C_SCL) |
| 引脚 6 | PB5 — GPIO PB5 (I2C_SDA) |
| 引脚 7 | PB6 — GPIO PB6 (UART1_TX) |
| 引脚 8 | PB7 — GPIO PB7 (UART1_RX) |
| 引脚 9 | VSS — Digital ground |
| 引脚 10 | VDD — Digital supply 3.0-5.5V |
| 引脚 11 | PA0 — GPIO PA0 |
| 引脚 12 | PA1 — GPIO PA1 (SWIM) |
| 引脚 13 | PA2 — GPIO PA2 (UART1_TX alt) |
| 引脚 14 | PA3 — GPIO PA3 (UART1_RX alt) |
| 引脚 15 | VSS — Digital ground |
| 引脚 16 | VDD — Digital supply 3.0-5.5V |
| 引脚 17 | PA4 — GPIO PA4 |
| 引脚 18 | PA5 — GPIO PA5 |
| 引脚 19 | PA6 — GPIO PA6 |
| 引脚 20 | PA7 — GPIO PA7 |
| 引脚 21 | PC0 — GPIO PC0 |
| 引脚 22 | PC1 — GPIO PC1 |
| 引脚 23 | PC2 — GPIO PC2 |
| 引脚 24 | PC3 — GPIO PC3 |
| 引脚 25 | PC4 — GPIO PC4 |
| 引脚 26 | PC5 — GPIO PC5 (SPI_SCK) |
| 引脚 27 | PC6 — GPIO PC6 (SPI_MOSI) |
| 引脚 28 | PC7 — GPIO PC7 (SPI_MISO) |
| 引脚 29 | PD0 — GPIO PD0 (CAN_TX) |
| 引脚 30 | PD1 — GPIO PD1 (CAN_RX) |
| 引脚 31 | PD2 — GPIO PD2 |
| 引脚 32 | PD3 — GPIO PD3 |
| 引脚 33 | PD4 — GPIO PD4 (UART2_TX) |
| 引脚 34 | PD5 — GPIO PD5 (UART2_RX) |
| 引脚 35 | PD6 — GPIO PD6 |
| 引脚 36 | PD7 — GPIO PD7 |
| 引脚 37 | PE0 — GPIO PE0 |
| 引脚 38 | PE1 — GPIO PE1 |
| 引脚 39 | VSS — Digital ground |
| 引脚 40 | VDD — Digital supply 3.0-5.5V |
| 引脚 41 | PE5 — GPIO PE5 |
| 引脚 42 | PE6 — GPIO PE6 |
| 引脚 43 | PE7 — GPIO PE7 |
| 引脚 44 | NRST — External reset (active low) |
典型应用
STM8S207SBT6C 适用于 6 应用s: Industrial Sensor Conditioning Nodes, Building Automation Controllers, Smart Metering Peripherals, Automotive Body and Chassis ECUs, Low-End Motor Control Boards, White-Goods User Interface Modules.
Industrial Sensor Conditioning Nodes
The STM8S207SBT6C fits industrial 4-20 mA loop-powered sensor nodes because its 5 V-tolerant I/O interfaces directly to legacy analog front-ends and 24 V industrial rails after regulation. The integrated 10-bit ADC with up to 16 channels handles multiple analog sensor inputs without external multiplexer, while 128 KB Flash accommodates sensor linearization tables and calibration constants. The CAN 2.0B peripheral enables connection to industrial fieldbus networks. Designers benefit from -40 °C to +85 °C operation and 5 V GPIO tolerance that eliminates level shifters. Compared to a 32-bit STM32, the STM8S207SBT6C offers better code density and lower BOM cost for fixed-function sensor nodes. The LQFP-44 package is hand-solderable for prototype runs.
推荐
Building Automation Controllers
The STM8S207SBT6C is suitable for building automation controllers managing HVAC, access readers, and lighting nodes. Its 24 MHz CPU runs communication stacks like Modbus RTU or BACnet MS/TP while still leaving headroom for control loops. Two UARTs support simultaneous connection to a wired fieldbus and a local HMI display. The 6 KB RAM accommodates Modbus message buffers, and 128 KB Flash allows localized language tables and configuration storage in 1 KB EEPROM. The integrated CAN peripheral provides optional KNX or proprietary backbone connectivity. The 5 V tolerance simplifies interfacing to TRIAC drivers and zero-cross detectors commonly used in AC lighting controls.
推荐
Smart Metering Peripherals
The STM8S207SBT6C serves as the metering computation engine in smart electricity, gas, and water meters. Its 10-bit ADC with 16 channels reads multiple sensor signals including current shunts and temperature sensors for compensation. The 128 KB Flash stores calibration coefficients and time-of-use tariff schedules, while 1 KB EEPROM retains cumulative register values. The part's 5 V GPIO interfaces directly to metrology AFE chips operating from 5 V supplies. For wireless M-Bus or wM-Bus communication, designers add an external radio module controlled via UART. The -40 °C to +85 °C rating suits outdoor metering enclosures.
推荐
Automotive Body and Chassis ECUs
The STM8S207SBT6C targets non-safety automotive body electronics such as door modules, seat controllers, mirror adjusters, and lighting ECUs. Its CAN 2.0B peripheral connects to the vehicle CAN bus for body control messaging. The 5 V GPIO drives LED loads and small relays directly via external FETs. The integrated 16-bit timers generate PWM for motor speed control in seat and mirror actuators. The 128 KB Flash fits CANopen or J1939-style protocol layers. Note that this part is not AEC-Q100 qualified; for safety-critical automotive designs, use the STM8AF series or STM32A series instead.
推荐
Low-End Motor Control Boards
The STM8S207SBT6C is a fit for low-end brushless DC (BLDC) and stepper motor control boards. Its 16-bit advanced timers generate center-aligned PWM with complementary outputs and programmable dead-time insertion for half-bridge drivers. The integrated 10-bit ADC samples back-EMF or current shunt feedback for sensorless commutation. 128 KB Flash stores field-oriented control (FOC) or trapezoidal commutation algorithms with look-up tables. The 5 V GPIO interfaces to 5 V gate drivers such as the L6234. The 44-pin LQFP exposes enough I/O for Hall sensor inputs, fault inputs, and UART debug.
推荐
White-Goods User Interface Modules
The STM8S207SBT6C drives user-interface modules in washing machines, dishwashers, and ovens where cost-optimized 8-bit performance is sufficient. Its GPIO matrix handles capacitive touch sensing via software routines, drives LED or seven-segment displays, and scans keypads. 6 KB RAM accommodates display buffers and state machines. The 128 KB Flash stores UI strings, fault logs, and cycle programs in EEPROM. Two UARTs support diagnostic serial protocols and external module communication. The 5 V GPIO tolerance simplifies interfacing to legacy LED driver ICs without level translation.
推荐
推荐产品汇总
工程参考数据： STM8S207SBT6C ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM8S207CBT6 | STM8S207S8T6C | STM8S208S6T6C |
|---|---|---|---|---|
| Package | LQFP-44 | LQFP-44 | LQFP-44 | LQFP-44 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | STM8 8-bit CISC | STM8 8-bit CISC | STM8 8-bit CISC | STM8 8-bit CISC |
| Clock Speed (Max) | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Program Flash | 128 KB | 64 KB | 64 KB | 128 KB |
| RAM | 6 KB | 4 KB | 4 KB | 6 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 2 KB |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| CAN Controller | Yes (bxCAN) | Yes (bxCAN) | Yes (bxCAN) | Yes (bxCAN) |
| I/O Pins | 38 | 38 | 38 | 38 |
关键差异点
- Highest-density STM8S207 variant in LQFP-44 （对比 STM8S207CBT6)
- Integrated CAN 2.0B controller （对比 STM8S105 series (no CAN))
- 5 V-tolerant GPIO without level shifters （对比 STM32F0 series (3.3 V GPIO))
- Performance-line peripheral set （对比 STM8S003K3T6 (access line))
设计说明
Power supply decoupling is critical for the STM8S207SBT6C. Place a 100 nF X7R ceramic capacitor within 3 mm of each VDD/VSS pin pair, and add a 4.7 uF to 10 uF bulk capacitor on the main 3.3 V or 5 V rail. For noise-sensitive applications, an additional 10 uF capacitor near VDDA/VSSA pins reduces ADC reference noise. The internal voltage regulator requires minimum 100 nF on VCAP pin (if exposed). According to STMicroelectronics application note, poor decoupling is the leading cause of EMC failures on STM8 designs.
PCB layout should route the SWIM debug signal (PA1) with a short trace and provision a 4-pin header for in-circuit programming. The HSE crystal oscillator traces must be kept short and symmetric, surrounded by a ground guard ring to prevent crosstalk. For CAN bus designs, route CAN_TX/CAN_RX to the transceiver with 50 ohm controlled impedance and add a common-mode choke for industrial EMC compliance. NRST requires an external 10 kohm pull-up and a 100 nF capacitor to ground for proper reset behavior.
Common pitfalls when designing with the STM8S207SBT6C include: (1) exceeding 5.5 V on any I/O pin when VDD is below 5 V - some pins are not 5 V tolerant in all modes; (2) failing to enable the SWIM pin's protective circuit before programming; (3) using the internal HSI at 16 MHz while expecting 24 MHz operation - the HSI must be calibrated or HSE used for full speed; (4) omitting the proper Option Byte configuration for read-out protection during production; (5) driving heavy LED loads directly from GPIO without verifying 20 mA source/sink limit per pin.
Thermal management for the STM8S207SBT6C is straightforward due to the LQFP-44 package's exposed thermal performance. At full 24 MHz operation from 5 V supply, the part draws around 10-15 mA, dissipating roughly 50-75 mW - well within the LQFP-44's thermal envelope. However, in applications where the device is placed near heat sources (motor drivers, power regulators), maintain at least 10 mm clearance. The LQFP-44 does not have an exposed pad, so thermal coupling to the PCB is via the standard lead frame and through the ground pins.
合规信息
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified - for safety-critical automotive designs use STM8AF series. Lead-free and halogen-free per STMicroelectronics material declaration.
