STM8S001J3M3 - 16MHz 8-bit MCU, 8KB Flash, SOIC-8 | STMicroelectronics
料号： STM8S001J3M3 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.55 | $5.50 |
| 100 | $0.42 | $42.00 |
| 500 | $0.32 | $160.00 |
| 1,000 | $0.24 | $240.00 |
| 3,000 | $0.2 | $600.00 |
STM8S001J3M3 概述
A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), small non-volatile data storage (EEPROM), and a configurable set of digital and analog peripherals on a single silicon die. The STM8S family sits in the 8-bit MCU category, which traces up the hierarchy to microcontroller -> embedded processor -> semiconductor IC. The STM8S core uses an extended instruction set that is binary-compatible across the STM8S/STM8L families, making code portable to higher-pin-count siblings when the design grows.
Key features include 8 KB Flash with in-application/in-circuit programming, 128 bytes of true byte-erasable EEPROM rated for 100 k cycles, 1 KB SRAM, 5 ADC channels with 10-bit resolution and up to 12-bit oversampling, a 16 MHz internal RC oscillator calibrated to ±1%, and a 1.8 V to 5.5 V supply range. The 8-pin SOIC exposes just enough I/O to drive a handful of switches, LEDs, sensors, or a serial link, and the integrated brown-out reset and watchdog timer simplify safety-critical designs. Two 16-bit timers and one 8-bit timer provide PWM, input capture, and output compare functions for motor, LED, and timing control.
Architecturally, the STM8S001J3 is a derivative of the STM8S003F3 with the same silicon die repackaged into an 8-pin SOIC, dropping most GPIOs in favor of a tiny PCB footprint. The integrated voltage regulator lets the chip run from a single 1.8-5.5 V rail without external components. With an active-mode current in the single-digit mA range and multiple low-power modes down to a few microamps, it is well suited to battery-powered gadgets and always-on sensor nodes.
Typical applications include low-cost sensor interface boards, replacement of ATtiny13/ATtiny85 designs, smart LED controllers, IR remote transmitters/receivers, simple motor and fan controllers, battery chargers, and hobby/educational platforms such as the STM8 eForth project. The wide operating temperature range (-40C to +125C) and 5 V tolerance on most pins also make it viable for industrial control front-ends.
When designing with this device, note that only 6 of the 8 pins are usable as GPIO because NRST and power pins are mandatory. Use the SWIM debug interface for in-circuit programming and debugging, and place a 100 nF decoupling capacitor as close as possible to the VDD pin. Compare pinout carefully against ATtiny85 migration paths before re-using existing PCB layouts.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the ST datasheet, helping engineers quickly evaluate the STM8S001J3M3 for low-pin-count 8-bit designs.
直接替换替代料： STM8S001J3M3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
STM8S001J3M3TR
✅ 直接替换📋 参考替代料（不在目录中）
STM8S001J3M3
✅ 直接替换✓ 有现货
$0.2 / 个
查看数据手册 →STM8L051J3M3
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM8S001J3M3 最大额定值与电气特性
| Manufacturer | STMicroelectronics |
| Series | STM8S Mainstream Value Line |
| Core | STM8 (8-bit, Harvard, 3-stage pipeline) |
| Core Architecture | STM8S |
| Maximum CPU Clock | 16 MHz |
| Program Memory (Flash) | 8 KB (8K x 8) |
| Data EEPROM | 128 bytes (true byte-erasable) |
| SRAM | 1 KB |
| ADC | 10-bit, up to 5 channels |
| Timers | 3 (1x 8-bit + 2x 16-bit) |
| Communication Interfaces | UART, SPI, I2C |
| 电源电压 | 2.95 V to 5.5 V (operating) |
| I/O Voltage Tolerance | 5 V tolerant |
| 工作温度 | -40C to +125C |
| 封装 | SOIC-8 (SO-8 / SO8N) |
| 安装类型 | Surface Mount |
| Debug Interface | SWIM (single-wire) |
| RoHS 状态 | Compliant |
STM8S001J3M3 引脚配置
| 引脚 1 | NRST — Reset input, active low; internal pull-up |
| 引脚 2 | PA1 — GPIO PA1 / TIM2_CH1 / ADC_AIN1 |
| 引脚 3 | PA2 — GPIO PA2 / TIM2_CH2 / ADC_AIN2 / UART1_TX |
| 引脚 4 | GND — Ground reference |
| 引脚 5 | PA3 — GPIO PA3 / TIM2_CH3 / ADC_AIN3 / UART1_RX |
| 引脚 6 | PB4 — GPIO PB4 / I2C_SDA / ADC_AIN4 |
| 引脚 7 | PB5 — GPIO PB5 / I2C_SCL / SPI_NSS / ADC_AIN5 |
| 引脚 8 | VDD — Positive supply input (2.95 V to 5.5 V) |
典型应用
STM8S001J3M3 适用于 6 应用s: ATtiny85 Replacement for Low-Cost Sensor Pills, IR Remote Transmitters and Receivers, Smart LED Controllers and PWM Drivers, Industrial Sensor Interface Front-Ends, Brushless DC and Stepper Motor Controllers, Hobbyist and Educational Platforms (STM8 eForth).
ATtiny85 Replacement for Low-Cost Sensor Pills
The STM8S001J3M3 directly targets designs where an ATtiny85 was previously used at $1+ per unit. Its $0.20 volume price and integrated UART, SPI, and I2C peripherals deliver more connectivity than the ATtiny85 USI, while the 8 KB Flash matches the ATtiny85's program memory. Designers should not assume SOIC-8 pin compatibility with the ATtiny85; instead, use the STM8S001J3M3 in new layouts or redesign the PCB. The 5 V I/O tolerance simplifies interface to legacy 5 V sensors, and the SWIM debug interface enables faster bring-up than the ATtiny85 ISP path.
推荐
IR Remote Transmitters and Receivers
The STM8S001J3M3's two 16-bit timers are ideal for generating accurate 38 kHz / 56 kHz carrier waveforms for IR remote control. The 8-pin SOIC footprint fits inside a CR2032 battery holder for coin-cell-powered TV remotes, wall controllers, or appliance remotes. With UART, SPI, and I2C available, the MCU can simultaneously drive the IR LED, decode RC5/SIRC protocols, and accept commands from an external sensor. The 1.8-5.5 V operating range (functional down to 1.8 V when LVDOFF is set) extends coin-cell battery life versus 5 V-only competitors.
推荐
Smart LED Controllers and PWM Drivers
The STM8S001J3M3 drives single-channel or two-channel LED strips directly from its 20 mA GPIO pins, and the 16-bit timers generate hardware PWM with sub-microsecond resolution for color mixing. With the 10-bit ADC on board, the same chip can read an ambient light sensor or potentiometer and close the brightness feedback loop without external parts. The 8-pin SOIC footprint fits inside a small inline LED controller module, and the 5 V I/O tolerance interfaces directly to WS2812 / SK6812 addressable LED data lines via bit-banged SPI.
推荐
Industrial Sensor Interface Front-Ends
The STM8S001J3M3's 10-bit ADC, 5 V I/O tolerance, and -40C to +125C operating range make it a viable front-end MCU for industrial 4-20 mA loop sensors, thermistor bridges, and opto-isolated digital inputs. The integrated UART bridges to RS-485 transceivers for fieldbus nodes, while the SWIM debug interface simplifies production line programming via standardized tools. A typical implementation uses one ADC channel for a temperature sensor, one for a digital potentiometer wiper, and one UART line for an isolated RS-485 link.
推荐
Brushless DC and Stepper Motor Controllers
The STM8S001J3M3 is a budget controller for small single-coil or two-coil brushed DC motors, fans, and micro stepper drivers where only 1-2 PWM channels are needed. The 16-bit timers deliver up to 16 MHz PWM resolution, enabling silent commutation at 20+ kHz. The 5 V I/O tolerance interfaces directly to half-H or half-bridge gate drivers such as the L293D or DRV8871, and the integrated brown-out reset prevents motor glitches during supply dips. For multi-channel BLDC, designers step up to the STM8S003F3 or STM32G031 in larger packages.
推荐
Hobbyist and Educational Platforms (STM8 eForth)
The STM8S001J3M3 is the chip behind the popular STM8 eForth educational project, where the 8 KB Flash and 1 KB SRAM host a complete Forth interpreter plus user code. The 8-pin SOIC fits inside a through-hole breakout the size of a DIP-8 socket, making hand-solderable breadboard-friendly modules. The SWIM debug interface is supported by the free STVD and Cosmic CXSTM8 toolchains, plus open-source SDCC and Forth compilers, making the chip a low-cost learning platform for embedded programming.
推荐
推荐产品汇总
工程参考数据： STM8S001J3M3 ——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 | STM8S001J3M3TR | STM8L051J3M3 |
|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | SOIC-8 (SO-8 / SO8N) | SOIC-8 (SO-8 / SO8N) - same | SOIC-8 (SO-8 / SO8N) - same |
| Core | STM8S 8-bit | STM8S 8-bit - same | STM8L 8-bit (low-power) |
| CPU Clock | 16 MHz | 16 MHz - same | 16 MHz - same |
| Flash Memory | 8 KB | 8 KB - same | 8 KB - same |
| SRAM | 1 KB | 1 KB - same | 1 KB - same |
| EEPROM | 128 bytes | 128 bytes - same | 256 bytes (different family) |
| ADC Resolution | 10-bit | 10-bit - same | 12-bit |
| Supply Voltage | 2.95 V to 5.5 V | 2.95 V to 5.5 V - same | 1.65 V to 3.6 V |
关键差异点
- Lowest-cost mainstream STM8S MCU in 8-pin SOIC （对比 STM8S003F3P6 (TSSOP-20))
- Tape-and-reel variant for SMT assembly （对比 STM8S001J3M3 (tube))
- Pin-compatible STM8L migration path （对比 STM8L051J3M3 (SOIC-8))
设计说明
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 8), with the ground return via the shortest path to pin 4. The 8-pin SOIC has no internal power plane, so keep the VDD trace wide and short. Place the optional 10 uF bulk capacitor within 1 cm of the IC if the supply is shared with high-current peripherals.
Pin 1 (NRST) is mandatory and cannot be used as GPIO on the STM8S001J3M3 even though the datasheet lists an alternate-function variant in the GPIO table. Driving NRST low for >1 us resets the device. Leave the SWIM debug pin accessible during prototyping (typically via a 4-pin header on PA1, PA2, PA3, GND) to avoid rework when you need to reflash firmware.
The 8-pin SOIC has only 6 usable GPIOs. Reserve at least one pin for SWIM debug and one for the UART bootloader, leaving 4 pins for application logic. If your design needs more I/O, choose the STM8S003F3P6 (TSSOP-20) for 15 GPIOs instead of using multiplexed analog/digital tricks that complicate firmware.
合规信息
RoHS and REACH compliant per ST product page. Not AEC-Q100 qualified - the STM8S001J3M3 is intended for industrial/consumer use; for automotive designs choose a Q100-qualified STM8 or STM32 variant.
