STMicroelectronics STM8S001J3M3TR

Overview

STM8S001J3M3TR from STMicroelectronics is an 8-bit STM8 microcontroller in SO8N package, featuring 8-Kbyte Flash memory, 128-byte true data EEPROM, 10-bit ADC with up to 3 channels, UART/SPI/I²C interfaces, and three timers-including a 16-bit advanced control timer with dead-time insertion-targeted for cost-sensitive embedded control in industrial sensors and smart actuators.

For engineers reviewing the STM8S001J3M3TR datasheet, STM8S001J3M3TR pinout, STM8S001J3M3TR application, or STM8S001J3M3TR equivalent, key selection criteria include its 16 MHz max CPU frequency at 2.95–5.5 V supply, high-sink I/O capability (up to 20 mA per pin), SWIM single-wire debug interface, and low-power active-halt mode consuming <1.5 µA at 3.3 V.

Technical Context

The STM8S001J3M3TR implements a Harvard-architecture STM8 core with 3-stage pipeline and extended instruction set, enabling deterministic 16 MHz execution. Its clock system integrates three independent sources: external crystal, user-trimmable 16 MHz RC, and low-power 128 kHz RC-with clock security monitoring and flexible peripheral clock gating.

Interrupt handling uses a nested controller supporting 32 vectors and up to 5 external interrupts. Memory subsystem includes 1 Kbyte RAM, 8-Kbyte Flash with 20-year data retention at 55 °C, and 128-byte EEPROM rated for 100 k write/erase cycles-enabling robust firmware updates and parameter storage without external components.

Key Specifications

Pinout & Package

STM8S001J3M3TR is housed in an SO8N (8-lead plastic small outline) package measuring 4.9 × 6 mm with 150 mils body width, optimized for compact PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with STM8L051F3P6TR, STM8S001J3M3TR delivers stronger I/O drive and simpler debug integration; versus EFM8BB10F8G-A-QFN20, it offers smaller footprint and lower system-level BOM cost despite lower ADC resolution.

Availability

STM8S001J3M3TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart actuator modules, energy metering subsystems, and white goods UI controllers requiring stable component supply and long-term manufacturability.

Supply support for STM8S001J3M3TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM8S series targets cost-optimized 8-bit embedded control applications, emphasizing robustness, low power, and integrated peripherals for resource-constrained designs in industrial automation and appliance control.

FAQ

What is the maximum operating frequency of the STM8S001J3M3TR?

The STM8S001J3M3TR achieves a maximum CPU frequency of 16 MHz across its full operating voltage range (2.95 V to 5.5 V). This is supported by both the internal 16 MHz RC oscillator (user-trimmable to ±1%) and external clock sources. Electrical characteristics confirm stable operation up to 16 MHz at VDD ≥ 2.95 V, with fCPUmax scaling linearly with supply voltage per Figure 7 in DS12129 Rev 4.

Does the STM8S001J3M3TR support in-circuit debugging?

Yes, the STM8S001J3M3TR supports non-intrusive in-circuit debugging via its embedded Single-Wire Interface Module (SWIM). This requires only one dedicated pin (SWIM) and works with ST-LINK/V2 or compatible debug probes. SWIM enables full breakpoint control, register inspection, and Flash programming without halting real-time peripheral operation-critical for time-sensitive embedded applications.

Can the internal EEPROM be used for storing calibration data?

Yes, the 128-byte true data EEPROM is specifically designed for reliable parameter storage, with guaranteed endurance of 100,000 write/erase cycles and 20-year data retention at 55 °C. It supports byte-wise erase and write operations, making it suitable for storing sensor calibration coefficients, device IDs, or configuration flags that must persist across power cycles and field updates.

What are the key differences between STM8S001J3M3TR and STM8S003F3P6TR?

The STM8S001J3M3TR (SO8N, 8-pin) has fewer I/Os (5 total), no comparator, and no DAC, but includes high-sink outputs (20 mA) on four pins. The STM8S003F3P6TR (TSSOP20, 20-pin) offers 16 I/Os, a comparator, and DAC, but lacks high-sink capability. Both share identical core, Flash size, and peripheral sets except for package-dependent features-making the J3 optimal for ultra-compact, high-drive applications.