Item specifics
Description
The STM8S003F3P6 is a mainstream value line 8-bit MCU from STMicroelectronics, classified as a low-density device in the STM8S family reference manual (RM0016). Featuring a 16 MHz STM8 core with Harvard architecture and 3-stage pipeline, it integrates 8 KB Flash, 1 KB RAM, and 128-byte true data EEPROM (100k erase/write cycles). On-chip peripherals include a 10-bit ADC (5 channels with analog watchdog), 16-bit advanced control timer (3 complementary outputs with dead-time), 16-bit general-purpose timer, 8-bit basic timer, and UART/SPI/I2C interfaces. Packaged in TSSOP-20 with 16 I/Os, it operates from 2.95 V to 5.5 V over -40 °C to 85 °C. Ideal for industrial control, LED lighting, sensor modules, and cost-sensitive embedded applications.
Advanced Core: 16 MHz STM8 core, Harvard architecture, 3-stage pipeline, extended instruction set, up to 27 external interrupts on 6 vectors Memory: 8 KB Flash (20-year data retention at 55 °C after 100 cycles), 1 KB RAM, 128-byte true data EEPROM (100k write/erase cycles) 10-bit ADC: Up to 5 multiplexed channels, ±1 LSB accuracy, scan mode, analog watchdog Advanced Control Timer: 16-bit, 3 complementary outputs, dead-time insertion, flexible synchronization General-Purpose Timer: 16-bit, 3 CAPCOM channels (IC, OC or PWM); 8-bit basic timer with prescaler Communication Interfaces: UART (SmartCard/IrDA/LIN master mode), SPI (up to 8 Mbit/s), I2C (up to 400 Kbit/s) Clock System: 4 master clock sources (external clock, crystal oscillator, user-trimmable 16 MHz RC, low-power 128 kHz RC), clock security system with monitor High Reliability: Low-consumption POR/PDR, highly robust I/O design immune against current injection TSSOP-20 Package: 16 I/Os including high-sink outputs Wide Operating Range: 2.95 V to 5.5 V, -40 °C to 85 °C Development Support: Embedded SWIM single-wire interface for fast on-chip programming and non-intrusive debugging
Industrial Control: PLCs, sensor transmitters, RS-485 communication nodes, reliable across wide temperature LED Lighting: Dimming control, RGB strips, switching power supplies, direct PWM drive Battery Management: Protection boards, fuel gauges, charge management; low-power modes reduce standby Home Appliances: Induction/microwave oven panels, small appliance main controllers Sensor Modules: Temperature/humidity/gas sensing, 10-bit ADC + I2C/UART flexible networking Consumer Electronics: Remote controls, electric toothbrushes, electronic toys; high-value 20-pin solution Motor Control: Fans, pumps, small motors, advanced timer with complementary PWM and dead-time
Ultra-Cost-Effective: 8 KB Flash + 1 KB RAM + 128 B true EEPROM + 10-bit ADC + 3 timers + UART/SPI/I2C in a 20-pin TSSOP package, minimizing BOM cost True EEPROM: 128-byte true data EEPROM with 100k write/erase cycles, reliably storing calibration parameters without external memory ICs Advanced Timer for Motor Control: 3 complementary outputs with dead-time insertion, driving half-bridge circuits and motor control Robust & Reliable: 4 clock sources + clock security system, low-consumption POR/PDR, highly robust I/Os for stable industrial operation Mature Ecosystem: STM8 classic architecture, rich documentation, low-cost SWIM debug, shortening development cycles Stable Supply Chain: STMicroelectronics mainstream value line with massive global shipments, ensuring stable supply
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FAQ:
What is the STM8S003F3P6 and its key specifications?
The STM8S003F3P6 is an 8‑bit microcontroller from STMicroelectronics based on the STM8 core at up to 16 MHz. It provides 8 KB of Flash program memory, 1 KB of SRAM, and 128 bytes of true data EEPROM. On‑chip peripherals include a 10‑bit ADC, a 16‑bit advanced timer (TIM1, without complementary outputs), general‑purpose timers (TIM2, TIM4), and communication interfaces: UART, SPI, I2C. Housed in an easy‑to‑solder TSSOP‑20 package, it provides 16 I/O pins and operates over ‑40 °C to +85 °C. As a member of the STM8S Value line, it is one of the most popular ultra‑low‑cost MCUs for basic embedded applications.
How does the STM8S003F3P6 differ from the STM8S103F3P6?
Both are pin‑compatible in the same TSSOP‑20 package and share the same Flash (8 KB) and RAM (1 KB). The main difference lies in the EEPROM size: the S003F3P6 provides 128 bytes of true EEPROM, while the S103F3P6 offers a larger 640‑byte EEPROM. The S103 may also have slightly better electrical characteristics. If your application only needs to store a few calibration constants, the S003F3P6 is the most cost‑optimized choice; choose the S103 if you need frequent or larger parameter storage.
What is the difference between STM8S003F3P6 and STM8S003F3U6?
Electrically and functionally they are identical — same 8 KB Flash, 1 KB SRAM, 128 bytes EEPROM, and same peripherals. The only difference is the package: the F3P6 uses a TSSOP‑20 (6.5 mm × 4.4 mm), while the F3U6 comes in an ultra‑small UFQFPN20 (3×3 mm QFN). Choose the F3P6 for easy hand‑soldering and prototyping; pick the F3U6 when board space is extremely tight and reflow soldering is available.
Can the STM8S003F3P6 drive a brushless DC motor?
No. Although it includes an advanced timer TIM1, this version does not generate complementary PWM outputs with dead‑time insertion. It can produce up to four independent PWM channels, which are suitable for controlling DC motors, servos, LED dimming, or simple switching converters. For three‑phase BLDC motor control, you must use an external gate driver with built‑in dead‑time or choose a microcontroller like the STM8S105 or STM8S207 that has a full complementary TIM1.
What are the ADC specifications and how many analog channels does the STM8S003F3P6 have?
It features a 10‑bit successive‑approximation ADC. In the TSSOP‑20 package, up to 5 external analog input channels (AIN0 through AIN4) are typically available, as the pins are shared with digital I/Os. The ADC can also measure an internal voltage reference. This limited analog input count is typical for an entry‑level 20‑pin MCU, so plan your sensor connections accordingly.
How much memory does the STM8S003F3P6 have?
It provides 8 KB of Flash program memory, 1 KB of SRAM, and 128 bytes of true data EEPROM. This compact memory configuration is ideal for simple sensor nodes, small appliances, and basic controllers that do not require large code or data storage.
What package does the STM8S003F3P6 use and how many I/O pins are there?
It comes in a TSSOP‑20 package (6.5 mm × 4.4 mm, 0.65 mm lead pitch) and provides 16 general‑purpose I/O pins. The gull‑wing leads are very easy to hand‑solder, making this package extremely popular for rapid prototyping and hobbyist projects.
Can the STM8S003F3P6 be powered directly from 5 V?
Yes, it is a true 5 V‑capable microcontroller. The operating voltage range is 2.95 V to 5.5 V, so you can power it directly from a standard 5 V rail, USB, or a loosely regulated supply. All I/O pins are 5 V tolerant, which simplifies interfacing with legacy TTL and CMOS logic.
How to program and debug the STM8S003F3P6?
Programming and debugging use the single‑wire SWIM interface. A low‑cost ST‑LINK/V2 is the standard tool. Firmware can be developed with STVD + Cosmic C or the open‑source SDCC compiler, and ST provides standard peripheral libraries to speed up development.
What are the most typical applications of the STM8S003F3P6?
Thanks to its ultra‑low cost, 5 V operation, and easy‑to‑solder TSSOP‑20 package, the STM8S003F3P6 is immensely popular in small home appliances, toys, simple sensor nodes, battery chargers, LED controllers, and general‑purpose 8‑bit control. It is one of the most widely used entry‑level MCUs for both high‑volume products and hobbyist designs.