STMicroelectronics

STM8S103F3P6 - 8-bit 16MHz MCU, 8KB Flash, 20-TSSOP | STMicroelectronics

Артикул: STM8S103F3P6 ✓ Активен

В наличии Отправка в течение 1–3 рабочих дней

2.95 V to 5.5 V Vdss 20-TSSOP Package 16 MHz Speed 8 KB Memory

От $0.92 USD / шт.

MOQ: 1 |

Цена обновлена: 2026-10-20

Оптовые цены

Кол-во	Цена за ед.	Итого
1	$1.85	$1,85
10	$1.62	$16,20
100	$1.28	$128,00
500	$1.05	$525,00
1.000	$0.92	$920,00

ℹ️ Все цены указаны в USD

Открыть datasheet (PDF) Смотреть аналоги

Количество

STM8S103F3P6 Обзор

The STMicroelectronics STM8S103F3P6 is an access-line 8-bit microcontroller from the STM8S family, featuring a 16 MHz STM8 core, 8 KB of Flash program memory, and an integrated true data EEPROM, housed in a 20-pin TSSOP package. The device delivers 1 Kbyte of SRAM, a 10-bit ADC, three 16-bit timers, plus UART, SPI, and I²C communication interfaces, with 16 programmable I/O pins for general-purpose use. Operating from a 2.95 V to 5.5 V supply, the STM8S103F3P6 provides a balance of small footprint, low power, and rich peripherals for cost-sensitive embedded designs.

An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripheral interfaces. The STM8 core uses an advanced Harvard architecture with a 16-bit instruction word and 32-bit program counter extension for efficient code density. The "Access line" designation indicates this part targets cost-optimized designs with sufficient peripherals for general control tasks. This positions the STM8S103F3P6 within the broader taxonomy: MCU -> 8-bit microcontroller -> STM8 family -> STM8S access line -> STMicroelectronics 8-bit portfolio.

Key features include 8 KB Flash with in-application programming (I2AP) capability, 640-byte true data EEPROM rated for 300 k write/erase cycles, a 10-bit ADC with up to 5 channels, and a 4-channel 16-bit PWM/timer structure supporting capture, compare, and one-pulse modes. The integrated SWIM debug interface and on-chip watchdog with window option simplify development and field reliability. The 20-pin TSSOP package offers a compact 6.5 mm × 4.4 mm footprint suitable for space-constrained PCBs.

Typical applications include low-cost consumer appliances, sensor interface nodes, LED lighting controllers, battery chargers, simple motor drivers, and replacement of legacy 8051 or PIC16 designs. The wide 2.95-5.5 V supply range also supports 3.3 V and 5 V industrial systems without level shifters.

Designers should note that the STM8S103F3P6 (industrial grade, -40 °C to 85 °C) and the STM8S003F3P6 differ in feature set; the '103 part includes a beeper and AWU peripherals absent on the '003. For higher memory needs, the STM8S105 series provides 32 KB Flash in larger packages. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone.

Аналоги без доработки для STM8S103F3P6 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с STM8S103F3P6 (тот же форм-фактор и посадочное место) — отличается по Core, Operating Temperature, Package, ADC Resolution, Communication Interfaces.

STM8S003F3P6

STMicroelectronics

Core: STM8 8-bit

Operating Temperature: -40C to +85C

ADC Resolution: 10-bit, 5 channels

Сравнить с STM8S103F3P6 →

STM8S003F3P6TR

STMicroelectronics

Core: STM8 8-bit CISC

Operating Temperature: -40C to +85C

Package: TSSOP-20

Сравнить с STM8S103F3P6 →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

STM8S103F2P6

✅ Прямая замена

📦 20-TSSOP

Flash reduced from 8 KB to 4 KB (-50%), same 20-TSSOP pinout and STM8S peripherals

📋 Справочный аналог (нет в каталоге)

STM8S003F3P6

✅ Прямая замена

STMicroelectronics

📦 20-TSSOP

STM8 8-bit · 16 MHz · 16 MIPS · 8 KB · 1 KB · 128 bytes · 2.95 V to 5.5 V · 7

✓ В наличии

$0.36 / шт.

Открыть даташит →

STM8S103F3P6TR

✅ Прямая замена

📦 20-TSSOP

same die, tape-and-reel packaging code only - identical electrical specs and pinout

📋 Справочный аналог (нет в каталоге)

ℹ️ 1 компонент(ы) в другом корпусе скрыт(ы) — другой корпус требует переработки PCB и не является полноценной заменой без доработки. Свяжитесь с нами если вам нужны предложения по другим корпусам.

STM8S103F3P6 Максимальные параметры и электрические характеристики

Core	STM8 8-bit (Harvard architecture)
Максимальная тактовая частота	16 MHz
Program Memory (Flash)	8 KB
Data EEPROM	640 B
RAM	1 KB
Data EEPROM Endurance	300 k cycles
Supply Voltage Range	2.95 V to 5.5 V
Рабочая температура	-40 °C to +85 °C
Number of I/O Pins	16
ADC	10-bit, up to 5 channels
Timers	3 × 16-bit (TIM1, TIM2, TIM4)
Communication Interfaces	UART, SPI, I²C
Корпус	20-TSSOP
Debug Interface	SWIM (single-wire)
Watchdog	Window watchdog + independent WDG
Тип монтажа	Surface Mount

Конфигурация выводов STM8S103F3P6

Контакт 1	VDD — Supply voltage (2.95 V to 5.5 V)
Контакт 2	PA1 — Port A bit 1 / SWIM data
Контакт 3	PA2 — Port A bit 2 / oscillator output
Контакт 4	PD1 — Port D bit 1
Контакт 5	PB0 — Port B bit 0 / AIN0 / TIM1_CH1N
Контакт 6	PB1 — Port B bit 1 / AIN1
Контакт 7	PB2 — Port B bit 2 / AIN2
Контакт 8	PB3 — Port B bit 3 / AIN3
Контакт 9	PB4 — Port B bit 4 / AIN4
Контакт 10	PB5 — Port B bit 5 / BEEPER output
Контакт 11	PB6 — Port B bit 6 / I²C SDA
Контакт 12	PB7 — Port B bit 7 / I²C SCL
Контакт 13	PC1 — Port C bit 1 / TIM1_CH1
Контакт 14	PC2 — Port C bit 2 / TIM1_CH2
Контакт 15	PC3 — Port C bit 3 / TIM1_CH3
Контакт 16	PC4 — Port C bit 4 / TIM1_CH4
Контакт 17	PC5 — Port C bit 5 / SPI SCK
Контакт 18	PC6 — Port C bit 6 / SPI MOSI
Контакт 19	PC7 — Port C bit 7 / SPI MISO
Контакт 20	VSS — Ground

Типичное применение

STM8S103F3P6 подходит для 6 применениеs: Consumer Appliance Control, LED Lighting Driver, Battery Charger Controller, Sensor Interface Module, Replacement for Legacy 8051 / PIC16 Designs, Simple Motor Driver / BLDC Companion.

🏭

Consumer Appliance Control

The STM8S103F3P6 fits cost-sensitive white-goods and small-appliance controllers thanks to its 8 KB Flash, 16 MHz core, and integrated peripherals that replace discrete glue logic. With 16 GPIO pins, a beeper driver, and a 10-bit ADC for sensing temperature or voltage, the part handles keypad scanning, triac zero-cross control, and indicator PWM in a single chip. Typical subsystems: washing-machine user interface, microwave keypad, fan speed controller, and rice-cooker thermostat.

Рекомендуется

💡

LED Lighting Driver

The STM8S103F3P6 drives multichannel LED lighting by combining its 4-channel 16-bit PWM timer with 10-bit ADC feedback for closed-loop current regulation. The 5.5 V tolerance supports 5 V analog reference designs for photometric sensors, while the 16 MHz core is fast enough to run DMX-style or PWM-dim protocols. Integrated beeper can signal fault conditions without an extra timer.

Рекомендуется

STM8S103F2P6 (Lower-memory variant for simple single-channel LED drivers) STM8S105K4T6C (Higher-memory sibling if richer LED effects are required)

⚡

Battery Charger Controller

For NiMH, Li-ion, or lead-acid charger designs, the STM8S103F3P6 offers the ADC for V/I sensing, a PWM channel for synchronous buck or linear regulation, and the AWU peripheral for sleep-mode monitoring. The 640-byte true EEPROM stores charging profiles and cycle counters without external memory. UART output can report state to a host MCU or BLE module.

Рекомендуется

STM8S003F3P6 · STMicroelectronics STM8L050J3M3 (Ultra-low-power STM8L alternative for standby-current-critical chargers)

🧩

Sensor Interface Module

Industrial sensor nodes leverage the STM8S103F3P6 I²C/SPI master capability plus the 10-bit ADC to read multiple analog and digital sensors. UART enables Modbus RTU slave communication on RS-485 segments, and the 8 KB Flash holds calibration tables for thermocouple or bridge-sensor linearization. The -40 °C to +85 °C industrial range supports outdoor and factory-floor deployment.

Рекомендуется

STM8S105C6T6 · STMicroelectronics STM8S207RBT6 (High-performance STM8S for higher-speed sensor processing)

🔧

Replacement for Legacy 8051 / PIC16 Designs

Designers moving legacy 8051 or PIC16 firmware gain a modern toolchain and on-chip peripherals when migrating to the STM8S103F3P6. With 8 KB Flash, 1 KB RAM, three timers, and a SWIM debug interface, it covers most small-control applications while offering better interrupt latency and a true C compiler. The 20-TSSOP package drop-in fits existing 8051 footprints when the OEM PCB was designed for an SOP-20 MCU.

Рекомендуется

STM8S103F2P6 (Smaller Flash variant when code shrinks) STM8S003F3P6 · STMicroelectronics

🏭

Simple Motor Driver / BLDC Companion

The STM8S103F3P6 acts as a user-interface and safety companion to a dedicated motor-driver IC in low-power BLDC, stepper, or brushed-DC applications. It runs PWM command generation, button/encoder input, fault monitoring via ADC, and UART comms to a host controller. The beeper provides audible stall alarms without external timer hardware.

Рекомендуется

STM8S105C6T6 · STMicroelectronics L6234PD (ST motor-driver companion IC for BLDC)

Сводка рекомендуемых товаров

STM8S003F3P6 STMicroelectronics Используется в: Consumer Appliance Control, Battery Charger Controller, Replacement for Legacy 8051 / PIC16 Designs STM8S105C6T6 STMicroelectronics Используется в: Consumer Appliance Control, Sensor Interface Module, Simple Motor Driver / BLDC Companion STM8S103F2P6 Lower-memory variant for simple single-channel LED drivers Используется в: LED Lighting Driver, Replacement for Legacy 8051 / PIC16 Designs STM8S105K4T6C Higher-memory sibling if richer LED effects are required Используется в: LED Lighting Driver STM8L050J3M3 Ultra-low-power STM8L alternative for standby-current-critical chargers Используется в: Battery Charger Controller STM8S207RBT6 High-performance STM8S for higher-speed sensor processing Используется в: Sensor Interface Module L6234PD ST motor-driver companion IC for BLDC Используется в: Simple Motor Driver / BLDC Companion

What is the core architecture and clock speed of STM8S103F3P6?

The STM8S103F3P6 uses the STMicroelectronics STM8 8-bit Harvard-architecture core running at up to 16 MHz from the internal HSI RC or an external crystal. According to the STMicroelectronics datasheet, the core executes most instructions in 1 to 2 internal clock cycles, giving an effective 16 MIPS throughput and C-like code density thanks to its 16-bit instruction word. This makes the part well suited for cost-sensitive real-time control.

How much Flash and RAM does STM8S103F3P6 have?

The STM8S103F3P6 integrates 8 KB of single-voltage Flash for program storage and 1 KB of SRAM for working data, plus 640 bytes of true EEPROM for non-volatile parameter storage rated for 300 k erase/write cycles. The Flash supports in-application programming (IAP) via boot ROM and read-while-write (RWW), letting firmware update a parameter block without halting execution.

Where can I buy STM8S103F3P6 and what is the current price?

STM8S103F3P6 is in active distribution at DigiKey, Mouser, and major distributors as of 2026-10-20. XAIPART tier pricing shows a 1-piece unit price of approximately USD 1.85 with volume breaks dropping to roughly USD 0.92 at 1000 pieces. Stock is generally plentiful; the part is not EOL and ships from STMicroelectronics on standard lead times.

Is STM8S103F3P6 in stock and what is the lead time?

Yes, STM8S103F3P6 is in stock at authorized distributors as of 2026-10-20 with typical lead times of 6 to 10 weeks from STMicroelectronics for bulk orders. The 'F3P6' suffix indicates the 20-pin TSSOP industrial-grade (-40 °C to +85 °C) variant, the most commonly stocked option in the STM8S103 access line.

What is the difference between STM8S103F3P6 and STM8S003F3P6?

STM8S103F3P6 includes beeper and AWU (auto-wakeup unit) peripherals that are absent on the STM8S003F3P6. Both share the same STM8 core at 16 MHz, 8 KB Flash, 1 KB SRAM, and 20-pin TSSOP package, making them pin-compatible for most designs. The '003 part is a cost-down version; the '103 part adds the extra peripherals plus a slightly higher maximum HSI trim accuracy per the ST datasheet.

What is the difference between STM8S103F3P6 and STM8S103F3P3?

The STM8S103F3P3 ships in a 20-pin TSSOP without the -40 °C to +85 °C industrial temperature range, typically rated for 0 °C to 70 °C commercial grade. The STM8S103F3P6 is the industrial-grade version with the wider -40 °C to +85 °C range. Electrical specs, Flash/RAM, and pinout are otherwise identical, so the parts are drop-in compatible for commercial-temperature applications.

Can STM8S103F3P3 replace STM8S103F3P6?

The STM8S103F3P3 is NOT a direct drop-in replacement for the STM8S103F3P6 if your design requires industrial -40 °C to +85 °C operation, because the P3 variant is commercial-grade 0 °C to 70 °C. For commercial-temperature applications they share the same pinout, package, and electrical specs, so the P3 part will work. Always verify the ambient temperature range before substituting.

What is the best drop-in replacement for STM8S103F3P6?

The closest same-brand drop-in replacement is the STM8S103F2P6, which shares the 20-pin TSSOP footprint and STM8S access-line architecture but has 4 KB Flash instead of 8 KB. For full Flash parity, the STM8S103K3P6 pin-compatible option moves to a 32-pin package. Across brands, the PIC16F18444-I/ST (Microchip) is a parametric alternative but requires firmware porting due to different peripherals.

Where can I download the STM8S103F3P6 datasheet PDF?

The official datasheet is available from STMicroelectronics at the STM8S103F2/F3/K3 family datasheet URL (document covers STM8S103F3P6 together with F2 and K3 variants). The PDF document number and revision can be confirmed on the ST product page at st.com/en/microcontrollers-microprocessors/stm8s103f3.html. Mirror copies are also indexed on alldatasheet.com and digchip.com.

What is the pinout of STM8S103F3P6 in the 20-TSSOP package?

The 20-pin TSSOP pinout places VDD on pin 1 and VSS on pin 20 (TSSOP convention). Key signal pins include PA1/PA2/PA3 for SWIM debug and reset, PB5 for the beeper output, and PC3-PC7 for ADC inputs. Pin 1 is identified by the standard dot/notch marker on the TSSOP body; refer to the datasheet pinout diagram for full per-pin assignments.

What supply voltage does STM8S103F3P6 require?

The STM8S103F3P6 operates from a single 2.95 V to 5.5 V supply per the ST datasheet, making it compatible with both 3.3 V and 5 V rails. The internal voltage regulator derives all core voltages from VDD, so no external analog supply is needed. Brown-out reset is built in to protect Flash from low-voltage programming conditions.

What peripherals does STM8S103F3P6 include?

The STM8S103F3P6 includes a 10-bit ADC with up to 5 input channels, three 16-bit general-purpose timers (TIM1 advanced, TIM2 general, TIM4 basic), one UART, one SPI, one I²C, a window watchdog plus an independent watchdog, a beeper, and an auto-wakeup unit (AWU). GPIO counts 16 high-sink pins on Port A/B/C/D depending on package. The SWIM debug module is built in.

What can replace STM8S103F3P6 if it is out of stock?

If STM8S103F3P6 is unavailable, the closest same-package drop-in alternatives are the STM8S103F2P6 (4 KB Flash instead of 8 KB, same 20-TSSOP) or the STM8S003F3P6 (8 KB Flash, but missing beeper/AWU peripherals). For an upgrade path with more Flash, the STM8S105C6T6 (32 KB Flash, 48-pin LQFP) requires PCB rework. Cross-brand parametric alternatives include PIC16F18444-I/ST (Microchip) and ATtiny2313A-PU (Microchip) but require firmware porting.

Is STM8S103F3P6 suitable for low-power applications?

The STM8S103F3P6 supports wait, halt, and active-halt modes with the AWU peripheral enabling periodic wakeup from halt. Typical run current at 16 MHz / 5 V is roughly 4 mA and halt current is in the µA range per the ST datasheet. For ultra-low-power designs below 100 µA average, an STM8L or STM32L0 series part is recommended over the access-line STM8S103.

What is the Microchip equivalent for STM8S103F3P6?

There is no exact pin-compatible Microchip drop-in for the STM8S103F3P6 due to differing peripherals, debug interfaces (SWIM vs ICSP), and toolchains. The closest parametric alternative is the PIC16F18444-I/ST (20-pin TSSOP, 7 KB Flash, 10-bit ADC), but it requires firmware porting from STM8 assembly/C to XC8. For AVR migration the ATtiny441-MU is a 20-pin QFN/MCU candidate but again needs new code.

Справочные инженерные данные для STM8S103F3P6 — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the STM8S103F3P6 when you need an 8-bit MCU with 8 KB Flash, true EEPROM, three 16-bit timers, and beeper/AWU peripherals in a compact 20-TSSOP for industrial-grade designs (-40 °C to +85 °C). For lower cost in designs that do not need the beeper or auto-wakeup, the pin-compatible STM8S003F3P6 removes those peripherals. For tighter code footprints under 4 KB the STM8S103F2P6 is the same part with halved Flash. Cross-brand, no Microchip/PIC or Atmel/Microchip part is a true drop-in due to peripheral and debug differences - any cross-brand move requires firmware porting.

Сравнение с аналогами

Параметр	Этот товар	STM8S103F2P6	STM8S003F3P6	STM8S103F3P6TR
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Package	20-TSSOP	20-TSSOP - same	20-TSSOP - same	20-TSSOP - same
Flash Memory	8 KB	4 KB	8 KB	8 KB
RAM	1 KB	1 KB	1 KB	1 KB
EEPROM	640 B	640 B	640 B	640 B
Core Clock	16 MHz	16 MHz	16 MHz	16 MHz
Beeper Peripheral	Yes	Yes	No	Yes
Operating Temperature	-40 °C to +85 °C	-40 °C to +85 °C	-40 °C to +85 °C	-40 °C to +85 °C

Ключевые отличия

True data EEPROM on-chip (против STM8S003F3P6)
Higher Flash density vs F2 sibling (против STM8S103F2P6)
Industrial temperature grade as standard (против STM8S103F3P3)

Заметки по проектированию

The STM8S103F3P6 has internal voltage regulation derived from VDD; decouple VDD/VSS with a 100 nF ceramic capacitor placed within 5 mm of the pins plus a bulk 4.7 µF tantalum or electrolytic for switching transients. The AWU peripheral draws only a few µA from VDD in halt mode, but peripherals left clocked can multiply supply current. Activate PWR_HSITRIM_Q1..Q4 settings and disable unused peripherals in the CLK_PCKENR register to minimize run current.

For the 20-TSSOP package, route the SWIM pin (PA1) directly to a 4-pin test header to keep programming accessible without rework. Place the external reset pull-up (10 kΩ to VDD) close to the NRST pin if the application uses external reset. The 16 MHz HSE crystal or resonator, if used, should sit adjacent to pins PA1/PA2 with short symmetric traces and a ground guard ring for EMI robustness.

Do not confuse the STM8S103F3P6 (industrial -40 °C to +85 °C, with beeper/AWU) with the STM8S003F3P6 (no beeper/AWU) or STM8S103F3P3 (commercial 0 °C to 70 °C) - same package, different peripheral set or temperature grade. When migrating firmware from STM8S105 series, verify ADC channel count (5 vs 16) and timer resources. The SWIM debug interface is single-wire; do not add external pull-ups on PA1 that exceed 10 kΩ or debug will fail.

Информация о соответствии

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Без свинца

Yes

Без галогенов

Yes

Конфликтные минералы

Compliant

RoHS/REACH compliant per ST product page; AEC-Q100 not qualified (consumer/industrial grade); lead-free TSSOP package per JEDEC J-STD-020 MSL1

Данные проверены: 2026-10-20 — данные проверены и курируются командой компонентной инженерии XAIPART

Источники: Manufacturer Datasheet, Manufacturer Product Page, Distributor, Distributor, Distributor, Octopart, Octopart

Связанные компоненты & термины

STMicroelectronics STM8S103F3P6 STM8S103F2P6 STM8S003F3P6 STM8S103F3P6TR STM8 8-bit microcontroller MCU Access line Flash memory true EEPROM 10-bit ADC SWIM debug TSSOP UART SPI I2C Harvard architecture beeper auto-wakeup unit RoHS JEDEC J-STD-020 consumer appliance