STMicroelectronics

STM8S003F3P6 - 8-bit MCU, 8KB Flash, 16MHz | STMicroelectronics

Name: STM8S003F3P6
Brand: STMicroelectronics
Price: 0.285 USD
Availability: InStock

MPN: STM8S003F3P6 ✓ Active

In Stock Ships in 1-3 business days

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

From $0.285 USD / Unit

MOQ: 1 |

Price updated: 2026-08-06

Volume Pricing

Qty	Unit Price	Extended
1	$0.592	$0.59
10	$0.44	$4.40
100	$0.317	$31.70
500	$0.293	$146.50
1,000	$0.285	$285.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM8S003F3P6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM8S003F3P3

Same die and package, but P3 suffix indicates a different ordering code; pin-to-pin compatible

📋 Reference alternative (not in catalog)

STM8S103F3P6

Same package and pinout, but has 8 KB Flash and 1 KB RAM, same as STM8S003F3P6; minor differences in peripheral set

📋 Reference alternative (not in catalog)

STM8S103F3P3

Same package and pinout, but P3 suffix indicates a different ordering code; pin-to-pin compatible

📋 Reference alternative (not in catalog)

STM8S003F3P6 Maximum Ratings & Electrical Characteristics

Core	STM8 8-bit
Maximum Clock Frequency	16 MHz
Flash Memory	8 KB
RAM	1 KB
EEPROM	640 bytes
Supply Voltage	2.95 V to 5.5 V
ADC Resolution	10-bit
ADC Channels	5
UART	1
SPI	1
I2C	1
Timers	1x 16-bit, 1x 8-bit
Watchdog Timer	Yes
Operating Temperature	-40C to +85C
Package	TSSOP-20
Mounting Type	Surface Mount
RoHS Status	Compliant

STM8S003F3P6 Pin Configuration

Pin 1	PD4 — Port D4, general purpose I/O
Pin 2	PD5 — Port D5, general purpose I/O
Pin 3	PD6 — Port D6, general purpose I/O
Pin 4	NRST — Reset (active low)
Pin 5	PA1 — Port A1, general purpose I/O
Pin 6	PA2 — Port A2, general purpose I/O
Pin 7	VSS — Ground
Pin 8	VDD — Power supply
Pin 9	PA3 — Port A3, general purpose I/O
Pin 10	PB5 — Port B5, general purpose I/O
Pin 11	PB4 — Port B4, general purpose I/O
Pin 12	PC3 — Port C3, general purpose I/O
Pin 13	PC4 — Port C4, general purpose I/O
Pin 14	PC5 — Port C5, general purpose I/O
Pin 15	PC6 — Port C6, general purpose I/O
Pin 16	PC7 — Port C7, general purpose I/O
Pin 17	PD0 — Port D0, general purpose I/O
Pin 18	PD1 — Port D1, general purpose I/O
Pin 19	PD2 — Port D2, general purpose I/O
Pin 20	PD3 — Port D3, general purpose I/O

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM8S003F3P6 is suitable for 6 applications: Home Appliances, Industrial Control, Consumer Electronics, Sensor Interfaces, Battery-Powered Devices, Automotive Aftermarket.

🏠

Home Appliances

The STM8S003F3P6 is ideal for home appliances such as washing machines, microwaves, and refrigerators. Its wide operating voltage range (2.95V to 5.5V) allows direct connection to 5V power supplies commonly used in these appliances. The integrated EEPROM stores user settings and calibration data, while the 16-bit timer generates PWM signals for motor speed control. The robust I/O structure withstands electrical noise typical in household environments. With 8 KB Flash, it can handle complex control algorithms and user interface logic. The low-power Halt mode reduces energy consumption when the appliance is in standby, meeting energy efficiency regulations. The device's reliability and long-term availability make it a preferred choice for mass-produced appliances.

Recommended

L6230 (Motor driver for appliance motors) VIPer12A (Power supply for appliance control board)

🏭

Industrial Control

In industrial control systems, the STM8S003F3P6 serves as a cost-effective controller for sensors, actuators, and simple automation tasks. Its 10-bit ADC with 5 channels can read analog sensors such as temperature, pressure, and light. The UART interface enables communication with PLCs or host controllers via RS-485. The SPI and I2C interfaces allow connection to external EEPROMs, ADCs, or display drivers. The device operates over the industrial temperature range of -40C to +85C, ensuring reliable operation in harsh environments. The watchdog timer enhances system reliability by resetting the MCU in case of software faults. The 16 MHz clock provides sufficient processing power for real-time control loops. The TSSOP-20 package is compact, saving PCB space in space-constrained industrial modules.

Recommended

ST485 (RS-485 transceiver for industrial communication) L78L05 (5V regulator for MCU power supply)

📱

Consumer Electronics

The STM8S003F3P6 is widely used in consumer electronics such as remote controls, toys, and small appliances. Its low cost and small footprint make it ideal for high-volume products. The internal RC oscillator eliminates the need for an external crystal, reducing component count and cost. The device supports various low-power modes, extending battery life in portable devices. The I2C interface can connect to sensors like accelerometers or temperature sensors for smart features. The 8 KB Flash is sufficient for firmware that handles button debouncing, LED control, and communication protocols. The wide voltage range allows operation from two AA batteries (3V) or a USB 5V supply. The STM8S003F3P6's robust ESD protection ensures reliability in consumer environments.

Recommended

LD39015 (Low-dropout regulator for battery-powered devices) LIS3DH (Accelerometer for motion detection)

🧩

Sensor Interfaces

The STM8S003F3P6 is an excellent choice for sensor interface modules that condition and digitize analog signals. Its 10-bit ADC with 5 channels can directly interface with analog sensors such as thermistors, photodiodes, and strain gauges. The device's low power consumption is beneficial for battery-powered sensor nodes. The UART or I2C interface can transmit sensor data to a central hub or gateway. The integrated EEPROM can store calibration coefficients, ensuring accurate measurements over time. The 16 MHz clock allows fast sampling rates for dynamic signals. The small TSSOP-20 package is suitable for compact sensor modules. The device's wide voltage range accommodates various sensor supply voltages, simplifying power design.

Recommended

TMP36 (Temperature sensor for analog input) HTS221 · STMicroelectronics

🔋

Battery-Powered Devices

The STM8S003F3P6 is well-suited for battery-powered devices such as portable instruments, wireless sensors, and remote controls. Its low-power Halt mode consumes only 1 µA, extending battery life significantly. The device can wake up from Halt mode via external interrupts or the watchdog timer. The internal RC oscillator allows quick startup, reducing time-to-first-instruction. The wide operating voltage range (2.95V to 5.5V) allows direct operation from 3V coin cells or 2xAA batteries. The integrated EEPROM stores configuration data without external memory. The 8 KB Flash is sufficient for firmware that manages power-saving algorithms and communication protocols. The compact TSSOP-20 package minimizes PCB area, enabling miniaturized designs.

Recommended

STBC08 (Battery charger IC for rechargeable batteries) LDK120 (Low quiescent current LDO for power management)

🚗

Automotive Aftermarket

In automotive aftermarket applications, the STM8S003F3P6 is used in devices like car alarm systems, tire pressure monitoring, and dashboard displays. Its wide voltage range (2.95V to 5.5V) handles the varying supply voltage in vehicles (9V to 16V with voltage regulators). The device's robust I/O structure withstands automotive electrical noise and transients. The 10-bit ADC can read analog sensors like temperature or pressure. The UART interface enables communication with other vehicle modules. The device operates over the -40C to +85C temperature range, suitable for under-hood or cabin environments. The integrated EEPROM stores user preferences and calibration data. The STM8S003F3P6's low cost makes it attractive for aftermarket products where cost is a key factor.

Recommended

L5973D (Step-down switching regulator for automotive power) VNQ7004 (High-side driver for automotive loads)

Recommended Products Summary

L6230 Motor driver for appliance motors Used in: Home Appliances VIPer12A Power supply for appliance control board Used in: Home Appliances ST485 RS-485 transceiver for industrial communication Used in: Industrial Control L78L05 5V regulator for MCU power supply Used in: Industrial Control LD39015 Low-dropout regulator for battery-powered devices Used in: Consumer Electronics LIS3DH Accelerometer for motion detection Used in: Consumer Electronics TMP36 Temperature sensor for analog input Used in: Sensor Interfaces HTS221 STMicroelectronics Used in: Sensor Interfaces STBC08 Battery charger IC for rechargeable batteries Used in: Battery-Powered Devices LDK120 Low quiescent current LDO for power management Used in: Battery-Powered Devices L5973D Step-down switching regulator for automotive power Used in: Automotive Aftermarket VNQ7004 High-side driver for automotive loads Used in: Automotive Aftermarket

What is the operating voltage range of STM8S003F3P6?

The STM8S003F3P6 operates from 2.95V to 5.5V. According to the ST datasheet, this wide range allows the MCU to be used in both 3.3V and 5V systems without external level shifting.

How much Flash memory does STM8S003F3P6 have?

The STM8S003F3P6 has 8 KB of Flash memory. This is sufficient for small to medium embedded applications such as sensor interfaces and simple control loops.

What is the maximum clock frequency of STM8S003F3P6?

The STM8S003F3P6 operates at a maximum clock frequency of 16 MHz. At this frequency, it can execute up to 16 MIPS, providing adequate performance for many real-time control applications.

Does STM8S003F3P6 have an internal oscillator?

Yes, the STM8S003F3P6 includes an internal 16 MHz RC oscillator with ±2% accuracy over temperature. This eliminates the need for an external crystal in many applications, reducing BOM cost.

What is the difference between STM8S003F3P6 and STM8S003F3P3?

The STM8S003F3P6 and STM8S003F3P3 are essentially the same device, but the P6 suffix indicates a different package variant. The STM8S003F3P6 is in a TSSOP-20 package, while the P3 variant is in a DIP-20 package. Both have identical core, memory, and peripheral specifications.

Can STM8S003F3P6 be used for motor control?

Yes, the STM8S003F3P6 can be used for simple motor control applications. It has a 16-bit timer with PWM output, which can drive a motor driver IC. However, for more complex motor control with field-oriented control (FOC), a more powerful MCU like the STM32 series is recommended.

What is the price of STM8S003F3P6?

As of 2026-08-05, the price of STM8S003F3P6 is approximately $0.85 for single-unit quantities, dropping to $0.55 at 1000 units. Prices may vary by distributor and order volume.

Where can I buy STM8S003F3P6?

STM8S003F3P6 is available from major distributors such as DigiKey, Mouser, and Farnell. You can also purchase directly from STMicroelectronics' authorized distributors. Check stock availability on their websites for current inventory.

What is the lead time for STM8S003F3P6?

The typical lead time for STM8S003F3P6 is 8-12 weeks for large orders, but small quantities are usually in stock at distributors. As of 2026-08-05, DigiKey and Mouser show stock available for immediate shipment.

Is STM8S003F3P6 in stock?

As of 2026-08-05, STM8S003F3P6 is in stock at major distributors like DigiKey and Mouser. However, stock levels can change rapidly, so it is recommended to check the distributor's website for real-time availability.

What is the best drop-in replacement for STM8S003F3P6?

The best drop-in replacement for STM8S003F3P6 is the STM8S003F3P6 itself, but if you need a variant with more memory, the STM8S103F3P6 is a drop-in replacement in the same TSSOP-20 package with 8 KB Flash and 1 KB RAM, offering identical pinout and peripherals.

Can STM8S003F3P6 be replaced by STM8S103F3P6?

Yes, the STM8S103F3P6 is a drop-in replacement for STM8S003F3P6. Both are in the TSSOP-20 package with the same pinout and peripheral set. The STM8S103F3P6 offers the same 8 KB Flash and 1 KB RAM, making it a direct replacement.

Where can I download the STM8S003F3P6 datasheet PDF?

The STM8S003F3P6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm8s003f3.pdf. It is also available on distributor websites like DigiKey and Mouser.

Where can I find the STM8S003F3P6 pinout?

The STM8S003F3P6 pinout is detailed in the datasheet on pages 1-5. The TSSOP-20 package has 20 pins, including power, ground, I/O, and programming pins. The pinout is also available on the ST website and distributor product pages.

What development tools are compatible with STM8S003F3P6?

The STM8S003F3P6 is supported by ST's ST Visual Develop (STVD) IDE and the Cosmic compiler. It can be programmed using the ST-Link debugger via the SWIM interface. Third-party tools like IAR Embedded Workbench also support the STM8 family.

Is STM8S003F3P6 RoHS compliant?

Yes, the STM8S003F3P6 is RoHS compliant. According to the ST datasheet, it is lead-free and halogen-free, meeting the requirements of the RoHS directive.

What is the power consumption of STM8S003F3P6 in Halt mode?

In Halt mode, the STM8S003F3P6 consumes approximately 1 µA at 3.3V. This low power consumption makes it suitable for battery-powered applications where long standby time is critical.

Does STM8S003F3P6 have an ADC?

Yes, the STM8S003F3P6 has a 10-bit ADC with up to 5 channels. This allows direct connection of analog sensors without an external ADC, simplifying the design.

What is the package type of STM8S003F3P6?

The STM8S003F3P6 is available in a TSSOP-20 package, which is a surface-mount package with 20 pins. The package dimensions are 6.5 mm x 4.4 mm with a 0.65 mm pitch.

Engineering reference data for STM8S003F3P6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM8S003F3P6 when you need a low-cost 8-bit MCU with 8 KB Flash, 1 KB RAM, and a rich set of peripherals in a compact TSSOP-20 package. It is ideal for high-volume consumer and industrial applications where cost is a primary concern. If you require the same functionality but need a DIP package for prototyping, consider the STM8S003F3P3. For applications that need additional features like a second UART or more timers, the STM8S103F3P6 is a drop-in upgrade with the same package and pinout. All three alternatives share the same TSSOP-20 footprint, ensuring PCB layout reuse. The STM8S003F3P6 is not recommended for applications requiring high computational performance or advanced connectivity; in such cases, consider the STM32 family.

Comparison with Alternatives

Parameter	This Product	STM8S003F3P3	STM8S103F3P6	STM8S103F3P3
Package	TSSOP-20	TSSOP-20 - same	TSSOP-20 - same	TSSOP-20 - same
Flash Memory	8 KB	8 KB	8 KB	8 KB
RAM	1 KB	1 KB	1 KB	1 KB
EEPROM	640 bytes	640 bytes	640 bytes	640 bytes
Max Clock Frequency	16 MHz	16 MHz	16 MHz	16 MHz
ADC Channels	5	5	5	5
Supply Voltage	2.95V to 5.5V	2.95V to 5.5V	2.95V to 5.5V	2.95V to 5.5V
Operating Temperature	-40C to +85C	-40C to +85C	-40C to +85C	-40C to +85C

Key Differentiators

Cost-effective 8-bit MCU with integrated EEPROM (vs STM8S103F3P6)
Wide operating voltage range (vs STM8S103F3P6)
Pin-to-pin compatible with STM8S103F3P6 (vs STM8S103F3P6)

Design Notes

Decouple the VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, a 1 µF capacitor is recommended for bulk decoupling. The supply voltage should be within 2.95V to 5.5V; exceeding this range can damage the device. For noisy environments, add a ferrite bead in series with VDD.

For the TSSOP-20 package, ensure proper land pattern design with a 0.65 mm pitch. Use a 4-layer PCB with a solid ground plane to minimize noise. Keep analog and digital grounds separate if using the ADC. Place the crystal (if used) close to the OSC pins and keep traces short to reduce parasitic capacitance.

Do not leave unused I/O pins floating; configure them as outputs or enable internal pull-ups to avoid excessive current consumption. When using the internal RC oscillator, note that it has ±2% accuracy, which may not be sufficient for time-critical applications like UART communication with strict baud rate tolerance. In such cases, use an external crystal.