My Inquiry
My Account
STMicroelectronics STM32F303K8T6
- Part No.:
- STM32F303K8T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32F303K8T6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:893
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32F303K8T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 72 MHz, featuring 64 KB Flash, 12 KB SRAM with hardware parity, and integrated analog peripherals including two 12-bit ADCs (21-channel, 0.20 µs conversion), three 12-bit DACs, three rail-to-rail comparators, and one programmable-gain operational amplifier. It targets motor control, digital power conversion, and sensor signal conditioning in industrial and consumer embedded systems.
For engineers reviewing the STM32F303K8T6 datasheet, STM32F303K8T6 pinout, STM32F303K8T6 application, or STM32F303K8T6 equivalent, key selection criteria include its dual ADC architecture with differential mode support, 5 V-tolerant GPIOs, CAN 2.0B interface, and dedicated timer resources for PWM generation with deadtime control - all in a compact LQFP32 package.
Technical Context
The STM32F303K8T6 implements an Arm Cortex-M4 core with single-cycle multiply and hardware divide, delivering 90 DMIPS at 72 MHz. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting real-time deterministic operation in closed-loop control.
Analog subsystem integration includes independent analog supplies (VDDA: 2.0–3.6 V; VREF+ for DAC/ADC: 2.4–3.6 V), configurable resolution ADCs (6/8/10/12-bit), and an op-amp usable as a programmable gain amplifier (PGA) with external feedback - enabling direct sensor front-end amplification without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time DSP operations (e.g., PID, FFT) in firmware without external co-processor |
| Flash / SRAM | 64 KB Flash, 12 KB SRAM with HW parity - sufficient for complex motor control algorithms with safety-critical data integrity |
| ADC | 2 × 12-bit ADCs, 21 channels total, 0.20 µs conversion - supports simultaneous sampling of current/voltage in 3-phase inverters |
| DAC | 3 × 12-bit DACs, 2.4–3.6 V analog supply - provides precise reference generation or analog waveform synthesis for calibration or actuator control |
| Timers | 1 × 32-bit + 6 × 16-bit timers, including advanced-control TIM1 with 6-channel PWM & deadtime - meets IEC 60730 Class B functional safety timing requirements |
| Communication | CAN 2.0B, 3 × USART (1 with ISO 7816), I²C, SPI - enables robust fieldbus connectivity and legacy protocol bridging in industrial nodes |
| Supply Range | VDD/VDDA: 2.0–3.6 V - compatible with single Li-ion or regulated 3.3 V rails; eliminates need for separate analog LDO |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch), ECOPACK®2-compliant, with 25 general-purpose I/O pins - optimized for space-constrained motor driver boards and smart sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Main and analog power supply | Separate domains allow clean analog reference; VDDA must be ≥ VDD for ADC/DAC accuracy |
| VSS, VSSA | Digital and analog ground | Independent grounding reduces noise coupling into sensitive analog measurements |
| PA0–PA15, PB0–PB15 | General-purpose I/O | Up to 25 pins available in LQFP32; all mappable to EXTI, many 5 V-tolerant for mixed-voltage interfacing |
| PA1, PA2, PA3 | ADC1_IN1, ADC1_IN2, ADC1_IN3 | Direct connection to internal ADC1; supports single-ended or differential input configurations |
| PA4, PA5 | DAC1_OUT, DAC2_OUT | Output pins for two independent 12-bit DAC channels; require external buffer for driving loads > 50 µA |
| PA8, PA9 | CAN_RX, CAN_TX | Dedicated CAN physical layer interface; requires external transceiver (e.g., TJA1050) for bus connection |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic levels for system-level reset coordination |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Op-Amp | Single rail-to-rail op-amp with PGA mode (gain = 1/2/4/8/16); enables direct sensor signal amplification before ADC digitization |
| Capacitive Sensing (TSC) | 18-channel touch sensing controller supporting touchkeys, sliders, and wheels - eliminates need for external touch IC in HMI applications |
| Advanced-Control Timer (TIM1) | 6-channel complementary PWM output with programmable deadtime and emergency stop - essential for 3-phase BLDC/PMSM gate driver timing |
| Temperature Sensor | Integrated calibrated sensor (±1.5°C accuracy) connected to ADC1_IN16 - enables on-chip thermal monitoring without external components |
| RTC with Calendar | Hardware calendar with alarm and periodic wakeup from Stop mode - supports low-power timekeeping in battery-backed applications |
Applications
| Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC motors in HVAC blowers or power tools. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, synchronized ADC sampling of phase currents, and generation of 6-channel PWM with deadtime for inverter gate drivers. Use Value: Integrated op-amp and comparators enable direct current-sense amplification and overcurrent protection, reducing BOM count by two external components. | Use Scenario: Digital control loop in isolated DC-DC converters (e.g., LLC resonant topologies). IC Role / Device Role / Timing Role: High-speed ADC sampling of primary-side voltage/current, real-time calculation of duty cycle and frequency, and precise PWM generation with sub-100 ns jitter. Use Value: Dual 12-bit ADCs with 0.20 µs conversion enable simultaneous voltage and current acquisition at 5 MSPS effective rate - critical for adaptive loop bandwidth tuning. |
| Sensor Signal Conditioning | Industrial HMI |
Use Scenario: Analog front-end for strain gauge or thermocouple-based process sensors in PLC I/O modules. IC Role / Device Role / Timing Role: PGA-mode op-amp amplifies low-level sensor signals; ADC digitizes conditioned output; DAC generates precision reference voltages. Use Value: On-die PGA eliminates external instrumentation amplifier, reducing layout sensitivity to noise and drift while maintaining ±0.1% gain accuracy. | Use Scenario: Touch-enabled user interface on industrial panel meters or building automation controllers. IC Role / Device Role / Timing Role: Capacitive sensing controller (TSC) scans up to 18 electrodes; MCU handles debouncing, gesture recognition, and display update via SPI. Use Value: Hardware-accelerated touch sensing consumes <100 µA in active scan mode - extends battery life in portable diagnostic tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303CBT6 | LQFP48 package, 32 KB Flash, 12 KB SRAM, identical peripheral set except 36 GPIOs vs. 25 | Higher I/O count and larger Flash support more complex HMI + communication stacks (e.g., Modbus + USB-CDC) | Select when board layout allows larger footprint and additional peripherals (e.g., second CAN, extra UART) are required |
| STM32G431KB6 | Cortex-M4F @ 170 MHz, 128 KB Flash, 32 KB SRAM, enhanced analog (2x faster ADC, 2x DACs), no CAN | Better computational throughput and analog performance for high-bandwidth control loops, but lacks CAN bus interface | Choose for next-gen digital power designs where CAN is not needed and higher ADC sampling rate (>5 MSPS) is critical |
Compared with STM32F303CBT6, the K8T6 offers identical analog capability in a smaller LQFP32 package but fewer GPIOs; versus STM32G431KB6, it trades higher clock speed and Flash for CAN 2.0B support and lower cost - making it optimal for CAN-based motor nodes where size and interface compatibility are prioritized over raw compute headroom.
Availability
STM32F303K8T6 is available at Aetrix Electronics and suitable for motor control, digital power conversion, sensor signal conditioning, and industrial HMI requiring stable component supply across long-lifecycle production programs.
Supply support for STM32F303K8T6 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, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STM32F3 series is designed specifically for cost-sensitive, analog-intensive embedded applications - emphasizing integrated op-amps, comparators, and high-resolution ADCs to reduce external component count in motor control and sensor processing systems.
FAQ
Does STM32F303K8T6 support hardware CRC calculation?
Yes. The device includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3, enabling fast, deterministic checksum generation for firmware updates, EEPROM data integrity verification, and communication frame validation without CPU overhead. It supports 32-bit polynomial configuration and processes data in 32-bit words.
What is the maximum operating temperature range for STM32F303K8T6?
The STM32F303K8T6 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 6.3.1 of DS9866 Rev 8, with thermal derating applied above 70 °C for sustained 72 MHz operation. Junction temperature must remain below 125 °C under all conditions.
Can the internal op-amp be used as a comparator?
No. The integrated op-amp is not designed for open-loop comparator operation. It lacks internal hysteresis and has limited slew rate (0.5 V/µs typical). For comparator functions, the device provides three dedicated ultra-fast rail-to-rail comparators (COMP1–COMP3) with propagation delay < 120 ns and built-in hysteresis control.
Is the STM32F303K8T6 pin-compatible with other STM32F303 variants?
No. While sharing the same core and peripheral architecture, the STM32F303K8T6 in LQFP32 is not pin-compatible with LQFP48 (e.g., STM32F303CBT6) or UFQFPN32 variants due to differing pin counts and signal mappings. Pin definitions are package-specific; migration requires PCB redesign and signal reassignment per Table 13 in DS9866.
STM32F303K8T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32F3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 9x12b; D/A 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F303K8T6 FAQ
1.How can I place an order for STM32F303K8T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F303K8T6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F303K8T6 reliable?
The price and inventory of STM32F303K8T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F303K8T6 is usually 5 days.
3.What payment methods are accepted for STM32F303K8T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F303K8T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F303K8T6?
STM32F303K8T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F303K8T6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F303K8T6?
For technical support, including STM32F303K8T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F303K8T6 requirements.
6.How does Aetrix verify that STM32F303K8T6 is sourced from the original manufacturer or authorized distributors?
All STM32F303K8T6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F303K8T6 meets industry standards.
7.What is the process for return or replacement of STM32F303K8T6?
All STM32F303K8T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F303K8T6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F303K8T6 part is unused and in its original packaging.
Return procedure for STM32F303K8T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F303K8T6 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
