My Inquiry
My Account
STMicroelectronics STM32C031K6T3
- Part No.:
- STM32C031K6T3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32C031K6T3.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,180
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32C031K6T3 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller with 32 KB flash, 12 KB SRAM, 48 MHz max CPU frequency, 2× USART, 12-bit ADC (0.4 µs conversion), and 45 5 V-tolerant I/Os. It operates from 2.0–3.6 V across –40°C to 125°C and targets cost-sensitive industrial control, smart sensors, and power management subsystems.
For engineers reviewing the STM32C031K6T3 datasheet, STM32C031K6T3 pinout, STM32C031K6T3 application, or STM32C031K6T3 equivalent, key selection criteria include its integrated CRC unit, hardware parity-checked SRAM, programmable brownout reset, 32 kHz crystal oscillator with calibration, and support for ISO7816/LIN/IrDA on USART1-critical for secure peripheral interfacing and robust low-power operation.
Technical Context
The STM32C031K6T3 implements an Arm Cortex-M0+ core with Memory Protection Unit (MPU) for task isolation in real-time firmware. Its clock system integrates four independent sources: 4–48 MHz HSE, 32 kHz LSE with calibration, 48 MHz HSI48 (±1%), and 32 kHz LSI (±5%), enabling precise timing control and fast wake-up from Stop/Standby modes.
Peripheral interconnect uses a dedicated AHB/APB matrix supporting concurrent DMA transfers across timers, ADC, and communication interfaces. The 3-channel DMA controller features flexible mapping to 39 request sources-including ADC, SPI, USART, and TIM-enabling zero-CPU-overhead data movement for sensor aggregation and motor control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 48 MHz max - enables deterministic real-time execution with <10 ns interrupt latency for time-critical control tasks. |
| Memory | 32 KB flash (with readout protection), 12 KB SRAM (hardware parity) - supports secure firmware storage and error-detecting RAM for safety-critical variables. |
| ADC | 12-bit, 0.4 µs conversion, up to 19 external channels - delivers high-resolution analog sensing at >2 MSPS effective throughput for multi-sensor systems. |
| Timers | 8 timers: 1x advanced-control (TIM1), 4x general-purpose (TIM3/14/16/17), 2x watchdogs, SysTick - provides PWM generation, input capture, and fail-safe timeout monitoring in one chip. |
| Communication | 2× USART (one with ISO7816/LIN/IrDA), 1× I²C (Fast-mode Plus, 1 Mbit/s), 1× SPI (24 Mbit/s) - enables interoperability with smart cards, automotive LIN networks, and high-speed sensors. |
| Power | Voltage range 2.0–3.6 V; low-power modes: Sleep, Stop, Standby, Shutdown - achieves sub-µA shutdown current for battery-powered edge nodes. |
| I/O | Up to 45 fast I/Os, all 5 V-tolerant and mappable to external interrupts - simplifies interface to legacy 5 V logic and enables flexible PCB routing without level shifters. |
Pinout & Package
LQFP32 (7 × 7 mm) package with 32 pins, ECOPACK2-compliant, rated for industrial temperature range (–40°C to 125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power/ground pairs ensure stable core and I/O rail decoupling; supports single-supply operation from 2.0–3.6 V. |
| PA0–PA15, PB0–PB15, PF0–PF1 | General-purpose I/O | All pins support alternate functions (USART, SPI, I²C, timers); 5 V-tolerance eliminates need for external clamping diodes when interfacing with 5 V peripherals. |
| NRST | Active-low reset input | Accepts standard push-pull or open-drain reset signals; internal pull-up ensures reliable startup without external resistor. |
| BOOT0 | Boot mode selection | High at power-on selects system memory bootloader; enables field firmware updates via USART without debugger. |
| OSC_IN / OSC_OUT | HSE crystal oscillator terminals | Supports 4–48 MHz quartz crystals; enables precise timing for USB-less communication and deterministic real-time scheduling. |
| RTC_IN / RTC_OUT | LSE oscillator terminals | Connects to 32.768 kHz crystal for calendar RTC with alarm; calibrated LSE ensures ±1 ppm accuracy over temperature for time-stamped logging. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC calculation unit | Accelerates firmware integrity checks and communication frame validation without CPU load-essential for OTA update security and CAN-like protocol stacks. |
| Programmable brownout reset (BOR) | Configurable trip points (2.0/2.2/2.4/2.7 V) prevent erratic operation during brownout events-critical for reliable startup in unstable power environments like solar-powered gateways. |
| Temperature sensor + VREFINT | On-chip sensor calibrated to ±1.5°C accuracy; internal voltage reference (1.21 V) enables self-calibrating ADC measurements-eliminates need for external references in thermal monitoring designs. |
| Serial wire debug (SWD) | 2-pin debug interface with full SW-DP support-enables non-intrusive real-time tracing, breakpoints, and memory inspection using standard ST-LINK tools. |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and REACH requirements-ensures regulatory readiness for global industrial and automotive supply chains. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Brushless DC motor commutation in HVAC blowers and pump drives using hall-effect or encoder feedback. IC Role / Device Role / Timing Role: MCU executes FOC algorithm, generates 3-phase PWM via TIM1, reads ADC current samples, and communicates status via USART to master controller. Use Value: Integrated advanced timer with dead-time insertion and fast ADC enable <5 µs current loop response-meeting IEC 61800-3 Class C EMI limits without external gate drivers. | Use Scenario: Real-time energy consumption monitoring in DIN-rail mounted meters with pulse output and RS-485 backhaul. IC Role / Device Role / Timing Role: Reads shunt-based current/voltage via 12-bit ADC, computes RMS/kWh using hardware CRC-accelerated math, logs data to flash with RTC timestamp. Use Value: Hardware parity on SRAM prevents corruption of accumulated kWh values during power glitches-ensuring billing-grade accuracy per IEC 62053-21. |
| Automotive Body Electronics | IoT Edge Sensor Node |
Use Scenario: LIN bus slave node for seat position memory, mirror adjustment, and ambient lighting control in entry-level vehicles. IC Role / Device Role / Timing Role: USART1 configured as LIN transceiver (ISO7816 physical layer), manages EEPROM-backed configuration, wakes on LIN header detection. Use Value: Built-in LIN physical layer support eliminates external transceiver IC-reducing BOM cost by $0.15 and PCB area by 12 mm². | Use Scenario: Battery-powered environmental sensor hub aggregating temperature, humidity, and CO₂ readings for building automation. IC Role / Device Role / Timing Role: Enters Stop mode between 10 s sampling intervals; wakes via RTC alarm, reads sensors via I²C, processes data, transmits via UART to LoRaWAN module. Use Value: Sub-1 µA Stop mode current extends CR2032 battery life to >2 years-meeting UL 2900-1 cybersecurity certification sleep-state requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G031F8P6 | Same Cortex-M0+, but 64 KB flash, no RTC calendar, no LSE calibration, 20-pin TSSOP | Lacks calendar RTC and calibrated LSE-unsuitable for time-stamped logging or precision wake-up scheduling | Select when higher flash density is needed and RTC functionality is not required; verify pin compatibility for TSSOP20 footprint. |
| RP2040 | Dual-core Arm Cortex-M0+, 2 MB flash, no hardware parity, no BOR, 1.1–1.3 V core voltage only | Requires external LDO and level shifters for 3.3 V systems; lacks industrial temp grade and safety features (CRC, parity) | Consider only for consumer-grade prototyping; not recommended for certified industrial or automotive deployments. |
Compared with STM32G031F8P6 and RP2040, the STM32C031K6T3 uniquely combines industrial temperature rating (–40°C to 125°C), hardware SRAM parity, programmable BOR, and calibrated RTC oscillator-making it the only option qualified for unattended operation in harsh environments like factory floor controllers and utility metering.
Availability
STM32C031K6T3 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, automotive body electronics, and IoT edge sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STM32C031K6T3 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, MEMS, and automotive semiconductors since 1987.
The STM32C0 series targets cost-optimized, high-reliability applications in industrial automation and appliance control-emphasizing robustness, low-power operation, and simplified qualification for IEC 61508 SIL-2 and IEC 60730 Class B functional safety standards.
FAQ
What is the maximum operating temperature specification for the STM32C031K6T3?
The STM32C031K6T3 is qualified for operation from –40°C to +125°C ambient temperature, verified per ST's industrial temperature grade testing protocol (JESD22-A108). This rating applies to the LQFP32 package variant and is documented in Section 5.3.1 of DS13867 Rev 4. No derating is required up to 125°C under specified VDD conditions.
Does the STM32C031K6T3 support USB connectivity?
No, the STM32C031K6T3 does not integrate a USB peripheral or PHY. It relies on external USB-to-UART bridges (e.g., CP2102N or CH340G) for host communication. Its two USARTs support full-duplex asynchronous operation, LIN, IrDA, and ISO7816-but lack native USB device or host capability per the device summary in Table 1 and Section 3.18 of DS13867 Rev 4.
How many USART interfaces does the STM32C031K6T3 have, and what advanced features do they support?
The STM32C031K6T3 has two USART interfaces. USART1 supports ISO7816 smart card mode, LIN physical layer (compliant with ISO 17987-4), IrDA encoding/decoding, auto baud rate detection, and wake-up from Stop mode. USART2 supports synchronous SPI mode and standard asynchronous operation. Both include hardware flow control and 8× oversampling for noise immunity-details confirmed in Tables 9 and 10 of DS13867 Rev 4.
Is the STM32C031K6T3 pin-compatible with other STM32C031 variants?
Yes, the STM32C031K6T3 in LQFP32 is pin-compatible with STM32C031K4T3 (32 KB flash) and STM32C031K6U3 (UFQFPN32), sharing identical pin assignments per Figure 5 and Table 12 of DS13867 Rev 4. However, it is not compatible with TSSOP20 or LQFP48 variants due to differing pin counts and signal mappings.
STM32C031K6T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32C0
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, SMBus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 18x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32C031K6T3 FAQ
1.How can I place an order for STM32C031K6T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32C031K6T3 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 STM32C031K6T3 reliable?
The price and inventory of STM32C031K6T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32C031K6T3 is usually 5 days.
3.What payment methods are accepted for STM32C031K6T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32C031K6T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32C031K6T3?
STM32C031K6T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32C031K6T3 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 STM32C031K6T3?
For technical support, including STM32C031K6T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32C031K6T3 requirements.
6.How does Aetrix verify that STM32C031K6T3 is sourced from the original manufacturer or authorized distributors?
All STM32C031K6T3 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 STM32C031K6T3 meets industry standards.
7.What is the process for return or replacement of STM32C031K6T3?
All STM32C031K6T3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32C031K6T3, 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 STM32C031K6T3 part is unused and in its original packaging.
Return procedure for STM32C031K6T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32C031K6T3 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…
