My Inquiry
My Account
STMicroelectronics STM32C031K4T6
- Part No.:
- STM32C031K4T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32C031K4T6.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32C031K4T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in LQFP32 package, operating up to 48 MHz with 32 KB flash and 12 KB SRAM, featuring two USARTs, 12-bit ADC (19 channels), eight timers including advanced motor control timer TIM1, and I²C/SPI interfaces - deployed in industrial sensor nodes and smart metering front-ends.
For engineers reviewing the STM32C031K4T6 datasheet, STM32C031K4T6 pinout, STM32C031K4T6 application, or STM32C031K4T6 equivalent, key selection considerations include its 5 V-tolerant GPIOs, ±1 % internal 48 MHz RC oscillator, hardware parity on SRAM, programmable brownout reset, and support for ISO7816/LIN/IrDA via USART1.
Technical Context
The device integrates an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection at boot. It implements dual clock domains: high-speed (HSE/HSI48) and low-speed (LSE/LSI), enabling precise RTC operation and fast wake-up from Stop mode (≤4 µs).
Peripheral interconnect uses AHB/APB buses with DMAMUX routing; ADC supports injected/conversion sequences with temperature sensor and VREFINT channels; all 45 GPIOs are 5 V-tolerant and mappable to external interrupt vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables deterministic real-time control with <10 ns interrupt latency. |
| Flash / RAM | 32 KB flash with readout protection; 12 KB SRAM with hardware parity - ensures code integrity and runtime data reliability. |
| ADC | 12-bit, 0.4 µs conversion time, up to 19 external channels - supports multi-sensor acquisition in compact industrial nodes. |
| Timers | Eight timers: one 16-bit advanced-control (TIM1), four general-purpose (TIM3/14/16/17), two watchdogs - meets motor FOC, PWM generation, and safety monitoring needs. |
| Communication | Two USARTs (one with ISO7816/LIN/IrDA), one I²C (Fast-mode Plus, 1 Mbit/s), one SPI (24 Mbit/s) - enables mixed-protocol connectivity in utility metering. |
| Power Range | 2.0–3.6 V supply with BOR, POR/PDR, Sleep/Stop/Standby/Shutdown modes - supports battery-backed and wide-input industrial power rails. |
| GPIO | Up to 45 pins, all 5 V-tolerant and interrupt-capable - simplifies level-shifting and direct interfacing with legacy 5 V peripherals. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual power domain: VDD powers digital/analog circuits; VSS provides reference return path for noise-sensitive analog blocks. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | All 5 V-tolerant; PA0–PA3 support ADC1_IN0–IN3; PC14/PC15 host 32 kHz crystal for RTC calibration. |
| NRST | Active-low reset input | Accepts 1.65–5.5 V logic; internal pull-up; supports external reset button or supervisor IC assertion. |
| BOOT0 | Boot mode selection | High at power-on forces system memory boot (for DFU); tied low for normal flash execution. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full SWD programming and real-time trace without JTAG overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | Accelerates firmware signature verification and data packet integrity checks in communication stacks. |
| Programmable BOR | Four threshold levels (2.0/2.2/2.4/2.7 V) allow precise brownout detection aligned with system power rail tolerances. |
| Temperature sensor | Integrated sensor with factory-calibrated slope (1.43 mV/°C) and offset - enables ambient monitoring without external components. |
| Internal voltage reference (VREFINT) | 1.22 V ±10 mV reference used for ADC self-calibration and supply-independent measurements. |
| Low-power Stop mode | Consumes ≤1.3 µA with RTC running and 8 KB SRAM retained - extends battery life in always-on sensing applications. |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Electricity/water/gas meter with pulse counting, tamper detection, and wireless backhaul. IC Role / Device Role / Timing Role: Main controller managing metrology ADC sampling, secure firmware updates, and ISO7816-based secure element interface. Use Value: Hardware parity on SRAM and readout protection prevent corruption of billing data; LIN support enables local HAN communication. | Use Scenario: DIN-rail mounted environmental monitor collecting temperature, humidity, and vibration data. IC Role / Device Role / Timing Role: Edge processing node executing sensor fusion, local alarm logic, and UART-to-LoRaWAN bridging. Use Value: 5 V-tolerant GPIOs interface directly with legacy 5 V sensors; 32 kHz RTC with calibration maintains accurate timestamping over temperature range. |
| Motor Control Module | IoT Gateway Subsystem |
Use Scenario: Brushless DC motor driver for HVAC blowers or small pumps. IC Role / Device Role / Timing Role: Real-time PWM generator using TIM1 advanced timer with dead-time insertion and fault protection inputs. Use Value: 48 MHz CPU delivers >100 kHz PWM carrier frequency; hardware CRC validates motor profile updates over CAN or UART. | Use Scenario: Secure boot loader and peripheral manager in a multi-protocol gateway (BLE + Zigbee + Ethernet). IC Role / Device Role / Timing Role: Trusted execution environment for secure firmware authentication prior to loading main application. Use Value: Memory Protection Unit (MPU) isolates bootloader from application space; 32 KB flash accommodates dual-bank OTA update images. |
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 VREFINT, lacks ISO7816 support in USART | Better for larger firmware footprints; unsuitable where secure card interface is required | Select when extended flash and USB support outweigh need for ISO7816 or calibrated VREFINT |
| RP2040 | Dual-core Arm Cortex-M0+, 2 MB flash, no hardware parity, no BOR, 1.8–3.3 V only | Requires external voltage translation for 5 V peripherals; lacks industrial-grade power supervision | Prefer for cost-sensitive consumer IoT with USB-CDC; avoid in safety-critical or wide-voltage industrial designs |
Compared with STM32G031F8P6 and RP2040, the STM32C031K4T6 uniquely combines 5 V-tolerant I/O, hardware SRAM parity, ISO7816 capability, and programmable BOR - making it optimal for certified utility metering and robust industrial edge nodes where reliability and mixed-voltage interoperability are mandatory.
Availability
STM32C031K4T6 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, motor control modules, and IoT gateway subsystems requiring stable component supply across long product lifecycles.
Supply support for STM32C031K4T6 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM32C0 series targets cost-sensitive, high-volume industrial and appliance applications - delivering Cortex-M0+ performance with enhanced analog integration, robust power management, and qualification for extended temperature ranges (−40°C to 125°C).
FAQ
What is the maximum operating temperature rating for STM32C031K4T6?
The STM32C031K4T6 is qualified for operation from −40°C to 125°C ambient temperature, meeting industrial-grade thermal requirements. This rating is validated per ST's production test flow and documented in Section 5.3.1 of DS13867 Rev 4, with derating applied above 85°C for certain peripherals like ADC accuracy and flash endurance.
Does STM32C031K4T6 support USB connectivity?
No, the STM32C031K4T6 does not integrate a USB peripheral. It provides USART, I²C, and SPI interfaces only. For USB-enabled variants in the same family, consider the STM32G0 series (e.g., STM32G071KB) which includes USB 2.0 FS device support and dedicated USB PHY.
Can the internal 48 MHz RC oscillator be used for USB or audio timing?
No - the internal 48 MHz RC oscillator has ±1 % accuracy at 25°C and drifts with temperature/voltage, making it unsuitable for USB or audio clocking that requires <±0.25 % tolerance. For such applications, use the 4–48 MHz external crystal oscillator or a precision external clock source.
How many GPIO pins support analog input on STM32C031K4T6?
The device supports up to 19 external analog input channels mapped to GPIOs PA0–PA7, PB0–PB1, PC0–PC5, and PF0–PF1. These pins are shared with ADC1_IN0 through ADC1_IN18 per Table 12 in DS13867 Rev 4, and require proper configuration of analog mode and sampling time in firmware.
STM32C031K4T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32C0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 16KB (16K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32C031K4T6 FAQ
1.How can I place an order for STM32C031K4T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32C031K4T6 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 STM32C031K4T6 reliable?
The price and inventory of STM32C031K4T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32C031K4T6 is usually 5 days.
3.What payment methods are accepted for STM32C031K4T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32C031K4T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32C031K4T6?
STM32C031K4T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32C031K4T6 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 STM32C031K4T6?
For technical support, including STM32C031K4T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32C031K4T6 requirements.
6.How does Aetrix verify that STM32C031K4T6 is sourced from the original manufacturer or authorized distributors?
All STM32C031K4T6 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 STM32C031K4T6 meets industry standards.
7.What is the process for return or replacement of STM32C031K4T6?
All STM32C031K4T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32C031K4T6, 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 STM32C031K4T6 part is unused and in its original packaging.
Return procedure for STM32C031K4T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32C031K4T6 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…
