My Inquiry
My Account
STMicroelectronics STM32F051C4T6
- Part No.:
- STM32F051C4T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F051C4T6.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,876
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32F051C4T6 from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 16 KB Flash, 8 KB SRAM, and integrated peripherals including a 12-bit ADC, 12-bit DAC, two USARTs (one with LIN/IrDA), two I²C interfaces (one Fast Mode Plus), and up to 39 GPIOs - 36 of which are 5 V tolerant. It operates from 2.0–3.6 V and supports low-power Stop/Standby modes with RTC wakeup, targeting cost-sensitive industrial control and sensor interface applications.
For engineers reviewing the STM32F051C4T6 datasheet, STM32F051C4T6 pinout, STM32F051C4T6 application, or STM32F051C4T6 equivalent, key selection criteria include its 48 MHz max CPU frequency, 5 V-tolerant I/O capability, integrated capacitive touch sensing (up to 18 channels), hardware CRC unit, and SWD debug interface - all in a compact LQFP48 package.
Technical Context
The STM32F051C4T6 implements a single-cycle ARM Cortex-M0 core with Thumb-2 instruction set, supporting deterministic real-time execution and NVIC-based interrupt handling. Its clock system integrates multiple oscillators: 4–32 MHz HSE, 32 kHz LSE for RTC, 8 MHz HSI with PLL (×6), and 40 kHz LSI for watchdogs.
Peripheral integration includes a 7-channel advanced-control timer (TIM1) with deadtime generation and emergency stop for motor control, plus six general-purpose timers (TIM2/3/14/15/16/17) supporting IR decoding, PWM, input capture, and DAC triggering. The analog subsystem combines one 12-bit ADC (1 µs conversion, 16-channel multiplexing), one 12-bit DAC, two programmable comparators, and a dedicated touch-sensing controller (TSC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time control with low-latency interrupt response (≤12 cycles) |
| Flash Memory | 16 KB - sufficient for firmware with bootloader, communication stacks (LIN/USART), and sensor processing logic |
| SRAM | 8 KB with hardware parity - supports reliable data buffering and stack operations in safety-critical routines |
| ADC | 12-bit, 1.0 µs conversion time, 16-channel mux - suitable for simultaneous sampling of temperature, voltage, and current sensors |
| DAC | 12-bit, single channel - provides precise analog output for calibration signals or actuator biasing |
| I/O Voltage Tolerance | 36 pins rated 5 V tolerant - simplifies interfacing with legacy 5 V peripherals without level shifters |
| Low-Power Modes | Sleep, Stop, Standby with RTC wakeup - achieves ≤1.2 µA Standby current (VBAT mode) for battery-backed applications |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2 package with exposed thermal pad (not electrically connected). Pin count and layout optimized for compact industrial PCBs requiring mixed-signal I/O and debug access.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Decoupling required per datasheet (100 nF + 1 µF near each VDD pin) to stabilize 2.0–3.6 V core operation |
| VDDA, VSSA | Analog power and ground | Must be filtered separately from digital rails; supports ADC/DAC reference stability across 2.4–3.6 V range |
| PA0–PA15, PB0–PB11 | General-purpose I/O | 39 total GPIOs; PA0–PA15 and PB0–PB11 mapped to specific alternate functions (e.g., USART1_TX on PA9, I²C1_SCL on PB6) |
| NRST | Active-low reset input | Internal pull-up; accepts external push-button or supervisor IC assertion; minimum pulse width 20 ns |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full flash programming, breakpoint debugging, and real-time register inspection |
| BOOT0 | Boot mode selection | Pulled low by default; high at reset forces boot from system memory (for DFU or factory loader) |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Touch Sensing (TSC) | Supports up to 18 channels for touchkey, linear, or rotary sensors - eliminates external touch controller ICs in HMI designs |
| Programmable Voltage Detector (PVD) | Configurable threshold (2.2–2.9 V) with interrupt generation - enables early brown-out detection before system reset |
| Hardware CRC Unit | 32-bit polynomial engine (CRC-32, CRC-16) - accelerates firmware integrity checks and communication frame validation |
| Advanced-Control Timer (TIM1) | 7-channel PWM with complementary outputs, deadtime insertion, and emergency stop - directly drives 3-phase motor gate drivers |
| Fast Mode Plus I²C | 1 Mbit/s with 20 mA sink capability - interoperates with standard I²C devices while driving heavier bus loads |
Applications
| Industrial Sensor Node | Smart HVAC Controller |
|---|---|
Use Scenario: Compact environmental monitoring node measuring temperature, humidity, and CO₂ using analog and digital sensors. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion, local decision logic, and UART-based Modbus RTU communication. Use Value: Integrated 12-bit ADC and 5 V-tolerant GPIOs reduce BOM count; low-power Stop mode extends battery life to >2 years on coin cell. | Use Scenario: Wall-mounted thermostat with capacitive touch buttons, fan speed control, and wireless gateway interface. IC Role / Device Role / Timing Role: Real-time HVAC actuator manager with LIN bus communication to compressor module and TSC-driven UI. Use Value: TIM1's deadtime-controlled PWM drives BLDC fan; TSC replaces mechanical buttons; LIN-capable USART ensures automotive-grade interoperability. |
| Programmable Logic Relay | USB-to-Serial Bridge Adapter |
Use Scenario: DIN-rail mounted relay module accepting digital inputs, executing ladder logic, and switching 24 V DC loads. IC Role / Device Role / Timing Role: Deterministic state machine executor with GPIO input sampling, timer-based debounce, and output PWM timing. Use Value: Cortex-M0 core delivers sub-millisecond I/O response; hardware CRC validates configuration updates over RS-485. | Use Scenario: Field-deployable adapter converting USB commands to RS-232/RS-485 signals for legacy industrial equipment. IC Role / Device Role / Timing Role: Protocol translator managing USB CDC ACM class, UART framing, and level-shifting control via GPIOs. Use Value: Dual USARTs support simultaneous host interface and device-side serial; 48 MHz clock ensures error-free 921.6 kbps UART operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | 16 KB Flash, 4 KB SRAM, no DAC, no TSC, fewer timers (no TIM1), LQFP48 | Lacks analog output and touch capability; limited motor control features | Select when DAC, TSC, or advanced PWM are unnecessary and cost is primary constraint |
| STM32F070F6P6 | 32 KB Flash, 6 KB SRAM, no DAC, no TSC, includes USB 2.0 FS device, LQFP48 | Adds USB connectivity but omits DAC and touch sensing; same I/O count and voltage tolerance | Choose for USB-enabled field programmers or HID devices where analog generation is not required |
Compared with STM32F030F4P6 and STM32F070F6P6, the STM32F051C4T6 uniquely balances analog integration (DAC + ADC), capacitive touch, and motor-control timers in a cost-optimized LQFP48 footprint - making it optimal for sensor-actuator edge nodes requiring both precision analog and robust real-time I/O.
Availability
STM32F051C4T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, programmable logic relays, and USB-to-serial bridge adapters requiring stable component supply and long-term manufacturability.
Supply support for STM32F051C4T6 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 sensors, and automotive semiconductors.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring ARM Cortex-M0 performance, rich analog integration, and industrial-grade reliability - with emphasis on motor control, human-machine interface, and sensor processing.
FAQ
What is the maximum operating frequency and supported voltage range?
The STM32F051C4T6 operates at up to 48 MHz using its internal 8 MHz HSI oscillator with PLL multiplication or an external crystal. Its digital supply (VDD) ranges from 2.0 V to 3.6 V, while the analog supply (VDDA) must be between 2.4 V and 3.6 V and tied to VDD unless isolated for noise-sensitive ADC use. Absolute maximum ratings prohibit exceeding 4.0 V on any pin.
Does this MCU support in-circuit debugging and programming?
Yes - the STM32F051C4T6 includes a Serial Wire Debug (SWD) interface using SWDIO and SWCLK pins, enabling full JTAG-equivalent functionality: flash programming, real-time variable inspection, hardware breakpoints, and step-through debugging via standard tools like ST-LINK/V2 or CMSIS-DAP compliant debuggers.
How many I/O pins are 5 V tolerant, and what peripherals are available on them?
Up to 36 GPIOs (PA0–PA15, PB0–PB11, and selected PC pins depending on package) are 5 V tolerant. These support all major alternate functions: USART TX/RX, I²C SCL/SDA, SPI MOSI/MISO/SCK, TIMx CH1–CH4, and ADC IN0–IN15. Non-tolerant pins (e.g., VDDA-related analog inputs) must remain within VDDA limits.
What are the low-power capabilities and typical current consumption in Stop mode?
In Stop mode with RTC and SRAM retention enabled, the STM32F051C4T6 draws 1.2 µA typical (max 4.5 µA) from VDD and 0.8 µA from VBAT. Wakeup occurs in ≤5 µs via EXTI line, RTC alarm, or USART start bit. This enables multi-year operation on CR2032 batteries in metering or sensor logging applications.
STM32F051C4T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 13x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F051C4T6 FAQ
1.How can I place an order for STM32F051C4T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051C4T6 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 STM32F051C4T6 reliable?
The price and inventory of STM32F051C4T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051C4T6 is usually 5 days.
3.What payment methods are accepted for STM32F051C4T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051C4T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051C4T6?
STM32F051C4T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051C4T6 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 STM32F051C4T6?
For technical support, including STM32F051C4T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051C4T6 requirements.
6.How does Aetrix verify that STM32F051C4T6 is sourced from the original manufacturer or authorized distributors?
All STM32F051C4T6 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 STM32F051C4T6 meets industry standards.
7.What is the process for return or replacement of STM32F051C4T6?
All STM32F051C4T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051C4T6, 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 STM32F051C4T6 part is unused and in its original packaging.
Return procedure for STM32F051C4T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F051C4T6 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…
