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STMicroelectronics STM32F101C4T6A
- Part No.:
- STM32F101C4T6A
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F101C4T6A.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,591
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Product details
Overview
STM32F101C4T6A from STMicroelectronics is a low-density ARM® Cortex®-M3 microcontroller in LQFP48 package, featuring 16 KB Flash, 4 KB SRAM, 36 MHz max CPU frequency, 12-bit ADC with 16 channels, and integrated peripherals including 2×USART, 1×I²C, 1×SPI, 5 timers (including watchdogs), and SWD/JTAG debug. It serves as a main system controller in compact industrial sensors and battery-powered telemetry nodes.
For engineers reviewing the STM32F101C4T6A datasheet, STM32F101C4T6A pinout, STM32F101C4T6A application, or STM32F101C4T6A equivalent, key selection criteria include Flash/SRAM size trade-offs, LQFP48 footprint compatibility, 36 MHz real-time control timing margin, and support for UART-based firmware updates and I²C sensor interfacing.
Technical Context
The STM32F101C4T6A implements a single-core ARM Cortex-M3 with Harvard bus architecture, supporting Thumb-2 instruction set and nested vectored interrupt controller (NVIC) for deterministic <12-cycle interrupt latency. Its clock tree integrates HSE (4–16 MHz), HSI (8 MHz factory-trimmed), LSE (32.768 kHz), and PLL for flexible system timing.
Peripheral interconnect uses AHB/APB buses with DMA-driven data movement across USART, SPI, I²C, and ADC - enabling zero-CPU-overhead sensor acquisition and serial communication. Power management includes Sleep, Stop, and Standby modes with VBAT-backed RTC and backup registers for timekeeping during main supply removal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 36 MHz max - enables real-time deterministic control loops at ≤27.8 ns instruction cycle time. |
| Flash Memory | 16 KB - sufficient for bootloader + basic RTOS + sensor fusion firmware in space-constrained designs. |
| SRAM | 4 KB - supports stack/heap for FreeRTOS tasks and small buffers for UART/I²C packet handling. |
| ADC | 12-bit, 1 µs conversion, up to 16 channels - delivers ±1 LSB INL for precision analog monitoring of voltage, temperature, and resistive sensors. |
| Timers | 5 total: 2×16-bit general-purpose, 2×watchdog (independent + window), 1×SysTick - provides PWM generation, safety timeout enforcement, and OS tick timing. |
| Communication Interfaces | 2×USART (LIN/IrDA/modem control), 1×I²C (SMBus/PMBus), 1×SPI (18 Mbit/s) - supports multi-protocol sensor hub and host interface without external transceivers. |
| Supply Voltage | 2.0–3.6 V - compatible with single-cell Li-ion (3.0–3.6 V) and regulated 3.3 V rails; no level-shifting needed for 3.3 V peripherals. |
| I/O Count | 37 GPIOs (51-pin variant mapped to 37 usable pins in LQFP48) - all 5 V-tolerant except analog inputs, simplifying mixed-voltage board design. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Thermal resistance θJA = 46 °C/W (JEDEC standard PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power pins with separate decoupling requirements; VDDA must be ≥ VDD for ADC accuracy. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 37 total GPIOs; all support external interrupts, most are 5 V-tolerant - enables direct connection to legacy 5 V logic or sensors. |
| PA9/PA10 | USART1 TX/RX | Hardware UART pair with full modem control (CTS/RTS available on alternate pins) - supports bootloader over RS-232 via level shifter. |
| PA11/PA12 | USB Device (not applicable) | Not connected in STM32F101x4/x6 series - these pins are reserved but unused; avoid routing USB traces. |
| PC13–PC15 | RTC oscillator & tamper | Supports 32.768 kHz crystal for calendar timekeeping and backup register retention during VDD loss using VBAT. |
| NRST | Active-low reset | Externally driven reset with internal pull-up; requires RC filter per datasheet Figure 27 for ESD robustness in industrial environments. |
| BOOT0 | Boot mode select | High at power-on forces system memory boot (for ISP); tied low via 10 kΩ resistor for normal Flash execution. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle multiplication & hardware division | Enables efficient fixed-point math for motor control or PID without software library overhead. |
| Programmable voltage detector (PVD) | Configurable trip point (2.2–2.9 V) triggers interrupt before brown-out - allows graceful shutdown or data save to backup registers. |
| Temperature sensor with calibration | Factory-calibrated slope (1.41 mV/°C) and offset enable ±2°C ambient temperature measurement without external components. |
| CRC calculation unit | Hardware-accelerated CRC-32 over memory blocks - verifies firmware integrity or sensor data packets in <1 µs per 32-bit word. |
| 96-bit unique ID | Read-only silicon serial number used for device authentication, license binding, or secure boot key derivation. |
| SWD debug interface | 2-pin (SWCLK/SWDIO) serial wire debug replaces JTAG pins - saves PCB space and simplifies production programming fixtures. |
Applications
| Industrial Sensor Node | Smart Meter Interface Module |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature, humidity, and CO₂ via I²C sensors, logging data to EEPROM, and transmitting via UART to gateway. IC Role / Device Role / Timing Role: Primary MCU executing sensor polling, ADC sampling, CRC-verified data storage, and asynchronous UART transmission at 115.2 kbps. Use Value: 16 KB Flash accommodates sensor drivers + lightweight protocol stack; 37 GPIOs route all required interfaces without multiplexing conflicts. |
Use Scenario: DIN-rail mounted module translating pulse outputs from mechanical utility meters into Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol converter with precise 1 ms timer-based pulse counting, UART-to-Modbus framing, and watchdog-enforced fault recovery. Use Value: Independent watchdog ensures automatic reset on firmware hang; 2.0–3.6 V operation matches wide-input isolated DC-DC supplies common in metering. |
| Portable Medical Diagnostic Tool | Home Automation Controller |
Use Scenario: Battery-powered handheld device acquiring ECG signals via analog front-end, performing baseline filtering, and displaying results on OLED via SPI. IC Role / Device Role / Timing Role: Real-time signal processor running FIR filter on ADC samples, managing OLED refresh, and entering Stop mode between measurements. Use Value: 4 KB SRAM holds dual ping-pong ADC buffers; Stop mode current <3.5 µA extends coin-cell life beyond 1 year with periodic wakeups. |
Use Scenario: Wall-mounted hub aggregating Z-Wave and 433 MHz wireless sensor data, exposing REST API via Ethernet-connected bridge. IC Role / Device Role / Timing Role: Peripheral coordinator handling UART-based Z-Wave module command/response, managing LED indicators, and supervising power sequencing. Use Value: 5 V-tolerant GPIOs interface directly with discrete LED drivers and optocoupled reset lines; 12-bit ADC monitors supply rail health. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | ARM Cortex-M0, 48 MHz, 16 KB Flash, 4 KB SRAM, no RTC or temperature sensor | Lacks VBAT-backed RTC and calibrated temp sensor; lower interrupt latency but no hardware DIV instruction | Select when cost sensitivity outweighs need for calendar timekeeping or on-chip temperature reference. |
| EFM32HG309F64 | Silicon Labs Gecko, Cortex-M0+, 25 MHz, 64 KB Flash, 8 KB RAM, ultra-low-power sleep modes | Superior active/sleep current (110 µA/MHz vs 190 µA/MHz), but no SWD debug; requires proprietary toolchain | Prefer for battery life-critical applications where development ecosystem flexibility is secondary to energy efficiency. |
Compared with STM32F101C4T6A, the STM32F030F4P6 reduces BOM cost but sacrifices RTC functionality and thermal sensing, while the EFM32HG309F64 improves power efficiency by 42% in active mode yet introduces toolchain lock-in and debug interface limitations.
Availability
STM32F101C4T6A is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interface modules, portable medical diagnostic tools, and home automation controllers requiring stable component supply and long-term manufacturability.
Supply support for STM32F101C4T6A 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 ICs, MEMS, and automotive semiconductors since 1987.
The STM32F101x4/x6 series targets cost-sensitive, space-constrained embedded applications requiring ARM Cortex-M3 performance with minimal peripheral count - optimized for industrial control, consumer IoT, and metering where Flash density and package size are critical constraints.
FAQ
What is the maximum operating frequency and corresponding power consumption of the STM32F101C4T6A?
Maximum CPU frequency is 36 MHz. At 36 MHz, 3.3 V, and 25 °C with all peripherals enabled, typical active-mode current is 24 mA (7.2 mA/MHz). This value scales linearly with voltage and temperature; actual consumption depends on peripheral enable state and flash wait states - zero-wait-state operation is guaranteed up to 24 MHz at 3.3 V.
Does the STM32F101C4T6A support USB connectivity?
No. The STM32F101C4T6A does not include a USB peripheral. Pins PA11 and PA12 are physically present in the LQFP48 package but are unconnected internally - they serve only as general-purpose I/O and cannot be used for USB signaling. For USB-capable variants, consider the STM32F102 or STM32F103 series.
How many I/O pins are 5 V-tolerant, and which ones are exceptions?
37 GPIOs are 5 V-tolerant, including all pins in ports A, B, and C except PC13–PC15 (RTC oscillator pins) and analog input channels (PA0–PA7 when configured as ADC inputs). Tolerance applies only when the pin is configured as digital input or output; analog inputs must remain within VDDA (≤3.6 V) to prevent damage or measurement error.
What debug interfaces are supported, and what hardware is required for programming?
The STM32F101C4T6A supports Serial Wire Debug (SWD) and JTAG. SWD is recommended: it requires only two signals (SWCLK and SWDIO) plus GND, and works with ST-LINK/V2, J-Link, or CMSIS-DAP debug probes. Programming is performed via the SWD interface or system memory bootloader accessed through USART1 using the ST Microelectronics Flash Loader Demonstrator tool.
STM32F101C4T6A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 36MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F101C4T6A FAQ
1.How can I place an order for STM32F101C4T6A through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101C4T6A 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 STM32F101C4T6A reliable?
The price and inventory of STM32F101C4T6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101C4T6A is usually 5 days.
3.What payment methods are accepted for STM32F101C4T6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101C4T6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101C4T6A?
STM32F101C4T6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101C4T6A 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 STM32F101C4T6A?
For technical support, including STM32F101C4T6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101C4T6A requirements.
6.How does Aetrix verify that STM32F101C4T6A is sourced from the original manufacturer or authorized distributors?
All STM32F101C4T6A 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 STM32F101C4T6A meets industry standards.
7.What is the process for return or replacement of STM32F101C4T6A?
All STM32F101C4T6A units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101C4T6A, 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 STM32F101C4T6A part is unused and in its original packaging.
Return procedure for STM32F101C4T6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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