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STMicroelectronics STM32F100CBT6BTR
- Part No.:
- STM32F100CBT6BTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F100CBT6BTR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:7,453
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Product details
Overview
STM32F100CBT6BTR from STMicroelectronics is a 32-bit ARM Cortex-M3 microcontroller with 128 KB Flash, 8 KB SRAM, 24 MHz max CPU frequency, 12-bit ADC (16-channel), dual 12-bit DACs, and up to 8 communication interfaces (3×USART, 2×SPI, 2×I²C, CEC). It operates from 2.0–3.6 V and supports Sleep/Stop/Standby low-power modes for battery-powered industrial sensors and motor control edge nodes.
For engineers reviewing the STM32F100CBT6BTR datasheet, STM32F100CBT6BTR pinout, STM32F100CBT6BTR application, or STM32F100CBT6BTR equivalent, key selection criteria include Flash/SRAM size, integrated DAC count, 5 V-tolerant I/O count (up to 80), RTC with VBAT backup, and SWD/JTAG debug support in LQFP48 package.
Technical Context
The device implements an ARM Cortex-M3 core with single-cycle multiply and hardware divide, delivering 1.25 DMIPS/MHz performance. Its clock system integrates a 4–24 MHz external crystal oscillator, 8 MHz factory-trimmed RC, 40 kHz RC, PLL for CPU clock generation, and dedicated 32 kHz oscillator for RTC with calibration.
Peripheral architecture includes a 7-channel DMA controller servicing timers, ADC, SPI, I²C, USART, and DAC; nested vectored interrupt controller (NVIC); external interrupt/event controller (EXTI); and remappable GPIOs supporting up to 16 external interrupt vectors. All I/Os are 5 V-tolerant except analog inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 24 MHz max frequency - enables deterministic real-time control at ≤41.7 ns instruction cycle time |
| Flash Memory | 128 KB - sufficient for complex firmware with bootloader, OTA update partition, and safety-critical code separation |
| SRAM | 8 KB - supports multiple RTOS task stacks, sensor data buffering, and communication protocol buffers |
| ADC | 1 × 12-bit, 1.2 µs conversion, 16 channels - meets sub-1 µs sampling requirements for motor current sensing |
| DAC | 2 × 12-bit - enables simultaneous analog waveform generation (e.g., PWM reference + bias voltage) |
| I/O Count | 37 pins in LQFP48 package, all 5 V-tolerant - simplifies interface to legacy 5 V logic and industrial sensors |
| Timers | 12 timers including advanced-control timer with dead-time generation - supports 3-phase motor gate drive without external IC |
| Debug Interface | SWD and JTAG - enables full-speed debugging, flash programming, and real-time trace via standard ST-LINK tools |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core and I/O domain supply pins; decoupling required per STM32 layout guidelines |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 37 total GPIOs; all 5 V-tolerant except PC13–PC15 (RTC-related, not 5 V-tolerant) |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic levels |
| BOOT0 | Boot mode selection | High at power-up selects system memory boot (for DFU); tied low for main Flash execution |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full programming, breakpoint, and memory inspection without JTAG pins |
| VREF+ | Analog reference voltage input | Optional external 3.3 V reference for ADC/DAC precision; bypassed to VSS with 100 nF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Calibrated ±1.5 °C accuracy over –40 to +85 °C - enables on-chip thermal monitoring without external sensor |
| CRC calculation unit | Hardware-accelerated CRC-32 - reduces firmware overhead for data integrity checks in communication stacks |
| Programmable voltage detector (PVD) | Configurable trip points (2.2–2.9 V in steps) - triggers interrupt before brown-out, enabling graceful shutdown |
| Consumer Electronics Control (CEC) | HDMI-CEC v1.4 compliant interface - supports remote control interoperability in smart home appliances |
| 96-bit unique ID | Factory-programmed serial number - enables secure device authentication and license binding in production |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Compact, battery-operated environmental monitor measuring temperature, humidity, and CO₂ using analog and digital sensors. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, wireless transmission (via UART-to-LoRa bridge), and RTC-based wake-up scheduling. Use Value: Integrated 12-bit ADC and dual DAC enable direct analog sensor interfacing and calibration signal generation; Stop mode current < 3.5 µA extends 10-year battery life. | Use Scenario: Residential HVAC controller with LCD display, touch buttons, and relay outputs managing heating/cooling cycles. IC Role / Device Role / Timing Role: Real-time system manager handling UI responsiveness, PID loop execution at 100 ms intervals, and precise 1-second RTC timing for scheduling. Use Value: 24 MHz Cortex-M3 delivers >2000 DMIPS for smooth UI rendering and concurrent communication; 37 GPIOs support direct button matrix and relay driver interface. |
| Brushless DC Motor Starter | USB-C Power Delivery Monitor |
Use Scenario: Low-cost BLDC starter board for fans and pumps, implementing six-step commutation with hall-effect feedback. IC Role / Device Role / Timing Role: Timing-critical motor controller generating complementary PWM with programmable dead time on advanced timer channels. Use Value: Advanced-control timer provides hardware dead-time insertion and emergency stop - eliminates risk of shoot-through in half-bridge drivers. | Use Scenario: USB-C PD sink monitor in portable chargers, verifying VBUS voltage/current and negotiating power contracts via CC line. IC Role / Device Role / Timing Role: Protocol-aware monitor interfacing with USB-C PHY via USART (for BMC decoding) and ADC (for VBUS sensing). Use Value: 12-bit ADC with internal reference achieves ±1% VBUS measurement accuracy; CEC interface repurposed for CC line signaling per USB PD spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F070F6P6 | ARM Cortex-M0, 48 MHz, 32 KB Flash, no DAC, 1×12-bit ADC (10 ch) | Lacks dual DAC and RTC calibration; lower interrupt latency but no hardware division | Select when cost sensitivity outweighs analog feature needs and higher CPU throughput is acceptable |
| STM32G031F8P6 | ARM Cortex-M0+, 64 MHz, 64 KB Flash, 1×12-bit DAC, 1×12-bit ADC (19 ch) | Higher clock speed and Flash, but only one DAC; no CEC or temperature sensor | Prefer for new designs needing USB 2.0 FS support and enhanced security features (RNG, AES) |
Compared with STM32F100CBT6BTR, STM32F070F6P6 trades analog integration for lower BOM cost, while STM32G031F8P6 offers modern peripherals and security at the expense of RTC precision and dual-DAC waveform synthesis capability.
Availability
STM32F100CBT6BTR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, brushless DC motor starters, and USB-C power delivery monitors requiring stable component supply across multi-year production cycles.
Supply support for STM32F100CBT6BTR 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 STM32F100 value line targets cost-sensitive, space-constrained embedded applications requiring rich analog integration, low-power operation, and ARM Cortex-M3 performance - optimized for appliance controls, motor drives, and sensor hubs.
FAQ
What is the maximum operating temperature range for STM32F100CBT6BTR?
The STM32F100CBT6BTR is qualified for industrial temperature range: –40 °C to +85 °C ambient. This is verified per ST's qualification standard AEC-Q100 Grade 2 (for automotive-adjacent use) and supported by thermal characteristics in Section 6.5 of the datasheet, with junction temperature limits defined for LQFP48 package under specified PCB copper area conditions.
Does STM32F100CBT6BTR support USB device functionality?
No, STM32F100CBT6BTR does not integrate a USB peripheral. It lacks USB transceivers, PHY, and associated registers. Communication is limited to USART (with IrDA/LIN/ISO7816 modes), SPI, I²C, and CEC. For USB connectivity, external USB-UART bridges (e.g., CP2102) or migration to STM32F103 or G0-series MCUs is required.
How many external interrupt lines are available on the LQFP48 package?
The LQFP48 variant provides 16 external interrupt lines mapped across GPIO ports PA–PC. Each of the 37 GPIOs can be configured as EXTI sources, but only 16 unique EXTI lines (EXTI0–EXTI15) exist; multiple pins share the same line (e.g., PA0, PB0, PC0 all map to EXTI0), requiring software-based pin identification in the ISR.
Can the internal 40 kHz RC oscillator be used as the system clock source?
Yes, the 40 kHz LSI RC oscillator can serve as the system clock source via the RCC clock configuration registers. However, it is intended primarily for RTC and independent watchdog operation. Using it for SYSCLK results in ~40 kHz CPU frequency - insufficient for most application code but valid for ultra-low-power standby wake-up sequencing or RTC calibration routines.
STM32F100CBT6BTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F1
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F100CBT6BTR FAQ
1.How can I place an order for STM32F100CBT6BTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F100CBT6BTR 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 STM32F100CBT6BTR reliable?
The price and inventory of STM32F100CBT6BTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F100CBT6BTR is usually 5 days.
3.What payment methods are accepted for STM32F100CBT6BTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F100CBT6BTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F100CBT6BTR?
STM32F100CBT6BTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F100CBT6BTR 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 STM32F100CBT6BTR?
For technical support, including STM32F100CBT6BTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F100CBT6BTR requirements.
6.How does Aetrix verify that STM32F100CBT6BTR is sourced from the original manufacturer or authorized distributors?
All STM32F100CBT6BTR 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 STM32F100CBT6BTR meets industry standards.
7.What is the process for return or replacement of STM32F100CBT6BTR?
All STM32F100CBT6BTR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F100CBT6BTR, 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 STM32F100CBT6BTR part is unused and in its original packaging.
Return procedure for STM32F100CBT6BTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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