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STMicroelectronics STM32F100RCT7B
- Part No.:
- STM32F100RCT7B
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F100RCT7B.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
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Product details
Overview
STM32F100RCT7B from STMicroelectronics is a 32-bit ARM Cortex-M3 microcontroller in LQFP64 package, featuring 256 KB Flash, 24 MHz max CPU frequency, 12-bit ADC with 16 channels, dual 12-bit DACs, and 8 communication interfaces including USART, SPI, I²C, and 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 STM32F100RCT7B datasheet, STM32F100RCT7B pinout, STM32F100RCT7B application, or STM32F100RCT7B equivalent, key selection criteria include Flash size (256 KB), SRAM capacity (32 KB), 64-pin LQFP package compatibility, real-time clock with VBAT backup, and integrated analog peripherals (ADC+DAC) for closed-loop control systems.
Technical Context
The STM32F100RCT7B implements an ARM Cortex-M3 core with single-cycle multiply and hardware divide, delivering 1.25 DMIPS/MHz at 24 MHz. Its clock system integrates 4–24 MHz HSE, 8 MHz factory-trimmed HSI, 40 kHz LSI, and PLL for flexible system timing.
It features a 7-channel DMA controller servicing timers, ADC, SPI, I²C, USART, and DAC; nested vectored interrupt controller (NVIC) supporting up to 68 interrupts; and memory-mapped peripherals accessible via AHB/APB buses with remappable GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 24 MHz max frequency - enables deterministic real-time execution for motor control loops with ≤41.7 ns instruction cycle. |
| Flash Memory | 256 KB - sufficient for bootloader + application firmware + OTA update partition in resource-constrained embedded devices. |
| SRAM | 32 KB - supports real-time data buffering for ADC sampling at 1 MSPS and simultaneous UART logging without external RAM. |
| ADC | 1 × 12-bit, 1.2 µs conversion, 16 channels - allows concurrent monitoring of voltage, current, temperature, and position feedback in servo drives. |
| DAC | 2 × 12-bit - provides precise analog setpoint generation for PID output or programmable reference voltage in power supply controllers. |
| Timers | 12 timers including advanced-control timer with dead-time generation - enables 3-phase motor gate drive with hardware fault protection. |
| Communication | Up to 3 USARTs (LIN/IrDA), 2 SPIs (12 Mbit/s), 2 I²C, CEC - supports multi-protocol fieldbus connectivity in home automation hubs. |
| Supply Range | 2.0–3.6 V - compatible with single-cell Li-ion (3.0–3.6 V) and regulated 3.3 V rails without level-shifting components. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Pin count and layout optimized for compact PCB routing with full 5 V-tolerant I/O on all GPIOs except analog inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; mandatory 100 nF ceramic capacitor per VDD pin per datasheet Section 5.3.6. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 10 µs minimum pulse width; supports external watchdog or power-on reset circuitry. |
| BOOT0 | Boot mode selection | High at power-up selects system memory boot (for DFU); low selects main Flash - critical for field firmware recovery sequences. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | All 51 GPIOs support interrupt-on-change and alternate functions; PC13–PC15 reserved for RTC oscillator and tamper detection. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7 | ADC1_INx / DAC_OUTx | Direct analog input mapping to ADC channel 1–7 and DAC outputs - enables sensor signal chain integration without external muxing. |
| PA9, PA10, PB6, PB7, PB10, PB11 | USART1_TX/RX, I²C1_SCL/SDA, I²C2_SCL/SDA | Hardware-peripheral mapped pins - eliminate bit-banged protocol overhead and guarantee timing compliance for SMBus/PMBus. |
Key Features
| Feature | Design Value |
|---|---|
| Temperature sensor | Integrated calibrated sensor (±1.5°C accuracy) enables self-monitoring of die temperature for thermal throttling in fanless enclosures. |
| Programmable voltage detector (PVD) | Configurable trip points (2.2–2.9 V) allow early brown-out warning before system reset - critical for safe EEPROM write abort. |
| Serial wire debug (SWD) | 2-pin debug interface (SWCLK/SWDIO) reduces test point count and supports real-time trace without JTAG pin overhead. |
| CRC calculation unit | Hardware-accelerated CRC-32 generator - offloads checksum computation from CPU during firmware image verification or packet integrity checks. |
| 96-bit unique ID | Factory-programmed serial number enables secure device binding in IoT node authentication and license enforcement schemes. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: 3-phase BLDC motor drive with Hall-effect commutation and current sensing. IC Role / Device Role / Timing Role: Real-time PWM generation, ADC-sampled phase current acquisition, and closed-loop speed regulation via advanced-control timer and NVIC. Use Value: Hardware dead-time insertion prevents shoot-through; 12-bit DAC sets precise reference for current sense amplifiers. |
Use Scenario: DIN-rail mounted electricity meter with tariff switching and tamper detection. IC Role / Device Role / Timing Role: RTC-backed time-stamping of energy pulses, secure storage of billing data in backup registers, and optical IR communication via USART. Use Value: VBAT-powered RTC maintains calendar accuracy during mains failure; tamper-detect pins (PC13–PC15) trigger immediate data wipe on enclosure breach. |
| Home Automation Hub | Portable Medical Sensor |
Use Scenario: Multi-protocol gateway aggregating Zigbee, BLE, and wired KNX devices. IC Role / Device Role / Timing Role: Concurrent UART (for BLE module), I²C (for environmental sensors), and CEC (for TV control) with DMA-driven data movement. Use Value: 32 KB SRAM buffers multiple protocol stacks; 5 V-tolerant I/O simplifies interface to legacy 5 V sensor modules. |
Use Scenario: Battery-powered ECG front-end with analog signal conditioning and wireless telemetry. IC Role / Device Role / Timing Role: Low-noise ADC sampling at 1 kSPS, digital filtering in Cortex-M3 core, and ultra-low-power Stop mode between measurements. Use Value: 1.2 µs ADC conversion minimizes sampling aperture error; Stop mode current <1.7 µA extends 200 mAh coin cell life to >2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072RBT6 | ARM Cortex-M0, 48 MHz, 128 KB Flash, no DAC, single 12-bit ADC (16 ch) | Lacks dual DAC and advanced timer dead-time control - unsuitable for analog setpoint generation or 3-phase motor drive. | Select when cost sensitivity outweighs analog peripheral requirements and higher clock speed suffices for simpler control tasks. |
| STM32G071RBT6 | ARM Cortex-M0+, 64 MHz, 128 KB Flash, 12-bit ADC (19 ch), 1× DAC, enhanced security | Single DAC limits dual-output applications; lacks CEC interface but adds AES crypto engine for secure firmware updates. | Prefer for cloud-connected devices requiring TLS handshake acceleration and secure boot, where analog output count is secondary. |
Compared with STM32F100RCT7B, STM32F072RBT6 trades analog capability for lower BOM cost, while STM32G071RBT6 shifts emphasis from dual analog outputs to cryptographic security - making the F100RCT7B optimal for mixed-signal industrial control where both precision DACs and CEC are required.
Availability
STM32F100RCT7B is available at Aetrix Electronics and suitable for industrial motor control, smart metering, home automation gateways, and portable medical sensors requiring stable component supply across extended product lifecycles.
Supply support for STM32F100RCT7B 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 STM32F100 value line targets cost-sensitive, low-power embedded applications requiring rich analog integration and industrial-grade reliability - specifically engineered for sensor nodes, motor drives, and metering platforms operating at ambient temperatures up to 105°C.
FAQ
What is the maximum operating temperature range for STM32F100RCT7B?
The STM32F100RCT7B is rated for industrial temperature range: –40°C to +105°C. This is confirmed in Section 5.3.1 of the datasheet (DocID16455 Rev 9), where ambient temperature (TA) specifications are defined for all electrical characteristics, including Flash programming and RTC operation with VBAT.
Does STM32F100RCT7B support USB device functionality?
No, the STM32F100RCT7B does not include a USB peripheral. The STM32F100 series lacks USB PHY and controller hardware; USB connectivity requires external transceivers or migration to STM32F103 or STM32F072 families which integrate full-speed USB 2.0 device interfaces.
Can the internal 40 kHz RC oscillator be used as the RTC clock source?
Yes, the internal 40 kHz RC oscillator (LSI) is a valid clock source for the RTC, as documented in Section 2.2.14 and Table 24 of the datasheet. However, its typical accuracy is ±10% over temperature and voltage, so it is suitable only for non-critical timekeeping; for calendar accuracy, the 32.768 kHz external crystal (LSE) is recommended.
What debug interfaces are supported on STM32F100RCT7B?
The device supports Serial Wire Debug (SWD) using SWCLK and SWDIO pins, and full JTAG via TMS, TCK, TDI, TDO, and TRST pins. SWD is the default and preferred interface due to its 2-pin footprint and full debug capability; JTAG remains available for legacy toolchains or boundary scan testing.
STM32F100RCT7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F1
- Packaging:
- Tray
- 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:
- 51
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F100RCT7B FAQ
1.How can I place an order for STM32F100RCT7B through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F100RCT7B 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 STM32F100RCT7B reliable?
The price and inventory of STM32F100RCT7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F100RCT7B is usually 5 days.
3.What payment methods are accepted for STM32F100RCT7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F100RCT7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F100RCT7B?
STM32F100RCT7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F100RCT7B 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 STM32F100RCT7B?
For technical support, including STM32F100RCT7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F100RCT7B requirements.
6.How does Aetrix verify that STM32F100RCT7B is sourced from the original manufacturer or authorized distributors?
All STM32F100RCT7B 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 STM32F100RCT7B meets industry standards.
7.What is the process for return or replacement of STM32F100RCT7B?
All STM32F100RCT7B units undergo pre-shipment inspection (PSI). If there is an issue with STM32F100RCT7B, 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 STM32F100RCT7B part is unused and in its original packaging.
Return procedure for STM32F100RCT7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F100RCT7B Tags
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