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STMicroelectronics ST7FMC1K2T6/TR
- Part No.:
- ST7FMC1K2T6/TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
ST7FMC1K2T6/TR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,125
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Product details
Overview
ST7FMC1K2T6/TR from STMicroelectronics is an 8-bit motor control microcontroller with nested interrupts, 8KB Flash program memory, 384B RAM, 10-bit ADC (16-channel), and integrated brushless DC (BLDC) motor control peripheral (MTC). It features five timers-including 16-bit Timer A/B, 8-bit PWM auto-reload timer (ART), and main clock controller-and dual communication interfaces: SPI and LINSCI™. It targets embedded BLDC inverter control in industrial fans, power tools, and HVAC blowers.
For engineers reviewing the ST7FMC1K2T6/TR datasheet, ST7FMC1K2T6/TR pinout, ST7FMC1K2T6/TR application, or ST7FMC1K2T6/TR equivalent, key selection considerations include its 60-pin LQFP package, 20mA high-sink PWM outputs, MTC coprocessor for sensorless/commutated control, real-time base timing, and LIN bus master/slave capability for automotive-grade diagnostics.
Technical Context
The ST7FMC1K2T6/TR implements a dedicated Motor Control Peripheral (MTC) with permanent magnet motor coprocessor logic-including multiplier, programmable filters, blanking windows, and event counters-enabling trapezoidal or sinusoidal commutation without CPU intervention. Its LINSCI™ interface supports both master and slave modes per ISO 9141-2 and LIN 2.x standards, with automatic checksum, sync field detection, and configurable baud rate.
It integrates an operational amplifier and comparator for analog current/voltage regulation, four rotor position sensing inputs (supporting Hall, encoder, tacho, or sensorless back-EMF), and six high-sink PWM output channels (20mA) directly mapped to motor phase drivers. The enhanced reset system includes low-voltage detector (LVD) and auxiliary voltage detector (AVD) with interrupt capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with 63 instructions, true bit manipulation, 8×8 unsigned multiply, and 17 addressing modes. |
| Flash Memory | 8KB dual-voltage Flash with read-out protection, 100 write cycles, 40-year data retention at 85°C. |
| ADC Resolution | 10-bit successive-approximation ADC with 16 input channels and programmable sampling time. |
| PWM Outputs | 6 high-sink PWM channels (20mA), supporting sine-wave or trapezoidal inverter control with emergency stop. |
| Operating Voltage | 4.5V to 5.5V supply range, compatible with standard 5V industrial logic and motor gate drivers. |
| Temperature Range | -40°C to +85°C industrial grade, validated for continuous operation in enclosed motor drive enclosures. |
| Clock Sources | Crystal/ceramic resonator (1–8MHz), external clock bypass, clock security system, and internal RC oscillator. |
Pinout & Package
LQFP64 (14 × 14 mm, 0.5 mm pitch) package with 60 functional pins - 48 I/O lines (including 41 alternate function assignments), 6 dedicated MTC PWM outputs, 4 analog inputs for rotor position, and 3 LINSCI™ signal pins (TX/RX/LIN_EN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA3 | PWM0–PWM3 outputs | Four of six high-sink (20mA) motor phase PWM outputs; PA0–PA3 support complementary dead-time insertion via MTC. |
| PC5–PC6 | MCPWMU / MCPWMV | Two additional high-sink PWM outputs; used with PA0–PA3 for 6-channel 3-phase inverter drive. |
| PC7 | MCPWMW | Sixth high-sink PWM output; completes full 3-phase bridge control with independent enable/disable. |
| PE0–PE3 | ICAP1_B / ICAP2_B / OCMP1_B / OCMP2_B | Back-EMF zero-crossing capture inputs for sensorless BLDC control; support edge-triggered event counting. |
| PF0–PF1 | MCDEM / MCZEM | Digital enable and zero-event marker inputs for Hall sensor or encoder-based commutation timing. |
| PD4 / PD5 | ICCCLK / ICCDATA | In-circuit programming interface pins; enable Flash reprogramming without removing MCU from PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Motor Control Coprocessor (MTC) | Hardware-accelerated BLDC control with multiplier, programmable filters, and blanking windows-reduces CPU load by >70% in sensorless FOC-like algorithms. |
| Integrated Analog Front-End | On-die op-amp and comparator enable closed-loop current regulation without external signal conditioning components. |
| LINSCI™ Interface | Fully compliant LIN 2.1 master/slave with automatic header detection, checksum validation, and configurable wake-up on bus activity. |
| High-Sink I/O Capability | 12 pins rated for 20mA sink current-directly drives optocouplers, gate drivers, or LED status indicators without external buffers. |
| Real-Time Base Timer (MCC/RTC) | Configurable real-time clock with beep generator and clock-out function-supports precise timing for fan speed ramping or thermal monitoring intervals. |
Applications
| Industrial Fan Control | Power Tool Motor Drive |
|---|---|
Use Scenario: Variable-speed centrifugal blower in HVAC systems requiring EMI-compliant commutation and thermal derating. IC Role / Device Role / Timing Role: Primary motor controller executing sensorless BLDC commutation, ADC-based current limiting, and LIN diagnostics reporting. Use Value: Integrated MTC and op-amp eliminate 3 external comparators and reduce BOM count by 22%, enabling compact 4-layer PCB layout. |
Use Scenario: Cordless drill with torque-responsive speed control and battery voltage compensation. IC Role / Device Role / Timing Role: Real-time motor phase timing generator using ART and 16-bit timers; LINSCI™ reports fault codes to host MCU over shared bus. Use Value: Six 20mA PWM outputs directly drive half-bridge gate drivers; 10-bit ADC monitors battery voltage and motor current with <1.5 LSB INL. |
| Automotive HVAC Blower | Home Appliance Compressor |
Use Scenario: CAN-LIN gateway-connected cabin air blower with OEM diagnostic requirements (UDS over LIN). IC Role / Device Role / Timing Role: LIN master node managing speed setpoint, temperature feedback, and error logging; MTC handles commutation timing. Use Value: LINSCI™ supports ISO 14229 UDS services via standardized frame formatting-eliminates need for external LIN transceiver firmware stack. |
Use Scenario: Inverter-driven refrigerator compressor operating in sealed environment with limited cooling airflow. IC Role / Device Role / Timing Role: Thermal-aware motor controller using AVD and LVD interrupts to throttle speed during overtemperature events. Use Value: Enhanced low-voltage supervisor (LVD) with interrupt capability enables safe shutdown at 4.25V-prevents torque collapse during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLDC motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN32F0A | Integrated 3-phase gate driver + ARM Cortex-M0 core; no LINSCI™; 128KB Flash; requires external shunt amplifiers. | Targets higher-power (>300W) applications with complex FOC; lacks native LIN but supports UART-to-LIN bridge via software. | Choose when needing higher integration density and FOC capability-but requires redesigning communication and analog front-end. |
| Infineon XMC4200-F64K256 | 32-bit ARM Cortex-M4 with hardware FOC engine, 12-bit ADC, and CAN/LIN peripherals; 256KB Flash; 1.8V core supply. | Designed for multi-motor systems with CAN coordination; supports advanced observer-based sensorless control not available in ST7. | Choose for scalable platforms requiring future CAN expansion or higher computational throughput-adds complexity and cost. |
Compared with ST7FMC1K2T6/TR, STSPIN32F0A offers higher integration but sacrifices LIN-native diagnostics and increases BOM dependency on external analog components; XMC4200-F64K256 delivers superior processing and sensorless accuracy but requires significant firmware rearchitecture and higher power supply complexity.
Availability
ST7FMC1K2T6/TR is available at Aetrix Electronics and suitable for industrial fan control, power tool motor drives, and automotive HVAC blower systems requiring stable component supply across extended product lifecycles.
Supply support for ST7FMC1K2T6/TR 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, specializing in microcontrollers, power management, and automotive ICs with vertical manufacturing and broad industrial qualification.
The ST7MC family was designed specifically for cost-sensitive, high-volume BLDC motor control applications-emphasizing hardware-accelerated commutation, robust analog integration, and LIN-compliant diagnostics in 8-bit architecture.
FAQ
What is the maximum CPU frequency supported by ST7FMC1K2T6/TR?
The ST7FMC1K2T6/TR operates up to 8 MHz CPU frequency under 4.5–5.5 V supply, with clock sources including crystal oscillators (1–8 MHz), ceramic resonators, or external clock input. Its clock security system detects oscillator failure and triggers safe shutdown via reset or interrupt.
Does ST7FMC1K2T6/TR support sensorless BLDC control out of the box?
Yes-it includes dedicated hardware for sensorless operation: four analog inputs for back-EMF sampling, two ICAP inputs (PE2/PE3) for zero-crossing detection, and MTC logic that autonomously manages blanking windows and commutation timing without CPU intervention.
Can ST7FMC1K2T6/TR be programmed in-circuit after soldering?
Yes-via ICC (In-Circuit Communication) using PD4 (ICCCLK) and PD5 (ICCDATA) pins. No external programmer is required; the interface supports full Flash erase, program, and verify operations while mounted on the target board.
How many independent PWM channels does ST7FMC1K2T6/TR provide for motor phase control?
It provides six independent high-sink PWM outputs (PA0–PA3, PC5–PC6, PC7), all configurable for complementary mode with programmable dead time. These are hardwired to the MTC peripheral and support synchronized 3-phase inverter switching with asynchronous emergency stop.
ST7FMC1K2T6/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- ST7
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- LINbusSCI
- Peripherals:
- LVD, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 17
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 3.8V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST7FMC1K2T6/TR FAQ
1.How can I place an order for ST7FMC1K2T6/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FMC1K2T6/TR 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 ST7FMC1K2T6/TR reliable?
The price and inventory of ST7FMC1K2T6/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FMC1K2T6/TR is usually 5 days.
3.What payment methods are accepted for ST7FMC1K2T6/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FMC1K2T6/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FMC1K2T6/TR?
ST7FMC1K2T6/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FMC1K2T6/TR 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 ST7FMC1K2T6/TR?
For technical support, including ST7FMC1K2T6/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FMC1K2T6/TR requirements.
6.How does Aetrix verify that ST7FMC1K2T6/TR is sourced from the original manufacturer or authorized distributors?
All ST7FMC1K2T6/TR 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 ST7FMC1K2T6/TR meets industry standards.
7.What is the process for return or replacement of ST7FMC1K2T6/TR?
All ST7FMC1K2T6/TR units undergo pre-shipment inspection (PSI). If there is an issue with ST7FMC1K2T6/TR, 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 ST7FMC1K2T6/TR part is unused and in its original packaging.
Return procedure for ST7FMC1K2T6/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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