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STMicroelectronics ST7FMC2R6T6
- Part No.:
- ST7FMC2R6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
ST7FMC2R6T6.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,935
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Product details
Overview
ST7FMC2R6T6 from STMicroelectronics is an 8-bit motor control microcontroller with 60KB Flash, 1.5KB RAM, 10-bit ADC (16-channel), six PWM outputs for BLDC inverter control, and integrated motor safety features including emergency stop and write-once registers. It operates from 4.5–5.5V at ≤8MHz and supports -40°C to +125°C industrial temperature range.
For engineers reviewing the ST7FMC2R6T6 datasheet, ST7FMC2R6T6 pinout, ST7FMC2R6T6 application, or ST7FMC2R6T6 equivalent, this device is selected for embedded brushless motor control systems requiring real-time position sensing (Hall/sensorless), current regulation via on-chip op-amp/comparator, and LINSCI™ communication in automotive HVAC, power tools, and industrial fans.
Technical Context
The ST7FMC2R6T6 implements a dedicated Motor Control Peripheral (MTC) coprocessor supporting trapezoidal and sinusoidal commutation, with four analog inputs for rotor position detection and hardware blanking windows for noise immunity during switching transitions. Its MTC includes multiplier, programmable filters, and event counters for closed-loop timing precision.
It integrates a LINSCI™ interface compliant with LIN 2.0/SAE J2602, supporting both master and slave roles, and features a configurable window watchdog timer plus nested interrupt controller with 14 vectors and 16 external interrupt lines mapped across three vectors for fast fault response in motor drive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with 63 instructions, true bit manipulation, and 8×8 unsigned multiply for efficient motor control math. |
| Flash Memory | 60KB dual-voltage Flash with 100-cycle endurance and 40-year data retention at 85°C - enables field firmware updates via IAP/ICP. |
| ADC Resolution | 10-bit SAR ADC with 16 input channels - supports simultaneous sampling of phase currents and DC bus voltage for FOC algorithms. |
| PWM Outputs | Six high-sink (20mA) PWM channels with dead-time insertion and complementary mode - directly drives gate drivers in 3-phase inverter stages. |
| Operating Voltage | 4.5–5.5V supply range at fCPU ≤ 8MHz - ensures stable operation under automotive battery transients and industrial line variations. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and high-ambient industrial motor control environments. |
| Communication | LINSCI™ (LIN 2.0/SAE J2602) + SPI - provides diagnostics, parameter tuning, and host coordination without CAN infrastructure. |
Pinout & Package
LQFP64 package (14 × 14 mm, 0.5 mm pitch) with 60 I/O pins, including 41 alternate function lines and 12 high-sink outputs rated at 20mA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA6, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE5, PF0–PF5, PG0–PG7, PH0–PH7 | Multi-function I/O ports | Configurable as GPIO, PWM output, ADC input, timer capture/compare, or LINSCI/SPI signals - enables flexible board layout for motor control PCBs. |
| PC4 (MCCREF) | Motor control reference input | Becomes dedicated analog reference when MTC is enabled - disables digital I/O function to ensure stable bias for current sensing amplifiers. |
| PD1, PD0, PE0, PE1, PF0, PF1 | High-sink PWM outputs (HS) | Drive external N-channel MOSFET gate drivers directly - eliminates need for level-shifting buffers in low-voltage BLDC inverters. |
| PA3–PA6, PD2–PD3, PE2–PE3 | ADC input / timer capture | Simultaneously acquire rotor position (Hall sensors/encoder signals) and phase currents - critical for sensorless BEMF estimation and commutation timing. |
| PD5, PD6, PD7 | ICCDATA, RDI, TDO | Support In-Circuit Debug (ICD) via ST-LINK-compatible interface - enables real-time trace, breakpoint debugging, and flash programming during development. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control Coprocessor (MTC) | Hardware-accelerated commutation logic with blanking windows, event counters, and multiplier - reduces CPU load by >40% in real-time BLDC control loops. |
| On-chip Operational Amplifier & Comparator | Single OA + comparator with rail-to-rail input/output - enables direct current sensing and overcurrent protection without external signal conditioning. |
| Asynchronous Emergency Stop (MCES) | Dedicated hardware interrupt pin that forces immediate PWM shutdown - meets ISO 26262 ASIL-B functional safety requirements for motor stall/fault conditions. |
| LINSCI™ Interface | Full LIN 2.0 master/slave implementation with automatic checksum, sync field detection, and sleep/wake-up - simplifies integration into vehicle body networks. |
| Write-once Configuration Registers | Immutable MTC setup registers after initial programming - prevents runtime corruption of critical motor timing parameters during EMI events. |
Applications
| Automotive HVAC Blower | Industrial Fan Speed Control |
|---|---|
|
Use Scenario: Variable-speed centrifugal blower in passenger cabin climate system with thermal overload protection and speed feedback. IC Role / Device Role / Timing Role: Primary motor controller executing trapezoidal commutation, reading Hall sensors, regulating speed via PWM duty cycle, and reporting status over LIN bus. Use Value: Eliminates external op-amps and comparators for current sensing, reducing BOM count by 3 components while meeting AEC-Q100 Grade 1 qualification. |
Use Scenario: High-efficiency axial fan in HVAC ductwork requiring soft-start, torque compensation, and remote diagnostics. IC Role / Device Role / Timing Role: Standalone BLDC driver managing 3-phase inverter, measuring back-EMF for sensorless startup, and communicating fault codes via LINSCI™. Use Value: On-chip MTC coprocessor achieves <5μs commutation latency - improves airflow stability under varying static pressure loads. |
| Power Tool Motor Drive | Appliance Compressor Control |
|
Use Scenario: Cordless drill with torque limiting, battery voltage monitoring, and electronic braking. IC Role / Device Role / Timing Role: Real-time motor controller using ADC inputs for battery voltage and phase current, PWM outputs for gate drivers, and emergency stop via MCES pin. Use Value: 20mA high-sink PWM outputs drive discrete MOSFETs directly - avoids gate driver ICs and reduces PCB area by 12 mm². |
Use Scenario: Hermetic compressor in refrigeration unit requiring precise speed modulation based on evaporator temperature and condenser pressure. IC Role / Device Role / Timing Role: Dedicated motor controller acquiring analog sensor data, executing FOC-like algorithms via MTC acceleration, and adjusting PWM frequency dynamically. Use Value: Integrated 10-bit ADC with 16-channel mux supports simultaneous sampling of 3 thermistors and 2 pressure sensors - removes need for external multiplexer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushless motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN32F0A | Integrated 3-phase gate driver + 32-bit ARM Cortex-M0 core; no LINSCI™; 64KB Flash; 12KB RAM. | Targeted at higher-performance BLDC drives requiring vector control and faster loop rates (>20kHz). | Choose when migrating from 8-bit to 32-bit architecture and needing higher computational throughput for FOC. |
| MC9S08MP16 | Freescale 8-bit S08 core; 16KB Flash; 1KB RAM; no integrated op-amp/comparator; SCI-only (no LIN). | Designed for cost-sensitive industrial fans where LIN diagnostics are not required. | Prefer for legacy designs already using CodeWarrior toolchain and where external current sensing is acceptable. |
Compared with ST7FMC2R6T6, STSPIN32F0A offers greater processing headroom but requires external LIN transceiver and lacks write-once safety registers; MC9S08MP16 reduces system cost but increases component count and design complexity for motor protection functions.
Availability
ST7FMC2R6T6 is available at Aetrix Electronics and suitable for automotive HVAC blowers, industrial fan speed controllers, cordless power tools, and appliance compressors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ST7FMC2R6T6 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, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.
The ST7MC family was designed specifically for cost-effective, high-reliability brushless DC motor control in resource-constrained embedded systems - emphasizing integrated analog peripherals, motor safety logic, and LIN-based diagnostics.
FAQ
What is the maximum clock frequency supported by ST7FMC2R6T6?
The ST7FMC2R6T6 operates at a maximum CPU frequency of 8 MHz when supplied with 4.5–5.5 V. This limit is defined by its internal oscillator architecture and electrical characteristics - exceeding it risks timing violations in the MTC peripheral and ADC conversion accuracy. The device supports external clock input via EXTCLK_A/EXTCLK_B pins for synchronization with system clocks.
Does ST7FMC2R6T6 support sensorless BLDC control?
Yes - the ST7FMC2R6T6 supports sensorless commutation via back-EMF zero-crossing detection using its 10-bit ADC and dedicated input capture timers (ICAP1_A/ICAP2_A). The MTC peripheral includes hardware blanking windows to suppress noise during PWM switching, enabling reliable BEMF sampling even at low speeds down to 100 RPM.
How is the LINSCI™ interface implemented on ST7FMC2R6T6?
The LINSCI™ module is a full hardware UART with LIN-specific enhancements: automatic sync field detection, checksum generation/validation (classic and enhanced), and sleep/wake-up frame handling per LIN 2.0 specification. It operates independently of the CPU core and supports both master and slave modes without software overhead - verified in ST's AN2605 application note.
Can ST7FMC2R6T6 be programmed in-circuit after soldering?
Yes - ST7FMC2R6T6 supports In-Circuit Programming (ICP) via the ICC interface using pins PD5 (ICCDATA), PD6 (RDI), and PD7 (TDO) in conjunction with VPP/ICCSEL. This allows firmware updates on assembled PCBs without removing the MCU, provided the target board includes the required pull-up/pull-down resistors and isolation diodes per ST's UM0432 specification.
ST7FMC2R6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- ST7
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- LINbusSCI, SPI
- Peripherals:
- LVD, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.8V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST7FMC2R6T6 FAQ
1.How can I place an order for ST7FMC2R6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FMC2R6T6 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 ST7FMC2R6T6 reliable?
The price and inventory of ST7FMC2R6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FMC2R6T6 is usually 5 days.
3.What payment methods are accepted for ST7FMC2R6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FMC2R6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FMC2R6T6?
ST7FMC2R6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FMC2R6T6 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 ST7FMC2R6T6?
For technical support, including ST7FMC2R6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FMC2R6T6 requirements.
6.How does Aetrix verify that ST7FMC2R6T6 is sourced from the original manufacturer or authorized distributors?
All ST7FMC2R6T6 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 ST7FMC2R6T6 meets industry standards.
7.What is the process for return or replacement of ST7FMC2R6T6?
All ST7FMC2R6T6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FMC2R6T6, 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 ST7FMC2R6T6 part is unused and in its original packaging.
Return procedure for ST7FMC2R6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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