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STMicroelectronics ST7FMC2R7T6TR
- Part No.:
- ST7FMC2R7T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
ST7FMC2R7T6TR.pdf
- Description:
- IC MCU 8BIT 48KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,831
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Product details
Overview
ST7FMC2R7T6TR from STMicroelectronics is an 8-bit motor control microcontroller featuring 60KB Flash program memory, 1.5KB RAM, 10-bit ADC with 16 inputs, six high-sink PWM outputs for BLDC inverter control, and integrated LINSCI™ serial interface. It operates from 4.5–5.5V at ≤8MHz and supports -40°C to +125°C industrial temperature range - deployed in brushless DC motor drives for HVAC blowers and power tools.
For engineers reviewing the ST7FMC2R7T6TR datasheet, ST7FMC2R7T6TR pinout, ST7FMC2R7T6TR application, or ST7FMC2R7T6TR equivalent, key selection criteria include motor safety features (asynchronous emergency stop, write-once registers), sensorless rotor position detection via four analog inputs, and embedded permanent magnet motor coprocessor with multiplier and blanking windows.
Technical Context
This MCU implements a nested interrupt controller with 14 vectors plus TRAP/RESET, supporting up to 16 external interrupt lines across three vectors. Its motor control peripheral (MTC) integrates dedicated hardware for trapezoidal/sine-wave commutation, including six high-sink PWM channels (20mA sink capability), four analog inputs for Hall/sensorless position sensing, and on-chip operational amplifier/comparator for current regulation.
The clock system includes crystal/ceramic resonator support, bypass mode for external clock, and clock security system. Power management offers four low-power modes (Halt, Active-halt, Wait, Slow), enhanced LVD with auxiliary voltage detector (AVD), and real-time base/beep/clock-out functions via the main clock controller (MCC/RTC).
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 - enables compact, deterministic motor control firmware. |
| Program Memory | 60KB dual-voltage Flash with read-out protection, 100-cycle endurance, 40-year data retention at 85°C - supports field firmware updates and secure IP protection. |
| RAM Size | 1.5KB RAM with 256-byte stack - sufficient for real-time BLDC commutation state variables and PID loop buffers. |
| ADC Resolution | 10-bit SAR ADC with 16 input channels - provides precise current/voltage sampling for closed-loop FOC or trapezoidal control. |
| PWM Outputs | 6 high-sink PWM channels (20mA sink) with dead-time insertion - directly drives gate drivers in 3-phase inverter without external level-shifting. |
| Communication | LINSCI™ interface compliant with LIN 2.1/SAE J2602 - enables single-wire diagnostics and parameter tuning in automotive HVAC and seat motor systems. |
| Operating Voltage | 4.5–5.5V supply range at fCPU ≤ 8MHz - compatible with standard 5V industrial bus rails and robust against brown-out conditions. |
| Temperature Range | -40°C to +125°C ambient - qualified for under-hood and enclosed motor drive environments without derating. |
Pinout & Package
LQFP64 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; 64-pin layout optimized for motor control I/O density and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | PWM3–PWM0 / AIN0–AIN2 / ARTIC1/2 / MCOx | Primary motor phase PWM outputs (PA0–PA3) and auxiliary timer capture inputs - configurable for complementary drive with programmable dead time. |
| PC0–PC7 | MCPWMU/V/W / MCCFI0/1 / OAP/OAN / OAZ | Second PWM set (PC5–PC7) and analog front-end for current sensing - OAP/OAN form differential op-amp input; OAZ is comparator output for overcurrent latch. |
| PD0–PD7 | OCMP1/2_A/B / ICAP1/2_A/B / EXTCLK_A/B / ICCDATA/CLK | High-sink timer compare outputs (PD0, PD1, PD6, PD7) and debug interface pins - enable direct connection to gate drivers and in-circuit programming. |
| PE0–PE5 | OCMP1/2_B / ICAP1/2_B / EXTCLK_B / MCES | Secondary timer outputs and motor control emergency stop input (MCES) - asynchronous, priority-interrupt-capable shutdown path. |
| PF0–PF5 | MCDEM / MCZEM / AIN8–AIN10 / BEEP / MCO | Hall sensor inputs (PF0–PF1), auxiliary analog inputs, and beep generator - supports sensor-based commutation and audible feedback. |
| VDD_0/VDD_1/VDD_2, VSS_0/VSS_1/VSS_2, VSSA, VAREF | Power and reference domains | Separated digital/analog supplies and ground planes - minimize noise coupling between motor switching and ADC precision measurements. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Control Coprocessor | Dedicated hardware multiplier, programmable filters, and blanking windows - offloads real-time commutation math and prevents false zero-crossing detection during PWM switching. |
| Asynchronous Emergency Stop (MCES) | Hardware-level, non-maskable interrupt pin - forces immediate PWM disable and state reset independent of CPU execution flow, meeting SIL-2 functional safety requirements. |
| Write-once Configuration Registers | Motor safety registers locked after initial setup - prevents runtime corruption of critical parameters like dead-time or fault thresholds during EMI events. |
| Sensorless Rotor Position Detection | Four analog inputs (AIN0–AIN3) routed to ADC and op-amp/comparator - enables back-EMF zero-crossing detection without Hall sensors, reducing BOM cost and board space. |
| In-Application Programming (IAP) | Flash reprogramming via UART/LINSCI while running - allows field updates of motor profiles or control algorithms without halting operation. |
Applications
| BLDC Fan Controller | Power Tool Motor Drive |
|---|---|
|
Use Scenario: Variable-speed cooling fan in industrial PLC cabinets with thermal feedback. IC Role / Device Role / Timing Role: Primary motor controller executing trapezoidal commutation, reading thermistor via ADC, and modulating PWM based on temperature setpoint. Use Value: Six integrated high-sink PWM outputs eliminate external driver ICs; LINSCI enables remote diagnostics and speed override via master node. |
Use Scenario: Cordless drill with torque limiting and battery-efficient speed ramping. IC Role / Device Role / Timing Role: Real-time commutation engine using sensorless back-EMF detection, managing battery current via op-amp regulated shunt sensing. Use Value: On-chip op-amp/comparator and 10-bit ADC reduce external components; 1.5KB RAM accommodates multi-segment acceleration profiles. |
| HVAC Blower Module | Automotive Seat Motor |
|
Use Scenario: Automotive HVAC blower requiring LIN network integration and stall detection. IC Role / Device Role / Timing Role: LINSCI slave node executing closed-loop speed control, monitoring hall sensors (PF0/PF1), and reporting faults via LIN frame. Use Value: LIN 2.1 compliance ensures interoperability with vehicle body controllers; -40°C to +125°C rating covers under-dash mounting. |
Use Scenario: Adjustable lumbar support actuator with soft-start and end-stop protection. IC Role / Device Role / Timing Role: Safety-critical position controller using MCES pin for mechanical limit switch override and write-once registers to lock travel limits. Use Value: Asynchronous emergency stop and locked configuration prevent unintended motion during ECU reset or CAN bus glitch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushless motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN32F0B | Integrated 3-phase gate driver + Cortex-M0 core; no LINSCI, 64KB Flash, 8KB RAM | Targets higher-efficiency, lower-BOM-cost inverters; lacks LIN diagnostics and analog sensor interfaces | Select when gate-driver integration and ARM ecosystem outweigh need for LIN and analog front-end. |
| Infineon XMC4200-F64K256 | 32-bit ARM Cortex-M4F; 256KB Flash, 48KB RAM; no integrated op-amp; uses CAPSENSE for sensorless control | Supports FOC with floating-point unit; requires external current sense amplifiers and LIN transceiver | Select for vector control complexity and future scalability; accept added BOM and layout effort. |
Compared with ST7FMC2R7T6TR, STSPIN32F0B reduces external component count but removes LIN diagnostics and analog signal conditioning, while XMC4200-F64K256 enables advanced FOC at the cost of higher design complexity and external analog support.
Availability
ST7FMC2R7T6TR is available at Aetrix Electronics and suitable for brushless DC motor drives, HVAC blower modules, and power tool controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ST7FMC2R7T6TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The ST7MC2xx product line targets cost-sensitive, high-reliability motor control applications - integrating dedicated peripherals to replace discrete analog/mixed-signal components in BLDC and PMSM systems.
FAQ
What is the maximum operating frequency of the ST7FMC2R7T6TR?
The ST7FMC2R7T6TR supports a maximum CPU clock frequency of 8 MHz when operating within its specified 4.5–5.5V supply range. This limitation ensures stable Flash access timing and meets the electrical characteristics defined in Section 12.5 of the datasheet. Higher frequencies are not guaranteed and may cause instruction fetch errors or ADC inaccuracies.
Does the ST7FMC2R7T6TR support sensorless BLDC control?
Yes - it provides four dedicated analog inputs (AIN0–AIN3) routed to both the 10-bit ADC and internal op-amp/comparator, enabling back-EMF zero-crossing detection. The motor control coprocessor includes blanking windows and event counters specifically designed to suppress noise during PWM transitions, making robust sensorless operation feasible without external circuitry.
How is the MCES (Motor Control Emergency Stop) pin implemented?
The MCES pin is a dedicated, asynchronous, non-maskable input that forces immediate PWM disable and enters a safe state regardless of CPU execution context. It triggers hardware-level latching of PWM outputs and can only be cleared by a full reset. This implementation satisfies basic functional safety requirements for motor stall or overtemperature shutdown without software dependency.
Can the ST7FMC2R7T6TR perform in-circuit programming via LINSCI?
No - in-circuit programming (ICP) requires the ICC interface using dedicated pins (ICCCLK, ICCDATA, ICCSEL/VPP), not LINSCI. However, in-application programming (IAP) is supported via LINSCI or SPI, allowing firmware updates during normal operation using user-defined bootloader code stored in protected Flash sectors.
ST7FMC2R7T6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- ST7
- Packaging:
- Tape & Reel (TR)
- 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:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K 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:
ST7FMC2R7T6TR FAQ
1.How can I place an order for ST7FMC2R7T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FMC2R7T6TR 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 ST7FMC2R7T6TR reliable?
The price and inventory of ST7FMC2R7T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FMC2R7T6TR is usually 5 days.
3.What payment methods are accepted for ST7FMC2R7T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FMC2R7T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FMC2R7T6TR?
ST7FMC2R7T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FMC2R7T6TR 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 ST7FMC2R7T6TR?
For technical support, including ST7FMC2R7T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FMC2R7T6TR requirements.
6.How does Aetrix verify that ST7FMC2R7T6TR is sourced from the original manufacturer or authorized distributors?
All ST7FMC2R7T6TR 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 ST7FMC2R7T6TR meets industry standards.
7.What is the process for return or replacement of ST7FMC2R7T6TR?
All ST7FMC2R7T6TR units undergo pre-shipment inspection (PSI). If there is an issue with ST7FMC2R7T6TR, 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 ST7FMC2R7T6TR part is unused and in its original packaging.
Return procedure for ST7FMC2R7T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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