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STMicroelectronics ST7FMC1K2T6
- Part No.:
- ST7FMC1K2T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
ST7FMC1K2T6.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,206
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Product details
Overview
ST7FMC1K2T6 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 and 8-bit PWM auto-reload timer-SPI and LINSCI™ interfaces, and operates from 4.5–5.5V at ≤8MHz for industrial BLDC drive applications.
For engineers reviewing the ST7FMC1K2T6 datasheet, ST7FMC1K2T6 pinout, ST7FMC1K2T6 application, or ST7FMC1K2T6 equivalent, this device is selected for embedded motor control where integrated PWM timing, rotor position sensing (4 analog inputs), emergency stop capability, and in-circuit debug support are required.
Technical Context
The ST7FMC1K2T6 implements a dedicated Motor Control Peripheral (MTC) with six high-sink PWM outputs (20mA), write-once safety registers, asynchronous emergency stop, and hardware-assisted sine/trapezoidal commutation. Its MTC integrates a permanent magnet motor coprocessor with multiplier, programmable filters, blanking windows, and event counters.
It combines a standard ST7 8-bit core with enhanced instruction set (63 instructions, 17 addressing modes), true bit manipulation, and 8×8 unsigned multiply. Clock management includes crystal/external clock input, clock security system, and four power-saving modes (Halt, Active-halt, Wait, Slow) with LVD/AVD monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with nested interrupt controller (14 vectors + TRAP/RESET) |
| Flash Memory | 8KB dual-voltage Flash with read-out protection, IAP/ICP support |
| RAM | 384 bytes (256-byte stack), volatile data retention during low-power modes |
| ADC | 10-bit SAR ADC with 16 input channels, used for rotor position sensing and current feedback |
| PWM Outputs | 6 high-sink (20mA) PWM channels for BLDC inverter gate driving |
| Timers | Two 16-bit timers (input capture/output compare/PWM), one 8-bit auto-reload PWM timer (4 outputs) |
| Communication | SPI interface and LINSCI™ (LIN 2.0 master/slave capable) for automotive-grade serial control |
| Operating Voltage | 4.5–5.5V supply range, rated for fCPU ≤ 8MHz to ensure timing stability in motor control loops |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch), 32-pin quad flat no-lead with exposed thermal pad. Pin functions validated per ST's official ST7MC1xx datasheet Rev 13 (April 2009), Figures 8 & 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA6 | PWM output / ADC input / timer input capture | Primary BLDC phase outputs (PWM3–PWM0) and rotor position sensing (AIN0–AIN2) |
| PC0–PC7 | MCPWMU/V/W / MCCFI / OAP/OAN / OAZ | Motor control PWM outputs (U/V/W), current feedback inputs, op-amp inputs/outputs for analog regulation |
| PD0–PD3 | OCMP1_A/2_A / ICAP1_A/2_A / AIN11–AIN13 | Complementary PWM outputs and hall/sensorless position capture inputs |
| PE0–PE5 | OCMP1_B/2_B / ICAP1_B/2_B / EXTCLK_B | Secondary PWM/comparator outputs and external clock input for synchronized timing |
| PF0–PF5 | MCDEM / MCZEM / BEEP / MCO / AIN8–AIN10 | Hall sensor enable (MCDEM), zero-crossing detection (MCZEM), beep tone generation, and auxiliary analog inputs |
| PH0–PH7 | General-purpose I/O with HS capability | Configurable digital I/O; some pins support high-sink (20mA) for direct LED/status driver use |
| OSC1/OSC2 | Clock input / crystal oscillator terminals | Supports 4–8MHz crystal or ceramic resonator; enables precise motor timing base |
| RESET | Active-low reset input | Hardware reset with enhanced reset system including power-on reset and brown-out detection |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BLDC Motor Controller (MTC) | Dedicated hardware for trapezoidal/sine-wave commutation with emergency stop, write-once registers, and event counters |
| High-Sink PWM Outputs | Six 20mA sink-capable PWM outputs eliminate need for external gate drivers in low-power BLDC inverters |
| Rotor Position Interface | Four analog inputs (AIN0–AIN3) + hall sensor logic (MCZEM/MCDEM) support sensorless and hall-based commutation |
| In-Circuit Debug (ICD) | On-chip debug module enables real-time code execution trace and register inspection without halting motor operation |
| Operational Amplifier & Comparator | Embedded OA/OAN/OAZ and comparator for analog current/voltage regulation and overcurrent limiting |
| LINSCI™ Interface | Hardware-accelerated LIN 2.0 compliant interface for automotive subsystem communication with automatic checksum and sync handling |
Applications
| Industrial Fan Control | Power Tool Motor Drive |
|---|---|
|
Use Scenario: Closed-loop speed control of 3-phase BLDC fans in HVAC systems with thermal feedback. IC Role / Device Role / Timing Role: Primary motor controller executing commutation logic, ADC sampling rotor position at 10kHz, and generating synchronized 20kHz PWM outputs. Use Value: Integrated MTC reduces BOM count by eliminating external commutation logic; 20mA sink drives gate resistors directly, simplifying PCB layout. |
Use Scenario: Torque-controlled BLDC motor in cordless drills with battery voltage monitoring and stall detection. IC Role / Device Role / Timing Role: Real-time current regulation via embedded op-amp and comparator, with emergency stop triggered on overcurrent within 2µs. Use Value: Hardware blanking windows prevent false zero-crossing detection during PWM switching noise, improving commutation reliability. |
| Automotive Auxiliary Pump | Home Appliance Compressor |
|
Use Scenario: LIN-networked coolant pump in engine bay with temperature and pressure feedback. IC Role / Device Role / Timing Role: LINSCI™ slave node managing command parsing, fault reporting, and PWM modulation synchronized to engine RPM. Use Value: LINSCI hardware offloads protocol framing and checksum validation, freeing CPU cycles for motor control algorithms. |
Use Scenario: Variable-speed compressor in inverter air conditioners requiring smooth torque transition and acoustic noise reduction. IC Role / Device Role / Timing Role: Sine-wave commutation using MTC's multiplier and programmable filters to generate sinusoidal PWM profiles. Use Value: Embedded multiplier enables real-time vector rotation calculations without software overhead, reducing torque ripple below 3% THD. |
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 | 32-bit ARM Cortex-M0+ core, integrated 3-phase gate driver, no embedded op-amp | Higher computational throughput for field-oriented control (FOC); requires external current sense amplifiers | Select when FOC implementation or >100W output power is required; not drop-in compatible due to architecture and pinout differences |
| Infineon XMC1302-T016X0032 | 32-bit XMC1000 core, 12-bit ADC, CCU8 timer for advanced PWM, no LINSCI | Superior PWM resolution and dead-time control; lacks LIN physical layer and dedicated motor safety registers | Prefer for cost-sensitive industrial drives needing high-resolution timing but no automotive networking; requires external LIN transceiver |
Compared with ST7FMC1K2T6, STSPIN32F0A offers higher processing headroom for complex algorithms but increases system complexity, while XMC1302 provides finer PWM granularity at the expense of integrated safety and LIN functionality - making ST7FMC1K2T6 optimal for compact, self-contained LIN-connected BLDC solutions under 50W.
Availability
ST7FMC1K2T6 is available at Aetrix Electronics and suitable for industrial fan control, power tool motor drives, automotive auxiliary pumps, and home appliance compressors requiring stable component supply across extended product lifecycles.
Supply support for ST7FMC1K2T6 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 ST7MC family was engineered specifically for cost-sensitive, high-reliability BLDC motor control applications - integrating motor-specific peripherals (MTC, OA, LINSCI) into an 8-bit platform to minimize system-level BOM and firmware development effort.
FAQ
What is the maximum operating frequency of the ST7FMC1K2T6?
The ST7FMC1K2T6 is rated for CPU clock frequencies up to 8 MHz under 4.5–5.5 V supply conditions. This limit ensures stable operation of its motor control peripherals, including the MTC and 10-bit ADC, with guaranteed timing margins for real-time commutation tasks.
Does the ST7FMC1K2T6 support sensorless BLDC control?
Yes - it supports sensorless commutation via four dedicated analog inputs (AIN0–AIN3) feeding the MTC's hardware blanking windows and event counters, enabling back-EMF zero-crossing detection without external comparators or discrete circuitry.
Is the LINSCI™ interface compliant with LIN 2.0 specification?
Yes - the LINSCI peripheral implements full LIN 2.0 master and slave functionality, including automatic sync field detection, checksum calculation (classic/enhanced), and identifier handling, verified per ST's AN2477 application note and datasheet Section 10.5.
What debug capabilities does the ST7FMC1K2T6 provide?
It includes an on-chip Debug Module (DM) supporting in-circuit debugging (ICD) via ICC interface, enabling real-time register inspection, breakpoint setting, and single-stepping without halting motor operation - critical for validating timing-critical commutation logic.
ST7FMC1K2T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- ST7
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for ST7FMC1K2T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FMC1K2T6 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 reliable?
The price and inventory of ST7FMC1K2T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FMC1K2T6 is usually 5 days.
3.What payment methods are accepted for ST7FMC1K2T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FMC1K2T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FMC1K2T6?
ST7FMC1K2T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FMC1K2T6 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?
For technical support, including ST7FMC1K2T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FMC1K2T6 requirements.
6.How does Aetrix verify that ST7FMC1K2T6 is sourced from the original manufacturer or authorized distributors?
All ST7FMC1K2T6 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 meets industry standards.
7.What is the process for return or replacement of ST7FMC1K2T6?
All ST7FMC1K2T6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FMC1K2T6, 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 part is unused and in its original packaging.
Return procedure for ST7FMC1K2T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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