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STMicroelectronics STR752FR1T6
- Part No.:
- STR752FR1T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STR752FR1T6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
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Product details
Overview
STR752FR1T6 from STMicroelectronics is an ARM7TDMI-S™ 32-bit microcontroller with 256 KB Flash (Bank 0), 16 KB RWW Flash (Bank 1), 16 KB SRAM, integrated CAN 2.0B interface, USB Full-Speed (12 Mb/s), and a 6-channel motor-control PWM timer. It operates at up to 60 MHz, supports dual supply (3.3V ±10% or 5V ±10%), and targets industrial motor control and embedded communication systems.
For engineers reviewing the STR752FR1T6 datasheet, STR752FR1T6 pinout, STR752FR1T6 application, or STR752FR1T6 equivalent, key selection considerations include its 64-pin LQFP package, 11-channel 10-bit ADC (3.75 µs min conversion), nested interrupt controller (32 vectors, 16 IRQ priorities), and dual-voltage operation enabling legacy 5V system integration without level-shifting.
Technical Context
The STR752FR1T6 integrates an ARM7TDMI-S core with tightly coupled peripherals including a dedicated motor-control PWM timer featuring dead-time generation, edge/center-aligned waveforms, and emergency stop - all synchronized with three standard 16-bit timers via Timer Link. Its SMI interface enables booting directly from external serial Flash (up to 64 MB across four banks).
It implements a dual-power architecture: internal 1.8V VCORE regulation from single 3.3V or 5V supply, plus independent VBACKUP for RTC retention; low-power modes (STOP, STANDBY) retain register/SRAM state or preserve only RTC using V18_BKP, with wake-up via 13 dedicated lines or RTC alarm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM7TDMI-S 32-bit RISC CPU delivering 54 DMIPS @ 60 MHz - enables real-time deterministic execution for motor control loops and protocol stacks. |
| Flash Memory | 256 KB Bank 0 + 16 KB RWW Bank 1 (100k W/E cycles, 20-yr data retention @ 85°C) - supports firmware updates and parameter storage without halting application. |
| ADC | 10-bit, 11-channel (LQFP64), 3.75 µs min conversion time - sufficient for fast current sensing in BLDC motor commutation. |
| CAN Interface | CAN 2.0B Active compliant, up to 1 Mb/s bit rate, 32-message object RAM buffer - suitable for automotive body networks and industrial fieldbus nodes. |
| USB Interface | Full-Speed (12 Mb/s) device-only peripheral with 8 configurable endpoints and suspend/resume - enables HID, CDC, or DFU-class connectivity without external PHY. |
| Operating Voltage | 3.3V ±10% or 5V ±10% - allows direct interfacing with legacy 5V logic and sensors while maintaining USB functionality under 3.3V. |
| Temperature Range | –40°C to +85°C ambient - validated for industrial control cabinets and motor drive enclosures without forced cooling. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 38 GPIOs (including high-sink capability), 13 wake-up lines, and dedicated pins for CANH/CANL, USB_DP/USB_DM, and PWM output channels (CH1–CH6).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PB0–PB7 | GPIO / TIM2_CH1 / I2C_SCL | Shared functions enable flexible timer remapping and I²C bus routing on compact PCB layouts. |
| PA0–PA7 | GPIO / TIM0_CH1 / UART1_TX / ADC_IN0–7 | Combines motor timing, serial comms, and analog input - critical for sensor-fused closed-loop control. |
| PC0–PC7 | GPIO / PWM_CH1–CH6 / CAN_RX / CAN_TX | Dedicated PWM outputs and CAN transceiver pins co-located for minimal trace length and EMI reduction. |
| PD0–PD7 | GPIO / USB_DP / USB_DM / SSP0_SCK / SSP0_MOSI | USB differential pair routed adjacent with controlled impedance; SSP0 signals support SPI-based flash or display interfaces. |
| VDD/VSS | Power / Ground | Multiple VDD/VSS pairs ensure stable core and I/O rail decoupling; thermal pad improves thermal resistance by >30%. |
Key Features
| Feature | Design Value |
|---|---|
| Motor-Control PWM Timer | 16-bit, 6-channel, dead-time insertion, edge/center-aligned modulation - eliminates external gate-driver timing compensation in 3-phase inverter designs. |
| Serial Memory Interface (SMI) | Direct boot and code execution from up to 64 MB external serial Flash - removes need for external parallel memory and simplifies BOM. |
| Nested Interrupt Controller | 32 vectors, 16 priority levels, <1 µs latency - guarantees timely response to CAN message arrival, ADC EOC, or PWM fault events. |
| Low-Power Modes | SLOW, WFI, STOP, STANDBY with RTC retention on V18_BKP - enables battery-backed monitoring during mains outage in UPS and alarm systems. |
| Flash Protection | Readout and write protection per bank - prevents unauthorized firmware extraction or accidental overwriting of calibration data. |
Applications
| Brushless DC Motor Drive | Industrial CAN Node |
|---|---|
|
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and power tools. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, generation of synchronized 6-channel PWM with dead-time, and current sensing via 11-channel ADC. Use Value: Eliminates need for external PWM generator or DSP; 3.75 µs ADC conversion enables >10 kHz current loop bandwidth. |
Use Scenario: Fieldbus node in programmable logic controllers for distributed I/O monitoring and actuator control. IC Role / Device Role / Timing Role: CAN message handling (32-object buffer), timestamping, and local decision-making using 16 KB SRAM for cyclic data buffering. Use Value: Reduces host MCU load; CAN 2.0B compliance ensures interoperability with existing J1939 and CANopen networks. |
| USB Human Interface Device | Smart Power Supply Monitor |
|
Use Scenario: Firmware-upgradable USB HID device for lab equipment configuration and status reporting. IC Role / Device Role / Timing Role: USB Full-Speed device endpoint management, descriptor handling, and UART-to-USB bridging for debug console access. Use Value: No external USB PHY required; 8 configurable endpoints support composite device class (e.g., HID + CDC simultaneously). |
Use Scenario: Real-time voltage/current monitoring and fault logging in uninterruptible power supplies (UPS). IC Role / Device Role / Timing Role: Simultaneous sampling of AC line voltage, battery voltage, and load current via ADC; RTC-stamped event logging to RWW Flash. Use Value: 16 KB RWW Flash retains 10+ years of fault logs at 85°C; STOP mode draws <10 µA while preserving SRAM for fast wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM-based microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103C8T6 | Cortex-M3 core, no CAN FD, 64 KB Flash, no RWW Flash, no SMI interface | Lacks CAN 2.0B hardware buffer and external serial Flash boot - requires external memory for firmware updates. | Choose when cost sensitivity outweighs CAN message throughput and field-upgrade flexibility. |
| NXP LPC2368 | ARM7TDMI-S core, 512 KB Flash, no USB device, no motor-control PWM, 100-pin LQFP only | No integrated USB or dedicated PWM timer - necessitates external USB PHY and gate driver ICs. | Choose when larger Flash and Ethernet MAC are required, and board space permits 100-pin package. |
Compared with STM32F103C8T6 and LPC2368, STR752FR1T6 uniquely combines CAN 2.0B with USB Full-Speed and motor-control PWM in a 64-pin LQFP, enabling compact, dual-interface industrial nodes without external support ICs.
Availability
STR752FR1T6 is available at Aetrix Electronics and suitable for brushless motor drives, industrial CAN nodes, USB HID devices, and smart power supply monitors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STR752FR1T6 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, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components.
The STR750 family was engineered for industrial motor control and embedded communication applications, integrating CAN, USB, and advanced PWM in a single-chip solution targeting appliance, UPS, and PLC markets.
FAQ
Does STR752FR1T6 support USB host functionality?
No. STR752FR1T6 implements only USB Full-Speed device-mode peripheral (12 Mb/s), with software-configurable endpoints and suspend/resume. It lacks USB OTG or host controller logic, and cannot enumerate as a USB host or connect to USB peripherals like keyboards or storage.
Can STR752FR1T6 operate from a 5V supply while using USB?
No. USB operation requires VDD in 3.3V ±10%; applying 5V disables USB functionality per datasheet specification. The device remains fully operational for CAN, PWM, ADC, and other peripherals, but USB_DP/DM pins must be left unconnected or disabled in firmware.
What is the maximum ADC sampling rate achievable with DMA?
With DMA and continuous scan mode, the 10-bit ADC achieves up to 267 kSPS (3.75 µs minimum conversion time). This assumes single-channel scanning; multi-channel scan rates decrease linearly with channel count due to fixed conversion overhead per channel.
Is the STR752FR1T6 pin-compatible with other STR75x devices in LQFP64?
Yes. All STR75x devices in LQFP64 (e.g., STR751FR1, STR752FR0/FR1/FR2) share identical pinouts and electrical characteristics. Differences are limited to Flash/RAM size and peripheral enablement - allowing hardware reuse across variants with firmware-only adaptation.
STR752FR1T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STR7
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 32-Bit Single-Core
- Speed:
- 60MHz
- Connectivity:
- CANbus, I2C, SPI, SSI, SSP, UART/USART
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 11x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STR752FR1T6 FAQ
1.How can I place an order for STR752FR1T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STR752FR1T6 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 STR752FR1T6 reliable?
The price and inventory of STR752FR1T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STR752FR1T6 is usually 5 days.
3.What payment methods are accepted for STR752FR1T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STR752FR1T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STR752FR1T6?
STR752FR1T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STR752FR1T6 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 STR752FR1T6?
For technical support, including STR752FR1T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STR752FR1T6 requirements.
6.How does Aetrix verify that STR752FR1T6 is sourced from the original manufacturer or authorized distributors?
All STR752FR1T6 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 STR752FR1T6 meets industry standards.
7.What is the process for return or replacement of STR752FR1T6?
All STR752FR1T6 units undergo pre-shipment inspection (PSI). If there is an issue with STR752FR1T6, 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 STR752FR1T6 part is unused and in its original packaging.
Return procedure for STR752FR1T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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