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STMicroelectronics STR751FR0T6
- Part No.:
- STR751FR0T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STR751FR0T6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,153
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Product details
Overview
STR751FR0T6 from STMicroelectronics is a 32-bit ARM7TDMI-S™ microcontroller with 64 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 38 GPIOs in LQFP64 package. It operates at up to 60 MHz, supports dual supply (3.3V ±10% or 5V ±10%), and targets motor control, industrial communication gateways, and embedded USB-CAN bridge applications.
For engineers reviewing the STR751FR0T6 datasheet, STR751FR0T6 pinout, STR751FR0T6 application, or STR751FR0T6 equivalent, key selection criteria include its 16-bit synchronizable PWM timer with dead-time generation, 10-bit ADC (11-channel in 64-pin variant), nested interrupt controller (32 vectors, 16 IRQ priorities), and SMI interface for external serial Flash boot capability.
Technical Context
The STR751FR0T6 implements an ARM7TDMI-S core with 54 DMIPS @ 60 MHz, paired with a dedicated 4-channel DMA controller supporting UART0, SSP0, PWM, TIM0, and ADC transfers. Its clock system integrates an internal 5 MHz RC oscillator for fast startup, PLL-based AHB/USB/APB clock derivation (60 MHz AHB, 48 MHz USB, 32 MHz APB), and RTC driven by either 32.768 kHz crystal or calibrated low-power RC.
Peripheral integration includes three 16-bit synchronizable standard timers (TIM2:0) with input capture/output compare remapping, a 16-bit 6-channel motor-control PWM timer with edge/center-aligned waveforms and emergency stop, and dual SSP interfaces (SPI/SSI) operating up to 16 Mb/s (SSP0) - all accessible via atomic bit-set/reset I/O operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM7TDMI-S 32-bit RISC CPU, 54 DMIPS @ 60 MHz - enables real-time deterministic execution of industrial control firmware. |
| Flash Memory | 64 KB Bank 0 + 16 KB RWW Flash Bank 1 - supports in-field parameter updates without halting application code execution. |
| SRAM | 16 KB high-speed embedded SRAM - provides zero-wait-state data access for RTOS stacks and real-time buffers. |
| ADC | 10-bit, 11-channel, 3.75 µs min conversion time - suitable for fast current/voltage sampling in BLDC motor control loops. |
| CAN Interface | CAN 2.0B Active, up to 1 Mb/s, 32 message objects - enables robust fieldbus communication in automotive and industrial networks. |
| USB Interface | Full-Speed (12 Mb/s), software-configurable endpoints, 48 MHz clock from PLL - allows direct PC connectivity for firmware update and diagnostics. |
| I/O Count | 38 GPIOs with high sink capability and atomic bit SET/RES - simplifies safe peripheral control and avoids read-modify-write race conditions. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, rated for -40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO | Power supply inputs | Separate analog/digital/IO domains enable noise isolation for ADC and mixed-signal stability. |
| VSS, VSSA, VSSIO | Ground returns | Dedicated analog ground (VSSA) minimizes reference voltage drift during ADC conversions. |
| OSC_IN / OSC_OUT | Crystal oscillator interface | Supports 4 or 8 MHz ceramic resonator - feeds PLL for precise 60 MHz AHB and 48 MHz USB clocks. |
| PA0–PA15, PB0–PB15, PC0–PC7 | General-purpose I/O banks | 38 total GPIOs with remappable alternate functions - allows flexible PCB layout for timer, UART, and CAN signal routing. |
| CAN_RX / CAN_TX | CAN physical layer interface | Dedicated differential pair pins compliant with ISO 11898-2 - eliminates need for external transceiver logic-level translation. |
| USB_DP / USB_DM | USB Full-Speed differential pair | On-die termination and pull-up resistor - reduces BOM count and ensures USB 2.0 compliance without external components. |
Key Features
| Feature | Design Value |
|---|---|
| Read-While-Write Flash | 16 KB RWW memory allows live firmware parameter storage and over-the-air updates without halting main program flow. |
| Motor Control PWM Timer | 6-channel, 16-bit, with programmable dead-time insertion and center-aligned mode - directly drives 3-phase inverter gate drivers. |
| Nested Interrupt Controller | 32 vectors, 16 priority levels, <1 µs latency - guarantees deterministic response to CAN messages, ADC EOC, and PWM fault events. |
| Serial Memory Interface (SMI) | Direct boot and code execution from external serial Flash - enables scalable firmware storage beyond on-chip Flash limits. |
| Low-Power Modes | SLOW, WFI, STOP, STANDBY with RTC retention - achieves sub-10 µA standby current while preserving calendar time and wake-on-CAN capability. |
Applications
| Industrial Motor Drive | USB-to-CAN Bridge |
|---|---|
Use Scenario: Closed-loop control of brushless DC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, synchronized PWM generation, and current sensing via 10-bit ADC with DMA-triggered sampling. Use Value: Integrated 6-channel PWM with dead-time prevents shoot-through in 3-phase inverter bridges, eliminating external gate driver protection logic. |
Use Scenario: Protocol translation between PC-based diagnostic tools and CAN-based vehicle ECUs. IC Role / Device Role / Timing Role: USB device endpoint handler and CAN message scheduler with hardware FIFO buffering and timestamping. Use Value: Dual high-speed peripherals (USB 12 Mb/s + CAN 1 Mb/s) operate concurrently without CPU intervention via 4-channel DMA. |
| Programmable Logic Controller (PLC) I/O Module | Smart Power Inverter Gateway |
Use Scenario: Digital input/output expansion module with fieldbus interface in distributed control systems. IC Role / Device Role / Timing Role: Deterministic I/O scanning engine using TIM2 for input debouncing and WDG for system health monitoring. Use Value: 38 GPIOs with atomic bit-set/reset eliminate race conditions during multi-threaded I/O state updates in RTOS environments. |
Use Scenario: Solar inverter communication hub managing grid synchronization, safety shutdown, and remote telemetry. IC Role / Device Role / Timing Role: Real-time clock-calendar (RTC) with alarm wakeup, CAN-based grid status reporting, and USB firmware upgrade path. Use Value: STANDBY mode retains RTC time on V18_BKP while drawing <1 µA - enables accurate time-stamped event logging during extended grid outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM-based industrial microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103C8T6 | Cortex-M3 core, no CAN FD, no RWW Flash, 20 KB SRAM, no SMI interface | Lacks CAN 2.0B hardware filtering and external serial Flash boot - requires external SPI Flash for firmware updates. | Choose when migrating to Cortex-M ecosystem and CAN is handled externally or via software stack. |
| NXP LPC2368 | ARM7TDMI-S core, 512 KB Flash, no USB device, no RWW partition, 32 KB SRAM | Higher Flash density but lacks USB Full-Speed peripheral - unsuitable for PC-connected diagnostic tools. | Choose when USB connectivity is unnecessary and larger program memory is required for protocol stacks. |
Compared with STM32F103C8T6 and LPC2368, STR751FR0T6 uniquely combines CAN 2.0B, USB Full-Speed, and RWW Flash in a single 64-pin LQFP package - enabling compact, self-contained fieldbus-to-PC gateways without external memory or transceivers.
Availability
STR751FR0T6 is available at Aetrix Electronics and suitable for industrial motor drives, USB-CAN protocol analyzers, and smart power inverter gateways requiring stable component supply across extended temperature ranges (-40°C to +85°C).
Supply support for STR751FR0T6 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, sensors, and automotive ICs.
The STR750 family was designed for cost-sensitive industrial automation and motor control applications requiring dual-voltage operation (3.3V/5V), integrated CAN/USB, and robust real-time performance in extended temperature environments.
FAQ
Does STR751FR0T6 support both 3.3V and 5V operation?
Yes, STR751FR0T6 supports single-supply operation at either 3.3V ±10% or 5V ±10%. Internal voltage regulators generate VCORE (1.8V) and VBACKUP (1.8V) from either rail. However, USB functionality is only guaranteed under 3.3V operation due to electrical compliance requirements.
Can the 10-bit ADC be triggered by hardware events other than software?
Yes, the ADC start-of-conversion can be triggered by TIM0, TIM1, TIM2, or the PWM timer - enabling precise synchronous sampling aligned with motor phase commutation or PWM edges, critical for current reconstruction in FOC algorithms.
What is the maximum CAN bit rate supported, and how many message objects are available?
The integrated CAN controller complies with ISO 11898-1/2 and supports bit rates up to 1 Mb/s. It implements 32 message objects stored in on-chip RAM, each configurable for standard (11-bit) or extended (29-bit) identifier filtering and transmit/receive prioritization.
Is external memory required to use the Serial Memory Interface (SMI)?
No, SMI is optional. STR751FR0T6 boots from internal Flash by default. When enabled, SMI supports up to four external serial Flash devices (SPI NOR) for code execution or data storage - useful for firmware updates or configuration logs without reprogramming internal Flash.
STR751FR0T6 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:
- I2C, SPI, SSI, SSP, UART/USART, USB
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K 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:
STR751FR0T6 FAQ
1.How can I place an order for STR751FR0T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STR751FR0T6 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 STR751FR0T6 reliable?
The price and inventory of STR751FR0T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STR751FR0T6 is usually 5 days.
3.What payment methods are accepted for STR751FR0T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STR751FR0T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STR751FR0T6?
STR751FR0T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STR751FR0T6 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 STR751FR0T6?
For technical support, including STR751FR0T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STR751FR0T6 requirements.
6.How does Aetrix verify that STR751FR0T6 is sourced from the original manufacturer or authorized distributors?
All STR751FR0T6 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 STR751FR0T6 meets industry standards.
7.What is the process for return or replacement of STR751FR0T6?
All STR751FR0T6 units undergo pre-shipment inspection (PSI). If there is an issue with STR751FR0T6, 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 STR751FR0T6 part is unused and in its original packaging.
Return procedure for STR751FR0T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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