Overview
The STR755FR2T6 is a member of the STR750 family of 32-bit microcontrollers from STMicroelectronics. This microcontroller integrates the industry-standard ARM7TDMI® 32-bit RISC core, known for its high performance, very low power consumption, and dense code. The device features a comprehensive set of peripherals, including USB, CAN, and advanced motor control timers, making it suitable for a wide range of applications. It supports both 3.3V and 5V supply voltages and operates over an extended temperature range of -40 to +105°C.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM7TDMI-S 32-bit RISC CPU, 54 DMIPS @ 60 MHz |
| Flash Memory | Up to 256 KB (10k W/E cycles, retention 20 yrs @ 85°C) |
| Read-While-Write Flash | 16 KB (100k W/E cycles, retention 20 yrs @ 85°C) |
| SRAM | 16 KB embedded high-speed SRAM |
| Supply Voltage | 3.3V ±10% or 5V ±10% |
| Operating Temperature | -40 to +105°C |
| Communication Interfaces | 1 I2C, 3 HiSpeed UARTs, 2 SSP, 1 CAN, 1 USB full-speed 12 Mb/s |
| Timers | 16-bit watchdog timer, 16-bit timer for system timebase, 3 synchronizable timers, 16-bit 6-ch. synchronizable PWM timer |
| I/O Ports | Up to 72 GPIOs with High Sink capabilities |
| A/D Converter | 10-bit, 16/11 channels with programmable Scan Mode & FIFO |
| DMA Controller | 4-channel DMA controller with circular buffer management |
| Low Power Modes | SLOW, WFI, STOP, and STANDBY with backup registers |
Key Features
- Core and Performance: ARM7TDMI-S 32-bit RISC CPU with 54 DMIPS @ 60 MHz.
- Memory: Up to 256 KB Flash program memory, 16 KB Read-While-Write Flash for data, and 16 KB embedded high-speed SRAM.
- Communication Interfaces: 1 I2C interface, 3 HiSpeed UARTs with Modem/LIN capability, 2 SSP interfaces (SPI or SSI), 1 CAN interface (2.0B Active), and 1 USB full-speed 12 Mb/s interface.
- Timers and PWM: 16-bit watchdog timer, 16-bit timer for system timebase functions, 3 synchronizable timers, and a 16-bit 6-ch. synchronizable PWM timer.
- I/O Ports: Up to 72 GPIOs with High Sink capabilities and atomic bit SET and RES operations.
- A/D Converter: 10-bit, 16/11 channels with programmable Scan Mode & FIFO and programmable Analog Watchdog feature.
- DMA Controller: 4-channel DMA controller with circular buffer management supporting UART, SSP, Timers, and ADC.
- Low Power Modes: SLOW, WFI, STOP, and STANDBY with backup registers and real-time clock driven by low power internal RC or 32.768 kHz dedicated oscillator.
Applications
- Appliances and Motor Drives: Suitable for brushless motor drives and other appliance control systems.
- USB Peripherals and UPS: Ideal for USB peripherals, UPS systems, and alarm systems.
- Programmable Logic Controllers and Inverters: Used in programmable logic controllers, circuit breakers, and inverters.
- Medical and Portable Equipment: Applicable in medical devices and portable equipment due to its low power consumption and high performance.
Q & A
- What is the core architecture of the STR755FR2T6?
The STR755FR2T6 features an ARM7TDMI-S 32-bit RISC CPU.
- What are the available memory options for the STR755FR2T6?
It includes up to 256 KB Flash program memory, 16 KB Read-While-Write Flash for data, and 16 KB embedded high-speed SRAM.
- What communication interfaces are available on the STR755FR2T6?
The device includes 1 I2C interface, 3 HiSpeed UARTs, 2 SSP interfaces, 1 CAN interface, and 1 USB full-speed 12 Mb/s interface.
- What are the key timer features of the STR755FR2T6?
It includes a 16-bit watchdog timer, a 16-bit timer for system timebase functions, 3 synchronizable timers, and a 16-bit 6-ch. synchronizable PWM timer.
- How many I/O ports does the STR755FR2T6 have?
The device has up to 72 GPIOs with High Sink capabilities.
- What is the resolution and number of channels of the A/D converter?
The A/D converter is 10-bit with 16/11 channels and features programmable Scan Mode & FIFO.
- Does the STR755FR2T6 support low power modes?
Yes, it supports SLOW, WFI, STOP, and STANDBY low power modes with backup registers.
- What is the operating temperature range of the STR755FR2T6?
The device operates over a temperature range of -40 to +105°C.
- Can the STR755FR2T6 be used in motor control applications?
Yes, it is ideal for induction and brushless DC motor control due to its advanced motor control timer and PWM capabilities.
- What are the power supply options for the STR755FR2T6?
The device can be powered by either 3.3V or 5V supply voltages.
