STM32F103R4T6A

This is an ARM-based 32-bit MCU belonging to the low-density performance line, featuring 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, and 6 communication interfaces. The product adopts an ARM 32-bit Cortex™-M3 CPU core with embedded Flash and SRAM, supporting NVIC, EXTI, and other functions.

Key features

• ARM 32-bit CortexTM-M3 CPU Core - 72 MHz maximum frequency, 1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access, Single-cycle multiplication and hardware division
• Memories - 16 or 32 Kbytes of Flash memory - 6 or 10 Kbytes of SRAM
• Clock, reset and supply management - 2.0 to 3.6 V application supply and I/Os - POR, PDR, and programmable voltage detector (PVD) - 4-to-16 MHz crystal oscillator - Internal 8 MHz factory-trimmed RC - Internal 40 kHz RC - PLL for CPU clock - 32 kHz oscillator for RTC with calibration
• Low power - Sleep, Stop and Standby modes - VBAT Supply for RTC and backup registers
• 2 x 12-bit, 1 μs A/D converters (up to 16 channels) - Conversion range: 0 to 3.6 V - Dual-sample and hold capability - Temperature sensor
• DMA - 7-channel DMA controller, Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs
• Up to 51 fast I/O ports - 26/37/51 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
• Debug mode Serial wire debug (SWD) & JTAG interfaces
• 6 timers: Two 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input; 16-bit, motor control PWM timer with deadtime generation and emergency stop; 2 watchdog timers (Independent and Window); SysTick timer 24-bit downcounter
• 6 communication interfaces: 1x I²C interface (SMBus/PMBus); 2x USARTs (ISO 7816 interface, LIN, IrDA capability, modem control); 1x SPI (18 Mbit/s); CAN interface (2.0B Active); USB 2.0 full-speed interface
• CRC calculation unit, 96-bit unique ID