ST STMicroelectronics chip STM32F103RCT6 QFP-64 32-bit microcontroller

The meaning of STM32F103RCT6: Cortex-M3 basic MCU72MHz CPU, with 256KB FLASH, 48KB SRAM, LQFP64 package, temperature range -40 to 85.

Cortex-M3 is a 32-bit processor core. The internal data path is 32-bit, the register is 32-bit, and the memory interface is also 32-bit. CM3 adopts Harvard structure and has independent command bus and data bus, which can make instruction fetching and data access parallel. In this way, data access no longer occupies the instruction bus, and the instruction bus and the data bus share the same memory space.

STM32RCT6 detailed introduction :

Hardware resources: 48KB SRAM, 256KB FLASH, 2 basic timers, 4 general timers, 2 advanced timers, 2 DMA controllers (12 channels in total), 3 SPI, 2 IIC, 5 serial ports , 1 USB, 1 CAN, 3 12-bit ADCs, 1 12-bit DAC, 1 SDIO interface and 51 general-purpose IO ports. (51+5*2+3=64 51 IO ports, 5 pairs of power supplies, VBAT BOOT0 NRST)

Internal structure:

LSE: low-speed external clock signal (32.768KHz is generally used as RTC clock)

LSI: low-speed internal clock signal (40KHz)

HSI: high-speed internal clock signal (8MHz)

HSE: high-speed external clock signal (4-16MHz)

external The external clock signal source is a crystal oscillator (because of the large size, it is not integrated, but the accuracy is high)

internal internal clock signal source RC circuit (poor accuracy, inside the chip)

Note: HCLK maximum 72MHz PCLK1 maximum 36MHz PCLK2 maximum 72MHz

Detailed description:

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