STM32F103CBU6TR datasheet(19/96 Pages) STMICROELECTRONICS

19 / 96 page

STM32F103x8, STM32F103xB

Description

Doc ID 13587 Rev 12

19/96

SysTick timer

This timer is dedicated for OS, but could also be used as a standard downcounter. It

features:

●

A 24-bit downcounter

●

Autoreload capability

●

Maskable system interrupt generation when the counter reaches 0

●

Programmable clock source

2.3.16

I²C bus

Up to two I²C bus interfaces can operate in multimaster and slave modes. They can support

standard and fast modes.

They support dual slave addressing (7-bit only) and both 7/10-bit addressing in master

mode. A hardware CRC generation/verification is embedded.

They can be served by DMA and they support SM Bus 2.0/PM Bus.

2.3.17

Universal synchronous/asynchronous receiver transmitter (USART)

One of the USART interfaces is able to communicate at speeds of up to 4.5 Mbit/s. The

other available interfaces communicate at up to 2.25 Mbit/s. They provide hardware

management of the CTS and RTS signals, IrDA SIR ENDEC support, are ISO 7816

compliant and have LIN Master/Slave capability.

All USART interfaces can be served by the DMA controller.

2.3.18

Serial peripheral interface (SPI)

Up to two SPIs are able to communicate up to 18 Mbits/s in slave and master modes in full-

duplex and simplex communication modes. The 3-bit prescaler gives 8 master mode

frequencies and the frame is configurable to 8 bits or 16 bits. The hardware CRC

generation/verification supports basic SD Card/MMC modes.

Both SPIs can be served by the DMA controller.

2.3.19

Controller area network (CAN)

The CAN is compliant with specifications 2.0A and B (active) with a bit rate up to 1 Mbit/s. It

can receive and transmit standard frames with 11-bit identifiers as well as extended frames

with 29-bit identifiers. It has three transmit mailboxes, two receive FIFOs with 3 stages and

14 scalable filter banks.

2.3.20

Universal serial bus (USB)

The STM32F103xx performance line embeds a USB device peripheral compatible with the

USB full-speed 12 Mbs. The USB interface implements a full-speed (12 Mbit/s) function

interface. It has software-configurable endpoint setting and suspend/resume support. The

dedicated 48 MHz clock is generated from the internal main PLL (the clock source must use

a HSE crystal oscillator).

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