Datasheet

STM32F103xx Description
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Advanced control timer (TIM1)
The advanced control timer (TIM1) can be seen as a three-phase PWM multiplexed on 6
channels. It can also be seen as a complete general-purpose timer. The 4 independent
channels can be used for
● Input Capture
● Output Compare
● PWM generation (edge or center-aligned modes)
● One Pulse Mode output
● Complementary PWM outputs with programmable inserted dead-times.
If configured as a standard 16-bit timer, it has the same features as the TIMx timer. If
configured as the 16-bit PWM generator, it has full modulation capability (0-100%).
The counter can be frozen in debug mode.
Many features are shared with those of the standard TIM timers which have the same
architecture. The advanced control timer can therefore work together with the TIM timers via
the Timer Link feature for synchronization or event chaining.
I²C bus
Up to two I²C bus interfaces can operate in multi-master 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.
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.
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 from 8-bit to 16-bit. The hardware CRC
generation/verification supports basic SD Card/MMC modes.
Both SPIs can be served by the DMA controller.
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.