AN2945

Peripherals

Doc ID 15468

9/18

Table 4 lists the common peripherals, highlighting the coherency between products at

register, bit and feature level.

Although the timers seem different with many distinct configurations, their architecture

across and within the product families is the same. There are only variations of a single

timer architecture. From the superset, sub-blocks can optionally be stripped to decrease the

number of capture/compare channels or remove options necessary only for a few specific

applications such as motor control.

Table 4.

Peripherals shared between STM8 and STM32 devices

Peripheral names

STM32

STM8

Independent watchdog (IWDG)

Window watchdog (WWDG)

Serial peripheral interface (SPI)

Universal synchronous/asynchronous receiver/transmitter (USART)

Advanced-control timers

16-bit advanced-control timer

General-purpose timer

16-bit general-purpose timers

Basic timer

8-bit basic timer