AN3139 datasheet(10/63 Pages) STMICROELECTRONICS

10 / 63 page

STM8L family compatibility

AN3139

10/63

Doc ID 16993 Rev 3

Note:

The RTC, ADC, DAC, DMA, WWDG, LCD, SPI2, USART2, USART3 and BootROM

peripherals are not available in STM8L10x devices.

SPI2, USART2 and USART3 are not available in low and medium density STM8L15x

devices.

The AES peripheral is available only in high density STM8L16x devices.

The AWU peripheral is not available in STM8L15x devices and is replaced by the RTC, so

this aspect can also be considered as an incompatibility.

The following functional blocks can be considered as compatible with only a few negligible

differences:

●

GPIO (I/O capabilities)

●

Interrupt management (interrupt vectors)

●

Power control (wakeup from low power mode)

●

I2C1 (true open drain)

●

SPI1

●

USART1

●

Internal memories (Flash, SRAM, EEPROM)

You can find more details about these blocks in Chapter 3: Block-by-block compatibility

analysis. You can also refer to Figure 1: STM8L family block diagram.

1.4

Blocks that are compatible with significant exceptions

A few peripherals have additional features or less important functionalities compared to the

same peripheral in another STM8L sub-family. For these particular peripherals you have to

adapt the software drivers and check all possible hardware dependencies.

The peripheral and functional blocks in the following list are compatible with significant

exceptions. The package pinout is high on the list as this aspect requires special attention:

●

Package pinout

●

CLK

●

COMP

●

ADC

●

DAC

●

LCD

●

RTC

You can find more details in Section 3: Block-by-block compatibility analysis. You can also

refer to Figure 1: STM8L family block diagram.

AN3139 Datasheet(PDF) 10 Page - STMicroelectronics

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