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Block-by-block compatibility analysis

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3.1.1

Migration from one sub-family to another one

Migration between sub-families highlights the basic differences between their peripherals,

features and capabilities. When the pin-count remains unchanged, the peripheral I/Os often

stay on the same pins, but their properties can differ slightly (e.g. UART2 x UART1, ADC2 x

ADC1, I2C etc.).

Note:

In Table 3 to Table 15 the differences are shown in bold.

Refer to the migration checklist described in Chapter 2: Planning for migration and the next

sections for more details about all the differences mentioned here.

Table 3.

Migration between STM8S208 and STM8S207 80-pin or 64-pin packages

STM8S208M, 208R

STM8S207M, 207R

PG1 / CAN_RX

Not available

PG0 / CAN_TX

Not available

Table 4.

Migration between STM8S207 and STM8S105 48-pin or 44-pin packages

STM8S207C, 207S

STM8S105C, 105S

PA4 / UART1_RX

PD6 / UART3_RX

PD6 / UART2_RX

PA5 / UART1_TX

PD5 / UART3_TX

PD5 / UART2_TX

PA6 / UART1_CK

PC1 (HS) / TIM1_CH1 / UART2_CK

Table 5.

Migration between STM8S207 and STM8S105 32-pin packages

STM8S207K

STM8S105K

PD6 / UART3_RX

PD6 / UART2_RX

PD5 / UART3_TX

PD5 / UART2_TX

Not available

PC1 (HS) / TIM1_CH1 / UART2_CK