On page 34 of the STM32F030 datasheet there is a table of Alternate Functions that I think contains an error.
If you look at the GPIOA_AFR registers for port A and select column AF4 you will see that TIM14_CH1 is mentioned twice. The first time in connection with PA4 and the second time with PA7.
Either I do not quite understand how it works or the second instance of TIM14_CH1 should be in another column.
Besides that, why isn't this table in the Reference Manual (RM0360)?!
(btw. AF4 does connect TIM14_CH1 to PA4 )