Fields In GPIOF_AFRL (0x40021800, 0x0020)

Field	Offset	Width	STM32L100	STM32L151	STM32L162
AFRL0	0	4	✘	✔	✔
AFRL1	4	4	✘	✔	✔
AFRL2	8	4	✘	✔	✔
AFRL3	12	4	✘	✔	✔
AFRL4	16	4	✘	✔	✔
AFRL5	20	4	✘	✔	✔
AFRL6	24	4	✘	✔	✔
AFRL7	28	4	✘	✔	✔