STMicroelectronics STM32F405 Reference Manual page 290

General-purpose I/Os (GPIO) RM0090
Table 39. GPIO register map and reset values (continued)
Offset Register
GPIOx_AFRH
(where x = AFRH15[3:0] AFRH14[3:0] AFRH13[3:0] AFRH12[3:0] AFRH11[3:0] AFRH10[3:0] AFRH9[3:0] AFRH8[3:0]
0x24
A..I/J)
Reset value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Refer to Section: Memory map for the register boundary addresses.
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