This page provides the complete Nucleo-F103RB Pinout diagrams for the STM32 Nucleo-F103RB development board. The Nucleo-F103RB is based on the STM32F103RBT6 microcontroller running at up to 72 MHz with 128KB flash and 20KB RAM. Diagrams include both Arduino and Morpho header pin assignments with alternate function labels.
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Search by pin name (e.g. PA9, PG14) or by function name (e.g. USART1_TX, TIM1_CH2), across all four header diagrams. Data is sourced from ST\’s official UM1724 Nucleo-64 User Manual and the STM32F103RB pin database.
Note: the function list shown for each pin is that pin\’s full MCU-level alternate-function capability — not every function listed is necessarily wired or labeled on this specific connector; the diagram\’s own green/colored tags show only what ST has actually broken out at that position.
Pinout Legend
Arduino Headers
Arduino Header (Top Left — CN6 / CN8)
Arduino Header (Top Right — CN5 / CN9)
Morpho Headers
Morpho Header (Top Left — CN7)
Morpho Header (Top Right — CN10)
