{ "family": "Core", "name": "H.1", "rev": "a", "tile_id": 11, "json_version": "0.32", "updated_at": "2026-03-21T16:58:48.000Z", "headline": "250MHz Cortex-M33", "description": "The Core.H.1 is built around the high-performance STM32H523 250-MHz 32-bit Cortex-M33 processor into a single T44 tile, providing a user-configurable combination of multiple communication interfaces (USB 2.0 full-speed, I2C/I3C, SPI, FDCAN, and UART), along with two 12-bit 5-Msps ADC inputs, one DAC output, and multiple timers.", "application_notes": [ { "sort": 0, "details": "To utilize the USB 2.0 Full-Speed (12Mbit/s) port, the supply voltage needs to be at least 3.0V. The Core.H.1 can serve as either a peripheral or a host.", "heading": "USB 2.0 Full-Speed Port", "image_url": "" }, { "sort": 1, "details": "Similar to the Core.U tiles, when the chip is blank, it will default into the bootloader when connected over USB. Once there is code in the program space, you need to hold the BOOT0 pin low during reset (either power-on or via the NRST pin) to enter the bootloader.", "heading": "USB Bootloading", "image_url": "" }, { "sort": 2, "details": "The single-wire debug port is available on pads 13 (SWCLK) and 14 (SWDIO). While not absolutely required, it is often helpful to have the ability to hold pad 12 (NRST) low when connecting to the debugger. You can likely also use BOOT0 to help the debugger connect.", "heading": "Single-Wire Debug & Bootloading", "image_url": "" }, { "sort": 3, "details": "The onboard LED is connected to PA15 in an active-high configuration.", "heading": "LED", "image_url": "" } ], "package": { "pads": 14, "type": "T44", "size_x": 4000, "size_y": 4000, "size_z": 0 }, "power": [ { "max": 3.6, "min": 1.71, "type": "system", "notes": "note that a voltage of at least 3.0V is required for USB communications", "gnd_pad": [ "1" ], "function": "", "direction": "input", "is_required": true, "max_current": "", "positive_pad": [ "10" ] } ], "components": [ { "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32h523he.html", "part": "STM32H523HE", "datasheet": "https://mosaic-component-datasheets.s3.eu-north-1.amazonaws.com/11/ST_Microelectronics-STM32H523HE.pdf", "manufacturer": "ST Microelectronics" } ], "pads": [ { "pad": "1", "geometry": { "size_x": 1000, "size_y": 400, "center_x": -1500, "center_y": 1600 }, "functions": [ { "note": "", "type": "power", "function": "GND", "direction": "input" } ] }, { "pad": "2", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": 800 }, "functions": [ { "note": "", "type": "digital", "function": "A8", "direction": "bidirectional", "is_default": true }, { "af": 10, "note": "", "type": "interface", "function": "USB.SOF", "direction": "" }, { "af": 4, "note": "", "type": "interface", "function": "I2C3.CLK", "direction": "" }, { "af": 9, "note": "", "type": "interface", "function": "I3C2.CLK", "direction": "" }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.RDY", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.1", "direction": "" }, { "af": 3, "note": "", "type": "timer", "function": "TIM8.BKIN2", "direction": "" } ] }, { "pad": "3", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": 0 }, "functions": [ { "note": "", "type": "digital", "function": "B4", "direction": "bidirectional", "is_default": true }, { "af": 9, "note": "", "type": "interface", "function": "I2C3.DAT", "direction": "" }, { "af": 10, "note": "", "type": "interface", "function": "I3C2.DAT", "direction": "" }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.MISO", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM3.1", "direction": "" }, { "af": 4, "note": "", "type": "timer", "function": "LPTIM1.2", "direction": "" } ] }, { "pad": "4", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -800 }, "functions": [ { "note": "", "type": "digital", "function": "B8", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C1.CLK", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "I3C1.CLK", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM4.3", "direction": "" }, { "af": 8, "note": "", "type": "interface", "function": "UART4.RX", "direction": "" }, { "af": 9, "note": "", "type": "interface", "function": "FDCAN1.RX", "direction": "" } ] }, { "pad": "5", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "B7", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C1.DAT", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "I3C1.DAT", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM4.2", "direction": "" }, { "af": 9, "note": "", "type": "interface", "function": "FDCAN1.TX", "direction": "" } ] }, { "pad": "6", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "A12", "direction": "bidirectional", "is_default": true }, { "af": 10, "note": "", "type": "interface", "function": "USB.DP", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.ETR", "direction": "" }, { "af": 6, "note": "", "type": "interface", "function": "UART4.TX", "direction": "" }, { "af": 9, "note": "", "type": "interface", "function": "FDCAN1.TX", "direction": "" } ] }, { "pad": "7", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -800 }, "functions": [ { "note": "", "type": "digital", "function": "A11", "direction": "bidirectional", "is_default": true }, { "af": 10, "note": "", "type": "interface", "function": "USB.DM", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.4", "direction": "" }, { "af": 6, "note": "", "type": "interface", "function": "UART4.RX", "direction": "" }, { "af": 9, "note": "", "type": "interface", "function": "FDCAN1.RX", "direction": "" } ] }, { "pad": "8", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 0 }, "functions": [ { "note": "", "type": "digital", "function": "A7", "direction": "bidirectional", "is_default": true }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.MOSI", "direction": "" }, { "note": "", "type": "analog", "function": "ADC7+", "direction": "" }, { "note": "", "type": "analog", "function": "ADC3-", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.1N", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM3.2", "direction": "" }, { "af": 3, "note": "", "type": "timer", "function": "TIM8.1N", "direction": "" } ] }, { "pad": "9", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 800 }, "functions": [ { "note": "", "type": "digital", "function": "A5", "direction": "bidirectional", "is_default": true }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.CLK", "direction": "" }, { "note": "", "type": "analog", "function": "ADC19+", "direction": "" }, { "note": "", "type": "analog", "function": "ADC18-", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM2.1", "direction": "" }, { "af": 3, "note": "", "type": "timer", "function": "TIM8.1N", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM2.ETR", "direction": "" }, { "note": "", "type": "other", "function": "DAC1.OUT", "direction": "" } ] }, { "pad": "10", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 1600 }, "functions": [ { "note": "", "type": "power", "function": "V+", "direction": "input" } ] }, { "pad": "11", "geometry": { "size_x": 400, "size_y": 800, "center_x": 400, "center_y": 1600 }, "functions": [ { "note": "", "type": "system", "function": "BOOT0", "direction": "" } ] }, { "pad": "12", "geometry": { "size_x": 400, "size_y": 800, "center_x": -400, "center_y": 1600 }, "functions": [ { "note": "", "type": "system", "function": "NRST", "direction": "" } ] }, { "pad": "13", "geometry": { "size_x": 400, "size_y": 800, "center_x": -400, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "A14", "direction": "bidirectional", "is_default": true }, { "af": 0, "note": "", "type": "system", "function": "SWCLK", "direction": "" } ] }, { "pad": "14", "geometry": { "size_x": 400, "size_y": 800, "center_x": 400, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "A13", "direction": "bidirectional", "is_default": true }, { "af": 0, "note": "", "type": "system", "function": "SWDIO", "direction": "" } ] } ], "interfaces": [ { "name": "I2C1", "type": "I2C", "parameters": { "modes": [ "master, slave" ], "addresses": [ { "address": "programmable" } ] }, "pad_assignments": [ { "pad": "4", "function": "I2C1.CLK", "is_required": true }, { "pad": "5", "function": "I2C1.DAT", "is_required": true } ] }, { "name": "I2C3", "type": "I2C", "parameters": { "modes": [ "master, slave" ], "addresses": [ { "address": "programmable" } ] }, "pad_assignments": [ { "pad": "2", "function": "I2C3.CLK", "is_required": true }, { "pad": "3", "function": "I2C3.DAT", "is_required": true } ] }, { "name": "SPI1", "type": "SPI", "parameters": { "modes": [ "master" ], "max_clock_speed": "45MHz" }, "pad_assignments": [ { "pad": "2", "function": "SPI1.RDY" }, { "pad": "3", "function": "SPI1.MISO", "is_required": true }, { "pad": "8", "function": "SPI1.MOSI", "is_required": true }, { "pad": "9", "function": "SPI1.CLK", "is_required": true } ] }, { "name": "UART4", "type": "UART", "parameters": { "modes": [] }, "pad_assignments": [ { "pad": "4", "function": "UART4.RX" }, { "pad": "6", "function": "UART4.TX" }, { "pad": "7", "function": "UART4.RX" } ] }, { "name": "FDCAN1", "type": "FD CAN", "parameters": { "modes": [] }, "pad_assignments": [ { "pad": "4", "function": "FDCAN1.RX" }, { "pad": "5", "function": "FDCAN1.TX" }, { "pad": "6", "function": "FDCAN1.TX" }, { "pad": "7", "function": "FDCAN1.RX" } ] }, { "name": "USB", "type": "USB", "parameters": { "modes": [] }, "pad_assignments": [ { "pad": "6", "function": "USB.DP", "is_required": true }, { "pad": "7", "function": "USB.DM", "is_required": true }, { "pad": "2", "function": "USB.SOF" } ] }, { "name": "I3C2", "type": "I3C", "parameters": { "modes": [ "master, slave" ] }, "pad_assignments": [ { "pad": "2", "function": "I3C2.CLK", "is_required": true }, { "pad": "3", "function": "I3C2.DAT", "is_required": true } ] }, { "name": "I3C1", "type": "I3C", "parameters": { "modes": [ "master, slave" ], "address_bits": [] }, "pad_assignments": [ { "pad": "4", "function": "I3C1.CLK", "is_required": true }, { "pad": "5", "function": "I3C1.DAT", "is_required": true } ] } ], "clock": { "default": "hsi", "sources": [ { "type": "hsi", "description": "64MHz internal RC oscillator", "frequency_mhz": 64 }, { "type": "csi", "description": "4MHz low-power internal RC", "frequency_mhz": 4 } ], "configurations": [ { "name": "low", "source": "csi", "sysclk_mhz": 4 }, { "name": "default", "source": "hsi", "sysclk_mhz": 64 }, { "pll": true, "name": "high", "note": "64÷4×16÷2, VCO=256", "source": "hsi", "sysclk_mhz": 128 }, { "pll": true, "name": "max", "note": "64÷8×62÷2, VCO=496", "source": "hsi", "sysclk_mhz": 248 } ] }, "bootloaders": [ "USB_DFU", "USART1", "USART2", "USART3", "I2C1", "I2C2", "SPI1", "SPI2", "FDCAN1" ] }