{ "family": "Core", "name": "W", "rev": "b", "tile_id": 8, "json_version": "0.31", "updated_at": "2026-03-30T04:19:35.991Z", "headline": "BLE-enabled 100MHz Cortex M33", "description": "The Core.W tile combines the powerful STM32WBA55 100-MHz 32-bit Cortex-M33 processor together with an integrated 2.4GHz antenna on double-size T48 (4.0 x 8.0 mm) SMD package. The tile provides a user-configurable combination of: SW debug & bootloading; 1MB flash & 128KB SRAM; wireless communications (BLE 5.4, Thread, Matter, Zigbee, proprietary); two FM+ (1MHz) I2C ports; two SPI ports; one USART; five 12-bit 2.5Msps ADC inputs (16-bit with oversampling); many timers; ten capacitive touch inputs; one serial-audio interface; IR output; and an on-board LED", "application_notes": [ { "sort": 0, "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 pads 22 (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": 1, "details": "For the best wireless performance, the antenna-end of the Tile (the end without any pads) should not have any copper traces or planes above or below it.", "heading": "Antenna Clearance", "image_url": "" }, { "sort": 2, "details": "The onboard LED is connected to PB12 in an active-high configuration.", "heading": "LED", "image_url": "" } ], "package": { "pads": 16, "type": "T48", "size_x": 4000, "size_y": 8000, "size_z": 0 }, "power": [ { "max": 3.6, "min": 1.8, "type": "system", "notes": "", "gnd_pad": [ "1" ], "function": "", "direction": "input", "is_required": true, "max_current": "", "positive_pad": [ "14" ] } ], "components": [ { "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32wba55hg.html", "part": "STM32WBA55HGF6", "datasheet": "https://mosaic-component-datasheets.s3.eu-north-1.amazonaws.com/8/ST_Microelectronics-STM32WBA55.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": "A0", "direction": "bidirectional", "is_default": true }, { "af": 6, "note": "", "type": "interface", "function": "SPI3.CLK", "direction": "" }, { "note": "", "type": "analog", "function": "ADC9", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.2N", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM3.3", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM3.ETR", "direction": "" }, { "af": 0, "note": "", "type": "timer", "function": "LPTIM1.IN1", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G2.IO2", "direction": "" } ] }, { "pad": "3", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": 0 }, "functions": [ { "note": "", "type": "digital", "function": "A5", "direction": "bidirectional", "is_default": true }, { "af": 6, "note": "", "type": "interface", "function": "SPI3.CS", "direction": "" }, { "note": "", "type": "analog", "function": "ADC4", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM2.1", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "LPTIM2.ETR", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "SAI1.D2", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G1.IO4", "direction": "" } ] }, { "pad": "4", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -800 }, "functions": [ { "note": "", "type": "digital", "function": "A6", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C3.CLK", "direction": "" }, { "note": "", "type": "analog", "function": "ADC3", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM2.4", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "SAI1.CK2", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "SAI1.MCLK_A", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G1.IO3", "direction": "" } ] }, { "pad": "5", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "A7", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C3.DAT", "direction": "" }, { "note": "", "type": "analog", "function": "ADC2", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM2.3", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "SAI1.SCK_A", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G1.IO2", "direction": "" } ] }, { "pad": "6", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -2400 }, "functions": [ { "note": "", "type": "digital", "function": "B8", "direction": "bidirectional", "is_default": true }, { "af": 6, "note": "", "type": "interface", "function": "SPI3.MOSI", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.1", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM3.ETR", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM16.1N", "direction": "" }, { "af": 0, "note": "", "type": "timer", "function": "LPTIM1.ETR", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.RX", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G2.IO4", "direction": "" } ] }, { "pad": "7", "geometry": { "size_x": 800, "size_y": 400, "center_x": -1600, "center_y": -3200 }, "functions": [ { "note": "", "type": "digital", "function": "B9", "direction": "bidirectional", "is_default": true }, { "af": 6, "note": "", "type": "interface", "function": "SPI3.MISO", "direction": "" }, { "note": "", "type": "analog", "function": "ADC10", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.3N", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "TIM3.4", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM16.1", "direction": "" }, { "af": 13, "note": "", "type": "timer", "function": "LPTIM2.IN1", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G2.IO3", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "IR_OUT", "direction": "" } ] }, { "pad": "8", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -3200 }, "functions": [ { "note": "", "type": "digital", "function": "A12", "direction": "bidirectional", "is_default": true }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.CS", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.2", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.TX", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G3.IO4", "direction": "" } ] }, { "pad": "9", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -2400 }, "functions": [ { "note": "", "type": "digital", "function": "B4", "direction": "bidirectional", "is_default": true }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.CLK", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.3", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM17.1", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "LPTIM2.IN2", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.RX", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "SAI1.MCLK_B", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G3.IO1", "direction": "" } ] }, { "pad": "10", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -1600 }, "functions": [ { "note": "", "type": "digital", "function": "A15", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C1.CLK", "direction": "" }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.MOSI", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.ETR", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "LPTIM1.2", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.RTS_DE", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM17.BKIN", "direction": "input" } ] }, { "pad": "11", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": -800 }, "functions": [ { "note": "", "type": "digital", "function": "B3", "direction": "bidirectional", "is_default": true }, { "af": 4, "note": "", "type": "interface", "function": "I2C1.DAT", "direction": "" }, { "af": 5, "note": "", "type": "interface", "function": "SPI1.MISO", "direction": "" }, { "af": 1, "note": "", "type": "timer", "function": "TIM1.4", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM17.1N", "direction": "" }, { "af": 2, "note": "", "type": "timer", "function": "LPTIM1.IN2", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.CK", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G3.IO2", "direction": "" } ] }, { "pad": "12", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 0 }, "functions": [ { "note": "", "type": "digital", "function": "A13", "direction": "bidirectional", "is_default": true }, { "af": 0, "note": "", "type": "system", "function": "SWDIO", "direction": "" }, { "af": 14, "note": "", "type": "timer", "function": "TIM17.BKIN", "direction": "" }, { "af": 9, "note": "", "type": "other", "function": "G3.IO3", "direction": "" } ] }, { "pad": "13", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 800 }, "functions": [ { "note": "", "type": "digital", "function": "A14", "direction": "bidirectional", "is_default": true }, { "af": 0, "note": "", "type": "system", "function": "SWCLK", "direction": "" }, { "af": 3, "note": "", "type": "interface", "function": "USART2.TX", "direction": "" } ] }, { "pad": "14", "geometry": { "size_x": 800, "size_y": 400, "center_x": 1600, "center_y": 1600 }, "functions": [ { "note": "1.6-3.6V", "type": "power", "function": "V+", "direction": "" } ] }, { "pad": "15", "geometry": { "size_x": 400, "size_y": 800, "center_x": 400, "center_y": 1600 }, "functions": [ { "note": "", "type": "system", "function": "BOOT0", "direction": "" }, { "note": "", "type": "digital", "function": "H3", "direction": "bidirectional" } ] }, { "pad": "16", "geometry": { "size_x": 400, "size_y": 800, "center_x": -400, "center_y": 1600 }, "functions": [ { "note": "", "type": "system", "function": "NRST", "direction": "" } ] } ], "interfaces": [ { "name": "I2C1", "type": "I2C", "parameters": { "modes": [ "master, slave" ], "addresses": [ { "address": "programmable" } ], "kernel_clk_mhz": 16, "max_clock_speed": "1MHz" }, "pad_assignments": [ { "pad": "10", "function": "I2C1.CLK", "is_required": true }, { "pad": "11", "function": "I2C1.DAT", "is_required": true } ] }, { "name": "I2C3", "type": "I2C", "parameters": { "modes": [ "master, slave" ], "addresses": [ { "address": "programmable" } ], "kernel_clk_mhz": 16, "max_clock_speed": "1MHz" }, "pad_assignments": [ { "pad": "4", "function": "I2C3.CLK", "is_required": true }, { "pad": "5", "function": "I2C3.DAT", "is_required": true } ] }, { "name": "SPI1", "type": "SPI", "parameters": { "modes": [ "master, slave" ] }, "pad_assignments": [ { "pad": "8", "function": "SPI1.CS" }, { "pad": "9", "function": "SPI1.CLK" }, { "pad": "10", "function": "SPI1.MOSI" }, { "pad": "11", "function": "SPI1.MISO" } ] }, { "name": "SPI3", "type": "SPI", "parameters": { "modes": [ "master, slave" ] }, "pad_assignments": [ { "pad": "2", "function": "SPI3.CLK" }, { "pad": "3", "function": "SPI3.CS" }, { "pad": "6", "function": "SPI3.MOSI" }, { "pad": "7", "function": "SPI3.MISO" } ] }, { "name": "USART2", "type": "USART", "parameters": { "modes": [] }, "pad_assignments": [ { "pad": "6", "function": "USART2.RX" }, { "pad": "8", "function": "USART2.TX" }, { "pad": "9", "function": "USART2.RX" }, { "pad": "10", "function": "USART2.RTS_DE" }, { "pad": "11", "function": "USART2.CK" }, { "pad": "13", "function": "USART2.TX" } ] }, { "name": "SAI1", "type": "SAI", "parameters": { "modes": [] }, "pad_assignments": [ { "pad": "3", "function": "SAI1.D2" }, { "pad": "4", "function": "SAI1.CK2" }, { "pad": "4", "function": "SAI1.MCLK_A" }, { "pad": "5", "function": "SAI1.SCK_A" }, { "pad": "9", "function": "SAI1.MCLK_B" } ] } ], "clock": { "default": "hsi16", "sources": [ { "type": "hsi16", "description": "16MHz internal RC", "frequency_mhz": 16 }, { "type": "hse", "description": "32MHz crystal (on-board)", "frequency_mhz": 32 } ], "configurations": [ { "name": "low", "source": "hsi16", "sysclk_mhz": 16 }, { "name": "default", "source": "hse", "sysclk_mhz": 32 }, { "pll": true, "name": "high", "source": "hse", "sysclk_mhz": 64 }, { "pll": true, "name": "max", "source": "hse", "sysclk_mhz": 100 } ] }, "bootloaders": [ "USART1", "I2C3", "SPI3" ] }