arduino R7FA4M1AB3CFM UNO R4 Minima

AI context

Dense context for pasting into a model prompt — addresses, pinout, voltages, tolerances and the vendor's reference circuit.

PART: Arduino UNO R4 Minima, SKU ABX00080, a UNO-form-factor board built around the Renesas R7FA4M1AB3CFM#AA0 (Arm Cortex-M4 with FPU at 48 MHz, 256 kB flash, 32 kB SRAM, 8 kB data flash used as EEPROM, up to 14-bit ADC, up to 12-bit DAC, on-chip OPAMP, capacitive touch unit, USB 2.0 full-speed, CAN controller). No radio and no second MCU: the board is the RA4M1, the ISL854102FRZ buck converter, a 3.3 V regulator path from the MCU's own VCC_USB pin, the header set, ICSP, a SWD/JTAG header, a USB-C port, a DC jack and a reset button. Arduino rates it at 29.71 mA minimum, 33.39 mA typical and 36.98 mA maximum average consumption on USB-C running the shipped blink firmware.
PINOUT: Arduino numbers each header from 1, so no two connectors share a sequence here: JANALOG pads 1-14, JDIGITAL pads 1-18, ICSP pads 1-6 and an SWD/JTAG header with pads 1-10. This entry numbers JANALOG 1-14, JDIGITAL 15-32, ICSP J1 33-38 and the SWD/JTAG header J2 39-48, and every description names its connector and the vendor's own pad number, the same offset convention the Nano R4 entry uses. JANALOG 1-14: BOOT, IOREF, Reset, +3V3, +5V, GND, GND, VIN, A0, A1, A2, A3, A4, A5. JDIGITAL 1-18 in this entry's order (15-32): SCL, SDA, AREF, GND, D13/SCK, D12/CIPO, D11/COPI, D10/CS, D9, D8, D7, D6, D5/CANRX0, D4/CANTX0, D3, D2, D1/TX0, D0. The pinout poster prints the SCL and SDA pads as D19/SCL and D18/SDA, the same nets as A5 and A4.. I2C: one bus, 5 V, on A4 (SDA) and A5 (SCL) with the same two nets repeated on the digital header as SDA and SCL, and no I2C device on the board, so there are no addresses. The pinout poster warns that A4/A5 are the same pins as D18/SDA and D19/SCL and that only one peripheral can use them at a time.
SUPPLY: VIN takes 6 V minimum, 7.0 V typical, 24 V maximum from the VIN pad or the barrel jack, and the ISL854102FRZ buck converter drops it to 5 V; USB-C takes 4.8-5.5 V and about 4.7 V reaches the MCU after the Schottky drop. VDD, and therefore the logic level, is the 5 V rail; VAREF is the analog reference, brought out on AREF.
LOGIC LEVEL: the datasheet states the whole board runs at 5 V except the +3V3 pin, which draws from the RA4M1's VCC_USB pin rather than from the buck converter - it is a tap, not a supply rail. GPIO current is 8 mA per pin, and the full-pinout poster adds a 60 mA maximum overall for the MCU.
REFERENCE CIRCUIT: the datasheet publishes no I2C pull-up values, no decoupling values and no external-component circuit for this board, so none are recorded here; there is no level translator and no second MCU to wire around.
TRAPS: (1) The ICSP header is not an independent port - its CIPO, SCK and COPI pads are D12, D13 and D11, and the poster says so. (2) CAN is stated twice and inconsistently: the feature list says D4/D5, and the digital table agrees on the pad numbers but swaps the labels against their own descriptions (D5 is labelled CANRX0 and described as the transmitter, D4 is labelled CANTX0 and described as the receiver); an external transceiver is required either way. (3) The pad labelled D0/TX0 is described by the vendor as 'Serial 0 Receiver (RX)' - label and description disagree. (4) The 3.3 V pin cannot be treated as a general 3.3 V rail; it is the MCU's VCC_USB pin. (5) Double-tapping reset enters the bootloader if a sketch has locked the board out of USB.