Compact IoT Hardware Design & Development
Publicada el 2026-07-27
Descripción de la oferta
── MCU ────────────────────────────────────────── MCU: R7FA8M1AHECFB (Cortex-M85 400MHz + Helium, LQFP144) ── WIRELESS ───────────────────────────────────── Cellular: BC660K-GL (NB-IoT LTE-M, UART AT) BLE/Thread: nRF5340-QKAA (BLE 5.3 + Thread, dual M33) WiFi6: nRF7002 (companion to nRF5340, SPI) ── SENSORS ────────────────────────────────────── Accel HF: IIS3DWB (26.7kHz ODR, SPI, 100Hz-6kHz) Accel LF: ADXL357 (DC-1.5kHz, SPI) Temp: STTS22H (I2C) Mic: SPH0641 (PDM, 80kHz BW) ── STORAGE ────────────────────────────────────── Flash: W25Q64JV (8MB NOR SPI) FRAM: FM25V10 (128KB SPI) ── POWER ──────────────────────────────────────── Charger: BQ25180 (Li-Ion 1A, I2C, power path) Fuel gauge: BQ27441 (I2C, coulomb counter) Buck 3V3: TPS62840 (VSYS→3.3V) Buck 1V8: TPS62840 (VSYS→1.8V) LDO RF: MIC5504-1.8 (clean 1.8V for RF) Watchdog: TPS3813 (hardware WDI) ── CONNECTIVITY & DEBUG ───────────────────────── USB-UART: CH340N (debug UART) USB ESD: USBLC6-2SC6 (USB-C protection) USB: USB-C 16P (USB 2.0) SIM: Infineon MFF2 (soldered M2M nano-SIM) ── ANTENNAS ───────────────────────────────────── LTE: Taoglas FXP73 (U.FL) WiFi/BLE: Taoglas FXP70 (U.FL) ── MISC ───────────────────────────────────────── LED: WS2812B-V5 (RGB addressable) Tacho: OH090U (Hall effect, JST 3-pin) Battery: JST XH 2.54mm (single LiPo) ── PCB ────────────────────────────────────────── Layers: 4–6L Size: ≤60×60mm Fab: PowerPCB
Skills
Fuente original: freelancer