DINU ALEXANDRA - IOANA 332CC
- DIAGRAMA BLOC
se afla in Diagrama-bloc.png
- BILL OF MATERIALS (BOM)
Componenta : MCU Model : Nordic nRF52840 Cod JLC : C227306 Datasheet : https://infocenter.nordicsemi.com/pdf/nRF52840_PS_v1.7.pdf
Componenta : Charger Model : TI BQ25180 Cod JLC : C5162464 Datasheet : https://www.ti.com/lit/ds/symlink/bq25180.pdf
Componenta : Fuel Gauge Model : Maxim MAX17048 Cod JLC : C224357 Datasheet : https://datasheets.maximintegrated.com/en/ds/MAX17048-MAX17049.pdf
Componenta : Accelerometer Model : Bosch BMA421 Cod JLC : C281864 Datasheet : https://www.mouser.com/datasheet/2/783/bst-bma421-ds000-1509549.pdf
Componenta : Haptic Driver Model : TI DRV2605L Cod JLC : C137152 Datasheet : https://www.ti.com/lit/ds/symlink/drv2605l.pdf
Componenta : Regulator Model : Richtek RT6160 Cod JLC : C2892336 Datasheet : https://www.richtek.com/assets/product_pdf/RT6160A/DS6160A-02.pdf
- DESCRIERE FUNCTIONALITATE HARDWARE
[Sistemul de Putere]
- Incarcarea bateriei Li-Po se face prin BQ25180
- Monitorizare curent si temperatura integrata
- RT6160 stabilizeaza tensiunea la 3.3V
- Functionare posibila pana la ~2.8V baterie
[Senzori si Interfete]
-
MAX17048:
- Citire procent baterie prin I2C
- Fara rezistenta externa de masura
-
BMA421:
- Detectie miscare
- Step counting
- Tilt-to-wake
-
DRV2605L:
- Control motor vibratii (ERM/LRA)
- Efecte haptice integrate
-
E-Paper Display:
- Consum zero in stare statica
- Control prin SPI
- ALOCARE PINI nRF52840
USB D+ / D- | USB Data | USB-C (J5) | | Pini dedicati pentru comunicatia USB nativa
P0.06 | I2C SDA | Senzori / PMIC | | Magistrala date (BMA421, MAX17048, BQ25180)
P0.07 | I2C SCL | Senzori / PMIC | | Magistrala clock pentru comunicatia I2C
P0.02 | SPI SCK | E-Paper Display | | Semnal de ceas pentru magistrala SPI
P0.03 | SPI MOSI | E-Paper Display | | Transmisie date imagine catre ecran
P0.05 | SPI CS | E-Paper Display | | Chip Select - activeaza comunicarea cu ecranul
P0.15 | EPD DC | E-Paper Display | | Data/Command control pentru driverul de ecran
P0.16 | EPD RST | E-Paper Display | | Reset hardware pentru panoul E-Paper
P0.17 | EPD BUSY | E-Paper Display | | Feedback de la ecran (procesare imagine)
P0.12 | HAPTIC EN | DRV2605L | | Activare / Trigger pentru driverul haptic
P0.11 | PMIC INT | BQ25180 | | Intrerupere de la charger
P0.10 | ALERT | MAX17048 | | Alerta baterie (ex: nivel critic)
P0.08 | IMU INT1 | BMA421 | | Intrerupere accelerometru (tap/tilt)
P1.08 | IMU INT2 | BMA421 | | Intrerupere secundara (low power)
P1.06 | BUTTON | SW_UP | | Buton navigare sus
P1.04 | BUTTON | SW_DN | | Buton navigare jos
P0.18 | RESET | Debug Port | | Reset hardware extern
SWDIO | Debug Data | TC2030 (J2) | | Linie date programare
SWDCLK | Debug Clock | TC2030 (J2) | | Linie ceas programare
P0.00 / 0.01 | XL1 / XL2 | Cristal 32kHz | | Oscilator low power / RTC
XC1 / XC2 | HF Crystal | Cristal 32MHz | | Frecventa principala + BLE
VBUS | Power Sense | USB VBUS | | Detectie 5V USB
VDDH | High Voltage | 3.3V VCC | | Alimentare principala
- DESIGN LOG SI DECIZII
[Status: Finalizare Partiala]
-
Overlap Errors (#16):
- 65 erori acceptate
- Cauza: densitate mare aQFN + PCB 2 straturi
- Solutie viitoare: PCB 4 straturi
-
Airwires (#15):
- 16 conexiuni ramase
- Nu afecteaza functionarea de baza
- Evitare scurtcircuite in zone critice
-
Antena RF:
- Ground stitching aplicat
- Keep-out respectat sub antena
-
Vizualizare 3D:
- PCB validat mecanic (1.0mm grosime)
- Fara modele 3D componente
- FISIERE DE FABRICATIE
Folder: /Manufacturing
Contine:
- Gerber Files (pentru productie PCB)
- BOM (lista componente)
- Pick and Place (asamblare SMT)
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