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Entry-Level Apple HomeKit-Ready Smart Lock

Overview

This Apple HomeKit®-ready smart lock system enables secure and convenient door access using Bluetooth®, NFC, and optional ultra-wideband (UWB) technology. Built to align with the HomeKit standard, the system includes all essential components for easy setup and seamless integration. Key commissioning is supported via Wi-Fi, allowing users to securely transfer digital "door keys" through Wi-Fi or NFC for flexible, controlled access.

System Benefits:

  • Apple HomeKit-ready smart lock can be opened via Bluetooth, NFC, Wi-Fi (for key commissioning), or optional UWB.
  • Replaceable primary batteries power the system.
  • Digital "door key" for access control can be securely transferred via Wi-Fi or NFC.
  • The system allows for optional precise hardware feedback on the door lock position.

Block Diagram

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Arrow.1305Connector Arrow.1306Connector Arrow.1307Battery 3-CellSheet.1309Sheet.1310Sheet.1311Sheet.1312Line 1pt.1552Line 1pt.1608Sheet.1315Sheet.1316Sheet.13173x AA Cell Primary Battery3x AA Cell Primary Battery3x AA Cell Primary BatteryConnected signals arrowConnected signals arrow.1330Bi-directional.1332Wake Up From NFCWake Up From NFCWake Up From NFCSheet.1336Transformer.324Line.841Line.842Sheet.1340Inductor.300Sheet.1342Sheet.1343Sheet.1344NFC CoilNFC CoilNFC CoilCrystalSheet.1353Sheet.1354Sheet.1355Sheet.1356Sheet.1357Sheet.1358Sheet.135927.12MHz27.12MHz27.12MHzTransformer Inductor Iron CoreLine.841Inductor Air Core.212Sheet.1517Sheet.1518Sheet.1519Sheet.1520Sheet.1521Sheet.1522Sheet.1523Sheet.1524Sheet.1525Line.292Apk2Apk2Apk 2Apk2Apk2ApkDoor OpenerDoor Opener DC Motor or SolenoidDoor Opener DC Motor or SolenoidConnector Line.153612V12V12V4Amax4Amax4AmaxConnector Line.1540Antenna.177Sheet.1542Sheet.1543Sheet.1544Sheet.1545Sheet.1546Boost EnableBoost EnableBoost EnableLoad 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Depletion MOSFET.60313Vmax13Vmax13VmaxConnected signals line.1687Connected signals line.1688Sheet.1735Bluetooth Low Energy MCUBluetooth Low Energy MCU M0+ & M33 CoreBluetooth Low Energy MCUM0+ & M33 CorePHYPHYPHYRFOsc.RFOsc.RFOsc.RTCRTCRTCSPISPISPII2CI2CI2CSCISCISCIADCADCADCADCADCADC GPIOGPIOGPIOQSPIQSPIQSPIIRQIRQIRQGPIOGPIOGPIOBlock.1726SCISCI IRQIRQIRQGPIOGPIOGPIO GPIOGPIOGPIOVDDVDDVDD1V81V81V8Sheet.1736Wi-FiWi-FiWi-Fi PHYPHYPHY RFOsc.RFOsc.RFOsc. RTCRTCRTC GPIOGPIOGPIO SCISCISCI VDDVDDVDDSheet.1737NFC ReaderNFC ReaderNFC ReaderSPISPISPI OscOscOsc IRQIRQIRQVDDIOVDDIOVDDIOVbatVbatVbatConnected signals lineConnector Line.1027

Load Switch

Load Switches

Load Switch

Load Switches

HVPAK

HVPAK
Application Note

Buck-Boost Regulator

Buck-boost Regulators (Integrated FETs)

NFC Reader

NFC

Bluetooth Low Energy MCU

Bluetooth Low Energy

Wi-Fi

Wi-Fi MCUs

Position Sensor

Inductive Position Sensors

Full-Bridge HVPAK

HVPAK

Flash

SPI NOR Flash

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