FTDI’s FT234XD USB to Basic UART IC Becomes The Ideal Candidate for Small Frame Applications Like A Smart Watch
A wearable smartwatch is a sophisticated and compact electronic device that goes beyond the traditional role of timekeeping with features like fitness tracking and phone connectivity for notifications. It seamlessly integrates advanced technology into a sleek and portable design that can be worn on the wrist.
FTDI products can be integrated into the smartwatch to allow for:
• USB charging
• USB connectivity to phone or PC to allow for data download and synchronization to application software
• Firmware updates
• Configuration and more!
The example below uses FTDI’s FT234XD USB to Basic UART IC which have the following key features making it an ideal candidate for small frame applications like a smart watch:
• Single chip USB to asynchronous serial data transfer interface
• Entire USB protocol handled on the chip. No USB specific firmware programming required.
• Fully integrated 2048 byte EEPROM for customization
• Fully integrated clock generation with no external crystal required
• Data transfer rates up to 3Mbaud
• 512 bytes receive buffer and 512 bytes transmit buffer for high data throughput
• FTDI’s royalty-free drivers eliminate the requirement for USB driver development
• Battery Charger Detection which may be used by mobile devices to detect the presence of a charger on the USB port to enable higher current / faster charging of batteries
• Low operating current of 8mA (typical) and USB suspend current of 125uA (typical) current
• Extended operating temperature range: -40°C to 85°C
• Available in compact Pb-free 12 Pin DFN package (RoHS compliant)
The block diagram shows at a high level how FTDI’s FT234XD can be integrated into the smartwatch.
The USB port on the smartwatch is connected to a phone, PC or tablet. The smartwatch application software controls the FT234XD which is connected to a processor inside the smartwatch and communicates via UART protocol.
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All FT-X ICs
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