Details

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BUY CH315H https://www.utsource.net/itm/p/8378066.html

Parameter	Description
Part Number	CH315H
Type	USB to UART Bridge Controller
Interface	USB 2.0 Full Speed
UART Interface	TTL Level (3.3V or 5V)
Operating Voltage	3.0V to 5.5V
Operating Current	< 80mA (Typical)
Baud Rate	Up to 921600 bps
Flow Control	Hardware and Software Flow Control Supported
Operating Temp.	-40°C to +85°C
Package Type	QFN-24, SSOP-24
Pin Count	24

Instructions for Use:

1. Power Supply:

   • Connect the VCC pin to a power supply within the operating voltage range (3.0V to 5.5V).
   • Ensure the GND pin is connected to the system ground.

2. USB Connection:

   • Connect the D+ and D- pins to the USB data lines.
   • The device will enumerate as a USB CDC device when connected to a host.

3. UART Configuration:

   • Configure the UART settings (baud rate, parity, stop bits) via software.
   • Connect TXD and RXD pins to the corresponding UART interface of the microcontroller or other devices.

4. Flow Control:

   • For hardware flow control, connect RTS and CTS pins appropriately.
   • For software flow control, use XON/XOFF protocol in your application software.

5. Firmware Update:

   • Firmware can be updated using a dedicated tool provided by the manufacturer.
   • Follow the manufacturer’s guidelines for firmware updates to ensure compatibility and stability.

6. Installation Notes:

   • Place decoupling capacitors close to the VCC and GND pins to minimize noise.
   • Ensure proper PCB layout with attention to signal integrity and EMC considerations.

For detailed specifications and advanced configurations, refer to the official datasheet provided by the manufacturer.

(For reference only)