Description

UART-USB HID Keyboard module

UART to HID Keyboard module

CH9328 is a serial UART to HID keyboard chip that is identified as a standard USB HID keyboard device on computers.

Features:

Supports 12Mbps full-speed USB device interface, USB 2.0 compatible, built-in crystal oscillator.
Default serial communication baud rate is 9600bps, which supports multiple serial communication formats and common baud rate settings.
Supports 5V and 3.3V power supply voltages.
Supports configuration of VID, PID, and various USB string descriptors of the chip.
Supports configuration of default baud rate of the chip.
Complies with USB related specifications and HID device related specifications.
Multiple operating modes to apply to different requirements, can simulate full keyboard function.
RoHS compliant SOP16 lead-free package.

For CH9328 V1.4 and above, has integrated crystal oscillator, so X1, C1, C2 are not required and it is recommended to reserve location.

CH9328 datasheet

Key codes

USB Keyboard -Report format

Video :

Schematic and Layout

scheme

schema.png

Download Gerbers Download BOM(Bill of materials)

Jan 15,2025

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UART-USB HID Keyboard module

2 Layers PCB 16 x 40 mm FR-4, 1.6 mm, 1, HASL with lead, Black Solder Mask, White silkscreen

UART to HID Keyboard Chip CH9328. CH9328 is a serial UART to HID keyboard chip

2385

Published: Jan 15,2025

Standard PCB

Download Gerber file 6

BOM(Bill of materials)

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Only PCB

PCB+Assembly

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