HT42B534-1 Datasheet, PDF (1/16 Pages) Holtek Semiconductor Inc – USB to UART Bridge IC

HT42B534-x
USB to UART Bridge IC
Features
• Operating Voltage (VDD): 3.3V~5.5V
• UART pin Voltage (VDDIO): 1.8V~VDD (Less than
VDD voltage)
• Power down and wake-up functions to reduce
power consumption
• Fully integrated 12MHz oscillator with 0.25%
accuracy for all USB modes which requires no
external components
• USB interface
♦♦ USB 2.0 Full Speed compatible
♦♦ Implements USB protocol composite device:
–– Communication Device Class (CDC) for
communications and configuration
–– Human Interface Device (HID) for user
configure USB VID, PID and device
description strings
♦♦ Internal 1.5kΩ pull-high resistor on D+ pin
• Fully-duplex Universal Asynchronous Receiver
and Transmitter Interface – UART
♦♦ Supports Baud Rate up to 3Mbps
♦♦ Supports maximum 128 bytes transmit buffer
and 128 bytes receive buffer
♦♦ UART Data formats supported:
–– Data bits: 8
–– Stop bits: 1 and 2
–– Parity: odd, even, no parity
♦♦ Supports RTS/CTS pins for auto flow control
♦♦ Supports RX pin resume signal to request a
remote wake-up
♦♦ Supports VDDIO pin for UART pins power
supply
• Supports standard Windows^® drivers for Virtual
Com Port (VCP): Windows XP (SP2), Vista,
Widows 7 & Windows 8 (only an INF file is
required), Windows 10
• Supports Android 4.0 or later version and Mac OS X
• Integrated 256 bytes true EEPROM for user memory
• Package types: 8-pin SOP, 10-pin SOP/MSOP,
16-pin NSOP
General Description
The HT42B534-x device is a high performance USB
to UART bridge controller with fully integrated
USB and UART interface functions, designed for
applications that communicate with various types
of UART. The device includes a USB 2.0 full
speed compatible interface which is used for PC
communication. The device also includes a fully
integrated high speed oscillator which is used as clock
source for the USB and UART baud rate generator.
The baud rate generator can support up to 3Mbps of
baud rate for the UART interface.
Rev. 1.00
1
December 09, 2016