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CH9434 - 4-UART Chip

Datasheet Summary

Description

a decoupling capacitor if short-circuited with other VDD.

The capacitance value is recommended not to be less than 0.1uF.

Internal power supply of the chip, short-circuited with other VDD.

Features

  • Operating voltage: 3.3V.
  • Support communication baud rate setting, with the baud rate range of 1200-4000000bps.
  • UART has an independent FIFO buffer in each direction, sending 1536 bytes and receiving 2048 bytes.
  • Four fully independent UARTs, compatible with 16C550 and enhanced.
  • Support 5/6/7/8 data bits and 1/2 stop bits.
  • UARTs support odd, even, no parity, blank 0, mark 1 and other verification methods.
  • Support the commonly used MODEM communication signals.

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Datasheet preview – CH9434

Datasheet Details

Part number CH9434
Manufacturer ETC
File Size 192.25 KB
Description 4-UART Chip
Datasheet download datasheet CH9434 Datasheet
Additional preview pages of the CH9434 datasheet.

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Full PDF Text Transcription

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CH9434 Datasheet 1 http://wch.cn 4-UART Chip CH9434 Datasheet Version: 1A http://wch.cn 1. Overview CH9434 is a SPI to 4-UART transfer chip, which provides four full duplex nine-line UARTs, and is used to extend UART for MCU/embedded system. CH9434 includes four UARTs compatible with 16C550 and supports up to 4Mbps baud rate communication. It supports up to 25-channel GPIO and provides half-duplex transceiver automatic switch pin TNOW. MCU SCS# SCK SDI SDO INT# CH9434 RXD0/TXD0/CTS0/RTS0 DTR0/DSR0/DCD0/RI0/TNOW0 RXD1/TXD1/CTS1/RTS1 DTR1/DSR1/DCD1/RI1/TNOW1 RXD2/TXD2/CTS2/RTS2 DTR2/DSR2/DCD2/RI2/TNOW2 RXD3/TXD3/CTS3/RTS3 DTR3/DSR3/DCD3/RI3/TNOW3 UART0 UART1 UART2 UART3 2. Features ● Operating voltage: 3.
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