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CH432Q The WCH CH432Q is a dual UART chip offering high-speed communication up to 4Mbps. It features independent UARTs compatible with 16C550 standards and supports various data formats and parity options.
Mfr Part #:

CH432Q

Available from 1 distributors
Mfr Name: WCH
WCH
The WCH CH432Q is a dual UART chip offering high-speed communication up to 4Mbps. It features independent UARTs compatible with 16C550 standards and supports various data formats and parity options.
✓ Total Stock: 5,670 pcs
$ Price Range: $0.30

CH432Q Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
5,670 pcs
On Request
5670 pcs On Request 1 On Request On Request 21+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

CH432Q Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Duplex
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CH432Q Description

Short technical summary and product information.

The WCH CH432Q is a versatile dual UART chip designed for extending serial port capabilities in MCU and embedded systems. It provides two fully independent UARTs, compatible with 16C450, 16C550, and 16C552 standards, supporting data bits from 5 to 8, and 1 or 2 stop bits. Parity options include odd, even, mark, space, and none.

 

This chip supports programmable baud rates up to 4Mbps, with a built-in 16-byte FIFO buffer and four trigger levels for efficient data handling. It features hardware flow control with automatic handshake and transmission rate control, compatible with TL16C550C. The CH432Q also includes serial port frame error detection and break line interval detection.

 

Communication modes include full-duplex and half-duplex, with support for RS485 transceiving automatic switch. An integrated SIR infrared Codec enables IrDA infrared communication at baud rates from 2,400bps to 115,200bps. The chip operates with a supply voltage of 3.3V or 5V and includes a low-power sleep mode.

 

Two MCU interface options are available: an 8-bit passive parallel interface operating at 10MB/s and an SPI serial interface operating at 3MB/s (24MHz). The CH432Q is available in QFP-44 and SSOP-20 lead-free packages, compatible with RoHS standards.

CH432Q Quick Information

Product Type: Dual UART Chip
Canonical Name: CH432Q Dual UART Chip
Subcategory: Dual UART

CH432Q Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

CH432Q Estimated Pricing

Qty Low High
1+ $0.30 $0.30

Estimated market price range - modelled values for guidance only, not live distributor offers.

CH432Q Features

  • Dual independent UARTs with 16C550 compatibility.
  • Supports baud rates up to 4Mbps.
  • Built-in 16-byte FIFO buffer.
  • Selectable 8-bit parallel or SPI interfaces.
  • Available in QFP-44 and SSOP-20 packages.

CH432Q Applications

  • RS232 serial port extension.
  • High-speed serial communication.
  • RS485 communication systems.
  • IrDA infrared communication.

CH432Q FAQs

6 frequently asked questions generated from this part’s specifications.
What UART standards does the CH432Q support?

The CH432Q supports UART compatibility with 16C450, 16C550, and 16C552.

What are the supported data bits for the CH432Q?

The device supports data bits 5, 6, 7, and 8.

What package options are available for the CH432Q?

The CH432Q is available in QFP-44 and SSOP-20 packages.

What is the operating voltage range for the CH432Q?

The device operates at 3.3V to 5V.

Does the CH432Q support infrared communication?

Yes, it has built-in IrDA infrared Codec support.

What is the FIFO buffer size in the CH432Q?

The FIFO buffer size is 16 bytes.

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