Products > Integrated Circuits (ICs) > Interface ICs > PI7C9X1172BZHEX
  • PI7C9X1172BZHEX

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UART Interface IC I2C / SPI to 2- Ch UART Bridge

  • Package/Case :
  • 32-WFQFN
  • Product Categories :
  • UART Interface Ics
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 1990


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PI7C9X1172BZHEX Product Details

The PI7C9X1172BZHEX is a I²C-bus/SPI to a dual-channel high performance UART bridge controller. It offers data rates up to 33Mbps and guarantees low operating and sleeping current. The PI7C9X1172BZHEX also has up to 8 additional programmable general purpose I/O [GPIO] pins. The device comes in very small QFN32 and TSSOP28 packages, which makes it ideally suitable for cost efficient, handheld, battery operated applications. These UARTs provide a bridge for protocol conversion from I²C -bus or SPI to and RS-232/RS-485 and are fully bidirectional.The PI7C9X1172BZHEX supports SPI clock speeds up to 33 Mbps and IrDA SIR up to 1.152 Mbit/s. PI7C9X1172’s internal register set is backward-compatible with the widely used and widely popular 16C450 UART. The PI7C9X1172BZHEX also provides additional advanced features such as auto hardware and software flow control, automatic RS-485 support,support for fractional baud rates and software reset.This allows the software to reset the UART at any moment, independent of the hardware reset signal.


    • Dual channel full-duplex UART
    • Support I²C-bus or SPI interface
    • 64 bytes FIFO (transmitter and receiver)
    • Fully compatible with industry standard 16C450, 16C550
    • and 16C2550
    • Baud Rates up to 16Mbit/s in 4X sampling clock rate
    • Programmable character formatting:- 5-bit, 6-bit, 7-bit or 8-bit character- Even, odd, or no parity- 1, 1.5, or 2 stop bits
    • Programmable Receive and Transmit FIFO trigger levels
    • Special character detection
    • Internal Loopback mode
    • Line break generation and detection Flow control
    • Support hardware flow control using RTS/CTS
    • Support software flow control with programmable Xon /Xoff characters
    • Programmable single or double Xon/Xoff characters
    • Interface control
    • Automatic RS-485 slave address detection
    • RS-485 driver direction control via RTS signal
    • RS-485 driver direction control inversion
    • Built-in IrDA encoder and decoder interface
    • Supports IrDA SIR with speeds up to 115.2 kbit/s (optional 1.152Mbps)
    • Up to eight user programmable GPIO pins
    • Software resetOthers
    • Low standby current at 3.3 V
    • Wide operation voltage (1.8V, 2.5V or 3.3V)
    • Industrial temperature ranges -40 ˚C to 85 ˚C
    • Available in QFN32 and TSSOP28 packages
    • Crystal oscillator (up to 24MHz) or external clock
    • (up to 64MHz) input
    • I²C interface
    • Compliant with I²C-bus fast speed
    • Support slave mode only SPI interface
    • PI7C9X1172 supports 33 Mbit/s maximum SPI clock speed
    • Support SPI mode 0 (slave mode only)


  • Industrial computing
  • Automation
  • Factory process control
  • Mobile computing
  • Embedded applications
  • Battery operated devices
  • Networking

Technical Parameters

  • Protocol
  • I2C
  • Function
  • Bridge, I2C/SPI to UART
  • Interface
  • UART
  • Voltage Supply
  • 1.8V, 2.5V, 3.3V
  • Package / Case
  • 32-WFQFN Exposed Pad
  • Supplier Device Package
  • 32-TQFN (5x5)

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that PI7C9X1172BZHEX is the original manufacturer or agent of DIODES?
We have a professional business development department to strictly test and verify the qualifications of DIODES original manufacturers and agents. All DIODES suppliers must pass the qualification review before they can publish their PI7C9X1172BZHEX devices; we pay more attention to the channels and quality of PI7C9X1172BZHEX products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of PI7C9X1172BZHEX chips? Including DIODES original factory information, UART Interface Ics application, PI7C9X1172BZHEX pictures?
You can use Jotrin's intelligent search engine, or filter by UART - Universal Asynchronous Receiver _ Transmitter category, or find it through Diodes Inc Information page.
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PI7C9X1172BZHEX we delivered, we will accept the replacement or return of the PI7C9X1172BZHEX only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of PI7C9X1172BZHEX.
(3)The PI7C9X1172BZHEX is unused and only in the original unpacked packaging.
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Diodes Incorporated is a global supplier of low pin-count standard semiconductor products. These products have eight pins or less, and include small signal transistors, metal-oxide semiconductor field-effect transistors (MOSFETs), thyristor surge protection devices, transient voltage protection devi...

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