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www.diodes.com

April 2019

Diodes Incorporated

PI7C9X752

Document Number DS40312 Rev 3-2

Features

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1.62V to 3.6V with 5V Tolerant Serial Inputs

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Programmable Sleep Mode with automatic wake-up

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Intel or Motorola Data Bus Interface select

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Each UART is independently controlled with:

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16C550 Compatible Register Set

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64-byte Transmit and Receive FIFOs

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Transmit and Receive FIFO Level Counters

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Programmable TX and RX FIFO Trigger Levels for

DMA and Interrupt Generation

→ Programmable Receive FIFO Trigger Levels for

Software/Hardware Flow Control

→ Programmable hysteresis(Table A-D) for Software/

Hardware Flow Control

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Automatic RTS/CTS Flow Control

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Automatic Xon/Xoff Software Flow Control with

Optional Data Flow Resume by Xon Any Character

→ DMA Signaling Capability for both Received and

Transmitted Data

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RS485 HDX Control Output

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RS485 auto address detection

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Infrared (IrDA 1.0/1.1) Data Encoder/Decoder

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Programmable Data Rate with Prescaler

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Up to 16 Mbps Serial Data Rate with 64MHz external clock

input

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Crystal oscillator(up to 24MHz) or external clock(up to

80MHz) input

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Built in Power-On-Reset circuit

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Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

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Halogen and Antimony Free. “Green” Device (Note 3)

Description

The PI7C9X752 (752), is a 1.62V to 3.6V dual Universal Asyn-

chronous Receiver and Transmitter (UART) with 5V tolerant se-

rial (modem) inputs. The highly integrated device is designed for

high bandwidth requirement in communication systems. Each

UART has its own 16C550 compatible set of configuration regis-

ters, TX and RX FIFOs of 64 bytes, fully programmable transmit

and receive FIFO trigger levels, TX and RX FIFO level counters,

automatic RTS/CTS hardware flow control with programmable

hysteresis, automatic software (Xon/Xoff) flow control, RS-485

half-duplex direction control, Intel or Motorola bus interface and

sleep mode for power saving.

Application

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Remote Access Servers

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Ethernet Network to Serial Ports

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Network Management

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Factory Automation and Process Control

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Point-of-Sale Systems

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Multi-port RS-232/RS-422/RS-485 Cards

A product Line of

Diodes Incorporated

PI7C9X752

High Performance 1.62V To 3.6V Dual Uart with 64-Byte FIFO

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Lead-free Green

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm

antimony compounds.