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MAX14830 fiches techniques PDF

Maxim Integrated - Quad Serial UART

Numéro de référence MAX14830
Description Quad Serial UART
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX14830 fiche technique
MAX14830
EVALUATION KIT AVAILABLE
Quad Serial UART with 128-Word FIFOs
General Description
The MAX14830 is an advanced quad universal asynchro-
nous receiver-transmitter (UART), each UART having
128 words of receive and transmit first-in/first-out (FIFO)
and a high-speed serial peripheral interface (SPI) or I2C
controller interface. A PLL and fractional baud-rate
generators allow a high degree of flexibility in baud-rate
programming and reference clock selection.
Each of the four UARTs is selected by in-band SPI/I2C
addressing. Logic-level translation on the transceiver and
controller interfaces allows ease of interfacing to micro-
controllers, FPGAs, and transceivers that are powered by
differing supply voltages.
Extensive features simplify transceiver control in
half-duplex communication applications. The MAX14830
features the ability to synchronize the start of individual
UART’s transmission by SPI-based triggering. On-board
timers allow programming of delays between transmitters
as well as clock generation on GPIOs.
The 128-word FIFOs have advanced FIFO control
reducing host processor data flow management.
The MAX14830 is available in a 48-pin TQFN (7mm
x 7mm) package and is specified to operate. over the
extended -40°C to +85°C temperature range.
Applications
● Industrial Control Systems
● Programmable Logic Controllers (PLC)
● IO-Link Master Controllers
● Medical Systems
● Point-of-Sales Systems
● Airplane Communication Buses
Typical Operating Circuit and Ordering Information appear
at end of data sheet.
Benefits and Features
● Bridges an SPI/MICROWIRE or I2C Microprocessor
Bus to an Asynchronous Interface like RS-485,
RS-232, or IrDASM
• SIR- and MIR-Compliant IrDA Encoder/Decoder
• Line Noise Indication Ensures Data Link Integrity
● Deep, 128-Word Buffer and Automated Control
Features Help Offload Activity on the Microcontroller
• 128-Word Transmit and Receive FIFOs per UART
• Transmitter Synchronization Through SPI Commands
• Automatic Hardware Flow Control Using RTS_ and
CTS_ Outputs and Inputs
• Automatic Software Flow Control (XON/XOFF)
• Auto Transceiver Direction Control
• Programmable Setup and Hold Times for Transceiver
Control
• Auto Transmitter Disable
• Half-Duplex Echo Suppression
• 9-Bit Multidrop-Mode Data Filtering
Special Character Detection
GPIO-Based Character Detection
Four Timers Routed to GPIOs
16 Flexible GPIOs with 20mA Drive Capability
● Saves Board Space
• TQFN (7mm x 7mm) Package
● Fast Data Rates Allow Maximum System Flexibility
Across Interface Standards
• 6Mbaud (max) Data Rate in 16x Sampling Mode
• 12/24Mbaud (max) Data Rate in 2x/4x Rate Modes
• High-Resolution Programmable Baud-Rate
• SPI Up to 26MHz Clock Rate
• Fast Mode Plus (Pm+) I2C Up to 1MHz
● Integrated Internal Oscillator Eliminates the Need for
an External Oscillator and Reduces the BOM Cost
• Fractional Baud-Rate Generators, Predivider, and
Phase-Locked Loop (PLL)
• Logic-Level Translation Down to 1.61V on the Con-
troller and Transceiver Interfaces Ensures System
Compatibility
• Register Compatible with MAX3107, MAX3108,
MAX3109
IrDA is a registered service mark of Infrared Data Association
Corporation.
19-5547; Rev 7; 2/16

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