MAX14830_15 Datasheet, PDF (1/68 Pages) Maxim Integrated Products – Quad Serial UART with 128-Word FIFOs

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 appears at end of data sheet.
Features
●● SPI Up to 26MHz Clock Rate
●● Fast-Mode Plus (Fm+) I²C Interface Up to 1MHz
●● 128-Word Transmit and Receive FIFOs Per UART
●● 6Mbaud (max) Data Rate in 16x Sampling Mode
●● 12/24Mbaud (max) Data Rate in 2x/4x Rate Modes
●● Fractional Baud-Rate Generators, Predivider, and
Phase-Locked Loop (PLL)
●● Transmitter Synchronization Through SPI Commands
●● Four Timers Routed to GPIOs
●● 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
●● Special Character Detection
●● 9-Bit Multidrop Mode Address Detection and Filtering
●● SIR- and MIR-Compliant IrDA^® Encoder/Decoders
●● 16 Flexible GPIOs with 20mA Drive Capability
●● +2.35V to +3.6V Supply Range
●● Logic-Level Translation Down to 1.61V on Controller
and Transceiver Interfaces
●● Small TQFN (7mm x 7mm) Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX14830ETM+ -40°C to +85°C
48 TQFN-EP*
+Denotes lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
IrDA is a registered service mark of Infrared Data Association
Corporation.
19-5547; Rev 5; 2/15