MAX14830 Datasheet, PDF (1/68 Pages) Maxim Integrated Products – Quad Serial UART with 128-Word FIFOs

EVALUATION KIT AVAILABLE
MAX14830
Quad Serial UART with 128-Word FIFOs
General Description
The MAX14830 is an advanced quad universal asyn-
chronous receiver-transmitter (UART), each UART hav-
ing 128 words of receive and transmit first-in/first-out
(FIFO) and a high-speed serial peripheral interface
(SPIK) 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
microcontrollers, FPGAs, and transceivers that are pow-
ered 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 transmit-
ters as well as clock generation on GPIOs.
The 128-word FIFOs have advanced FIFO control reduc-
ing 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 -40NC to +85NC temperature range.
Applications
Industrial Control Systems
Programmable Logic Controllers (PLC)
IO-Link Master Controllers
Automotive Infotainment Systems
Medical Systems
Point-of-Sales Systems
Airplane Communication Buses
Typical Operating Circuits appear at end of data sheet.
Features
S SPI Up to 26MHz Clock Rate
S Fast-Mode Plus (Fm+) I²C Interface Up to 1MHz
S 128-Word Transmit and Receive FIFOs Per UART
S 6Mbaud (max) Data Rate in 16x Sampling Mode
S 12/24Mbaud (max) Data Rate in 2x/4x Rate Modes
S Fractional Baud-Rate Generators, Predivider, and
Phase-Locked Loop (PLL)
S Transmitter Synchronization Through SPI
Commands
S Four Timers Routed to GPIOs
S Automatic Hardware Flow Control Using RTS_
and CTS_ Outputs and Inputs
S Automatic Software Flow Control (XON/XOFF)
S Auto Transceiver Direction Control
S Programmable Setup and Hold Times for
Transceiver Control
S Auto Transmitter Disable
S Half-Duplex Echo Suppression
S Special Character Detection
S 9-Bit Multidrop Mode Address Detection and
Filtering
S SIR- and MIR-Compliant IrDA^® Encoder/Decoders
S 16 Flexible GPIOs with 20mA Drive Capability
S +2.35V to +3.6V Supply Range
S Logic-Level Translation Down to 1.61V on
Controller and Transceiver Interfaces
S Small TQFN (7mm x 7mm) Package
Ordering Information
PART
MAX14830ETM+
TEMP RANGE
-40NC to +85NC
PIN-PACKAGE
48 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
SPI is a trademark of Motorola, Inc.
IrDA is a registered service mark of Infrared Data Association
Corporation.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5547; Rev 3; 1/13