MAX3107_15 Datasheet, PDF (1/52 Pages) Maxim Integrated Products – SPI/I2C UART with 128-Word FIFOs

MAX3107
EVALUATION KIT AVAILABLE
SPI/I²C UART with 128-Word FIFOs
General Description
The MAX3107 is an advanced universal asynchronous
receiver-transmitter (UART) with 128 words each of
receive and transmit first-in/first-out (FIFO) that can be
controlled through I²C or high-speed SPI. The 2x and
4x rate modes allow a maximum of 24Mbps data rates.
A phase-locked loop (PLL), prescaler, and fractional
baud-rate generator allow for high-resolution baud-rate
programming and minimize the dependency of baud rate
on reference clock frequency.
Autosleep and shutdown modes help reduce power con-
sumption during periods of inactivity. A low 640µA (typ)
supply current and tiny 24-pin TQFN (3.5mm x 3.5mm)
package make the MAX3107 ideal for low-power portable
devices.
Integrated logic-level translation on the controller and
transceiver (RX/TX and RTS/CTS) interfaces enable use
with a wide selection of RS-232/RS-485 transceivers.
Automatic hardware and software flow control with select-
able FIFO interrupt triggering offloads low-level activity
from the host controller. Automatic half-duplex transceiver
control with programmable setup and hold times allow
the MAX3107 to be used in high-speed applications, for
example Profibus-DP.
The MAX3107 is ideal for use in portable devices,
industrial, and automotive applications. The MAX3107 is
available in a 24-pin SSOP package and a 24-pin TQFN
package. It is specified over the -40°C to +85°C extended
ambient temperature range.
Applications
●● Portable Devices
●● Industrial Control Systems
●● Fieldbus Networks
●● Automotive Infotainment Systems
●● Medical Systems
●● Point-of-Sale Systems
●● HVAC or Building Control
Benefits and Features
●● Bridges an SPI/MICROWIRE or I²C Microprocessor
Bus to an Asynchronous Interface Such as RS-485,
RS-232, or IrDA^SM
• SIR- and MIR-Compliant IrDA Encoder/Decoder
• Line Noise Indication Ensures Data Link Integrity
●● Saves Up to 23% Board Space
• 24-Pin TQFN (3.5mm x 3.5mm) and SSOP Packages
●● Integrated Internal Oscillator Eliminates the Need for
an External Oscillator and Reduces the BOM Cost
• Integrated PLL and Divider
●● Fast Data Rates Allow Maximum System Flexibility
Across Interface Standards
• 24Mbps (max) Data Rate
• Fractional Baud-Rate Generator
• SPI Up to 26MHz Clock Rate
●● Deep, 128-Word Buffer and Automated Control
Features Help Offload Activity on the Microcontroller
• Auto Transceiver Direction Control
• Half-Duplex Echo Suppression
• Auto RTS/CTS and XON/XOFF Flow Control
• 9-Bit Multidrop-Mode Data Filtering
-- Special Character Detection
-- GPIO-Based Character Detection
-- Four Flexible GPIOs
●● Power Management Control Features Minimize
Power Consumption for Portable Applications
• +2.35V to +3.6V Supply Range
-- Low 640μA (typ) Supply Current at 1Mbaud and
20MHz Clock
• Shutdown and Autosleep Modes
-- Low 20μA (typ) Shutdown Power
●● Logic-Level Translation on the Controller and
Transceiver Interfaces (Down to 1.7V) Ensure
System Compatibility
●● Register Compatible with MAX3108, MAX3109,
MAX14830
Functional Diagram and Ordering Information appear at
end of data sheet.
19-5014; Rev 7; 5/15