MAX3107 SPI/I2C UART，提供128字FIFO和内部振荡器

概述

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™. An internal oscillator reduces the need for an external crystal or clock source. 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 consumption 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 active-low RTS/CTS) interfaces enable use with a wide selection of RS-232/RS-485 transceivers.

Automatic hardware and software flow control with selectable 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 applications, 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.

关键特性

ny 24-Pin, Lead-Free TQFN (3.5mm x 3.5mm) and 24-Pin, Lead-Free SSOP Packages
Integrated Internal Oscillators
24Mbps (max) Data Rate
Integrated PLL and Divider
Fractional Baud-Rate Generator
SPI Up to 26MHz Clock Rate
Autotransceiver Direction Control
Half-Duplex Echo Suppression
Automatic Active-Low RTS/CTS and XON/XOFF Flow Control
Special Character Detection
GPIO-Based Character Detection
9-Bit Multidrop-Mode Data Filtering
SIR- and MIR-Compliant IrDA Encoder/Decoder
+2.35V to +3.6V Supply Range
Logic-Level Translation on the Controller and Transceiver Interfaces (Down to 1.7V)
Four Flexible GPIOs
Line Noise Indication
Shutdown and Autosleep Modes
Low 640µA (typ) Supply Current at 1Mbaud and 20MHz Clock
Low 20µA (typ) Shutdown Power

应用/使用

现场总线网络

HVAC或楼宇控制

工业控制系统

医疗系统

销售终端(POS)

便携式设备

功能框图