Arduino / FRDM 2-Port UART Serial Shield - 64B FIFOs

Arduino / FRDM 2-Port UART Serial Shield - 64B FIFOs
Arduino / FRDM 2-Port UART Serial Shield - 64B FIFOs Arduino / FRDM 2-Port UART Serial Shield - 64B FIFOs
Brand: Berkshire Products, Inc.
Product Code: 2050
Availability: In Stock
Price: $69.95

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This shield has a SPI connected Dual UART (NXP SC16IS762) with 64 byte FIFOs on each channel. With FIFOs this large you are able to receive and send large packets of data. So large in fact that you may not need to use interrupts.

This board will mount on Ardiuno boards such the UNO or those with the same footprint. It will also mount on the new Freescale ARM based FRDM boards.

Note: It will not work with MEGA style Arduino boards since they do no have the SPI signals on IO pins 10-13. They only have them on the 6 pin (2x3) header on the middle of the board.

 

Dual UART Features

Dual full-duplex UART

  • 64 bytes FIFO (transmitter and receiver)
  • Fully compatible with industrial standard 16C450 and equivalent
  • Baud rates up to 230.4K with 3.6864 MHz crystal
  • Auto hardware flow control using RTS/CTS
  • Auto software flow control with programmable Xon/Xoff characters
  • Single or double Xon/Xoff characters
  • Up to eight programmable I/O pins – GPIO or MODEM control
  • Built-in IrDA encoder and decoder supporting IrDA SIR with speeds up to 115.2 kbit/s
  • Software reset
  • Transmitter and receiver can be enabled/disabled independent of each other
  • Receive and Transmit FIFO levels
  • Programmable special character detection
  • Fully programmable character formatting
  • 5-bit, 6-bit, 7-bit or 8-bit character
  • Even, odd, or no parity
  • 1, 11⁄2, or 2 stop bits
  • Line break generation and detection
  • Internal Loopback mode
  • Sleep current less than 30 µA at 3.3 V
  • 5 V tolerant inputs

 

UART Port Connections

The Port A UART can be used with an XBee module or it can be used as a TTL level UART. The Port B UART is wired for RS-232 levels only as DTE with a DB-9 Male connector. This is the same as a COM port on a PC. If you want to connect the shield to a PC you will need a Null MODEM cable. Please see the download link below for the manual. It has more information on connectivity.

 

XBee Radio Information

The board can be used with the following types of XBee & XBeePro radios in Series 1 & 2 footprints:

  • DigiMesh2 2.4G
  • DigiMesh2 900MHz
  • 802.15.4
  • 900MHz
  • 868MHz
  • Zigbee
  • WiFi

For best results we recommend that you use XBee radios with the RP-SMA antenna connector or the mini whip antenna. These will experience the least interference from the copper areas on the PCB. The XBee radios with chip and PCB antennas will still work but their range may be reduced.

The following links are for the board manual, the Arduino Libraries and Sample code, and a ZIP file with the Schematic and PCB layout files:

 

** NOTE **:  This board will not work with MEGA style Arduino boards since they do no have the SPI signals on IO pins 10-13. They only have them on the 6 pin (2x3) header on the middle of the board

 

Pictures Note: Some picture(s) show the IO Module with XBee radios attached for illustrative purposes only. XBee radios are not included and should be purchased from a vendor like Mouser or Digi-Key.

Note 1: XBee is a registered trademark of Digi International Inc.

Note 2: DigiMesh is a registered trademark of Digi International Inc.

                                                                         

Technical
Power +5V @ 60mA – minimum (without XBee module) ___ +15V maximum @ 500mA (w/XBee) ___ Do not Exceed +15V input
Environmental -30° to +65°C - Operating ___ -40° to +85°C - Storage ___ 5% to 95% Relative Humidity, non-Condensing
Ports 1. TTL 3.3V (5.0 tolerent input) UART with XBee capability ___ 2. RS-232 DTE UART

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