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M77N - Mezzanine Card with 4 UARTs
 

M-Module

The M77N is an M-Module supporting 4 high-performance UARTs with RS232 or RS422/485. It is designed for industrial automation, medical computers, in-vehicle computers, and embedded computers in transportation.

Download data sheet

  • M77N Product ImageM77N Quad RS232/RS422/RS485 UART
  • M77N Product Image

Main Features

  • 4 high-performance UARTs
  • Compatible to 16550 UART
  • 128 bytes FIFO buffer
  • Serial data rates up to 2 Mbit/s
  • Software programmable 
  • Full and half duplex on 4 channels
  • 500 V AC optical isolation
  • -40°C to +85°C (qualified components)
M77N Product Image

Technical Data

UART
  • Four independent full-duplex asynchronous high-performance UART channels
  • Four isolated groups, optical isolation
  • 128-byte FIFO for each transmitter and receiver
  • UARTs fully software compatible with industry standard 16C55x type UARTs
  • Data rates up to 2 Mbit/s
  • Automated in-band flow control using programmable Xon/Xoff characters, in both directions
  • 5-, 6-, 7-, 8- and 9-bits data framing
  • Independent channel reset by software
  • Transmitter and receiver can be disabled
Front Interfaces
UART
  • Four interfaces on one 25-pin D-Sub connector
  • Software-configurable as RS232/RS422/RS485
Onboard Interfaces
  • UART
    • Four interfaces on one 24-pin I/O connector
  • M-Module Bus
    • One 40-pin M-Module bus connector
Mezzanine Module Standard
  • Compliant with M-Module standard ANSI/VITA 12-1997 (S2012)
  • A08, D08, INTA, IDENT
Electrical Specifications
  • Supply voltage
    • +5 V (-3%/+5%)
  • Power consumption
    • 4.5 W max.
  • Isolation voltage
    • 500 V AC
Mechanical Specifications
  • Dimensions: conforming to M-Module standard
  • Weight
    • 78 g (model 04M077N00)
Environmental Specifications
  • Temperature range (operation)
    • -40°C to +85°C (qualified components), compliant with EN 50155, class TX
  • Temperature range (storage): -40°C to +85°C
  • Cooling concept
    • Air-cooled, airflow 1.0 m/s min.
  • Humidity
    • EN 60068-2-30
    • EN 50155
  • Altitude: -300 m to +3000 m
  • Shock: EN 50155 (12.2.11)
  • Vibration: EN 50155 (12.2.11)
Reliability
MTBF: 1 360 992 h @ 40°C according to IEC/TR 62380 (RDF 2000)
Safety
  • Electrical Safety
    • EN 62368-1 (former EN 60950-1) class II equipment
  • Flammability (PCBs)
    • UL 94 V-0
EMC
  • EN 55022 class B (emission)
  • EN 50121-3-2 class B (emission)
  • EN 55024 class A (immunity)
  • EN 50121-3-2 class A (immunity)
Software Support
  • Linux
  • VxWorks
  • QNX
  • OS-9
  • For more information on supported operating system versions and drivers see Software.

Ordering Information

Standard M77N Models
04M077N00

4 channels RS232/RS485/RS422, optically isolated UART, -40°C to +85°C (qualified components)

Miscellaneous Accessories
05M000-00
05M000-00

M-Module cable, 2 m, with 25-pin D-Sub plug/housing to pig tail

05M000-17
05M000-17

25 mounting screw sets to fix M-Modules on carrier boards (3 different screw types, 50 pieces each)

Software

Linux
13M077-90

Linux TTY driver (MEN) for UART M-Modules, source code

VxWorks
13M077-60

VxWorks driver (MEN) for UART M-Modules, source code

QNX
13M077-40

QNX native driver (MEN) for UART M-Modules

OS-9
13M077-01

OS-9/68k SCF driver for UART M-Modules

13M077-02

OS-9/PPC SCF driver for (MEN) UART M-Modules, source code

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