M77 (MEN MIKRO)

The M77 is based on the M-Module ANSI mezzanine standard. It can be used as an I/O extension in any type of bus system, i.e. CPCI, PXI, VME or on any type of stand-alone SBC. Appropriate M-Module carrier cards in 3U, 6U and other formats are available from MEN or other manufacturers. The M77 is a quad serial interface M-Module which supports four high-performance UARTs with RS232/423 or RS422/485 level at the front-panel D-Sub connector or at the rear I/O connector of the M-Module. The 16C954 UARTs are fully software compatible with 16C550 UARTs. The interface mode of the M77 can be changed by means of software. The termination resistor for RS422/485 must be set up through an external connection in the cable. All interface lines are optically isolated from the system and from each other, which is essential for advanced automotive and industrial applications. The M77 is equipped with an M-Module-ID EEPROM.