Not recommended for new design
The BIM M111 to BIM M115 are members of Siemens instabus EIB BCU - family. They are especially designed as small modules for piggyback use and can be fitted directly into PCBs. The modules contain all functional parts of an EIB - BCU with the exception of the shift register for the serial synchronous interface. Additionally access to such microcontroller ports as Reset, PLMA, or Port A is possible. These ports are directly accessible by the user. Additional pins for the connection of an external programming button and a LED are available. For applications with the need of longer 'Bus Buffer Time' the BIM allows to connect an additional capacitance at bus voltage level. The BIM M113 based on the BCU 2.1 Systemsoftware provides more performance, more EEPROM, more RAM and is fully pin-compatible to the BIM M111
| BIM | Technology | Microcontroller | ROM | RAM | EEPROM | Temp. Range |
|---|---|---|---|---|---|---|
| M111 | BCU 1.0 | 68HC05B | 6Kbytes | 176 Bytes | 256 Bytes | -5…+45°C |
| M115 | BCU 1.0 | 68HC05B6 | 6Kbytes | 176 Bytes | 256 Bytes | 25…+70°C |
| M113 | BCU 2,1 | 68HC705BE12 | 12Kbytes | 512Bytes | 512Bytes | -5…+45°C |
