1ª 10155 ES 9 - 2009
37
15.6 keyboard control board
The keyboard control board, with Flash technology, is located in the panel keyboard assembly; it
controls the proximity keyboard boards.
Its principle technical characteristics are:
• Uses a microcontroller made by Motorola MC9S08AC60 (8 bits) with 2 Kbytes of
internal RAM memory.
• Works at 40 MHz.
• Uses 5 Vdc.
• The programme memory that the machine has is Flash type with capacity of 60
Kbytes. The access to memory is in 8 bits.
• The software is always loaded from the control flash board.
JP1: port of communication to electronics
JP2: auxiliary port of communication
JP3: connection loom refund
JP4: connection loom infrared
JP6: connection to control flash board
JP7: connection to keyboard board from 1
to 4
JP8: connection to keyboard board from 5
to 8
JP9: connection to programming handset
JP10: connection green and white LEDs
JP11: future use
JP12: connection information display.
JP13: power supply board (+5V. +12V.
GND)
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