FCALLBOX3 Display Box 

CPU BOARD 18F4550 FOR FCALLBOX3 Display 5x7

DESCRIPTION

The CPU 18F4550 board is the control board of the dsiplay.

It assumes the features following :

- Control the eight digits.

- Control the serial link in TTL (not RS232) which comes from the remote control (here the FCALLBOX3 remote display box).

SCHEMATIC

The board has a PIC 18F4550 from Microchip, note that the USB interface is not used here.

Download here the schematic in PDF format

BILL OF MATERIAL

- The bill of material below shows only the components to be placed.

Top view Ref Description Fabricant / référence C10 Capacitor 470nF 16V X7R 10% 0603 All brands C14 Capacitor through hole pitch 3.5mm 330uF 16V 20% All brands U15 Integrated circuit 18F4550 TQFP 44 Microchip / PIC18F4550-I/PT U16 Xtal 24MHz 30/30/40/12pF CMS 5x7 mm EUROQUARTZ / 1640921 or equivalent C1,C3 Capacitor 100nF 16V X7R 10% 0603 All brands

Bottom view Ref Description Manufacturer / Reference R56,R57 Resistor 1KR 5% 0603 All brands C13 Capacitor 10uF 16V X7R 0805 All brands C11-C12 Capacitor 100nF 16V X7R 0603 All brands C8,C9 Capacitor 22pF 50V COG 0603 All brands J1 Socket PCB 1 raw 6 way MULTICOMP /2212S-06SG-85 or equivalent

PCB

- The board which has 100x35mm dimensions is a part of the PCB F00103 with 100x100mm dimensions.

- So, you need to cut it to get the PCB of the Display board.

Download the manufacturer files here

ASSEMBLY

The board has components on the two faces, note that J1 takes place on the bottom

Download the views here in PDF format     

Copyright François Callanquin, October 2013

Contact : fcallbox@free.fr