Computertechnik mit Mikrocontrollern

KAPITEL 13. AUFBAU DES SYSTEMS 141
1:270 resistor :1/4W 270
2:2k2 resistor :1/4W 2k2
2: 68 resistor :1/4W 68
2: 22pF capacitor :Kerko 22p
1:100nF capacitor :Z5U-2,5 100n
1: 10uF capacitor :AX 10/35
1: 10uF capacitor :RAD 10/35
1:12Mhz quartz :12-HC49U-S
1: red led 2mA :LED 3mm 2MA rt
1:green led 2mA :LED 3mm 2MA gr
1:BAT43 schottky diode:BAT 43
1:ATmega48-20PU :ATMEGA48-20 DIP
1:jumper SCK :LU 2,5 MS2
1:plug :WSL 10W
1:USB-B-plug :USB BW
Die Montageanleitung:
( ) PCB:board 43mm x 71mm :saw
( ) B1 :bridge :solder (h15) (i14)
( ) B2 :bridge :solder (a22) (e22)
( ) B3 :bridge :solder (d13) (d11)
( ) B4 :bridge :solder (k19) (k22)
( ) B5 :bridge :solder (h19) (h22)
( ) B6 :bridge :solder (j7) (l7)
( ) B7 :isolated bridge :solder if needed (h8) (i21)
( ) R1 :10k resistor :solder (b8) (f8)
( ) R2 :1k5 resistor :solder (a6) (e6)
( ) R3 :270 resistor :solder (b10) (f10)
( ) R4 :2k2 resistor :solder (l6) (l10)
( ) R5 :2k2 resistor :solder (n6) (n10)
( ) R6 : 68 resistor :solder (a4) (e4)
( ) R7 : 68 resistor :solder (l4) (p4)
( ) C1 : 22pF capacitor :solder (d15) (e15)
( ) C2 : 22pF capacitor :solder (d21) (e21)
( ) C3 :100nF capacitor :solder (f14) (f15)
( ) C4 : 10uF capacitor :solder + in (n20) (n14) (n20)
( ) C4a: 10uF capacitor :alternatively (n15) (n16)
( ) Q1 :12Mhz quartz :solder (e17) (e19)
( ) D1 : red led 2mA :solder anode in (l11) (l11) (l12)
( ) D2 :green led 2mA :solder anode in (n11) (n11) (n12)
( ) D3 :BAT43 schottky diode:solder anode in (n21) (n21) (n24)
( ) IC1:ATmega48-20PU :solder Pin 1 in (g8)
( ) J3 :jumper SCK :solder (k8) (k9)
( ) K1 :plug :solder
( ) K4 :USB-B-plug :solder
Der Prozessor kann über den ISP-Stecker programmiert werden.
Hierzu sind eine Brücke über die Diode und eine Brücke
zwischen den beiden SMD-Pads zu löten. Nach dem Programmieren
müssen auch die L- und H-Fuse neu gesetzt werden!