- on Microcontrollers
- Published in issue 4/2007 on page 0
Programmer for Freescale 68HC(9)08
First steps in 8-bit development
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CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1 = 1M?
R2 = 10k?
R3,R5,R9 = 680?
R6,R7,R8 = 1k?
C1,C6 = 22 pF
C2-C5 = 1µF 16V
C9,C10 = 47µF 16V
C16, C17 = 100nF
D1 = 1N4004
D2 = 1N4148
D3 = zener diode 9.1V / 400mW
D4 = LED, red, 5mm
IC1 = 74AC04N
IC2 = MAX232 (Maxim)
IC3 = 7805
S1 = momentary switch, push-to-make
X1 = 9.8304MHz quartz crystal
K1 = HE10 header, 2 rows of 8 contacts
K2 = 9-pin sub-D socket (female), PCB mount
K3 = snap-off pinheader, 1 row of 2 contacts (Power)
JP1 = snap-off pinheader, 2 rows of 3 contacts
PCB, ref. 060263, from The PCBShop