About the article

Programmer Board for the R8C/13


This board is a spin-off of the 10-pound ‘R8C Tom Thumb’ project published in the February 2006 issue of Elektor Electronics.
The author has added an LED behind the 5-V regulator and three small connectors (ground (0V); +5 V on the bottom left) to supply power to potential daughterboards. Connectors are linked to the R8C/13 output ports.
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Component list
R1 = 27k
R2,R5 = 10k
R3 = 4k7
R4 = 100k
R6 = 1k
C1,C4 = 10µF/10V
C23,C3 = 100nF
D1 = 1N4004
D2 = LED, red, dia. 3mm or 5 mm
T1 = BC548C
T2 = BC558C
IC1 = 7805
S1 = pushbutton (reset)
S2 = slide switch, lead pitch 2.5 mm (programming)
K1,K2,K3 = 2-way pinheader
K4 = mains adaptor socket
K5 = 9-way sub-D plug (male), PCB mount
2 lengths of 16-way IC socket strip (for R8C module socket)
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