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Home › Magazines › 2007 › November › USB Flash Board

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USB Flash Board

An 8051-based system for rapid software development

Published in issue 371, November 2007

USB Flash Board

Flash microcontrollers are easy to program, which makes them suitable for rapid software development environments and educational uses. In the past, program code was usually downloaded via a serial interface, but nowadays many PCs (especially laptops) only have USB ports. Our versatile Flash Board provides a solution to this problem.

Components

Relevant websites

Free downloads

Resistors
R1 = 1kΩ5 8-way SIL array
R2,R3 = 27
R4,R12 = 1kΩ5
R5 = 100
R6,R7,R11 = 4kΩ7
R9 = 8-way 10kΩ array
R10 = 1k
P1 = 10kΩ potentiometer
Capacitors
C10,C11=22pF
C3 = 2nF2
C4 = 10nF
C1,C2,C5,C6,C7,C14,C15,C16 = 100nF
C8 = 10µF 16V
C9 = 1µF 16V
C12 = 1000µF 16V
C13 = 100µF 25V
Semiconductors
D1-D8,D12 = LED, red, low-current
D9 = BAT46
D10 = 1N4001
D11 = zener diode 6V2
IC1 =  AT89C5131AM
IC2 = 7805
X1 = 12MHz quartz crystal
Miscellaneous
JP1,JP4 = 2-way SIL pinheader
JP2,JP3 = 3-way SIL pinheader
K2 = USB-A socket
K3,K6,K8 = 10-way boxheader
K4 = 6-way (2x3) pinheader
K7 = 14-way boxheader
K9 = mains appliance socket, PCB mount
S1,S3-S6 = miniature pushbutton
PLCC socket
PCB, # 070125-1 from Elektor SHOP
Kit of parts, # 070125-71 from Elektor SHOP

Click below to download a PDF copy of this article from Elektor magazine.

 

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PDF PCB
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Order this magazine 
Magazine November 2007
UK371 (US $ 6.20)
 

Order from Elektor 
PCB, bare
070125-1 (US $ 28.90)
Kit of parts, PCB and all parts
070125-71 (US $ 64.40)
 

Free downloads 

Software

Free download
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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Elektor 1990 through 1999

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