ISP for 89S51 89S52
SCHEMATIC.PDF modified schematic with onboard USB cable port
LAYOUT.PDF image of PCB layout viewed from the top layer
LAYOUT2.PDF mirror layout
BOM.PDF component lists
ISP-30a.zip Asim's Loader Software
Source full copyrights belongs to :
Wichit Sirichote, kswichit@kmitl.ac.th
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About ISP complete details : Click here
Complete page Website
About ISP complete details : Click here
Hello Sir,
ReplyDeleteFirstly thanks for the detailed schematic and layouts. I am trying to build this at home, and I intend to program AT89S52 thorough my laptop. Your clarifications on the following doubts shall be very helpful:
1) Can the CON10AP (J1), be replaced with a 9pin DB connector? Does the pin connections change if I try to do that? The schematic shows that MISO connects at pin 10, where will it go on the DB9? Using this DB9 can i directly connect to the programmer using a serial to USB connector?
2)The circuit works on 5V. What is the Voltage regulator that can be used with a 12V supply? Can you please guide me to its schematic as well?
3) I dis not understand how the USB connector is connecting to the microcontroller? Can you please help me with this?
Thanks in advance. Appreciate your work.
even i wanted a little insight on working with rs232 and 89s52 and programming through using the laptop.the device is not detected in the isp.
Deletei want to get in touch with u engineer jagan ,,can u please add me up on whatsapp orr call with +2348066115243
ReplyDelete