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ISP programming of AT89C51ED2
david.prentice wrote:Although the Atmel and NXP devices hold their bootloader in a protected area, I believe that you can replace them, but I don't know the procedure. Why do...
Wednesday, 22 May 2013 - 23:45
Voltage Comparators
whitebengal wrote: They have a voltage drop of 2V on the output pin, leaving me with 10V - 26V. The max output current is 100mA with over current protection. The spec sheet...
Wednesday, 22 May 2013 - 11:14
ISP programming of AT89C51ED2
krunal_299 wrote: Basically factory settled AT89C51ED2 can be programmed via HVPP or USART. But by using modified Bootloader (at user end), it is possible to program the built-in...
Wednesday, 22 May 2013 - 10:53
possible to create highly accurate delayMicroseconds routine
nondescript wrote:Thank you again for the replies. I am trying to make piezo speaker work so i need very accurate timing in microseconds.. 4234 us, 425 us, etc I tried using...
Sunday, 19 May 2013 - 23:54
SPI using 89v51(nxp)
capix.ramli wrote: the available mcu for me right now is 89v51. that's why i want to know about it..^^ I guess it depends on what your time is worth ? It would still be...
Friday, 17 May 2013 - 01:41
SPI using 89v51(nxp)
capix.ramli wrote:Hai all, i really new with SPI, and i not very sure about it. what i understand is i need a clk, dio, dout and cs to use it. can anyone help me with this? can...
Friday, 17 May 2013 - 00:37
AT89LP6440 with AVRISPMKII ?
david.prentice wrote:@Who-me, Well done for finding the Atmel ISP design. Can you find anything about the 'AT89LP development board'? The on chip debugging of the LP6440 would be...
Wednesday, 8 May 2013 - 09:17
AT89LP6440 with AVRISPMKII ?
david.prentice wrote: I still can't find any evidence of where you could buy the mysterious "AT89LP Development Board". Nor where to buy a programmer. I did find the Hex file...
Wednesday, 8 May 2013 - 08:28
AT89LP6440 with AVRISPMKII ?
david.prentice wrote: Yes, the different manufacturers achieve different timed instructions for their 'single-cycle' chips. In practice it is not very different for Atmel,...
Wednesday, 8 May 2013 - 07:57
AT89LP6440 with AVRISPMKII ?
Gizmos wrote: Thanks for looking this up. I also ordered a couple of the STC 12C5A60S2 parts from a Chinese eBay vendor; they look good in the datasheet, and I'll see how those...
Tuesday, 7 May 2013 - 21:49
Problem with 31250 baud
bhamme wrote:Alright, I'll give that a try. The terminal's I'm using are Realterm and Putty and they don't yell at me if I try to set the baud to 31250. Is it safe to say they'll...
Tuesday, 7 May 2013 - 01:12
AT89LP6440 with AVRISPMKII ?
Gizmos wrote: The 89LP51RD2 (for example) has a serial bootloader in ROM? I missed that too - I thought none of the 89LP parts had bootloaders. I wonder why Atmel left it out...
Monday, 6 May 2013 - 03:01

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