circuit simulator for 8051 microcontrollers

Started by Srinivas Nayak in sci.electronics.design8 years ago 7 replies

I am looking for a circuit simulation software, so that I can make a circuit using ds89c430 microcontroller, simulate/check and then purchase the...

I am looking for a circuit simulation software, so that I can make a circuit using ds89c430 microcontroller, simulate/check and then purchase the parts and make a kit. Can you please let me know, which circuit simulation software is good, and supports 8051 microcontrollers. Better if open source / free circuit simulation software.


Cleaning shop...

Started by mpm in sci.electronics.design5 years ago 3 replies

Watch this space (if you're interested). Partisanship and nepotism definitely encouraged on this one... I'm going to be unloading a boatload...

Watch this space (if you're interested). Partisanship and nepotism definitely encouraged on this one... I'm going to be unloading a boatload of electronic parts and equipment very soon. CHEAP. As in, a $50 steak dinner and you pick up the shipping. Ideal purchaser, and my strong preference: An EE or similar student. I'll inventory it all this weekend. It's mostly 8051-derivatives dev...


Delta Sigma DAC article

Started by Charlie E. in sci.electronics.design8 years ago 9 replies

Hi All, Ok, going crazy (short trip, I know...) A few months ago, I saw an article that included information on delta sigma DACs, inlcuding...

Hi All, Ok, going crazy (short trip, I know...) A few months ago, I saw an article that included information on delta sigma DACs, inlcuding some code the author had written, I belive for an 8051, to implement one in software. So, now that I finally want to try it out, I can't find it anywhere. Anyone know what magazine or have a link to that article? I thought it was in EDN, but can't f...


8051F020 series, 5V tolerant input schematic?

Started by Joerg in sci.electronics.design7 years ago 89 replies

Folks, Got a Silicon Labs 8051Fxxx with 5V-tolerant ports. In the abs max it says 5.8V is the limit. Well, if one uses the typical diode...

Folks, Got a Silicon Labs 8051Fxxx with 5V-tolerant ports. In the abs max it says 5.8V is the limit. Well, if one uses the typical diode against the 5V rail it could go slightly above 6V in case of a really big jolt. Since this 8051 does not have a 5V supply but just VDD (which hangs on 3.3V in this case) there can't be any parasitic substrate diodes dumping into a rail. Does anyone kno...


Are some 8051s ICP compatible?

Started by Anonymous in sci.electronics.design7 years ago 3 replies

I've never used an 8051/8052, but have used other uCs. I have an 8052 comp= atible chip in a commercial product that has a defective pin, and...

I've never used an 8051/8052, but have used other uCs. I have an 8052 comp= atible chip in a commercial product that has a defective pin, and I'm tryin= g to figure out if I could possibly read the firmware from it and replace i= t. In other words, is it code protected. The original is made by Winbond, now Nuvoton, part w78e052c40dl. It would = be nice if I could figure out if it's code ...


Uart through an audio transformer

Started by Martin Griffith in sci.electronics.design12 years ago 27 replies

Any rules of thumb about sending a 9600 baud UARTsignal ,from an 8051 through a telecom type V90 audio transformer, (LT spice K L1 L2 1 @ 4mH Rs...

Any rules of thumb about sending a 9600 baud UARTsignal ,from an 8051 through a telecom type V90 audio transformer, (LT spice K L1 L2 1 @ 4mH Rs = 10R) I only need about 8 bytes of data, and LTspice seems to need a square wave for about a millisecond before it settles down. So a long sync word of 010101 etc then a start byte? I'll pad the sig down to 100mV or so martin


Ack!! AT89S8253 (8051 microcontroller problem)

Started by mpm in sci.electronics.design3 years ago 11 replies

For the life of me, I don't know what is wrong. And I'm on a deadline. I'm trying to bit-bang an 8-CH, 12-bit A/D converter. It's a Microchip...

For the life of me, I don't know what is wrong. And I'm on a deadline. I'm trying to bit-bang an 8-CH, 12-bit A/D converter. It's a Microchip MCP3208, attached to port-1. Although it is connected to the uPC's SPI port, I'm not using that feature because my development tools don't support it natively, and I don't have time to mess with workarounds. The SPI's functions are disabled (S


Hack a datalogger into existing design

Started by mpm in sci.electronics.design6 months ago 4 replies

Pretty sure the answer is "Yes", but let me ask it anyway.... Situation: Need to add a datalogger to an existing design, but there are no free...

Pretty sure the answer is "Yes", but let me ask it anyway.... Situation: Need to add a datalogger to an existing design, but there are no free ports left on the microcontroller. The microcontroller is an AT89LP51ED2. (An 8-bit, 8051 variant) Port-0 outputs data ONLY to (3) D-Type transparent octal latches (74ACT573N), which are individually latched via some pins on Port-2 of the microcont...