Post by thread:[PICLIST] Cheap or In Circut 16C54C Programmer.

On Thu, Nov 08, 2001 at 10:43:31PM +1300, Andrew Hooper wrote: > Is anyone aware of either and in circut 16C54C programmer or > a simple and cheap programmer similar to what was avalible for > the 16C/F84's Not a chance. The original 16C5X series of chips have several programming issues: 1) They only have a parallel programming interface that requires 12 of the 13 available I/O pins. 2) They are EPROM based, which makes them OTP, or requiring removal with the windowed versions. In circuit works for serial interfaced FLASH based parts because they eliminate these issues. Now having addressed the question, can you tell us why you need to use the 16C54C? You can replace it with a 16F628 (cheaper) or a 16F84[A] and have a simple ICSP interface for development. Parts like the 16C54C and the 16C505 are better utilized in large scale production of finished product because of their sub $1 US price in quantity. But they certainly are not the right part for ICSP. Hope this helps, BAJ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Byron, Im building a DC Speed Controller based on this one. http://www.mcmanis.com/chuck/robotics/projects/servo.html I also have 4X16C54C's allready, and since code has allready been written i dont have to reinvent the wheel :) Actually the situation is this, Im the president of Robot Gladiators Inc a NP Club and we are looking for an inexpensice tank steer ESC that we can build on and modifiy. What i was going to use is 2 of these ESC's and a reworked v-tail mixer as the normal v-tails steer better one way than the other. Thanks for your help. Regards Andrew {Original Message removed}

On Fri, Nov 09, 2001 at 08:54:02AM +1300, Andrew Hooper wrote: > Byron, > > Im building a DC Speed Controller based on this one. > http://www.mcmanis.com/chuck/robotics/projects/servo.html Just took a look. Typical server controller. The 16C54 doesn't seem to be critical. > > I also have 4X16C54C's allready, and since code has allready > been written i dont have to reinvent the wheel :) The source is on the page and should run with any midrange PIC with minimal modifications. But you run into the standard "one in hand, two in bush" problem. I took a 5 second stroll and found David Tait's original 16C5X programmer. I'm attaching the schematic. Quite complicated. In comparison take a look at my Trivial Low Voltage Programmer also attached. A lot simpler. One chip. One resistor. BTW it'll program 16F62X and 16F87X chips in low voltage mode. > > Actually the situation is this, Im the president of Robot Gladiators Inc > a NP Club and we are looking for an inexpensice tank steer ESC that > we can build on and modifiy. Understood. > > What i was going to use is 2 of these ESC's and a reworked v-tail mixer > as the normal v-tails steer better one way than the other. Any 18 pin PIC will work in its place. The 16C54C isn't critical. So here's your likely choices: 1) Buy a complete PIC programmer that does both parallel and serial parts. 2) Spend time/effort putting together a complicated single use programmer to program the 16C54C parts you have. 3) Scrap the 16F54C parts, move up to a newer chip what has a simpler programmer. Personally I'd choose 3 because I'm cheap ;-) and I don't want to spend a lot of time/effort developing tools. Even if the chips cost more, it's worth it if you can reduce your tool development time. BAJ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

On Fri, Nov 09, 2001 at 09:53:40AM +1300, Andrew Hooper wrote: > Byron, > > Yea, I see what you mean.. Atleast 3 would allow me to roll the 2 > controllers into > one and incluce the tank steer :) Well that wasn't my intent. The only three points that I was trying to make is that a 16C54 would be difficult to build simply and cheaply, that the current crop of chips are pin compatible, and that they should run the code with minor modifications. > > I just dont think my programming skills are quite that good, Any volenteers > :) I don't think you'll have to change much. Just follow the specified guidelines for modifying the code. > > Guess it would be nice also to have an incircut programmable unit that would > enable the user to reprogramme without to much hastle. Absolutely. BAJ > > Andrew > {Original Message removed}

Hi, I must correct you: ICSP has also its advantage with OTP chips: u can e. g. make a SMD circuit and put an unprogrammed PIC into. Then, using ICSP, program it. Disadvantage: ICSP has some challenges regarding the circuit. Advantage: u do not need to buy an expensive socket for the SMD circuit. Imre On Thu, 8 Nov 2001, Byron A Jeff wrote: {Quote hidden}> On Thu, Nov 08, 2001 at 10:43:31PM +1300, Andrew Hooper wrote: > > Is anyone aware of either and in circut 16C54C programmer or > > a simple and cheap programmer similar to what was avalible for > > the 16C/F84's > > Not a chance. The original 16C5X series of chips have several programming > issues: > > 1) They only have a parallel programming interface that requires 12 of the 13 > available I/O pins. > > 2) They are EPROM based, which makes them OTP, or requiring removal with the > windowed versions. > > In circuit works for serial interfaced FLASH based parts because they eliminate > these issues. > > Now having addressed the question, can you tell us why you need to use the > 16C54C? You can replace it with a 16F628 (cheaper) or a 16F84[A] and have > a simple ICSP interface for development. > > Parts like the 16C54C and the 16C505 are better utilized in large scale > production of finished product because of their sub $1 US price in quantity. > > But they certainly are not the right part for ICSP. > > Hope this helps, > > BAJ > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics