| | | | |
 |  |  |  |
| |||||||
| Micro Controllers Discuss all aspects of micro controllers - building them, coding them, etc. All controllers are welcome - PIC, BASIC, Z8 Encore!, etc. |
 |
| | Thread Tools | Display Modes |
20th April 2008, 12:05 PM
| (permalink) |
| Experienced Member    |  Low Voltage Programming Hey.. I have been wondering .. i am now the owner of a PicKit 2 and have some Low voltage chips... Would i use a normal ICSP connection to program it? Well how would i connect it since its 3.3v and not 5v |
|  |
|
20th April 2008, 12:29 PM
| (permalink) |
| Experienced Member  | LVP normally describes the ability to program at 5V and not require the 13V programming voltage. What LVP chips do you have? Mike. |
|
| |
|
20th April 2008, 02:21 PM
| (permalink) |
| Experienced Member | PIC18LF25J10 aka PIC18F25J10 PIC18LF24J10 aka PIC18F24J10 |
|
| |
|
20th April 2008, 02:27 PM
| (permalink) |
| Experienced Member  | Those are Low voltage chips, not LVP. I've updated the Junebug manual with a 3.3V 24F PIC connection. In a nutshell if the target PICs have their own power supply and you add the clamp diodes (1N4148 should work with a 3.3v supply) it should work. |
|
| |
|
20th April 2008, 02:39 PM
| (permalink) |
| Experienced Member | It looks confusing lol maybe because im tired... Instead of a LM1117 can i use a LM317 and adjust it to 3.3v? Only because i have many on hand and locally is easy to obtain the LM1117 i will of course order but will take like a week or so to get here. |
|
| |
|
20th April 2008, 02:49 PM
| (permalink) |
| Experienced Member | LM317 is fine, you could even use a couple of fresh AA batteries in a pinch. Some folks even use a set of 2 or 3 standard diodes inline with 5V to drop the voltage. Use the unswitched U5V pin if you want your Junebug to supply the 5V. |
|
| |
|
20th April 2008, 03:53 PM
| (permalink) |
| New Member | If you are using a solderless breadboard, there's this product http://ucontroller.com/indexmisc.html It is similar to other breadboard mounted power supplies, but it delivers both 5V and 3.3V. Even if your PIC is 3.3V, you may still have a need for 5V for some of your other components. Brian |
| |
|
20th April 2008, 03:57 PM
| (permalink) | |
| Experienced Member | Quote:
| |
|
| |
|
| Bookmarks |
| Thread Tools | |
| Display Modes | |
| |
Similar Threads | ||||
| Thread | Thread Starter | Forum | Replies | Latest |
| Schottky Voltage clamp | slosjo | General Electronics Chat | 2 | 28th January 2008 07:55 PM |
| Voltage | ElectroMaster | Electronic Theory | 44 | 8th August 2007 05:35 PM |
| I am not getting ripple voltage at the output | dar2525 | General Electronics Chat | 3 | 14th July 2005 02:20 PM |
| convertion of acvoltage to high dcvoltage | panchumarthy | Electronic Projects Design/Ideas/Reviews | 8 | 12th December 2003 01:35 PM |
| Voltage controlled amplifier | Jimbo | Electronic Projects Design/Ideas/Reviews | 2 | 20th October 2003 12:24 PM |
Linear Mode
