Newbie- PICkit 2 mod for program higher pin count

[oxford]

Basically I need to program a 28 pin count chip without breaking the bank and getting another programmer.

I have the PICkit 2 and want to know if I can jimmy it to program a chip with more than 20 pins.

Since there are only six wires going into the circuit board for programming the PICs, I figure this should be possible.

What is the hardware setup, and will MPLAB be fussy with me using a device to program a chip with a larger pin count?

Thanks

[irving2008]

Originally Posted by oxford Basically I need to program a 28 pin count chip without breaking the bank and getting another programmer. I have the PICkit 2 and want to know if I can jimmy it to program a chip with more than 20 pins. Since there are only six wires going into the circuit board for programming the PICs, I figure this should be possible. What is the hardware setup, and will MPLAB be fussy with me using a device to program a chip with a larger pin count? Thanks

What PIC chip do you want to program?

[oxford]

28-DIP

[irving2008]

According to Microchip's documentation on PICkit2 the 18F24J10 is a supported device (see LH side of page approx 1/2 way down)

You will need to download device file 1.53 which is part of the PICkit software release 2.55 and may need to upgrade your MPLAB IDE to V8.14. I'm sure both of which are available on the Microchip site somewhere....

[oxford]

To burn the chip, which pins do I need to connect?

Vdd, Ground, ....MCLR???

[irving2008]

Originally Posted by oxford To burn the chip, which pins do I need to connect? Vdd, Ground, ....MCLR???

The same pins as any other 6-pin in-circuit programming I would have thought. IF you are not using the low voltage programming mode then /MCLR (Programming volts) on pin 1, +5v on Vdd, ground on Vss, ICSP Clock on pin 27 and ICSP data on pin 28.

These pin numbers are different from the 20pin devices, many of which dont have a low voltage programming mode.

I'd read the data sheet and application notes carefully to be sure...

[oxford]

Time to try it all out:P

[FunnyNYPD]

Check out this tutorial:
http://www.auelectronics.com/Q8.htm

Also some New BB0703+ has been added to the popular BB0703 family, here is some summaries.

BB0703+128K and BB0703+256K has the following Enhanced features to PICkit 2:
1. USB buck/boost circuits, guarantee internal +5V supply at all USB normal voltage inputs situation (4.1V to 5V normal), this will secure high quality programming voltage on PICKit2.
2. RJ12 Connector be compatible to ICD2/ICD3/RealICE.
3. dedicated external power supply circuit for Programmer-to-Go feature.
4. Native support 256K byte of Memory on "BB0703+256K", no hardware hack on PICkit2 is necessary.

For more info, please refer to:
http://www.auelectronics.com/System-PICkit2.htm
http://www.auelectronics.com/UserManual-BB0703.htm

[FunnyNYPD]

Thanks for all you guys inputs, there is some special sales event for all people provides helps.
Please see the bottom of this web page to redeem the little thanks we can offer:
http://www.auelectronics.com/System-PICkit2.htm
(The quantity is limited and it is a first come first service.)
Some Sample of photos of the special sale:


major feature lists of BB0703+, BB0703, and closest competitors: