标题: PIC18 programmer [打印本页] 作者: liyf 时间: 2011-11-24 21:14 标题: PIC18 programmer PIC18 programmer
The SCHAER+ programmer is a programmer for PIC18 family from a PC parallel port (LPT). It is derivated from the SCHAER programmer I used to download my projects in PIC1684. The SCHAER+ programmer should be improved to use a USB connection, without any external power supply...
> Prototype
The SCHAER programmer I'm currently using allows me to program chips like PIC16F84 by managing 5 signals through parallel port :
VCC : switch ON or OFF the chip to program
VPP : apply the program power supply on VPP pin
DATA_IN : serial data transmission (PC -> PIC)
DATA_OUT : serial data transmission (PIC -> PC)
CLOCK : clock transmission
The original circuit has been design for PIC16F84. A special adpater for chips with 20 and 40 pins has been necessary. The main modification of the layout concerns the activation of the VPP signal, firstly generated by 2 signals.
> Building the board
The programmer exists in a "ready-to-use" state for people who wants to spare time or have some trouble with the circuit. It's distributed by Pagmatec : www.pragmatec.net
SCHAER+ SCHAER+.jpg
You can program the entier PIC16 and PIC18 families:
SCHAER+.jpg