Schematic ISP programmer

[ascopie]

Hello,

Can somebody email me a propper working ISP programmer schematic, the one described in the help file is not very clear to me. Like, does the pin TXD from PC has to be connected with TXD from the

[erik malund]

It would be extremely helpful if you mentioned which chip you were using.

Erik

[ascopie]

Hi,

erh, i'm using the P89C664...

thanks and greetzzz

[erik malund]

>>ISP programmer schematic<<
for the 664 you need absolutely none.  All you need is to connect your PC to the MAX232(equivalent) and off you go.  AN461 state which signals you have to manhandle to trick the chip into program mode.

Erik

ps DO NOT rely on a RC reset, use a supervisor.

[ascopie]

Hi Eric,

Thanks for the information....

greetzzz