Print Page - RESET circuit for NXP P89C61X2 microcontroller

Title: RESET circuit for NXP P89C61X2 microcontroller
Post by: rajesh279 on February 19, 2012, 09:52:20 PM

Hi,
I am using Flashmagic to program P89C61X2BN microcontroller through ISP. There is no RESET circuit available on board.
Can anyone please provide me a RESET circuit to RESET the controller in ISP mode before using Flashmagic ?

Regards
R.S.

Title: Re: RESET circuit for NXP P89C61X2 microcontroller
Post by: Andy Ayre on February 20, 2012, 12:10:59 AM

Typically reset circuits are a capacitor and resistor or an external watchdog device. Then you just need a jumper or switch on the ISP entry pin per the device user manual.

Andy

Title: Re: RESET circuit for NXP P89C61X2 microcontroller
Post by: rajesh279 on February 21, 2012, 05:52:10 AM

Please see the attached circuit. The pin 11,12 and 13 of LS245 is connected to STCP, SHCP and DS pin respectively of 74HC595.

Flash Magic Forum

In-System Programming Support => P89C51Rx+/P89C51Rx2/P89C66x/P89C6xX2/P89V66x => Topic started by: rajesh279 on February 19, 2012, 09:52:20 PM