Lift reset pin from board and try. There should be 5 volts at the reset pin
Hi,
I need help with UPA USB for unlock magneti marelli 8PXX.
I have MC68HCP11A1 to read with UPA. Elrasoft give me this picture and I try to put oscillator in 8000Khz like ECU quartz.
Elrasoft say to read this device as 68HC11A8 old.
So the soft always say that pin 7 (reset)=1,92V and don't read device.
Where the problem ?
Last edited by dof; 4th August, 2010 at 04:38 PM.
Lift reset pin from board and try. There should be 5 volts at the reset pin
Hi dimitar,
Thanks for your help
68HCP11 is remove from board and connect like picture above.
For pin 7 that I lift, I take VCC from pin 9 and connect it at Reset.
Near same result:
device not respond
Voltmeter said pin 7 about 5V like pin 9
What should I do for read it ?
If you have old UPA serial, use it, it will read
Hi Nicamarco,
I have only the last UPA USB.
This device is 1 year old and never use it.
I try to link pin 9 and 7 and read it => not responds
I lift pin 7 => idem
Voltmeter is all green but UPA don't work. No error but device not responds. Clock is 8000Khz.
I verify all UUSP cable and solder on over the MCU.
Have an idea for read and write correctly this MCU ?
Last edited by dof; 4th August, 2010 at 10:46 PM. Reason: again and again precision
>So the soft always say that pin 7 (reset)=1,92V and don't >read device.
>Where the problem ?
The problem is that you have tried to read the chip without an oscillator. It must have a 4-8MHz quartz + 10MOm resistor connected to XTAL EXTAL pins of the chip.
Best solder the chip back to the target boad and make connections as shown in the help.
>68HCP11 is remove from board and connect like picture >above.
>For pin 7 that I lift, I take VCC from pin 9 and connect it at >Reset.
This will damage Reset pin on the chip!
Thanks for all precisions Medved128.
I do it this afternoon and I solder MCU on it board. I connect UUSP and I tell you more.
Regards.
Dof
i have a similar problem with same type of chip, tells me device not responding" i check connections and see that Reset is bad shows up with 1.74v. I could not read too with xprog-m when i put it in socket adapter which was why i tried UPA-USB now. Any luck?
Hi, some people arrived to read this ship with upa RS232. Why USB can't read it ??? Nobody here have solution.....
?????
hi
I'v read this MCU vith UPA : select in MCU list at the end
of list MC68HCP11A1 it is after mc68hc912dg256 and LIFT pins: Reset / MODB / RxD
( see datasheet ) and DONT dessolder MCU of ecu
try this and report
bertero2006 (12th October, 2018), bokilee (24th April, 2014), butugan_mihai (16th July, 2013), geocity (18th June, 2023), kastissu (27th January, 2023), martinracing (28th June, 2015), radek271 (23rd March, 2018), redful (9th May, 2015)
this setting worked perfect for me today thanks for the info bricolo
Thanks
Jimmy
Tested 100%!
ADUIR (27th May, 2013), atomiczen (23rd April, 2015), brahimdyag10 (23rd January, 2020), lesakljucevi (24th April, 2015), martinracing (28th June, 2015), sieman (12th April, 2022), unar (14th January, 2014), vertyk (24th December, 2020)
Sorry, just to appear dim.
Had a ecu - Vauxhall Astra III - HC11 - ended up reading as secure
Proerbly talking crap, but was only way could get it to read
*SORRY* used X-prog not usb-upa
Meat
Was Banned For Being Certifiably Insane and Stupid
Hi,
Your solution is work.
I tested it.
Thanks bricolo
Bookmarks