UPA USB and 68HCP11A1 as 68HC11A8 old

[dof]

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 ?

[dimitar]

Lift reset pin from board and try. There should be 5 volts at the reset pin

[dof]

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 ?

[nicamarcos]

If you have old UPA serial, use it, it will read

[dof]

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 ?

[medved128]

>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!

[dof]

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

[nicamarcos]

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 ?

I had many times this problem reading IAW8P mcu`s, and with old UPA rs232 was sorted. I don`t know what is the cause.

[sogaro]

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?

[dof]

Hi, some people arrived to read this ship with upa RS232. Why USB can't read it ??? Nobody here have solution.....

?????

[bricolo]

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

[jimthejock]

this setting worked perfect for me today thanks for the info bricolo

[INJECTMDS]

Tested 100%!

[Meat-Head]

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

[Ginocar]

Hi,

Your solution is work.
I tested it.
Thanks bricolo