MC68HC11KA4 Grundig Radio

[luwie]

917760Hello there !

I'm having problems reading the MC68HC11KA4 (Motorola)
It always comes with "Silent", I use X-prog.
I have a connector on top of the chip.

I connected:

59 MODB/
58 VSTBYRESET
68 VDDEXT
67 VSSEXT (ground)
62 TxD
61 RxD


What am I doing whrong?

[catalinosonesti]

917760Hello there !

I'm having problems reading the MC68HC11KA4 (Motorola)
It always comes with "Silent", I use X-prog.
I have a connector on top of the chip.

I connected:

59 MODB/
58 VSTBYRESET
68 VDDEXT
67 VSSEXT (ground)
62 TxD
61 RxD


What am I doing whrong?
Hi
Maybe source 12 v on the radio , but no power on .
Succes

[kappa1]

Try with cable direct mcu with this connection

[nelutzul40]

You set fecvency to 8000 to xprog?

[MrRepair]

With WKC33883 and similar use 6 pads on PCB bottom near the front to connect. Set osc to 8.000 mhz.

[luwie]

Thank you for the tips :-)

What I saw :
917783

In the drawing from Xprog only 59 MODB is connected to earth.
In this drawing 59 MODB and 60 MODA is connected to Earth.
Maybey this is the problem???

I have to try this.
I will let you know tonight.

[luwie]

Hey Guys..............
I have been trying all options..........................but I still get the same message:
919005

So I tryed Putting MODA and MODB to ground.
I changed the frequncie to 8000.

always the same.....
Frustating......

919008

Maybey I should remove the resistor for the RX and TX????

I'm out off idee's now.................................

[Zmann]

8,000Hz = 8 Khz !

[luwie]

8,000Hz = 8 Khz !

Somebody said 8 Mhz..............
Do you mean it's 8000? so indeed 8khz?


Picture of the kriatal next to the chip

919016

[simplus]

Hi.Install a quartz resonator with a frequency of exactly 8 megahertz!In your photo, the quartz frequency is 08M6640! It's not 8 vmegahertz.

[luwie]

Ok I found the problem it was the Frequentiesetting in Xprog.
It should be the same as on the cristal nearby the MCU.
So in my case it was 8664000 Hz.
All fine now.