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Thanks Andy,

I have check all connection is OK. But I still getting all FFs.
I have repeated to power on and off. 9/10 times I was getting FFs.

Why is it so difficult? Please help me.

Best regards,
Ezra

Hello Hitesh,

Thanks a lot.
I am using LPC935 on MCB900. I'm using ISP ICP bridge source code V1.2.
I'm beginning so please describe about 'My T1 & T2 are 100msec'. Where am I   change this T1 & T2?

I want to program the LPC908 was installed on board. This LPC908 was
disabled brownout.

Best regards,
Ezra

Hi Hitesh,

I modify the MCB900 as ICP programmer.
I have same problem of getting all FFs. I following your idea.
I changed the power supply with the battery. 4 x 1.5V NiMH 2500mA = 6VDC.
And I used the switch to power on/off .
9/10 times I was getting FFs.

Please help me.

Regards,
Ezra

Thanks a lot Andy.

Dear Alls,

I used LPC908 for the pulses counter from digital kWh meter, so when WDT reset is occur, the data memory must not be lost.

The data memory will only saved to the flash code memory (using flash as data storage) when power is down. There's a power detector circuit.

Please tell me the value of Data Memory (included R0-R7) if the Watchdog RESET.

Please give me the solution if I want the data memory is not lost when the WDT reset is occur.

Thanks a lot.
ezra