Messages

The address in the record is wrong. Download start900.a51 from www.keil.com and use that. It's a more user-friendly way of programming UCFG1 from a hex file.

Andy

Great, it works. But I can't explain the meaning of the special hex record reported in the P89LPC932A1 user manual, in the section devoted to ISP.

Hello,all!
Flash Magic 3.51.205
LPC932A1
ISP
Manually added this record to hex file:
:020000020003F9
Should set UCFG1 to 0x03 (see uc user manual), but it actualy does not. Reading the device configuration, still reports default factory values.

The exact same record works if entered from the terminal window! It seems the record is skipped by flash magic, or that AFTER normal programming, it resets the UCFG1 register.

What's happening?

Thank you!

Hello,
I've found that at my reseller P89PLC938 are cheaper than 932A. How can it be possible? Is the 938 fully compatible with 932? Or it lacks something?
Thank you!

Good morning,
1)I'm trying to enter ISP mode through timed pulses on RESET pin, but without success. The pulses are generated by a pin of another P89LPC932 in push-pull mode, while the VCC of the micro to be programmed is switched by a P-MOS. Either the micros are powered at 5V, through a green led which lower the voltage to 3.3V. I'm sure the micro to be programmed works, since it goes on executing the code in normal way, ignoring the pulses. Ground pins of the micros  are connected, voltage levels seems ok.... What may be the reason of the failure? Can anyone show me the plot af a really working RESET signal?
2)I'm a bit confused about ISP and ICP. How can be a micro forced to ICP instead of ISP? And if this is done by the same pulses on the RESET pin, how can the micro know which of the two methods enter?

Thank You
John