| ??? 05/30/07 18:07 Read: times |
#140069 - p89lpc925 with xdata? |
After playing around with the p89lpc925 I found something interesting. Apparently there is built in xdata memory from address 0x0000 to 0x00ff. Also, I think the whole internal direct access data memory (including SFRs) is visible as xdata from 0x0100 to 0x01ff. Can anybody confirm this? The user manual doesn't mention anything about it...
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| Topic | Author | Date |
| p89lpc925 with xdata? | 01/01/70 00:00 | |
| Correction: p89lpc925 with xdata? | 01/01/70 00:00 | |
| it is quite common (always?) that ... | 01/01/70 00:00 | |
| see pg. 3 of the datasheet | 01/01/70 00:00 | |
| oodles and bunches | 01/01/70 00:00 | |
| Can you point me to ONE? | 01/01/70 00:00 | |
| I just pointed you to two (groups) with 8k | 01/01/70 00:00 | |
| What is "Internal"? | 01/01/70 00:00 | |
| quite so! it's logical vs physical | 01/01/70 00:00 | |
| page 13 of the user manual | 01/01/70 00:00 | |
| that's really interesting | 01/01/70 00:00 | |
| "a picture is worth a thousand words" | 01/01/70 00:00 | |
even the picture is misleading | 01/01/70 00:00 | |
| p89lpc938 has 512 bytes of XDATA | 01/01/70 00:00 | |
| Yes, but the lpc 925 has only 256 bytes | 01/01/70 00:00 | |
| p89lpc925 with 256 data + 512 xdata? | 01/01/70 00:00 | |
| put your glasses on | 01/01/70 00:00 | |
| P89LPC925FN 20-dip package | 01/01/70 00:00 | |
| a known practice, but do not rely on it | 01/01/70 00:00 |