| ??? 06/18/13 02:24 Read: times |
#189949 - LP52 Responding to: ???'s previous message |
I have just tested the software on an LP52. The consumption now drops to 0.6mA - much more reasonable.
The programming is flaky (again) though. Programming the LP52 using the AT89ISP adapter isn't really documented, in any documents I can find. I did manage to programme a chip, but verify fails and I can't erase the chip once it's programmed. But the software runs as intended at least... Jim Granville said:
They do have a QFN variant, if you hit high volume production ?
Since you do not need all pins, you could make a relaxed QFN footprint,with only a few solder pads. They have an exposed pad, that "should" be connected to ground. That will be hard on a single sided board :) I think a TQFP footprint with some pads removed should work fine. Mikkel |
| Topic | Author | Date |
| Low-power MCU needed | 01/01/70 00:00 | |
| OK, but wrong | 01/01/70 00:00 | |
| Wrong how? | 01/01/70 00:00 | |
| Silabs options | 01/01/70 00:00 | |
| C8051F99x | 01/01/70 00:00 | |
| Silabs | 01/01/70 00:00 | |
| look it up | 01/01/70 00:00 | |
| Looked up | 01/01/70 00:00 | |
| f53, no | 01/01/70 00:00 | |
| C8051F537A is OK | 01/01/70 00:00 | |
| the current in active mode is not the issue | 01/01/70 00:00 | |
| Inactive current | 01/01/70 00:00 | |
| re: wrong | 01/01/70 00:00 | |
| Consumers | 01/01/70 00:00 | |
| Zilog Z51F0410 | 01/01/70 00:00 | |
| Zilog | 01/01/70 00:00 | |
| Check you are entering idle ? | 01/01/70 00:00 | |
| idle current | 01/01/70 00:00 | |
| Idle test | 01/01/70 00:00 | |
| re: | 01/01/70 00:00 | |
| It floats! It floats! | 01/01/70 00:00 | |
| re:floats | 01/01/70 00:00 | |
| re:floats | 01/01/70 00:00 | |
| Timers | 01/01/70 00:00 | |
| More idle tests | 01/01/70 00:00 | |
| Better regulator? | 01/01/70 00:00 | |
| LR8K4 450V regulator | 01/01/70 00:00 | |
| also try CLKREG | 01/01/70 00:00 | |
| Clk Dividers are a good idea | 01/01/70 00:00 | |
| No dividers | 01/01/70 00:00 | |
| LP52 is cheaper too... | 01/01/70 00:00 | |
| LP52 | 01/01/70 00:00 | |
| No GND pin? | 01/01/70 00:00 | |
| re:idle | 01/01/70 00:00 | |
| Totally idle | 01/01/70 00:00 | |
| Checks | 01/01/70 00:00 | |
| More checks | 01/01/70 00:00 | |
| Power Down ? | 01/01/70 00:00 | |
| test setup | 01/01/70 00:00 | |
| STC | 01/01/70 00:00 | |
| C8051F86x/85x ? | 01/01/70 00:00 | |
| Maybe not such a good choice, after all? | 01/01/70 00:00 | |
| Support? | 01/01/70 00:00 | |
'51 support | 01/01/70 00:00 |