| ??? 05/14/10 07:48 Read: times |
#175874 - too deep Responding to: ???'s previous message |
Hi, Douglas,
You are looking too deep - into electrons level. Usually people here need to know how to programm chip, electron level details are work for physicians. Some parts do not need higher(than normal run mode) voltage , some need. I remember one story with Atmel - they produced in same time 12V/6V parts simultaneously with 5V part (i mean prgramming mode). 5V part was stoped - i think due to problems with data retention, or suddenly self-destroying. Here i want to point - high voltages can be used only as hardware protection , and here can be nothing related to electrons and gates. All this depends of manufacturer technology. If You really want to enter into parallel programming mode - write letter to manufacturer and wait answer. For example - some years ago Winbond(Nuvoton) discontinued one part(with published algorithm) . I needed to migrate to new part - without published algorithm. I asked them 2-3 times , and they sended document (after last letter, where i explained that will migrate to other vendor, instead to buy universall programmer to program one chip only). regards |
| Topic | Author | Date |
| programing on chip flash? | 01/01/70 00:00 | |
| of course, you are, | 01/01/70 00:00 | |
| parallel programming | 01/01/70 00:00 | |
| thanks everyone | 01/01/70 00:00 | |
| Not exactly fair | 01/01/70 00:00 | |
| too deep | 01/01/70 00:00 | |
| Internal voltage doublers in some chips for IAP support | 01/01/70 00:00 | |
| hm | 01/01/70 00:00 | |
| actually ... | 01/01/70 00:00 | |
| why to do this? I cant understand :-( | 01/01/70 00:00 | |
| the Manzi book | 01/01/70 00:00 | |
| You mean, "Mazidi" | 01/01/70 00:00 | |
| agreed, and ... | 01/01/70 00:00 | |
| ISP before IAP? | 01/01/70 00:00 | |
| A question of driving force | 01/01/70 00:00 | |
| baloney | 01/01/70 00:00 | |
| programming on chip flash? | 01/01/70 00:00 | |
| If only it were that simple... | 01/01/70 00:00 | |
did you read my remark above... | 01/01/70 00:00 |