| ??? 06/06/13 00:52 Read: times |
#189870 - No Crystal needed Responding to: ???'s previous message |
Mikkel C. Simonsen said:
But perhaps a crystal or external oscillator is needed for programming? I was hoping someone had attempted this before.
LP214 Data says The ISP Interface does not require any clock other than SCK and is not limited by the system clock frequency. During In-System programming the system clock source of the target device can operate normally. and it also says • The SS pin should not be left floating during reset if ISP is enabled. • The ISP Enable Fuse must be set to allow programming during any reset period. If the ISP Fuse is disabled, ISP may only be entered at POR. If there is no device, does it complain about DeviceID ? Usually a programmer reads-back the Device ID, and that can be a good sanity check. AT89LP213: Atmel Signature Bytes Address 00H = 1EH 01H = 27H 02H = FFH AT89LP214: Atmel Signature Bytes Address 00H = 1EH 01H = 28H 02H = FFH If that still does not work, I think this supports LP214 http://www.8052.com/forum/read/188800 LP214 shows on the ISP via SPI menu, and you need to pgm a simple C51 as a Serial-spi bridge (code supplied). |
| Topic | Author | Date |
| Programming AT89LP214 | 01/01/70 00:00 | |
| easily | 01/01/70 00:00 | |
| Not so easy with an Arghmel | 01/01/70 00:00 | |
| How certain are you of the applicability of your cable? | 01/01/70 00:00 | |
| Correct, ancient, cable | 01/01/70 00:00 | |
| No Crystal needed | 01/01/70 00:00 | |
| More testing | 01/01/70 00:00 | |
| SS is needed | 01/01/70 00:00 | |
| The secret SS pin | 01/01/70 00:00 | |
| Secret SS | 01/01/70 00:00 | |
| Parallel ports are easy to find... | 01/01/70 00:00 | |
| Bugs... | 01/01/70 00:00 | |
| Bugs... | 01/01/70 00:00 | |
| Size matters | 01/01/70 00:00 | |
| with all this stupid stuff I would immediately ... | 01/01/70 00:00 | |
Alternatives | 01/01/70 00:00 | |
| What do you expect ... it's ATMEL | 01/01/70 00:00 | |
| this is ATMEL ... what do you expect? | 01/01/70 00:00 |