| ??? 08/18/05 22:23 Read: times |
#99676 - EPROM? Responding to: ???'s previous message |
I don't know the manufacturer of these chips (Philips?) but usually the second digit in the marking denotes:
0 - ROM (mask programmed) 7 - EPROM 9 - FLASH so it seems to me you have maskROM parts. But even if it is OTP EPROM, you can get half a dozen of ISP (serially - SPI) programmable FLASH AT89S52 (superior in every respect) for around $3 each - I doubt you are able to put together an EPROM programmer for $20... The chance to fail is too high. But if you insist on programming your very chips, put them in an envelope and send them to me, I will program them for you on a device programmer here - provided they are programmable at all. Jan Waclawek |
| Topic | Author | Date |
| P-80C51 Programmer ??????How????? | 01/01/70 00:00 | |
| EPROM? | 01/01/70 00:00 | |
| re: EPROM? | 01/01/70 00:00 | |
| OTP??? | 01/01/70 00:00 | |
| About Atmel coding | 01/01/70 00:00 | |
| it's Intel-based, isn't it? | 01/01/70 00:00 | |
| the numbers game | 01/01/70 00:00 | |
| 2 chip EPROM reader | 01/01/70 00:00 | |
please clarify | 01/01/70 00:00 |