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Documents signature bytes used on EPROM, AT89C51, 87C51, etc. | Documents signature bytes used on EPROM, AT89C51, 87C51, etc. | ||
Also known as: | |||
* Signature | |||
* Device ID | |||
* Identity code | |||
TODO: | |||
* Are 87C51 and 89C51 signature protocols the same? | |||
** Looks like it | |||
** Also looks like some 8751 support signature | |||
* Do mcs51 mask ROM parts support signature? | |||
* Are EPROM signatures compatible with mcs51 signatures? | |||
** Don't think so...power pins are very different | |||
= JEDEC = | = JEDEC = | ||
| Line 24: | Line 31: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! | ! Sig (hex) | ||
! Vendor | ! Vendor | ||
! Chip label | ! Chip label | ||
! Die ID | ! Die ID | ||
! Notes | |||
|- | |- | ||
| | | 1E51FF | ||
| | | Atmel | ||
| | | AT89C51 | ||
| | | 19052 | ||
| | |||
|- | |- | ||
| | | 9ED100 | ||
| | | Atmel | ||
| | | AT89C51 | ||
| | | 19651 | ||
| | |||
|- | |||
| 1E52FF | |||
| Atmel | |||
| AT89C52 | |||
| (19652) | |||
| Die ID was for a AT89C52, but not verified to have the same signature words | |||
|} | |} | ||
= 87C51 family = | = 87C51 family = | ||
= Referneces = | |||
https://pcmhacking.net/forums/viewtopic.php?f=33&t=4668 | |||
http://www.mcumall.com/forum_GQ/post.asp?method=ReplyQuote&REPLY_ID=3587&TOPIC_ID=2105&FORUM_ID=9 | |||
Latest revision as of 18:32, 12 August 2018
Documents signature bytes used on EPROM, AT89C51, 87C51, etc.
Also known as:
- Signature
- Device ID
- Identity code
TODO:
- Are 87C51 and 89C51 signature protocols the same?
- Looks like it
- Also looks like some 8751 support signature
- Do mcs51 mask ROM parts support signature?
- Are EPROM signatures compatible with mcs51 signatures?
- Don't think so...power pins are very different
JEDEC
https://www.jedec.org/standards-documents/docs/jep-106ab
Think these are flash specific
"JEDEC SOLID STATE TECHNOLOGY ASSOCIATION"
"The intent of this identification code is that it may be used whenever a digital field is required, e.g., hardware, software, documentation, etc."
89C51 family
IDs are found at special NV memory address 0x30-0x32
| Sig (hex) | Vendor | Chip label | Die ID | Notes |
|---|---|---|---|---|
| 1E51FF | Atmel | AT89C51 | 19052 | |
| 9ED100 | Atmel | AT89C51 | 19651 | |
| 1E52FF | Atmel | AT89C52 | (19652) | Die ID was for a AT89C52, but not verified to have the same signature words |
87C51 family
Referneces
https://pcmhacking.net/forums/viewtopic.php?f=33&t=4668
http://www.mcumall.com/forum_GQ/post.asp?method=ReplyQuote&REPLY_ID=3587&TOPIC_ID=2105&FORUM_ID=9