| ??? 12/02/09 23:40 Modified: 12/02/09 23:41 Read: times |
#171415 - I did not have to pay... Responding to: ???'s previous message |
Jon Ledbetter said:
Well, I clicked and downloaded a scanned pdf of 8021. From it it follows, that it is indeed just a stripped down version of 8048 - less pins, less memories - with a very few other minor differences. External memories - both RAM and code - are also removed, as are the respective instructions, so ALE here serves only as a clock output (Xtal/30, contrary to 8048's Xtal/15). PROG is not a programming pin, rather, it is a strobe to connect to the expander chip, 8243. JW |
| Topic | Author | Date |
| Anyone work with the 8048? | 01/01/70 00:00 | |
| Info | 01/01/70 00:00 | |
| I did not have to pay... | 01/01/70 00:00 | |
| about those MCU's | 01/01/70 00:00 | |
| can the ROM be read? | 01/01/70 00:00 | |
| I have a schematic | 01/01/70 00:00 | |
| Datasheet? | 01/01/70 00:00 | |
| the "PROG" pin has other purpose | 01/01/70 00:00 | |
| production testing | 01/01/70 00:00 | |
| silly me | 01/01/70 00:00 | |
| Looks Good! | 01/01/70 00:00 | |
| doesn't the datasheet make that clear enough? | 01/01/70 00:00 | |
| I Have Data | 01/01/70 00:00 | |
| I will email you | 01/01/70 00:00 | |
| Host An FTP Transfer | 01/01/70 00:00 | |
| He has to get the file to you | 01/01/70 00:00 | |
| That's what the FTP site is for! | 01/01/70 00:00 | |
| Site Setup. | 01/01/70 00:00 | |
| Email Undeliverable | 01/01/70 00:00 | |
| uploaded | 01/01/70 00:00 | |
More old interesting intel stuff | 01/01/70 00:00 |