| ??? 03/15/10 12:56 Read: times |
#174149 - Ideally a single chip design Responding to: ???'s previous message |
The main advantage of a microcontroller is that it integrates everything onto one chip, and you have very simple hardware.
On the other hand some 8051 systems use external RAM and the associated driver chips. So if you have a shed full of these existing systems with large RAM chips, you can make them execute from RAM. You also need to add your eeprom/SDCard/SPI storage. On the other hand, if each of your students are currently connected to a PC to program them via ISP. You might just as well load in a new standalone executable every time. I would guess that your 89S52's do not have a lot of program space anyway. On the other hand, if you are thinking of a new design, an NXP 89C51RD2 type of chip just needs a RS232 line. Or you go to ANY other type of microcontroller that has a simple bootloader process. David. |
| Topic | Author | Date |
| Controlling /EA with a port pin? | 01/01/70 00:00 | |
| Why would you want do this?? | 01/01/70 00:00 | |
| Allowing system upgrades via MIDI sysex in the field | 01/01/70 00:00 | |
| So why on an 8051? | 01/01/70 00:00 | |
| Challenge?? | 01/01/70 00:00 | |
| Old fashioned 8031 dev boards | 01/01/70 00:00 | |
| Helpful points | 01/01/70 00:00 | |
| Good match | 01/01/70 00:00 | |
Budget | 01/01/70 00:00 | |
| See value to an extent... | 01/01/70 00:00 | |
| Internal XDATA addresable as XCODE? | 01/01/70 00:00 | |
| Executing code from XRAM | 01/01/70 00:00 | |
| Code in OnBoard XRAM | 01/01/70 00:00 | |
| Don't overlook other options ... | 01/01/70 00:00 | |
| FX2 | 01/01/70 00:00 | |
| I bet you can't | 01/01/70 00:00 | |
| Ideally a single chip design | 01/01/70 00:00 |