| ??? 03/11/05 15:14 Read: times |
#89469 - DESCRIPTION Responding to: ???'s previous message |
DESCRIPTION
The P89C51RB2/RC2/RD2 device contains a non-volatile 16kB/32kB/64kB Flash program memory that is both parallel programmable and serial In-System and In-Application Programmable. In-System Programming (ISP) allows the user to download new code while the microcontroller sits in the application. In-Application Programming (IAP) means that the microcontroller fetches new program code and reprograms itself while in the system. This allows for remote programming over a modem link. A default serial loader (boot loader) program in ROM allows serial In-System programming of the Flash memory via the UART without the need for a loader in the Flash code. For In-Application Programming, the user program erases and reprograms the Flash memory by use of standard routines contained in ROM. This device executes one machine cycle in 6 clock cycles, hence providing twice the speed of a conventional 80C51. An OTP configuration bit lets the user select conventional 12 clock timing if desired. |
| Topic | Author | Date |
| About Serial Communication!!!!!Help | 01/01/70 00:00 | |
| insufficient | 01/01/70 00:00 | |
| Sorry, the crystal is 11.0592MHz | 01/01/70 00:00 | |
| It's a miracle | 01/01/70 00:00 | |
| amazing | 01/01/70 00:00 | |
| Sorry, since the program is very large.. | 01/01/70 00:00 | |
| Large program | 01/01/70 00:00 | |
| Result | 01/01/70 00:00 | |
| do you believe | 01/01/70 00:00 | |
| MAX232C | 01/01/70 00:00 | |
| 19200??? | 01/01/70 00:00 | |
| PCON vs 6 clock | 01/01/70 00:00 | |
| P89C51RD2 6 clocks per machine cycle | 01/01/70 00:00 | |
| DESCRIPTION | 01/01/70 00:00 | |
| Here we go again | 01/01/70 00:00 | |
Re:amazing | 01/01/70 00:00 | |
| H or not | 01/01/70 00:00 | |
| The chip is P89C51RD2 | 01/01/70 00:00 | |
| insufficient | 01/01/70 00:00 | |
| I am not sure about that... | 01/01/70 00:00 | |
| the 'H' is important | 01/01/70 00:00 | |
| is P89C51RD2HBP | 01/01/70 00:00 | |
| Solved | 01/01/70 00:00 | |
| 0xFF ??? | 01/01/70 00:00 |