| ??? 03/13/05 15:43 Read: times |
#89573 - rate does not matter Responding to: ???'s previous message |
Can u elaborate with some example, like how much time will be saved for same code using h/w and s/w I2C ?
I see this question is addressed to micro (u) so you must wait for his reply Above what rate using 89c66x is feasible/economical? critical rate (or any application) above(for) which h/w i2c is must? The rate does not matter at all what matters is can you afford to stop all other activities during IIC trannsfers? When bitbanging you can not afford interrupts or anything, all resources must be dedicated to the bitbang while it goes on. With hardware (interrupt driven) IIC you can go on happily computing while the transfer takes place. There are means of using timer or PCA that may give you a little bit of room when bitbanging, but that will still say almost all resources if bitbanging. Erik |
| Topic | Author | Date |
| 89C66x and 89C51RD2 | 01/01/70 00:00 | |
| hw IIC vs bitbang | 01/01/70 00:00 | |
| can u illustrate/elaborate wth some code | 01/01/70 00:00 | |
| rate does not matter | 01/01/70 00:00 | |
| Not true ! | 01/01/70 00:00 | |
| Total Agreement | 01/01/70 00:00 | |
| what about XRAM? | 01/01/70 00:00 | |
| XRAM and mnufacturers | 01/01/70 00:00 | |
| XRAM, more | 01/01/70 00:00 | |
| SW-I2C mostly sufficient ! | 01/01/70 00:00 | |
| similar CPU load?? pray explain | 01/01/70 00:00 | |
| "...significant advantage..." | 01/01/70 00:00 | |
| how do you do soft IIC with 1% load | 01/01/70 00:00 | |
| 1% = | 01/01/70 00:00 | |
| Peters 1% | 01/01/70 00:00 | |
| very high data rates?? | 01/01/70 00:00 | |
| consider the whole program ! | 01/01/70 00:00 | |
| Its really very high. | 01/01/70 00:00 | |
| how can microresistance | 01/01/70 00:00 | |
| Forum rules - no SMS | 01/01/70 00:00 | |
the skinny | 01/01/70 00:00 | |
| sorry for the informal language | 01/01/70 00:00 |