| ??? 12/18/06 05:35 Read: times |
#129655 - is an external UART cheaper? Responding to: ???'s previous message |
I don't think so ...
It might be less costly to use a dual UART of some sort on the DS89C450 or whatever. However, it's hard to beat the cost and performance of the little 20-pin MCU's. The DS89C450 allows you to set the length of an external bus cycle as needed, so you can use a UART that ordinarily couldn't live at the pace of the DS89C450. That might avoid some of the software overhead involved in handshaking the parallel interface. RE |
| Topic | Author | Date |
| newbie interfacing rs232 | 01/01/70 00:00 | |
| details... | 01/01/70 00:00 | |
| re: details... | 01/01/70 00:00 | |
| Automatic serial data switch? | 01/01/70 00:00 | |
| B & B? | 01/01/70 00:00 | |
| A bit OTT? | 01/01/70 00:00 | |
| Try DS89C450, AT89S2051 (qty 2) | 01/01/70 00:00 | |
| Why more microcontrollers? | 01/01/70 00:00 | |
| is an external UART cheaper? | 01/01/70 00:00 | |
| Are we over-complicating this? | 01/01/70 00:00 | |
Can switch autmatically in hardware | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 |