| ??? 01/27/09 22:45 Modified: 01/27/09 22:48 Read: times |
#161765 - Good comments - more thinking Responding to: ???'s previous message |
I was looking at the Austria Microsystems SPI LED drivers.
http://tinyurl.com/at96gz Some have constant current and can be cascaded EG AS1109 8 Constant-Current Output Channels Excellent Output Current Accuracy Between Channels: ±2% Between AS1109 Devices: ±2% Output Current Per Channel: 0.5 to 100mA Controlled In-Rush Current Over-Temperature, Open-LED, Shorted-LED, Diagnostics Functions Low-Current Test Mode Global Fault Monitoring Low Shutdown Mode Current: 10μA SPI 50MHz typ., 30MHz guaranteed Cascaded Configuration Regs Joe |
| Topic | Author | Date |
| LED Maxtrix Driver | 01/01/70 00:00 | |
| MOSI and MISO directions? | 01/01/70 00:00 | |
| Yes - MOSI and MISO should be swaped | 01/01/70 00:00 | |
| Ten Tiles In A Row | 01/01/70 00:00 | |
| Good comments - more thinking | 01/01/70 00:00 | |
| High side Drivers | 01/01/70 00:00 | |
| High Side Switches! | 01/01/70 00:00 | |
Cheers | 01/01/70 00:00 |