| ??? 02/04/10 12:18 Modified: 02/04/10 12:18 Read: times |
#172887 - LPC900 are 5V input tolerant Responding to: ???'s previous message |
5V input is no problem so lets talk about outputs.
drive 5V outputs If you need to drive in to 4000 CMOS logic then perhaps you could add a 5V pull up resistor in the following operation. a) Logic level low required - just drive the output low (there will be some current thu the pull-up) b) Logic level low - turn the pin in to an input or Hi Z input and the 5V pull-up will sink current in to the 4000 CMOS etc. Also some of the new LPC900 series Have Vdd up to 5V - ie the LPC9xx1 series. Regards Joseph |
| Topic | Author | Date |
| 5v Flash 8051 (low pin count) | 01/01/70 00:00 | |
| NXP: LPC9xx? | 01/01/70 00:00 | |
| Older? | 01/01/70 00:00 | |
| WHY 5v??? | 01/01/70 00:00 | |
| Yes they have the M8 core | 01/01/70 00:00 | |
| SiLabs Parts Can Interface 5V logic | 01/01/70 00:00 | |
| re SILabs | 01/01/70 00:00 | |
SiLabs | 01/01/70 00:00 | |
| LPC900 are 5V input tolerant | 01/01/70 00:00 | |
| See App Note cited earlier | 01/01/70 00:00 | |
| 5-volt LP9xx1? | 01/01/70 00:00 | |
| check also | 01/01/70 00:00 |