| ??? 03/24/06 09:58 Read: times |
#112946 - Which part? Responding to: ???'s previous message |
The easiest solution would be to use a 3.3V DPRAM. But if that is not an option (due to availability or whatever), then you should choose a part that has TTL compatible levels. That essential parameter to look for in the datasheet is Vih; the minimum input 'high' voltage. For a TTL compatible part this will be 2V, which is easily delivered by the F124.
The inputs of the F124 are 5V tolerant, so no problems there. Regards, Rob. |
| Topic | Author | Date |
| interfacing 5V SRAM to 3.3V micro | 01/01/70 00:00 | |
| level convertor | 01/01/70 00:00 | |
| Which part? | 01/01/70 00:00 | |
| not entirely correct | 01/01/70 00:00 | |
| 'scuse me? | 01/01/70 00:00 | |
| compared to 3V3 to 3V3 or 5V to 5V | 01/01/70 00:00 | |
| Entirely not correct | 01/01/70 00:00 | |
| IDT7005L20J | 01/01/70 00:00 | |
| "Using C8051Fxxx in 5 Volt Systems"... | 01/01/70 00:00 | |
comments on the appnote | 01/01/70 00:00 |