| ??? 06/15/05 10:22 Read: times |
#94999 - 5V FRAM/3V FRAM Responding to: ???'s previous message |
For 5V FRAMs the guaranteed limit is 10^10 accesses (reads and writes). On a 1MHz I2C it takes approx. 20 clocks to read or write the same byte, so it can be worn out within two-three days - but frankly, does one need to access a single byte each 20us?
The 3V FRAMs are specified to have unlimited number of accesses. An another issue is retention, which decreases rapidly with temperature. It is rated 10 years at 85°C, but you should never go higher with temperature than that. Jan Waclawek |
| Topic | Author | Date |
| 89s52 | 01/01/70 00:00 | |
| similar to SRAM | 01/01/70 00:00 | |
| IAP | 01/01/70 00:00 | |
| Problem with IAP and 89c669 | 01/01/70 00:00 | |
| think | 01/01/70 00:00 | |
| non-volatile ram | 01/01/70 00:00 | |
| eeprom or nvram | 01/01/70 00:00 | |
| ramtron | 01/01/70 00:00 | |
| FRAM | 01/01/70 00:00 | |
| 5V FRAM/3V FRAM | 01/01/70 00:00 | |
| how much data and how fast | 01/01/70 00:00 | |
| Another simple possibility.... | 01/01/70 00:00 | |
| RAMTRON FRAMs + SPI, parallel | 01/01/70 00:00 | |
| SRAM, NVRAM, FLASH, EEPROM | 01/01/70 00:00 | |
| FRAM | 01/01/70 00:00 | |
| FRAM Life | 01/01/70 00:00 | |
| FRAM life II. | 01/01/70 00:00 | |
| Ramtron, Fujitsu, and others | 01/01/70 00:00 | |
| others? | 01/01/70 00:00 | |
| FRAM life | 01/01/70 00:00 | |
| cycles | 01/01/70 00:00 | |
endurance - the 5/3V puzzle | 01/01/70 00:00 |