4 ms·
When you program a flash cell, you first erase it, then you program it with a new value. Each erasure wears the cell out, so the more bits-per-cell, the longer
by cjensen 10y ago
When you program a flash cell, you first erase it, then you program it with a new value. Each erasure wears the cell out, so the more bits-per-cell, the longer the flash memory will last.
It may also be faster: to read a cell you have to address it and then measure its value. With more bits per cell, you read/write more bits per address cycle.
- Dylan16807 10y agoThese cells are nanometer-scale. Having fractional charges is extremely subtle. It is significantly slower to read and write multiple bits, and it takes a lot fewer writes until it doesn't have enough precision to support that use.