| ========================= | |
| Reading Databook Symbols | |
| ========================= | |
| ========== ================================ | |
| **Symbol** **Definition** | |
| 0 Logic Low | |
| 1 Logic High | |
| HL High to Low Transition | |
| LH Low to High Transition | |
| ↑ Positive Clock Edge | |
| ↓ Negative Clock edge | |
| Tin Input Transition 30 to70 % | |
| Delay 50 to 50% | |
| Tout Output Transition 30 to 70% | |
| ? Don't Care (Combinatorial Cells) | |
| X Don't Care (Sequential Cells) | |
| default No “when” condition for Input | |
| n/a No Transition | |
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