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 |