Intel EV80Cl96KB User Manual page 95

Twhqx = 73 ns MIN.
Twhqx(ROMsim) = 9 ns (74AC32 Tplh MAX) + 0 ns (RAM Tdh MIN)
= 9 ns.
Twhqx(U14) = 0 ns (RAM Tdh MIN).
Twhqx(UART) = 12 ns (UART Twhdx MIN).
Twhlh = 73 ns MIN.
Twhlh(ROMsim) = 9 ns (74AC32 Tplh MAX) + 0 ns (RAM Twr MIN)
= 9 ns.
Twhlh(UART) = 0 ns (UART Twhax MIN).
Twtilh(STALE) = 9 ns (74AC08 Tplh MAX) + 3 ns (74AC112 Trem MIN)
= 12 ns.
Twhbx is irrelevant in this design.