Rainbow Electronics AT89C5122 - Manual (Page 194)

194
AT8xC5122/23
4202E–SCR–06/06
External Program Memory
Read Cycle
Table 115. AC Parameters for a Variable Clock
Symbol Type
Standard
clock X2 Clock X parameter Units
T
LHLL
Min 2T - x T - x 15 ns
T
AVLL
Min T - x 0.5 T - x 20 ns
T
LLAX
Min T - x 0.5 T - x 20 ns
T
LLIV
Max 4T - x 2 T - x 35 ns
T
LLPL
Min T - x 0.5 T - x 15 ns
T
PLPH
Min 3T - x 1.5 T - x 25 ns
T
PLIV
Max 3T - x 1.5 T - x 45 ns
T
PXIX
Min x x 0 ns
T
PXIZ
Max T - x 0.5 T - x 15 ns
T
AVIV
Max 5T - x 2.5 T - x 45 ns
T
PLAZ
Max x x 10 ns
12 T
CLCL
T
LLIV
T
LHLL
T
LLPL
ALE
T
PLPH
PSEN
PORT 0 INSTR IN A0-A7 INSTR IN A0-A7 INSTR IN
T
LLAX
TPLAZ
T
PXAV
T
AVLL T
PXIX
T
PXIZ
T
PLIV
T
AVIV
PORT 2
ADDRESS
OR SFR-P2
ADDRESS A8-A15 ADDRESS A8-A15