SAB 80C515/80C535
AC Characteristics for SAB 80C515-20 / 80C535-20
= 5 V ± 10 %; V = 0 V T = 0 ˚C to + 70 ˚C
V
CC
SS
A
(C for port 0, ALE and PSEN outputs = 100 pF; C for all other outputs = 80 pF)
L
L
Parameter
Symbol
Limit values
Unit
20 MHz
clock
Variable clock
= 3.5 MHz to 20 MHz
1/t
CLCL
min. max.
min.
max.
Program Memory Characteristics
ALE pulse width
t
t
t
t
t
t
t
t
60
20
20
–
–
2 t
– 40
–
ns
ns
ns
LHLL
AVLL
LLAX
LLIV
CLCL
Address setup to ALE
Address hold after ALE
ALE low to valid instr in
ALE to PSEN
–
t
t
– 30
–
CLCL
CLCL
–
– 30
–
100
–
–
4 t
–
– 100 ns
CLCL
25
115
–
t
– 25
ns
ns
ns
ns
LLPL
PLPH
PLIV
PXIX
CLCL
PSEN pulse width
PSEN to valid instr in
–
3 t
–
– 35
–
CLCL
75
–
3 t
–
– 75
CLCL
Input instruction hold
after PSEN
0
0
)
Input instruction float
after PSEN
t
*
–
40
–
t
– 10
CLCL
ns
PXIZ
)
Address valid after PSEN t
*
47
–
–
t
– 3
CLCL
–
ns
ns
ns
PXAV
AVIV
AZPL
Address to valid instr in
Address float to PSEN
t
t
190
–
–
0
5 t
–
– 60
CLCL
0
)
* Interfacing the SAB 80C515 / 80C535 microcontrollers to devices with float times up to 45 ns is permissible.
This limited bus contention will not cause any damage to port 0 drivers.
Semiconductor Group
48
INFINEON [ Infineon ]
