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AC Characteristics
±
= 5 V
10%; V
V
CC
SS
C
for all outputs = 80 pF);
L
Parameter
Program Memory Characteristics
ALE pulse width
Address setup to ALE
Address hold after ALE
ALE to valid instruction
in
ALE to PSEN
PSEN pulse width
PSEN to valid instruction
in
Input instruction hold
after PSEN
Input instruction float
after PSEN
Address valid after
PSEN
Address to valid instruc-
tion in
Address float to PSEN
1)
Interfacing the SAB 80C515 to devices with float times up to 75 ns is permissible.
This limited bus contention will not cause any damage to port 0 drivers.
Semiconductor Group
= 0 V (C
for Port 0, ALE and PSEN outputs = 100 pF;
L
T
= 0 to 70 °C for SAB 80C515/80C535
A
= – 40 to 85 °C for SAB 80C515/80C535-T40/85
T
A
Symbol
12 MHz clock
min.
t
127
LHLL
t
53
AVLL
t
48
LLAX
–
t
LLIV
58
t
LLPL
215
t
PLPH
–
t
PLIV
t
0
PXIX
–
t
1)
PXIZ
t
75
)
1
PXAV
–
t
A VIV
0
t
A ZPL
Limit values
Variable clock
1/t
= 3.5 MHz to 12 MHz
CLCL
max.
min.
–
2 t
– 40
C LCL
–
t
– 30
C LCL
–
t
– 35
C LCL
233
–
*
–
– 25
t
C LCL
3 t
– 35
C LCL
150
–
–
0
63
–
t
– 8
C LCL
302
–
–
0
253
Device Specifications
max.
–
–
–
4 t
– 100
C LCL
–
3 t
– 100
C LCL
–
20
t
C LCL –
5 t
115 ns
C LCL –
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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