SAF-C502-2R20N Siemens Semiconductor Group, SAF-C502-2R20N Datasheet - Page 39

• Manufacturer Part Number: SAF-C502-2R20N
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: Siemens Semiconductor Group

AC Characteristics for SAB-C502-L20 / C502-2R20
V
(
Program Memory Characteristics
Parameter
ALE pulse width
Address setup to ALE
Address hold after ALE
ALE low to valid instr in
ALE to PSEN
PSEN pulse width
PSEN to valid instr in
Input instruction hold after PSEN
Input instruction float after PSEN
Address valid after PSEN
Address to valid instr in
Address float to PSEN
*) Interfacing the SAB-C502-L20/C502-2R20 to devices with float times up to 45 ns is permissible. This limited
Semiconductor Group
C
CC
L
bus contention will not cause any damage to port 0 Drivers.
for port 0, ALE and PSEN outputs = 100 pF;
= 5 V + 10 %, – 15 %;
V
SS
= 0 V
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
T
T
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
AZPL
A
A
= 0 ˚C to + 70 ˚C
= – 40 ˚C to + 85 ˚C
*)
*)
min.
60
20
20
–
25
115
–
0
–
47
–
0
38
C
20 MHz
Clock
L
for all other outputs = 80 pF)
max.
–
–
–
100
–
–
75
–
40
–
190
–
min.
2
t
t
–
t
3
–
0
–
t
–
0
Limit Values
1/
CLCL
CLCL
CLCL
CLCL
t
t
CLCL
CLCL
t
CLCL
for the SAB-C502
for the SAF-C502
– 30
– 30
– 25
– 3
– 40
– 35
Variable Clock
= 3.5 MHz to 20 MHz
–
–
–
4
–
–
3
–
t
–
5
–
max.
CLCL
t
t
t
CLCL
CLCL
CLCL
– 10
– 100
– 75
– 60
C502
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns