C504 SIEMENS [Siemens Semiconductor Group], C504 Datasheet - Page 43

• Manufacturer Part Number: C504
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

AC Characteristics for C504-L40 / C504-2R40
(
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
*)
Semiconductor Group
V
C
CC
L
Interfacing the C504 to devices with float times up to 25 ns is permissible. This limited 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
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
AZPL
*)
*)
T
T
43
C
min.
35
10
10
–
10
60
–
0
–
20
–
– 5
A
A
40-MHz clock
L
= 0 to 70 C
= – 40 to 85 C
for all other outputs = 80 pF)
max.
–
–
–
55
–
–
25
–
20
–
65
–
Limit Values
min.
2
t
t
–
t
3
–
0
–
t
–
– 5
CLCL
CLCL
CLCL
CLCL
t
t
CLCL
CLCL
1/
t
– 15
– 15
– 15
– 5
Variable Clock
CLCL
– 15
– 15
for the SAB-C504
for the SAF-C504
40 MHz
= 3.5 MHz to
max.
–
–
–
4
–
–
3
–
t
–
5
–
CLCL
t
t
t
CLCL
CLCL
CLCL
– 5
– 45
– 50
– 60
C504
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns