SAF-C505-2RM Siemens Semiconductor Group, SAF-C505-2RM Datasheet - Page 73
SAF-C505-2RM
Manufacturer Part Number
SAF-C505-2RM
Description
8-Bit CMOS Microcontroller
Manufacturer
Siemens Semiconductor Group
Datasheet
1.SAF-C505-2RM.pdf
(85 pages)
- Current page: 73 of 85
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AC Characteristics (20 MHz, 0.5 Duty Cycle)
V
(
Program Memory Characteristics
Parameter
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 instruction in
Address float to PSEN
*)
Semiconductor Group
C
CC
L
Interfacing the C505 to devices with float times up to 20 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
A
A
min.
35
10
10
–
10
60
–
0
–
20
–
- 5
= 0 to 70 C for the SAB- versions
= – 40 to 85 C for the SAF- versions
0.5 Duty Cycle
20 MHz clock
73
C
L
for all other outputs = 80 pF)
max.
–
–
–
55
–
–
25
–
20
–
65
–
Limit Values
1/CLP = 2 MHz to 20 MHz
min.
CLP - 15
CLP/2 - 15
CLP/2 - 15
–
CLP/2 - 15
3/2 CLP
- 15
–
0
–
CLP/2 - 5
–
- 5
Variable Clock
C505A / C505CA
max.
–
–
–
2 CLP - 45
–
–
3/2 CLP
- 50
–
CLP/2 - 5
–
5/2 CLP
- 60
–
C505 / C505C
1997-12-01
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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