C505-2RM SIEMENS [Siemens Semiconductor Group], C505-2RM Datasheet - Page 71

• Manufacturer Part Number: C505-2RM
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle, cont’d)
External Data Memory Characteristics
Parameter
RD pulse width
WR pulse width
Address hold after ALE
RD to valid data in
Data hold after RD
Data float after RD
ALE to valid data in
Address to valid data in
ALE to WR or RD
Address valid to WR
WR or RD high to ALE high
Data valid to WR transition
Data setup before WR
Data hold after WR
Address float after RD
Semiconductor Group
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RLRH
WLWH
LLAX2
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
WHLH
QVWX
QVWH
WHQX
RLAZ
min.
158
158
48
–
0
–
–
–
73
95
10
5
163
5
–
16-MHz clock
Duty Cycle
71
0.4 to 0.6
max.
–
–
–
100
–
51
200
200
103
–
40
–
–
–
0
Limit Values
min.
3 CLP - 30
3 CLP - 30
CLP - 15
–
0
–
–
–
CLP +
TCL
2 CLP - 30
TCL
TCL
3 CLP +
TCL
TCL
–
1/CLP= 2 MHz to 16 MHz
Lmin
Hmin
Lmin
Lmin
Hmin
Variable Clock
- 50
- 15
- 20
- 15
- 20
C505A / C505CA
max.
–
–
–
2 CLP+
TCL
–
CLP - 12
4 CLP - 50
4 CLP +
TCL
CLP+
TCL
–
TCL
–
–
–
0
C505 / C505C
Hmin
Hmin
Lmin
Hmin
+ 15
- 50
-75
+ 15
1997-12-01
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns