C505-2RM SIEMENS [Siemens Semiconductor Group], C505-2RM Datasheet - Page 69

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

AC Characteristics (12 MHz, 0.5 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
External Clock Drive Characteristics
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
Oscillator duty cycle
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
Symbol
CLP
TCL
TCL
t
t
DC
R
F
H
L
min.
180
180
56
–
0
–
–
–
75
70
17
5
170
15
–
0.5 Duty Cycle
12 MHz clock
69
min.
83.3
20
20
–
–
0.5
max.
–
–
–
118
–
63
200
220
175
–
67
–
–
–
0
Freq. = 2 MHz to 12 MHz
Limit Values
Variable Clock
min.
3 CLP - 70
3 CLP - 70
CLP - 27
–
0
–
–
–
3/2 CLP - 50
2 CLP - 97
CLP/2 - 25
CLP/2 - 37
7/2 CLP - 122 –
CLP/2 - 27
–
Limit Values
1/CLP = 2 MHz to 12 MHz
Variable Clock
max.
500
CLP-TCL
CLP-TCL
12
12
0.5
C505A / C505CA
max.
–
–
–
5/2 CLP- 90
–
CLP - 20
4 CLP - 133
9/2 CLP - 155 ns
3/2 CLP + 50 ns
–
CLP/2 + 25
–
–
0
C505 / C505C
L
H
1997-12-01
Unit
ns
ns
ns
ns
ns
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns