C504 SIEMENS [Siemens Semiconductor Group], C504 Datasheet - Page 44

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

AC Characteristics for C504-L40 / C504-2R40 (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
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
Semiconductor Group
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
t
t
t
t
t
RLRH
WLWH
LLAX2
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
WHLH
QVWX
QVWH
WHQX
RLAZ
CLCL
CHCX
CLCX
CLCH
CHCL
44
min.
120
120
35
–
0
–
–
–
60
70
10
5
125
5
–
min.
25
10
10
–
–
40-MHz clock
Freq. = 3.5 MHz to 40 MHz
max.
–
–
–
75
38
150
150
90
–
40
–
–
–
0
Variable Clock
Limit Values
Limit Values
min.
6
6
2
–
0
–
–
–
3
4
t
t
7
t
–
CLCL
CLCL
CLCL
t
t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
1/
t
– 15
– 20
– 20
Variable Clock
CLCL
max.
294
t
t
10
10
– 30
– 30
– 15
– 15
– 30
– 50
CLCL
CLCL
40 MHz
= 3.5 MHz to
–
–
t
t
CLCX
CHCX
max.
–
–
–
5
–
2
8
9
3
–
t
–
–
–
0
CLCL
t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
+ 15
– 50
– 12
– 50
– 75
+ 15
C504
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns