ST10R272L STMicroelectronics, ST10R272L Datasheet - Page 59

• Manufacturer Part Number: ST10R272L
• Description: 16-BIT Romless MCU WITH MAC UNIT
• Manufacturer: STMicroelectronics

Specifications of ST10R272L

• Cpu Frequency: 0 to 50 MHz
• Power: 3.3 Volt +/-0.3V

16.3.4
V
ALE cycle time = 4 TCL + 2
Parameter
ALE high time
Address (P1, P4), BHE
setup to ALE
Address setup to RD, WR
(with RW-delay)
Address setup to RD, WR
(no RW-delay)
RD, WR low time
(with RW-delay)
RD, WR low time
RD to valid data in
RD to valid data in
ALE low to valid data in
Address to valid data in
Data hold after RD
rising edge
Data float after RD rising
edge (with RW-delay)
Data float after RD rising
edge (no RW-delay)
Data valid to WR
(no RW-delay)
(with RW-delay)
(no RW-delay)
DD
= 3.3 V
Demultiplexed Bus
0.3 V
1 2
1) 2)
V
SS
t
A
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
+
5
6
80
81
12
13
14
15
16
17
18
20
21
22
= 0 V
t
C
Table 18 Demultiplexed bus
+
CC
CC
CC
CC
CC
CC
SR
SR
SR
SR
SR
SR
SR
CC
t
F
(40 ns at 50 MHz CPU clock without waitstates)
Max CPU Clock 50MHz
min.
7 +
3 +
13 +
3 +
13 +
23 +
–
–
–
–
0
–
–
13 +
t
t
2t
A
A
2t
t
t
t
ST10R272L - ELECTRICAL CHARACTERISTICS
C
C
C
A
A
T
A
max.
–
–
–
–
–
–
5 +
15 +
15 +
20 + 2
t
–
15
+
5 +
2
–
= -40 to +85 °C
C
t
A
t
F
2
t
t
+ 2
C
F
t
t
C
A
+
t
A
t
+
A
+
2
t
C
Variable CPU Clock
1/2TCL = 1 to 50 MHz
min.
TCL - 3 +
TCL - 7 +
2TCL - 7 +
TCL - 7 +
2TCL - 7 +
3TCL - 7 +
–
–
–
–
0
–
–
2TCL - 7 +
C
t
t
2t
A
A
2t
t
t
t
L
C
C
C
A
A
= 50 pF
max.
–
–
–
–
–
–
2TCL - 15
+
3TCL - 15
+
3TCL - 15
+
4TCL - 20
+ 2
–
2TCL - 5
+
TCL - 5
+
–
t
t
t
t
t
C
C
A
F
F
t
A
+ 2
+ 2
+
+
t
C
t
t
t
A
A
C
2
2
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
59/77
1