ST10R272L STMicroelectronics, ST10R272L Datasheet - Page 54

• 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

ST10R272L - ELECTRICAL CHARACTERISTICS
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1
Parameter
RdCS to Valid Data In
(with RW delay)
RdCS to Valid Data In
(no RW delay)
RdCS, WrCS Low Time
(with RW delay)
RdCS, WrCS Low Time
(no RW delay)
Data valid to WrCS
Data hold after RdCS
Data float after RdCS
Address hold after
RdCS, WrCS
Data hold after WrCS
1) Output loading is specified using Figure 13 (CL = 5 pF).
2) This delay assumes that the following bus cycle is a multiplexed bus cycle. If next bus cycle
is demultiplexed, refer to demuxultiplexed equivalent AC timing.
1 2
Symbol
t
t
t
t
t
t
t
t
t
46
47
48
49
50
51
52
54
56
SR –
SR –
CC 13 +
CC 23 +
CC 10 +
SR 0
SR –
CC 10 +
CC 10 +
Table 17 Multiplexed bus
Max. CPU Clock
= 50 MHz
min.
t
t
t
t
t
C
C
C
F
F
max.
3 +
13 +
–
–
–
–
13 +
–
–
t
C
t
t
C
F
2
Variable CPU Clock
1/2TCL = 1 to 50 MHz
min.
–
–
2TCL - 7+
3TCL - 7+
2TCL - 10 +
0
–
2TCL - 10 +
2TCL - 10 +
t
t
C
C
t
t
t
C
F
F
max.
2TCL - 17
+
3TCL - 17
+
–
–
–
–
2TCL - 7 +
–
–
t
t
C
C
t
F
2
ns
ns
ns
ns
ns
ns
ns
ns
ns