st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 178

• Manufacturer Part Number: st10f272z2
• Description: 16-bit Mcu With 256 Kbyte Flash Memory And 20 Kbyte Ram
• Manufacturer: STMicroelectronics

Electrical characteristics
25.8.18
Table 81.
178/189
t
t
t
t
t
t
t
t
t
t
t
t
29
30
31
32
33
34
35
36
37
58
59
60
Symbol
CC
CC
CC
CC
CC
CC
SR
SR
SR
SR
SR
SR
CLKOUT and READY timings
CLKOUT cycle time
CLKOUT high time
CLKOUT low time
CLKOUT rise time
CLKOUT fall time
CLKOUT rising edge to
ALE falling edge
Synchronous READY
setup time to CLKOUT
Synchronous READY
hold time after CLKOUT
Asynchronous READY
low time
Asynchronous READY
setup time
Asynchronous READY
hold time
Async. READY hold time after
RD, WR high (Demultiplexed
Bus)
CLKOUT and READY
V
1. These timings are given for characterization purposes only, in order to assure recognition at a specific
2. Demultiplexed bus is the worst case. For multiplexed bus 2TCL are to be added to the maximum values.
DD
clock edge.
This adds even more time for deactivating READY. 2t
to the current bus cycle.
= 5 V ± 10%, V
2
Parameter
1
1
SS
= 0 V, T
– 2 + t
A
min.
= -40 to + 125 °C, CL = 50 pF
25
10
17
35
17
9
–
–
2
2
0
F
TCL = 12.5 ns
CPU
A
= 40 MHz
2t
A
8 + t
max.
+ t
A
25
–
4
4
–
–
–
–
–
–
and t
C
A
+ t
C
F
refer to the next following bus cycle, t
2TCL + 10
TCL – 3.5
TCL – 2.5
– 2 + t
1/2 TCL = 1 to 64 MHz
2TCL
min.
Variable CPU Clock
17
17
–
–
2
2
0
A
2t
A
2TCL
8 + t
max.
+ t
–
4
4
–
–
–
–
–
–
C
ST10F272Z2
A
+ t
F
F
refers
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns