ST10F272B_12 STMICROELECTRONICS [STMicroelectronics], ST10F272B_12 Datasheet - Page 176
ST10F272B_12
Manufacturer Part Number
ST10F272B_12
Description
16-bit MCU with 256 Kbyte Flash memory and 12/20 Kbyte RAM
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST10F272B_12.pdf
(188 pages)
- Current page: 176 of 188
- Download datasheet (3Mb)
Electrical characteristics
24.8.18
Table 80.
176/188
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 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
CLKOUT and READY timings
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.
= 5V ± 10%, V
2
Parameter
1
1
SS
= 0V, T
A
Doc ID 11917 Rev 3
– 2 + t
= -40 to + 125°C, CL = 50pF
min.
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
2TCL
1/2 TCL = 1 to 64MHz
min.
Variable CPU Clock
17
17
–
–
2
2
0
A
ST10F272B/ST10F272E
2t
A
2TCL
8 + t
max.
+ t
–
–
4
4
–
–
–
–
–
C
A
+ t
F
F
refers
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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