ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 256

• Manufacturer Part Number: ST7FMC1K2B3
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST7MC1xx/ST7MC2xx
12.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
12.5.1 General Timings
Notes:
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch. Δt
the current instruction execution.
12.5.2 External Clock Source
Figure 135. Typical Application with an External Clock Source
Notes:
1. Data based on design simulation and/or technology characteristics, not tested in production.
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t
t
Symbol
Symbol
w(OSC1H)
V
w(OSC1L)
V
t
t
t
r(OSC1)
f(OSC1)
c(INST)
OSC1H
OSC1L
t
v(IT)
I
L
V
V
Instruction cycle time
Interrupt reaction time
t
OSC1 input pin high level voltage
OSC1 input pin low level voltage
OSC1 high or low time
OSC1 rise or fall time
OSCx Input leakage current
OSC1H
OSC1L
v(IT)
EXTERNAL
CLOCK SOURCE
= Δt
c(INST)
Parameter
Parameter
+ 10
t
r(OSC1)
1)
2)
1)
V
DD
t
f(OSC1)
OSC2
OSC1
90%
f
f
see
V
DD
CPU
CPU
SS
10%
, f
≤ V
Figure 135
=8MHz
=8MHz
OSC
IN
Conditions
≤ V
Conditions
DD
, and T
t
w(OSC1H)
A
.
c(INST)
is the number of t
I
L
t
w(OSC1L)
1.25
0.7xV
Min
250
10
2
Min
V
25
SS
f
DD
OSC
Typ
ST7FMC
375
Typ
3
CPU
1)
cycles needed to finish
0.3xV
1500
Max
2.75
Max
12
22
V
± 1
DD
5
DD
Unit
Unit
t
t
CPU
CPU
ns
μs
μA
ns
V