MC81F4104 Datasheet, PDF (27/118 Pages) Finechips – ABOV SEMICONDUCTOR

7.11 Internal RC Oscillation Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Parameter
Symbol
Conditions
Min
RC oscillator
frequency (1)
fIRC
VDD =5.5V, TA = 25 ^C -4%
VDD =5.5V,
-20%
TA = – 40 ^C to + 85 ^C
Clock duty ratio
TOD
–
40
RC oscillator setup
time ⁽²⁾
tSUIRC
TA = 25 ^C
–
Typ.
8.0
8.0
50
–
MC81F4104
Max
4%
20%
Units
MHz
60
%
10
mS
NOTES:
1. Data based on characterization results, not tested in production
2. X_IN and X_OUT pins can be used as I/O ports.
7.12 Main Oscillation Stabilization Time
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Oscillator
Conditions
Min
Crystal
Ceramic
fx > 1 MHz
–
Oscillation stabilization occurs when
VDD is equal to the minimum
–
oscillator voltage range.
External Clock ^{XIN input high and low width (tXH, tXL)} 40.0
Typ.
–
–
–
Max Units
60
mS
10
mS
480
nS
1 / fx
t XL
tXH
XIN
0.8VDD
0.2VDD
Figure 7-8 Clock Timing Measurement at XIN
October 19, 2009 Ver.1.35
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