MC81F4104 Datasheet, PDF (26/118 Pages) Finechips – ABOV SEMICONDUCTOR

MC81F4104
XIN
XOUT
Figure 7-6 External Clock
7.10 External 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 freque-
ncy Range ⁽¹⁾
fERC
T_A = 25 ^C
1
Accuracy of RC
Oscillation ⁽²⁾
VDD =5.5V, TA = 25 ^C – 6
ACCERC
VDD =5.5V,
– 12
TA = – 10 ^C to + 70 ^C
RC oscillator setup
time ⁽³⁾
tSUERC
T_A = 25 ^C
–
Typ.
–
–
–
–
Max Units
8
MHz
+6
%
+ 12
10
mS
NOTES:
1. The external resistor is connected between V_DD and X_IN pin and the 270pF capacitor is
connected between X_IN and
V pin. (X pin can be used as a normal port). The frequency is adjusted by external
SS
OUT
resistor.
2. The min/max frequencies are within the range of RC OSC frequency (1MHz to 8MHz)
3. Data based on characterization results, not tested in production
V SS
XIN _VDD
270pF R
Figure 7-7 External Clock
26
October 19, 2009 Ver.1.35