MC81F4332 Datasheet, PDF (39/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4x16
7.12 Main clock Oscillator Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Oscillator
Parameter
Conditions
Min
Typ.
Max Units
2.2 V – 5.5 V
1.0
–
4.2
Crystal
Main oscillation frequency 2.7 V – 5.5 V
1.0
–
8.0 MHz
4.0 V – 5.5 V
1.0
–
12.0
2.2 V – 5.5 V
1.0
Ceramic
Oscillator
Main oscillation frequency
2.7 V – 5.5 V
1.0
4.0 V – 5.5 V
1.0
–
4.2
–
8.0 MHz
–
12.0
External
Clock
X_IN input frequency
2.2 V – 5.5 V
1.0
2.7 V – 5.5 V
1.0
4.0 V – 5.5 V
1.0
–
4.2
–
8.0 MHz
–
12.0
7.13 External RC Oscillation Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Parameter
Symbol
Conditions
RC oscillator frequency
Range ⁽¹⁾
fERC
T_A = 25^C
Accuracy of RC
Oscillation ⁽²⁾
ACCERC
VDD =5.5V, T_A = 25^C
VDD =5.5V,
T_A = – 40 ^C to + 85^C
RC oscillator setup time ⁽³⁾ tSUERC
T_A = 25^C
Min
1
–6
– 12
–
Typ.
–
–
–
–
Max Units
8 MHz
+6
%
+ 12
10 mS
Note :
1. The external resistor is connected between V_DD and X_IN pin and the 270pF capacitor is
connected
between
X_IN
and
V
SS
pin.
(X
OUT
pin
can
be
used
as
a
normal
port).
The
frequency
is adjusted by external 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
October 19, 2009 Ver.1.35
39