MC81F4332 Datasheet, PDF (40/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4x16
7.14 Internal 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 (1)
fIRC
VDD =5.5V, T_A = 25^C
VDD =5.5V,
T_A = – 40^C to + 85^C
Clock duty ratio
TOD
–
RC oscillator setup
time ⁽²⁾
tSUIRC
T_A = 25^C
Min
-4%
-20%
Typ.
8.0
8.0
Max Units
4%
MHz
20%
40
50
60
%
–
–
10 mS
Note :
1. Data based on characterization results, not tested in production
2. XIN and XOUT pins can be used as I/O ports.
7.15 Sub clock Oscillator Characteristics
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Oscillator
Parameter
Conditions
Crystal
Sub oscillation frequency 2.2 V – 5.5 V
External Clock
SX_IN input frequency
2.2 V – 5.5 V
Min
Typ.
Max Units
32 32.768 35 KHz
32
–
100 KHz
7.16 Main Oscillation Stabilization Time
(T_A = - 40 ^C to + 85^C, V_DD = 2.2 V to 5.5 V)
Oscillator
Conditions
Min
Typ.
Max Units
Crystal
Ceramic
fx > 1 MHz
–
Oscillation stabilization occurs when
V_DD is equal to the minimum
–
oscillator voltage range.
–
60
mS
–
10
mS
External Clock
X_IN input high and low width (t_XH, t_XL)
40.0
–
480
nS
40
October 19, 2009 Ver.1.35