c8051f544 Silicon Laboratories, c8051f544 Datasheet - Page 53
c8051f544
Manufacturer Part Number
c8051f544
Description
Mixed Signal Isp Flash Mcu Family
Manufacturer
Silicon Laboratories
Datasheet
1.C8051F544.pdf
(274 pages)
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Table 6.6. Internal High-Frequency Oscillator Electrical Characteristics
V
Oscillator Frequency
Oscillator Supply Current
(from V
Internal Oscillator Suspend
OSCICN[7:6] = 00b
ZTCEN = 1
Wake-up Time From Suspend OSCICN[7:6] = 00b
Power Supply Sensitivity
Temperature Sensitivity
DD
1. This is the average frequency across the operating temperature range
2. Use temperature coefficients
= 1.8 to 2.75 V, –40 to +125 °C unless otherwise specified; Using factory-calibrated settings.
following equation:
where f0 is the internal oscillator frequency at 25 °C and T0 is 25 °C.
DD
Figure 6.2. Typical Internal High-Frequency Oscillator Over Temperature
Parameter
)
2
f(T) = f0 x (1 + TC
IFCN = 111b;
Internal Oscillator On
OSCICN[7:6] = 11b
Temp = 25 °C
Temp = 85 °C
Temp = 125 °C
Constant Temperature
Constant Supply
TC
TC
TC
1
2
1
and
Conditions
TC
2
to calculate the new internal oscillator frequency using the
1
x (T - T0) + TC
Rev. 1.0
24
2
Min
–
x (T - T0)
—
—
—
—
—
—
0.5%
–0.65
2
0.11
Typ
24
880
130
5.0
67
90
)
1
1
C8051F54x
24 + 0.5%
1300
Max
—
—
—
—
—
ppm/°C
ppm/°C
Units
MHz
%/V
µA
µs
2
53
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