C8051F544-IQR Silicon Labs, C8051F544-IQR Datasheet - Page 53

• Manufacturer Part Number: C8051F544-IQR
• Description: 8-bit Microcontrollers - MCU 50 MIPS 8 kB 1kB LIN 2.1 SPI UART I2C
• Manufacturer: Silicon Labs

Specifications of C8051F544-IQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

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. VREGMIN is the minimum output of the voltage regulator for its low setting (REG0CN: REG0MD = 0b). See
2. This is the average frequency across the operating temperature range
3. Use temperature coefficients
= 1.8 to 2.75 V, –40 to +125 °C unless otherwise specified; Using factory-calibrated settings.
Table 6.8, “Voltage Regulator Electrical Characteristics,” on page 54.
following equation:
where f0 is the internal oscillator frequency at 25 °C and T0 is 25 °C.
DD
Parameter
)
3
f(T) = f0 x (1 + TC
IFCN = 111b;
VDD > VREGMIN
IFCN = 111b;
VDD < VREGMIN
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. 1.1
1
1
24
24
2
Min
–
–
x (T - T0)
—
—
—
—
—
—
0.5%
1.0%
–0.65
2
0.11
Typ
24
24
880
130
5.0
67
90
)
1
2
2
C8051F54x
24 + 0.5%
24 + 1.0%
1300
Max
—
—
—
—
—
ppm/°C
ppm/°C
Units
MHz
%/V
µA
µs
2
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