C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 49

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

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

Table 5.6. 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 5.8, “Voltage Regulator Electrical Characteristics,” on page 50
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. 1.2
1
1
24
24
2
Min
–
–
x (T – T0)
—
—
—
—
—
—
—
—
0.5%
1.0%
C8051F58x/F59x
–0.65
0.13
Typ
24
24
880
300
320
400
2
5.0
)
1
2
2
24 + 0.5%
24 + 1.0%
1300
Max
—
—
—
—
—
—
—
ppm/°C
ppm/°C
Units
MHz
%/V
µA
µA
µs
2
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