C8051F521-IMR Silicon Labs, C8051F521-IMR Datasheet - Page 34

• Manufacturer Part Number: C8051F521-IMR
• Description: 8-bit Microcontrollers - MCU 8KB 12ADC 125C 10Pin MCU
• Manufacturer: Silicon Labs

Specifications of C8051F521-IMR

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Package / Case: DFN-10
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 6
• Interface Type: SPI, UART
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 6
• Number Of Timers: 3
• On-chip Dac: No
• Processor Series: C8051
• Program Memory Type: Flash
• Factory Pack Quantity: 1500
• Supply Voltage - Max: 2.7 V, 5.25 V
• Supply Voltage - Min: 2 V, 2.7 V

C8051F52x/F53x
Table 2.11. Internal Oscillator Electrical Characteristics
V
34
Oscillator Frequency
Oscillator Supply Current
(from V
Wake-Up Time From Sus-
pend
Power Supply Sensitivity
Temperature Sensitivity
Notes:
DD
1. See Section “11.2.1. VDD Monitor Thresholds and Minimum VDD” on page 108 for minimum V
2. VREGMIN is the minimum output of the voltage regulator for its low setting (REG0CN: REG0MD = 0b). See
3. This is the average frequency across the operating temperature range.
4. See “20.7. Internal Oscillator Suspend Mode” on page 212 for ZTCEN setting in older silicon revisions.
5. Use temperature coefficients
= 1.8 to 2.75 V, –40 to +125 °C unless otherwise specified; Using factory-calibrated settings.
where f0 is the internal oscillator frequency at 25 °C and T0 is 25 °C.
requirements.
Table 2.6, “Voltage Regulator Electrical Specifications,” on page 30.
following equation:
DD
Parameter
)
1
5
f(T) = f0 x (1 + TC
IFCN = 111b
VDD > VREGMIN
IFCN = 111b
VDD < VREGMIN
Oscillator On
OSCICN[7:6] = 11b
Oscillator Suspend
OSCICN[7:6] = 00b
ZTCEN = 1
T = 25 °C
T = 85 °C
T = 125 °C
Oscillator Suspend
OSCICN[7:6] = 00b
ZTCEN = 0
T = 25 °C
T = 85 °C
T = 125 °C
OSCICN[7:6] = 00b
ZTCEN = 0
OSCICN[7:6] = 00b
ZTCEN = 1
Constant Temperature
Constant Supply
TC
TC
1
2
TC
Conditions
1
and
4
TC
2
to calculate the new internal oscillator frequency using the
1
2
2
x (T – T0) + TC
Rev. 1.4
24.5 – 0.5%
24.5 – 1.0%
Min
—
—
—
—
—
—
—
—
—
—
—
—
2
x (T – T0)
–0.65
24.5
24.5
0.10
Typ
800
117
5.0
67
77
50
—
2
3
5
2
3
3
)
24.5 + 0.5%
24.5 + 1.0%
1100
Max
300
—
—
—
—
—
—
—
—
—
1
DD
Instruction
ppm/°C
ppm/°C
Cycles
Units
MHz
%/V
µA
µA
µA
µA
µA
µA
µA
µs
2