C8051F537-IM Silicon Laboratories Inc, C8051F537-IM Datasheet - Page 34

• Manufacturer Part Number: C8051F537-IM
• Description: IC 8051 MCU 2K FLASH 20QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F53xr

Specifications of C8051F537-IM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.25 V
• Data Converters: A/D 16x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-QFN
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 16 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1400

C8051F52x/F52xA/F53x/F53xA
Table 2.10. 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. 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. Use factory-calibrated settings.
where f0 is the internal oscillator frequency at 25 °C and T0 is 25 °C.
Table 2.5, “Voltage Regulator Electrical Specifications,” on page 30.
following equation:
DD
Parameter
)
3
f(T) = f0 x (1 + TC
IFCN = 11b
VDD > VREGMIN
IFCN = 11b
VDD < VREGMIN
Internal Oscillator On
OSCICN[7:6] = 11b
Internal Oscillator
Suspend
OSCICN[7:6] = 00b
ZTCEN = 1
Internal Oscillator 
Suspend
OSCICN[7:6] = 00b
ZTCEN = 0
OSCICN[7:6] = 00b
ZTCEN = 0
OSCICN[7:6] = 00b
ZTCEN = 1
Constant Temperature
Constant Supply
TC
TC
1
2
TC
Conditions
1
and
TC
2
to calculate the new internal oscillator frequency using the
1
1
1
x (T – T0) + TC
Rev. 1.3
24.5 – 0.5%
24.5 – 1.0%
Min
—
—
—
—
—
—
—
—
2
x (T – T0)
–0.65
24.5
24.5
0.10
Typ
800
5.0
90
1
1
5
2
2
2
)
24.5 + 0.5%
24.5 + 1.0%
1100
Max
400
—
—
—
—
—
—
Instruction
ppm/°C
ppm/°C
Cycles
Units
MHz
%/V
µA
µA
µA
µs
2