C8051F537-IM Silicon Laboratories Inc, C8051F537-IM Datasheet - Page 137

• 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

SFR Definition 14.2. OSCICL: Internal Oscillator Calibration
SFR Definition 14.3. OSCIFIN: Internal Fine Oscillator Calibration
Bit7:
Bits6–0: OSCICL: Internal Oscillator Calibration Register.
Bits7–6: UNUSED. Read = 00b, Write = don't care.
Bits5–0: OSCIFIN. Internal oscillator fine adjustment bits.
R/W
Bit7
—
Bit7
—
R
UNUSED. Read = 0b. Write = don’t care.
This register determines the internal oscillator period. On C8051F52x/53x devices, the reset
value is factory calibrated to generate an internal oscillator frequency of 24.5 MHz.
The valid range is between 0x00 and 0x27.
This register is a fine adjustment for the internal oscillator period. On
C8051F52x/52xA/53x/53xA devices, the reset value is factory calibrated to generate an
R/W
Bit6
—
R/W
Bit6
R/W
Bit5
R/W
Bit5
Bit4
R/W
Bit4
R
C8051F52x/F52xA/F53x/F53xA
OSCICL
Rev. 1.3
Bit3
R/W
Bit3
R
OSCIFIN
R/W
Bit2
R/W
Bit2
R/W
Bit1
R/W
Bit1
SFR Address:
SFR Address:
R/W
Bit0
R/W
Bit0
undetermined
Bit Addressable
Reset Value
Reset Value
Varies
0xB0
0xB3
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