C8051F047-GQR Silicon Laboratories Inc, C8051F047-GQR Datasheet - Page 174

• Manufacturer Part Number: C8051F047-GQR
• Description: IC 8051 MCU 32K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F04xr

Specifications of C8051F047-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

C8051F040/1/2/3/4/5/6/7
174
Bits 7-0: OSCICL: Internal Oscillator Calibration Register
Bit7:
Bit6:
Bits5-2:
Bits1-0:
IOSCEN
R/W
R/W
Bit7
Bit7
This register calibrates the internal oscillator period. The reset value for OSCICL defines the
internal oscillator base frequency. The reset value is factory calibrated to generate an inter-
nal oscillator frequency of 24.5 MHz.
IOSCEN: Internal Oscillator Enable Bit.
0: Internal Oscillator Disabled
1: Internal Oscillator Enabled
IFRDY: Internal Oscillator Frequency Ready Flag.
0: Internal Oscillator is not running at programmed frequency.
1: Internal Oscillator is running at programmed frequency.
Reserved.
IFCN1-0: Internal Oscillator Frequency Control Bits.
00: SYSCLK derived from Internal Oscillator divided by 8.
01: SYSCLK derived from Internal Oscillator divided by 4.
10: SYSCLK derived from Internal Oscillator divided by 2.
11: SYSCLK derived from Internal Oscillator divided by 1.
SFR Definition 14.1. OSCICL: Internal Oscillator Calibration
IFRDY
SFR Definition 14.2. OSCICN: Internal Oscillator Control
R/W
R/W
Bit6
Bit6
R/W
R/W
Bit5
Bit5
-
R/W
Bit4
Bit4
R
-
Rev. 1.5
R/W
R/W
Bit3
Bit3
-
R/W
R/W
Bit2
Bit2
-
IFCN1
R/W
R/W
Bit1
Bit1
SFR Address:
SFR Address:
IFCN0
SFR Page:
SFR Page:
R/W
R/W
Bit0
Bit0
0x8A
F
0x8B
F
Reset Value
11000000
Reset Value
Variable