C8051F305-GMR Silicon Laboratories Inc, C8051F305-GMR Datasheet - Page 98
C8051F305-GMR
Manufacturer Part Number
C8051F305-GMR
Description
IC 8051 MCU 2K FLASH 11QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F30xr
Specifications of C8051F305-GMR
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
8
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
11-VQFN
For Use With
336-1444 - ADAPTER PROGRAM TOOLSTICK F300
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F305-GMR
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
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C8051F300/1/2/3/4/5
98
Bit7:
Bits 6–0: OSCICL: Internal Oscillator Calibration Register.
Bits7–5: UNUSED. Read = 000b, Write = don't care.
Bit4:
Bit3:
Bit2:
Bits1–0: IFCN1-0: Internal Oscillator Frequency Control Bits.
R/W
R/W
Bit7
Bit7
—
—
UNUSED. Read = 0. Write = don’t care.
This register calibrates the internal oscillator period. The reset value for OSCICL defines the
internal oscillator base frequency. On C8051F300/1 devices, the reset value is factory cali-
brated to generate an internal oscillator frequency of 24.5 MHz.
IFRDY: Internal Oscillator Frequency Ready Flag.
0: Internal Oscillator is not running at programmed frequency.
1: Internal Oscillator is running at programmed frequency.
CLKSL: System Clock Source Select Bit.
0: SYSCLK derived from the Internal Oscillator, and scaled as per the IFCN bits.
1: SYSCLK derived from the External Oscillator circuit.
IOSCEN: Internal Oscillator Enable Bit.
0: Internal Oscillator Disabled.
1: Internal Oscillator Enabled.
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 11.1.
R/W
R/W
Bit6
Bit6
SFR Definition 11.2.
—
R/W
R/W
Bit5
Bit5
—
IFRDY
R/W
Bit4
Bit4
R
OSCICL: Internal Oscillator Calibration
OSCICN: Internal Oscillator Control
CLKSL
Rev. 2.9
R/W
Bit3
R/W
Bit3
IOSCEN
R/W
Bit2
R/W
Bit2
IFCN1
R/W
Bit1
R/W
Bit1
IFCN0
R/W
Bit0
R/W
Bit0
SFR Address:
SFR Address:
00010100
Reset Value
Reset Value
Variable
0xB2
0xB3
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