C8051F007 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

MFG CO.

C8051F007

Mixed-Signal 32KB ISP FLASH MCU Family

Silicon Laboratories 

C8051F000/1/2/5/6/7

C8051F010/1/2/5/6/7

Figure 14.2. OSCICN: Internal Oscillator Control Register

R/W

R/W

MSCLKE

-

Bit7

Bit6

R/W

R

R/W

R/W

R/W

R/W

-

IFRDY

CLKSL IOSCEN

IFCN1

IFCN0

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Bit7: MSCLKE: Missing Clock Enable Bit

0: Missing Clock Detector Disabled

1: Missing Clock Detector Enabled; triggers a reset if a missing clock is detected

Bits6-5: UNUSED. Read = 00b, Write = don’t care

Bit4: IFRDY: Internal Oscillator Frequency Ready Flag

0: Internal Oscillator Frequency not running at speed specified by the IFCN bits.

1: Internal Oscillator Frequency running at speed specified by the IFCN bits.

Bit3: CLKSL: System Clock Source Select Bit

0: Uses Internal Oscillator as System Clock.

1: Uses External Oscillator as System Clock.

Bit2: IOSCEN: Internal Oscillator Enable Bit

0: Internal Oscillator Disabled

1: Internal Oscillator Enabled

Bits1-0: IFCN1-0: Internal Oscillator Frequency Control Bits

00: Internal Oscillator typical frequency is 2MHz.

01: Internal Oscillator typical frequency is 4MHz.

10: Internal Oscillator typical frequency is 8MHz.

11: Internal Oscillator typical frequency is 16MHz.

Reset Value

00000100

SFR Address:

0xB2

Table 14.1. Internal Oscillator Electrical Characteristics

-40°C to +85°C unless otherwise specified.

PARAMETER

CONDITIONS

Internal Oscillator

OSCICN.[1:0] = 00

Frequency

OSCICN.[1:0] = 01

OSCICN.[1:0] = 10

OSCICN.[1:0] = 11

Internal Oscillator Current OSCICN.2 = 1

Consumption (from VDD)

Internal Oscillator

Temperature Stability

Internal Oscillator Power

Supply (VDD) Stability

MIN

1.5

3.1

6.2

12.3

TYP

2

4

8

16

200

4

6.4

MAX

2.4

4.8

9.6

19.2

UNITS

MHz

µA

ppm/°C

%/V

Rev. 1.7

100

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