C8051F800DK Silicon Laboratories Inc, C8051F800DK Datasheet - Page 134
C8051F800DK
Manufacturer Part Number
C8051F800DK
Description
KIT DEV C8051F800
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F800DK
Contents
Board, Cables, CD, Debugger, Power Supply
Processor To Be Evaluated
C8051F800
Data Bus Width
16 bit
Interface Type
USB
Operating Supply Voltage
7 V to 15 V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F8xx
Lead Free Status / Rohs Status
Supplier Unconfirmed
Other names
336-1797
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C8051F80x-83x
SFR Definition 22.4. OSCXCN: External Oscillator Control
SFR Address = 0xB1
134
Name
Reset
6:4
2:0
Bit
Type
7
3
Bit
XOSCMD[2:0] External Oscillator Mode Select.
XFCN[2:0]
XTLVLD
XTLVLD
Unused
Name
R
7
0
Crystal Oscillator Valid Flag.
(Read only when XOSCMD = 11x.)
0: Crystal Oscillator is unused or not yet stable.
1: Crystal Oscillator is running and stable.
00x: External Oscillator circuit off.
010: External CMOS Clock Mode.
011: External CMOS Clock Mode with divide by 2 stage.
100: RC Oscillator Mode.
101: Capacitor Oscillator Mode.
110: Crystal Oscillator Mode.
111: Crystal Oscillator Mode with divide by 2 stage.
Read = 0; Write = Don’t Care
External Oscillator Frequency Control Bits.
Set according to the desired frequency for Crystal or RC mode.
Set according to the desired K Factor for C mode.
XFCN
000
001
010
100
101
011
110
111
6
0
XOSCMD[2:0]
590 kHz f 1.5 MHz
225 kHz f 590 kHz
10 MHz f 30 MHz
84 kHz f 225 kHz
1.5 MHz f 4 MHz
4 MHz f 10 MHz
32 kHz f 84 kHz
Crystal Mode
R/W
5
0
f 32 kHz
Rev. 1.0
4
0
100 kHz f 200 kHz
400 kHz f 800 kHz
800 kHz f 1.6 MHz
1.6 MHz f 3.2 MHz
200 kHz f 400 kHz
50 kHz f 100 kHz
25 kHz f 50 kHz
Function
R
3
0
f 25 kHz
RC Mode
2
0
XFCN[2:0]
K Factor = 1590
K Factor = 0.87
R/W
K Factor = 180
K Factor = 664
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
1
0
C Mode
0
0
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