C8051F510-IMR Silicon Labs, C8051F510-IMR Datasheet - Page 173
C8051F510-IMR
Manufacturer Part Number
C8051F510-IMR
Description
8-bit Microcontrollers - MCU 50 MIPS 32 kB 4 kB CAN2.0 LIN 2.1 SPI
Manufacturer
Silicon Labs
Datasheet
1.C8051F510-IMR.pdf
(312 pages)
Specifications of C8051F510-IMR
Rohs
yes
Core
8051
Data Bus Width
8 bit
Processor Series
C8051
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SFR Definition 19.6. OSCXCN: External Oscillator Control
SFR Address = 0x9F; SFR Page = 0x0F;
Reset
Name
Bit
6:4 XOSCMD[2:0] External Oscillator Mode Select.
2:0
Type
7
3
Bit
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 = 0b; Write =0b
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
011
100
101
110
111
0
6
XOSCMD[2:0]
Crystal Mode
f 32 kHz
32 kHz f 84 kHz
84 kHz f 225 kHz
225 kHz f 590 kHz 100 kHz f 200 kHz
590 kHz f 1.5 MHz 200 kHz f 400 kHz
1.5 MHz f 4 MHz
4 MHz f 10 MHz
10 MHz f 30 MHz
R/W
5
0
Rev. 1.2
4
0
RC Mode
f 25 kHz
25 kHz f 50 kHz
50 kHz f 100 kHz
400 kHz f 800 kHz
800 kHz f 1.6 MHz
1.6 MHz f 3.2 MHz
Function
R
3
0
C8051F50x/F51x
2
0
C Mode
K Factor = 0.87
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
K Factor = 180
K Factor = 664
K Factor = 1590
XFCN[2:0]
R/W
1
0
0
0
173
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