C8051F572-IMR Silicon Labs, C8051F572-IMR Datasheet - Page 158
C8051F572-IMR
Manufacturer Part Number
C8051F572-IMR
Description
8-bit Microcontrollers - MCU 50 MIPS 16 kB 2 kB CAN2.0 LIN 2.1 SPI
Manufacturer
Silicon Labs
Datasheet
1.C8051F556-IMR.pdf
(302 pages)
Specifications of C8051F572-IMR
Rohs
yes
Core
8051
Data Bus Width
8 bit
Processor Series
C8051
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C8051F55x/56x/57x
SFR Definition 18.2. OSCICN: Internal Oscillator Control
SFR Address = 0xA1; SFR Page = 0x0F
158
Name
Reset
7:6 IOSCEN[1:0] Internal Oscillator Enable Bits.
2:0
Bit
Type
5
4
3
Bit
SUSPEND
Reserved
IFCN[2:0]
IFRDY
Name
R/W
7
1
IOSCEN[1:0]
00: Oscillator Disabled.
01: Reserved.
10: Reserved.
11: Oscillator enabled in normal mode and disabled in suspend mode.
Internal Oscillator Suspend Enable Bit.
Setting this bit to logic 1 places the internal oscillator in SUSPEND mode. The inter-
nal oscillator resumes operation when one of the SUSPEND mode awakening
events occurs.
Internal Oscillator Frequency Ready Flag.
0: Internal oscillator is not running at programmed frequency.
1: Internal oscillator is running at programmed frequency.
Read = 0b; Must Write = 0b.
Internal Oscillator Frequency Divider Control Bits.
000: SYSCLK derived from Internal Oscillator divided by 128.
001: SYSCLK derived from Internal Oscillator divided by 64.
010: SYSCLK derived from Internal Oscillator divided by 32.
011: SYSCLK derived from Internal Oscillator divided by 16.
100: SYSCLK derived from Internal Oscillator divided by 8.
101: SYSCLK derived from Internal Oscillator divided by 4.
110: SYSCLK derived from Internal Oscillator divided by 2.
111: SYSCLK derived from Internal Oscillator divided by 1.
R/W
6
1
SUSPEND
R/W
5
0
IFRDY
Rev. 1.1
R
4
1
Function
Reserved
R
3
0
2
0
IFCN[2:0]
R/W
1
0
0
0
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