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C8051F502-IM 参数 Datasheet PDF下载

C8051F502-IM图片预览
型号: C8051F502-IM
PDF下载: 下载PDF文件 查看货源
内容描述: 混合信号ISP功能的Flash MCU系列 [Mixed Signal ISP Flash MCU Family]
分类和应用: 微控制器和处理器外围集成电路PC时钟
文件页数/大小: 312 页 / 2813 K
品牌: SILICON [ SILICON ]
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C8051F50x-F51x  
SFR Definition 19.2. OSCICN: Internal Oscillator Control  
Bit  
7
6
5
4
3
2
1
0
IOSCEN[1:0]  
R/W R/W  
SUSPEND  
IFRDY  
Reserved  
IFCN[2:0]  
Name  
Type  
Reset  
R/W  
0
R
1
R
0
R/W  
0
1
1
0
0
SFR Address = 0xA1; SFR Page = 0x0F;  
Bit Name  
Function  
7:6 IOSCEN[1:0] Internal Oscillator Enable Bits.  
00: Oscillator Disabled.  
01: Reserved.  
10: Reserved.  
11: Oscillator enabled in normal mode and disabled in suspend mode.  
5
4
SUSPEND 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.  
IFRDY  
Internal Oscillator Frequency Ready Flag.  
0: Internal oscillator is not running at programmed frequency.  
1: Internal oscillator is running at programmed frequency.  
3
Reserved Read = 0b; Must Write = 0b.  
2:0  
IFCN[2:0] 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.  
168  
Rev. 1.1