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SN8F22711B 参数 Datasheet PDF下载

SN8F22711B图片预览
型号: SN8F22711B
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-Bit Micro-Controller]
分类和应用: 微控制器
文件页数/大小: 111 页 / 1291 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN8F2270B Series  
USB 2.0 Low-Speed 8-Bit Micro-Controller  
8.2.3 T0C COUNTING REGISTER  
T0C is an 8-bit counter register for T0 interval time control.  
0D9H  
T0C  
Read/Write  
After reset  
Bit 7  
T0C7  
R/W  
0
Bit 6  
T0C6  
R/W  
0
Bit 5  
T0C5  
R/W  
0
Bit 4  
T0C4  
R/W  
0
Bit 3  
T0C3  
R/W  
0
Bit 2  
T0C2  
R/W  
0
Bit 1  
T0C1  
R/W  
0
Bit 0  
T0C0  
R/W  
0
The equation of T0C initial value is as following.  
T0C initial value = 256 - (T0 interrupt interval time * input clock)  
Example: To set 1ms interval time for T0 interrupt. High clock is 6MHz. Fcpu=Fosc/1. Select T0RATE=010  
(Fcpu/64).  
T0C initial value = 256 - (T0 interrupt interval time * input clock)  
= 256 - (1ms * 6MHz / 1 / 64)  
= 256 - (10-3 * 6 * 106 / 1 / 64)  
= 162  
= A2H  
The basic timer table interval time of T0.  
High speed mode (Fcpu = 6MHz)  
T0RATE  
T0CLOCK  
Max overflow interval One step = max/256  
000  
001  
010  
011  
100  
101  
110  
111  
Fcpu/256  
Fcpu/128  
Fcpu/64  
Fcpu/32  
Fcpu/16  
Fcpu/8  
10.923 ms  
5.461 ms  
2.731 ms  
1.365 ms  
0.683 ms  
0.341 ms  
0.171 ms  
0.085 ms  
42.67 us  
21.33 us  
10.67 us  
5.33 us  
2.67 us  
1.33 us  
0.67 us  
0.33 us  
Fcpu/4  
Fcpu/2  
SONiX TECHNOLOGY CO., LTD  
Page 70  
Version 1.2