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SN8F2250B 参数 Datasheet PDF下载

SN8F2250B图片预览
型号: SN8F2250B
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: 133 页 / 1554 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
 浏览型号SN8F2250B的Datasheet PDF文件第80页浏览型号SN8F2250B的Datasheet PDF文件第81页浏览型号SN8F2250B的Datasheet PDF文件第82页浏览型号SN8F2250B的Datasheet PDF文件第83页浏览型号SN8F2250B的Datasheet PDF文件第85页浏览型号SN8F2250B的Datasheet PDF文件第86页浏览型号SN8F2250B的Datasheet PDF文件第87页浏览型号SN8F2250B的Datasheet PDF文件第88页  
SN8F2250B Series  
USB 2.0 Full-Speed 8-Bit Micro-Controller  
8.4.3 TC0C COUNTING REGISTER  
TC0C is an 8-bit counter register for TC0 interval time control.  
089H  
TC0C  
Read/Write  
After reset  
Bit 7  
TC0C7  
R/W  
0
Bit 6  
TC0C6  
R/W  
0
Bit 5  
TC0C5  
R/W  
0
Bit 4  
TC0C4  
R/W  
0
Bit 3  
TC0C3  
R/W  
0
Bit 2  
TC0C2  
R/W  
0
Bit 1  
TC0C1  
R/W  
0
Bit 0  
TC0C0  
R/W  
0
The equation of TC0C initial value is as following.  
TC0C initial value = N - (TC0 interrupt interval time * input clock)  
N is TC0 overflow boundary number. TC0 timer overflow time has six types (TC0 timer, TC0 event counter, TC0 Fcpu  
clock source, TC0 Fosc clock source, PWM mode and no PWM mode). These parameters decide TC0 overflow time  
and valid value as follow table.  
TC0C valid  
value  
TC0C value  
binary type  
TC0CKS PWM0 ALOAD0 TC0OUT  
Remark  
N
0
1
1
1
1
-
x
0
0
1
1
-
x
0
1
0
1
-
256  
256  
64  
32  
16  
0x00~0xFF 00000000b~11111111b  
0x00~0xFF 00000000b~11111111b  
Overflow per 256 count  
Overflow per 256 count  
Overflow per 64 count  
Overflow per 32 count  
Overflow per 16 count  
Overflow per 256 count  
0
1
0x00~0x3F  
0x00~0x1F  
0x00~0x0F  
xx000000b~xx111111b  
xxx00000b~xxx11111b  
xxxx0000b~xxxx1111b  
256  
0x00~0xFF 00000000b~11111111b  
¾
Example: To set 1ms interval time for TC0 interrupt. TC0 clock source is Fcpu (TC0KS=0) and no PWM  
output (PWM0=0). High clock is internal 6MHz. Fcpu=Fosc/1. Select TC0RATE=010 (Fcpu/64).  
TC0C initial value = N - (TC0 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 TC0.  
High speed mode (Fcpu = 6MHz / 1)  
TC0RATE TC0CLOCK  
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 84  
Version 1.1  
 
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