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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 TIMER 0 (T0)  
8.2.1 OVERVIEW  
The T0 is an 8-bit binary up timer and event counter. If T0 timer occurs an overflow (from FFH to 00H), it will continue  
counting and issue a time-out signal to trigger T0 interrupt to request interrupt service.  
The main purpose of the T0 timer is as following.  
)
)
8-bit programmable up counting timer: Generates interrupts at specific time intervals based on the selected  
clock frequency.  
Green mode wakeup function: T0 can be green mode wake-up time as T0ENB = 1. System will be wake-up by  
T0 time out.  
T0 Rate  
(Fcpu/2~Fcpu/256)  
T0ENB  
Internal Data Bus  
Load  
Fcpu  
T0C 8-Bit Binary Up Counting Counter  
T0 Time Out  
CPUM0,1  
8.2.2 T0M MODE REGISTER  
0D8H  
T0M  
Read/Write  
After reset  
Bit 7  
T0ENB  
R/W  
0
Bit 6  
T0rate2  
R/W  
Bit 5  
T0rate1  
R/W  
Bit 4  
T0rate0  
R/W  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
-
-
-
-
-
-
-
-
-
0
0
0
Bit [6:4] T0RATE[2:0]: T0 internal clock select bits.  
000 = fcpu/256.  
001 = fcpu/128.  
110 = fcpu/4.  
111 = fcpu/2.  
Bit 7  
T0ENB: T0 counter control bit.  
0 = Disable T0 timer.  
1 = Enable T0 timer.  
SONiX TECHNOLOGY CO., LTD  
Page 69  
Version 1.2