欢迎访问ic37.com |
会员登录 免费注册
发布采购

7906 参数 Datasheet PDF下载

7906图片预览
型号: 7906
PDF下载: 下载PDF文件 查看货源
内容描述: 16位单片机 [16-BIT SINGLE-CHIP MICROCOMPUTER]
分类和应用: 计算机
文件页数/大小: 531 页 / 3056 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
 浏览型号7906的Datasheet PDF文件第430页浏览型号7906的Datasheet PDF文件第431页浏览型号7906的Datasheet PDF文件第432页浏览型号7906的Datasheet PDF文件第433页浏览型号7906的Datasheet PDF文件第435页浏览型号7906的Datasheet PDF文件第436页浏览型号7906的Datasheet PDF文件第437页浏览型号7906的Datasheet PDF文件第438页  
APPENDIX  
Appendix 2. Control registers  
b7 b6 b5 b4 b3 b2 b1 b0  
Processor mode register 0 (Address 5E16)  
0
0
X X  
0
Bit  
0
Bit name  
Function  
At reset  
R/W  
RW  
Reference  
b1 b0  
2-20  
Processor mode bits  
0
0 0 : Single-chip mode  
0 1 : Do not select.  
1 0 : Do not select.  
1 1 : Do not select.  
0
1
RW  
2
3
4
Any of these bits may be either “0” or “1.”  
0
1
0
RW  
RW  
RW  
b5 b4  
6-12  
3-3  
Interrupt priority detection time  
select bits  
0 0 : 7 cycles of fsys  
0 1 : 4 cycles of fsys  
1 0 : 2 cycles of fsys  
1 1 : Do not select.  
5
RW  
WO  
RW  
0
0
0
The microcomputer is reset by writing “1” to this  
bit. The value is “0” at reading.  
Software reset bit  
Fix this bit to “0.”  
6
7
X : It may be either “0” or “1.”  
b7 b6 b5 b4 b3 b2 b1 b0  
Processor mode register 1 (Address 5F16)  
0 0 0 0  
0
X
Bit  
0
Bit name  
Function  
At reset  
R/W  
Reference  
1
RW  
This bit may be either “0” or “1.”  
Direct page register switch bit  
2-6  
0 : Only DPR0 is used.  
1 : DPR0 through DPR3 are used.  
0
RW  
(Note 1)  
1
Fix these bits to “00000.”  
0
0
RW  
RW  
6 to 2  
7
2-12  
0 : 3φ  
1 : 2φ  
Internal ROM bus cycle select bit  
(Note 2)  
X : It may be either “0” or “1.”  
Notes 1: After reset, this bit is allowed to be changed only once. (During the software execution, be sure not to change this bit’s  
content.)  
2: To reprogram the internal flash memory by using the CPU reprogramming mode, clear this bit to “0.” (Refer to section  
“19.2 Flash memory CPU reprogramming mode.”)  
7906 Group User’s Manual Rev.2.0  
20-29  
 复制成功!