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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 ]
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APPENDIX  
Appendix 2. Control registers  
One-shot pulse mode  
Timer A0 register (Addresses 4716, 4616)  
Timer A1 register (Addresses 4916, 4816)  
Timer A2 register (Addresses 4B16, 4A16)  
Timer A4 register (Addresses 4F16, 4E16)  
Timer A9 register (Addresses CF16, CE16)  
(b8)  
b0 b7  
(b15)  
b7  
b0  
Bit  
Function  
Any value in the range from “000016” to “FFFF16” can be set.  
At reset R/W  
Reference  
7-30  
10-13  
15 to 0  
Undefined WO  
Assuming that the set value = n, the “H” level width of the one-shot pulse which is  
output from the TAjOUT pin is expressed as follows :  
n
fi.  
fi: Frequency of count source  
Note: Use the MOVM or STA(STAD) instruction for writing to this register.  
Writing to this register must be performed in a unit of 16 bits.  
b7 b6 b5 b4 b3 b2 b1 b0  
Timer Aj mode register (j = 0 to 2, 4, 9) (Addresses 5616 to 5816, 5A16, DA16)  
0
1 1 0  
Reference  
Function  
1 0 : One-shot pulse mode  
Bit  
0
Bit name  
At reset R/W  
b1 b0  
7-30  
10-13  
0
0
0
0
RW  
RW  
RW  
RW  
Operating mode select bits  
1
2
3
Fix this bit to “1” in one-shot pulse mode.  
b4 b3  
7-33  
Trigger select bits  
0 0 :  
0 1 :  
Writing “1” to one-shot start bit  
(TAjIN pin functions as a programmable I/O  
port pin.)  
4
0
RW  
1 0 : Falling edge of TAjIN pin’s input signal  
1 1 : Rising edge of TAjIN pin’s input signal  
5
6
Fix this bit to “0” in one-shot pulse mode.  
0
0
RW  
RW  
See Table 7.2.3.  
7-6  
Count source select bits  
7
0
RW  
7906 Group User’s Manual Rev.2.0  
20-23  
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