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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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A-D CONVERTER  
12.7 One-shot mode  
Continued from preceding Figure 12.7.1  
Interrupt priority level  
b7  
b0  
A-D conversion interrupt control register  
(Address 7016)  
0
Interrupt priority level select bits  
Set the level to one of 1 through 7 when using this interrupt.  
Set the level to 0 when disabling interrupts.  
Interrupt request bit  
0: No interrupt requested  
Port P7 direction register  
b7  
b0  
Port P7 direction register  
(Address 1116)  
AN  
AN  
AN  
AN  
AN  
0
1
2
3
4
Clear the bits, corresponding to  
the selected analog input pins,  
to 0.”  
Setting of A-D conversion start bit to 1.”  
b7  
b0  
A-D control register 0  
(Address 1E16)  
1
A-D conversion start bit  
Trigger generated  
Operation starts.  
Note: Writing to the following must be performed while the A-D converter  
halts (in other words, before a trigger is generated); this must be done  
independent of the operation mode of the A-D converter.  
Each bit of the A-D control register 0, except bit 6  
Each bit of the A-D control register 1  
A-D register i (when the comparator function is selected)  
Comparator function select register 0  
Especially, when the VREF connection select bit is cleared from 1to 0,”  
an interval of 1 µs or more must be elapsed before occurrence of a trigger.  
Fig. 12.7.2 Initial setting example for related registers in one-shot mode (2)  
7906 Group Users Manual Rev.2.0  
12-20  
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