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EM78156EAS 参数 Datasheet PDF下载

EM78156EAS图片预览
型号: EM78156EAS
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器与MASK ROM [8-Bit Microcontroller with MASK ROM]
分类和应用: 微控制器光电二极管局域网有原始数据的样本ROM
文件页数/大小: 48 页 / 420 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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EM78156E  
8-Bit Microcontroller with MASK ROM  
Bit 6 (OD6) Control bit is used to enable the open-drain of P66 pin.  
Bit 7 (OD7) Control bit is used to enable the open-drain of P67 pin.  
IOCC Register is both readable and writable.  
4.2.7 IOCD (Pull-high Control Register)  
7
6
5
4
3
2
1
0
/PH7  
/PH6  
/PH5  
/PH4  
/PH3  
/PH2  
/PH1  
/PH0  
Bit 0 (/PH0) Control bit is used to enable the pull-high of P60 pin.  
0: Enable internal pull-high  
1: Disable internal pull-high  
Bit 1 (/PH1) Control bit is used to enable the pull-high of P61 pin.  
Bit 2 (/PH2) Control bit is used to enable the pull-high of P62 pin.  
Bit 3 (/PH3) Control bit is used to enable the pull-high of P63 pin.  
Bit 4 (/PH4) Control bit is used to enable the pull-high of P64 pin.  
Bit 5 (/PH5) Control bit is used to enable the pull-high of P65 pin.  
Bit 6 (/PH6) Control bit is used to enable the pull-high of P66 pin.  
Bit 7 (/PH7) Control bit is used to enable the pull-high of P67 pin.  
IOCD Register is both readable and writable.  
4.2.8 IOCE (WDT Control Register)  
7
6
5
4
3
2
1
0
WDTE  
EIS  
-
ROC  
-
-
-
-
Bit 7 (WDTE) Control bit used to enable Watchdog timer.  
0: Disable WDT.  
1: Enable WDT.  
WDTE is both readable and writable.  
Bit 6 (EIS)  
Control bit is used to define the function of P60(/INT) pin.  
0: P60, bi-directional I/O pin.  
1: /INT, external interrupt pin. In this case, the I/O control bit of P60 (bit  
0 of IOC6) must be set to "1".  
When EIS is "0", the path of /INT is masked. When EIS is "1", the status  
of /INT pin can also be read by way of reading Port 6 (R6). Refer to Fig.  
7(a).  
EIS is both readable and writable.  
10 •  
Product Specification (V1.3) 07.29.2004  
(This specification is subject to change without further notice)  
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