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EM78P341 参数 Datasheet PDF下载

EM78P341图片预览
型号: EM78P341
PDF下载: 下载PDF文件 查看货源
内容描述: 8位OTP微 [8-Bit Microprocessor with OTP ROM]
分类和应用: OTP只读存储器
文件页数/大小: 102 页 / 1294 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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EM78P341N/342N/343N  
8-Bit Microprocessor with OTP ROM  
Bit 0 (IROUTE): Control bit used to define the P67 (IROUT) pin function  
0 = P67 defined as bi-directional I/O pin  
1 = P67 defined as IROUT. Under this condition, the I/O control bit  
of P67 (Bit 7 of IOC60) must be set to “0”  
6.2.7 IOCB0 (Pull-Down Control Register)  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
/PD57  
/PD56  
/PD55  
/PD54  
/PD53  
/PD52  
/PD51  
/PD50  
NOTE  
IOCB0 register is both readable and writable  
Bit 7 (/PD57): Control bit used to enable the pull-down function of the P57 pin  
(applicable to EM78P343N only)  
0 = Enable internal pull-down  
1 = Disable internal pull-down  
Bit 6 (/PD56): Control bit is used to enable the pull-down function of the P56 pin  
(applicable to EM78P343N only)  
Bit 5 (/PD55): Control bit used to enable the pull-down function of the P55 pin  
Bit 4 (/PD54): Control bit used to enable the pull-down function of the P54 pin  
Bit 3 (/PD53): Control bit used to enable the pull-down function of the P53 pin  
Bit 2 (/PD52): Control bit used to enable the pull-down function of the P52 pin  
Bit 1 (/PD51): Control bit used to enable the pull-down function of the P51 pin  
Bit 0 (/PD50): Control bit used to enable the pull-down function of the P50 pin.  
6.2.8 IOCC0 (Open-Drain Control Register)  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
/OD67  
/OD66  
/OD65  
/OD64  
/OD63  
/OD62  
/OD61  
/OD60  
NOTE  
The IOCC0 register is both readable and writable.  
Bit 7 (/OD67): Control bit is used to enable the open-drain output of the P67 pin  
0 = Enable open-drain output  
1 = Disable open-drain output  
Bit 6 (/OD66): Control bit used to enable the open-drain output of the P66 pin  
Bit 5 (/OD65): Control bit used to enable the open-drain output of the P65 pin  
(Not applicable to EM78P341N)  
22 •  
Product Specification (V1.0) 12.01.2006  
(This specification is subject to change without further notice)  
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