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OPA548F

OPA548F资料
OPA548F
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File Size : 116 KB
Manufacturer:TI/BB
Description:PORT I is an 8-bit Hi-Z input port The 28-pin device does not have a full complement of PORT I pins The unavailable pins are not terminated i e they are floating A read opera- tion for these unterminated pins will return unpredictable values The user must ensure that the software takes this into account by either masking or restricting the accesses to bit operations The unterminated PORT I pins will draw pow- er only when addressed PORT L is an 8-bit I O port PORT C is a 4-bit I O port Three memory locations are allocated for the L G and C ports one each for data register configuration register and the input pins Reading bits 4C7 of the C-Configuration reg- ister data register and input pins returns undefined data There are two registers associated with the L and C ports a data register and a configuration register Therefore each L and C I O bit can be individually configured under software control as shown below
 
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型 号:OPA548F
厂 家:TI/BB
封 装:
批 号:07+
数 量:500
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