Editing Multi-purpose Embedded System

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*GPIO for digital feedback and control signals
 
*GPIO for digital feedback and control signals
 
**Option 1: directly controlled by MCU
 
**Option 1: directly controlled by MCU
**Option 2: indirectly through D-type flip-flops (e.g. [http://www.datasheetcatalog.org/datasheet/philips/74lv574.pdf 74LV574]) for low pin counts MCU
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**Option 2: indirectly through D-type flip-flops (e.g. [http://www.datasheetcatalog.org/datasheet/philips/74lv574.pdf 74LV154]) for low pin counts MCU
**Option 3: indirectly through shift register flip-flops (e.g. [http://www.standardics.nxp.com/products/lv/datasheet/74lv165.pdf 74LV165] for input, [http://www.datasheetcatalog.org/datasheet/texasinstruments/tpic6595.pdf TPIC6595] or [http://www.nxp.com/acrobat_download/datasheets/74LV595_3.pdf 74LV595] for output ) for extremely low pin count MCU
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**Option 3: indirectly through shift register flip-flops (e.g. [http://www.datasheetcatalog.com/datasheets_pdf/M/7/4/H/M74HC165.shtml 74HC165] for input, [http://www.datasheetcatalog.org/datasheet/texasinstruments/tpic6595.pdf TPIC6595] or [http://www.datasheetcatalog.org/datasheet/philips/74HC_HCT595_CNV_3.pdf 74HC595] for output ) for extremely low pin count MCU
  
  

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