Transcription of css Application Note AN555-1 - Custom Silicon Solutions
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Custom Silicon Solutions , Inc. 2008 1 Version , October 2008 cssCustom Silicon Solutions , Inc. CSS555(C) Micropower Timer (EEPROM Serial interface ) Overview The CSS555 and CSS555C IC s include an internal memory to store configuration and trim data. The data is stored in a non-volatile memory (EEPROM) so that the information is held even when the device is not powered. A four-wire serial interface provides Read/Write access to the EEPROM. To maintain the standard number of 555 pins, four pins have secondary functions. The alternate functions have been defined so they do not interfere with normal timer operation.
Custom Silicon Solutions, Inc. ©2008 1 Version 1.0, October 2008 css Custom Silicon Solutions, Inc. CSS555(C) Micropower Timer (EEPROM Serial Interface) Overview The CSS555 and CSS555C IC’s include an internal memory to store configuration and trim data.
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