Specifications

CY14B104K, CY14B104M
Document #: 001-07103 Rev. *O Page 2 of 33
Contents
Features ...............................................................................1
Functional Description .......................................................1
Logic Block Diagram ..........................................................1
Contents ..............................................................................2
Device Operation ................................................................4
SRAM Read .........................................................................4
SRAM Write .........................................................................4
AutoStore Operation ..........................................................4
Hardware STORE (HSB) Operation ...................................5
Hardware RECALL (Power Up) ..........................................5
Software STORE .................................................................5
Software RECALL ...............................................................5
Preventing AutoStore .........................................................6
Best Practices .....................................................................7
Data Protection ...................................................................8
Noise Considerations .........................................................8
Real Time Clock Operation ................................................8
nvTIME Operation .........................................................8
Clock Operations ...........................................................8
Reading the Clock .........................................................8
Setting the Clock ...........................................................8
Backup Power ...............................................................8
Stopping and Starting the Oscillator ..............................8
Calibrating the Clock .....................................................9
Alarm .............................................................................9
Watchdog Timer ............................................................9
Power Monitor .............................................................10
Interrupts .....................................................................10
Flags Register .............................................................10
Maximum Ratings .............................................................16
Operating Range ...............................................................16
DC Electrical Characteristics ..........................................16
Data Retention and Endurance .......................................17
Capacitance ......................................................................17
Thermal Resistance ..........................................................17
AC Test Conditions ..........................................................17
RTC Characteristics .........................................................18
AC Switching Characteristics .........................................19
Switching Waveforms ......................................................19
Switching Waveforms ......................................................21
AutoStore/Power Up RECALL .........................................22
Switching Waveforms ......................................................22
Software Controlled STORE and RECALL Cycle ..........23
Hardware STORE Cycle ...................................................24
Truth Table For SRAM Operations ..................................25
For x8 Configuration ....................................................25
Ordering Information ........................................................26
Package Diagrams ............................................................27
Sales, Solutions, and Legal Information ........................33
Worldwide Sales and Design Support .........................33
Products ......................................................................33
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