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CY14B101P-SFXIT Datasheet(PDF) 2 Page - Cypress Semiconductor |
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CY14B101P-SFXIT Datasheet(HTML) 2 Page - Cypress Semiconductor |
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2 / 36 page  CY14B101P Document Number: 001-44109 Rev. *M Page 2 of 36 Contents Pinout ................................................................................ 3 Pin Definitions .................................................................. 3 Device Operation .............................................................. 4 SRAM Write ................................................................. 4 SRAM Read ................................................................ 4 STORE Operation ....................................................... 4 AutoStore Operation .................................................... 4 Software STORE Operation ........................................ 5 Hardware STORE and HSB Pin Operation ................. 5 RECALL Operation ...................................................... 5 Hardware RECALL (Power-Up) .................................. 5 Software RECALL ....................................................... 5 Disabling and Enabling AutoStore ............................... 5 Serial Peripheral Interface ............................................... 6 SPI Overview ............................................................... 6 SPI Modes ......................................................................... 7 SPI Operating Features .................................................... 8 Power-Up .................................................................... 8 Power-On Reset .......................................................... 8 Power-Down ................................................................ 8 Active Power and Standby Power Modes ................... 8 SPI Functional Description .............................................. 8 Status Register ................................................................. 9 Read Status Register (RDSR) Instruction ................... 9 Write Status Register (WRSR) Instruction .................. 9 Write Protection and Block Protection ......................... 10 Write Enable (WREN) Instruction .............................. 10 Write Disable (WRDI) Instruction .............................. 11 Block Protection ........................................................ 11 Hardware Write Protection (WP Pin) ......................... 11 Memory Access .............................................................. 11 Read Sequence (READ) instruction .......................... 11 Write Sequence (WRITE) instruction ........................ 11 RTC Access ..................................................................... 13 READ RTC (RDRTC) Instruction .............................. 13 WRITE RTC (WRTC) Instruction ............................... 14 nvSRAM Special Instructions ........................................ 14 Software STORE (STORE) instruction ...................... 14 Software RECALL (RECALL) instruction .................. 14 AutoStore Enable (ASENB) instruction ..................... 14 AutoStore Disable (ASDISB) instruction ................... 15 HOLD Pin Operation ................................................. 15 Real Time Clock Operation ............................................ 16 nvTIME Operation ..................................................... 16 Clock Operations ....................................................... 16 Reading the Clock ..................................................... 16 Setting the Clock ....................................................... 16 Backup Power ........................................................... 16 Stopping and Starting the Oscillator .......................... 16 Calibrating the Clock ................................................. 17 Alarm ......................................................................... 17 Watchdog Timer ........................................................ 17 Power Monitor ........................................................... 18 Interrupts ................................................................... 18 Interrupt Register ....................................................... 18 Flags Register ........................................................... 18 Accessing the Real Time Clock through SPI ............. 19 Maximum Ratings ........................................................... 24 Operating Range ............................................................. 24 DC Electrical Characteristics ........................................ 24 Data Retention and Endurance ..................................... 25 Capacitance .................................................................... 25 Thermal Resistance ........................................................ 25 AC Test Conditions ........................................................ 25 RTC Characteristics ....................................................... 26 AC Switching Characteristics ....................................... 26 Switching Waveforms .................................................... 27 AutoStore or Power-Up RECALL .................................. 28 Software Controlled STORE/RECALL Cycles .............. 29 Switching Waveforms .................................................... 29 Hardware STORE Cycle ................................................. 30 Switching Waveforms .................................................... 30 Ordering Information ...................................................... 31 Ordering Code Definitions ......................................... 31 Package Diagram ............................................................ 32 Acronyms ........................................................................ 33 Document Conventions ................................................. 33 Units of Measure ....................................................... 33 Document History Page ................................................. 34 Sales, Solutions, and Legal Information ...................... 36 Worldwide Sales and Design Support ....................... 36 Products .................................................................... 36 PSoC Solutions ......................................................... 36 |
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