Cypress CY14B256K Manuales de usuario

Tabla de contenidos

• Features

  1
• Functional Description

  1
• Logic Block Diagram

  1
• Pin Configurations

  2
• Pin Definitions

  2
• Device Operation

  3
  • SRAM READ

    3
  • SRAM WRITE

    3
  • AutoStore® Operation

    3
  • Hardware STORE (HSB) Operation

    3
  • Hardware RECALL (Power Up)

    4
  • Software STORE

    4
  • Software RECALL

    4
  • Data Protection

    4
  • Noise Considerations

    4
  • Low Average Active Power

    5
  • Best Practices

    5
• Real Time Clock Operation

  7
  • nvTIME Operation

    7
  • Clock Operations

    7
  • Reading the Clock

    7
  • Setting the Clock

    7
  • Backup Power

    7
  • Stopping and Starting the Oscillator

    7
  • Calibrating the Clock

    8
  • Alarm

    8
  • Watchdog Timer

    8
  • Power Monitor

    9
  • Interrupts

    9
  • Interrupt Register

    9
  • Flags Register

    9
• Maximum Ratings

  15
• Operating Range

  15
• DC Electrical Characteristics

  15
• Data Retention and Endurance

  16
• Capacitance

  16
• Thermal Resistance

  16
• AC Test Conditions

  16
• AC Switching Characteristics

  17
• AC Switching Characteristics (continued)

  18
• AutoStore or Power Up RECALL

  19
• Software Controlled STORE/RECALL Cycles [20, 21]

  20
• Hardware STORE Cycle

  21
• Soft Sequence Commands

  21
• RTC Characteristics

  22
• Truth Table For SRAM Operations

  22
• Part Numbering Nomenclature

  23
• Ordering Information

  24
• Package Diagrams

  25
• Document History Page

  26
• Sales, Solutions, and Legal Information

  28
  • Worldwide Sales and Design Support

    28
  • Products

    28
  • PSoC Solutions

    28