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Samsung S3F84B8 Design Manual Manual pdf 22 page image

Samsung S3F84B8 Design Manual

Also see for S3F84B8: User manual

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Contents
  1. Table Of Contents
  2. Table Of Contents
  3. OVERVIEW OF IH COOKER (IHC)
  4. Key Features of S3F84B8
  5. System Principle
  6. HARDWARE IMPLEMENTATION
  7. Table 2-1 S3F84B8 pin assignment in IH cooker system
  8. Power Supply
  9. Synchronization Circuit
  10. Figure 2-4 Waveform of the Synchronization Circuit
  11. Power control
  12. Current Measurement
  13. System Protection
  14. Temperature Protection
  15. Other Functions
  16. Key and Display Circuit
  17. SOFTWARE IMPLEMENTATION
  18. Software Diagram
  19. Internal Resource Arrangement and Configuration
  20. Error Code
Samsung S3F84B8 Design Manual Manual pdf 22 page image
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 3 SOFTWARE IMPLEMENTATION3-23.2 SOFTWARE DIAGRAMFigure 3-2 shows the software diagram.Figure 3-2 Software DiagramNOTE:1. [1] Pan remove detection [1] is done by current sensing. The pan is judged to be removed when the current is lower than apreset threshold.2. [2] Pan on detection [2] is done by pulse counting. The pan is judged to be put on when the counted pulse number isbetween 1 and 3 during 3 oscillation period.Basic procedures include key process, error detection, power control, and UI update. These procedures areexecuted as an infinite loop. Most of the processes are controlled by timing. In other words, process is executedonly when the corresponding timing flag is set. For example, 16 times AD conversion time for error detection, 1.5second for pan-on detection, and 2 seconds for pan-remove detection.Meanwhile, comparator1 and comparator2’s interrupts are enabled for surge protection and IGBT over-voltageprotection, separately. Therefore, the above procedure might be interrupted whenever any of the comparator 1 orcomparator 2’s interrupt condition is met.
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