PAC5253

Power Application Controller

13.1. Block Diagram........................................................................................................................................ 44

13.2. Functional Description............................................................................................................................ 44

13.2.1. ADC................................................................................................................................................ 44

13.2.2. Auto-Sampling Sequencer............................................................................................................. 44

13.2.3. EMUX Control................................................................................................................................ 45

13.3. Electrical Characteristics........................................................................................................................ 45

14. Memory System............................................................................................................................................. 46

14.1. Features................................................................................................................................................. 46

14.2. Block Diagram........................................................................................................................................ 46

14.3. Functional Description............................................................................................................................ 46

14.3.1. Program and Data FLASH............................................................................................................. 46

14.3.2. SRAM............................................................................................................................................. 46

14.4. Electrical Characteristics........................................................................................................................ 47

15. Clock Control System..................................................................................................................................... 48

15.1. Features................................................................................................................................................. 48

15.2. Block Diagram........................................................................................................................................ 48

15.3. Functional Description............................................................................................................................ 49

15.3.1. Free Running Clock (FRCLK)........................................................................................................ 49

15.3.2. Fast Clock (FCLK).......................................................................................................................... 49

15.3.3. High-Speed Clock (HCLK).............................................................................................................49

15.3.4. Auxiliary Clock (ACLK)................................................................................................................... 49

15.3.5. Clock Gating................................................................................................................................... 49

15.3.6. Ring Oscillator (ROSC).................................................................................................................. 49

15.3.7. Trimmed 4MHz RC Oscillator......................................................................................................... 49

15.3.8. Internal Slow RC Oscillator............................................................................................................ 49

15.3.9. Crystal Oscillator Driver................................................................................................................. 49

15.3.10. External Clock Input..................................................................................................................... 49

15.3.11. PLL............................................................................................................................................... 49

15.4. Electrical Characteristics........................................................................................................................ 50

16. ARM Cortex-M0 Microcontroller Core............................................................................................................ 51

16.1. Features................................................................................................................................................. 51

16.2. Block Diagram........................................................................................................................................ 51

16.3. Functional Description............................................................................................................................ 51

16.4. Electrical Characteristics........................................................................................................................ 52

16.5. Typical Performance Characteristics...................................................................................................... 52

17. I/O Controller.................................................................................................................................................. 53

17.1. Features................................................................................................................................................. 53

17.2. Block Diagram........................................................................................................................................ 53

17.3. Functional Description............................................................................................................................ 53

17.4. Electrical Characteristics........................................................................................................................ 54

18. Serial Interface............................................................................................................................................... 55

18.1. Block Diagram........................................................................................................................................ 55

18.2. Functional Description............................................................................................................................ 55

18.2.1. I2C Controller.................................................................................................................................. 55

18.3. UART Controller..................................................................................................................................... 56

18.4. SPI Controller......................................................................................................................................... 56

18.5. Dynamic Characteristics........................................................................................................................ 57

19. Timers............................................................................................................................................................ 60

19.1. Block Diagram........................................................................................................................................ 60

19.2. Functional Description............................................................................................................................ 61

19.2.1. Timer A........................................................................................................................................... 61

19.2.2. Timer B........................................................................................................................................... 61

19.2.3. Timer C.......................................................................................................................................... 61

19.2.4. Timer D.......................................................................................................................................... 62

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Rev 1.10‒January 28, 2016