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Mini55

Apr 18, 2017 Page 1 of 74 Rev.1.00

MINI55 SERIES DATASHEET

ARM

Cortex

-M0

32-bit Microcontroller

NuMicro

Family

Mini55 Series

Datasheet

The information described in this document is the exclusive intellectual property of

Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.

Nuvoton is providing this document only for reference purposes of NuMicro microcontroller based

system design. Nuvoton assumes no responsibility for errors or omissions.

All data and specifications are subject to change without notice.

For additional information or questions, please contact: Nuvoton Technology Corporation.

www.nuvoton.com

Mini55

Apr 18, 2017 Page 2 of 74 Rev.1.00

MINI55 SERIES DATASHEET

Table of Contents

1 GENERAL DESCRIPTION ....................................................................... 7

2 FEATURES ......................................................................................... 8

3 ABBREVIATIONS ................................................................................ 11

4 PARTS INFORMATION LIST AND PIN CONFIGURATION .............................. 12

NuMicro

Mini55 Series Naming Rule ............................................................. 12 4.1

NuMicro

Mini55 Series Product Selection Guide ............................................... 13 4.2

PIN CONFIGURATION .............................................................................. 14 4.3

4.3.1 LQFP 48-pin ................................................................................................... 14

4.3.2 QFN 33-pin .................................................................................................... 15

Pin Description ........................................................................................ 16 4.4

5 BLOCK DIAGRAM ............................................................................... 20

NuMicro

Mini55 Block Diagram ................................................................... 20 5.1

6 Functional Description ........................................................................... 21

ARM

Cortex

-M0 Core .............................................................................. 21 6.1

6.1.1 Overview ....................................................................................................... 21

6.1.2 Features ........................................................................................................ 21

System Manager ...................................................................................... 23 6.2

6.2.1 Overview ....................................................................................................... 23

6.2.2 System Reset.................................................................................................. 23

6.2.3 Power Modes and Wake-up Sources ...................................................................... 29

6.2.4 System Power Architecture ................................................................................. 31

6.2.5 System Memory Mapping ................................................................................... 32

6.2.6 Memory Organization ........................................................................................ 32

6.2.7 System Timer (SysTick) ..................................................................................... 34

6.2.8 Nested Vectored Interrupt Controller (NVIC) ............................................................. 35

6.2.9 System Control Registers (SCB) ........................................................................... 38

Clock Controller ....................................................................................... 39 6.3

6.3.1 Overview ....................................................................................................... 39

6.3.2 Auto-trim ........................................................................................................ 41

6.3.3 System Clock and SysTick Clock .......................................................................... 41

6.3.4 Peripherals Clock Source Selection ....................................................................... 42

6.3.5 Power-down Mode Clock .................................................................................... 43

6.3.6 Frequency Divider Output ................................................................................... 43

Mini55

Apr 18, 2017 Page 3 of 74 Rev.1.00

MINI55 SERIES DATASHEET

Flash Memory Controller (FMC) .................................................................... 45 6.4

6.4.1 Overview ....................................................................................................... 45

6.4.2 Features ........................................................................................................ 45

General Purpose I/O (GPIO) ........................................................................ 46 6.5

6.5.1 Overview ....................................................................................................... 46

6.5.2 Features ........................................................................................................ 46

Timer Controller (TMR) .............................................................................. 47 6.6

6.6.1 Overview ....................................................................................................... 47

6.6.2 Features ........................................................................................................ 47

Enhanced PWM Generator ......................................................................... 48 6.7

6.7.1 Overview ....................................................................................................... 48

6.7.2 Features ........................................................................................................ 48

Watchdog Timer (WDT).............................................................................. 51 6.8

6.8.1 Overview ....................................................................................................... 51

6.8.2 Features ........................................................................................................ 51

UART Controller (UART) ............................................................................ 52 6.9

6.9.1 Overview ....................................................................................................... 52

6.9.2 Features ........................................................................................................ 52

C Serial Interface Controller (I

C) ................................................................ 53 6.10

6.10.1 Overview ....................................................................................................... 53

6.10.2 Features ........................................................................................................ 53

Serial Peripheral Interface (SPI) .................................................................... 54 6.11

6.11.1 Overview ....................................................................................................... 54

6.11.2 Features ........................................................................................................ 54

Analog-to-Digital Converter (ADC) ................................................................. 55 6.12

6.12.1 Overview ....................................................................................................... 55

6.12.2 Features ........................................................................................................ 55

Analog Comparator (ACMP) ........................................................................ 56 6.13

6.13.1 Overview ....................................................................................................... 56

6.13.2 Features ........................................................................................................ 56

Hardware Divider (HDIV) ............................................................................ 57 6.14

6.14.1 Overview ....................................................................................................... 57

6.14.2 Features ........................................................................................................ 57

7 APPLICATION CIRCUIT ........................................................................ 58

8 ELECTRICAL CHARACTERISTICS .......................................................... 59

Mini55

Apr 18, 2017 Page 4 of 74 Rev.1.00

MINI55 SERIES DATASHEET

Absolute Maximum Ratings ......................................................................... 59 8.1

DC Electrical Characteristics ........................................................................ 60 8.2

AC Electrical Characteristics ........................................................................ 65 8.3

8.3.1 External Input Clock .......................................................................................... 65

8.3.2 External 4~24 MHz High Speed Crystal (HXT) .......................................................... 65

8.3.3 Typical Crystal Application Circuits ........................................................................ 65

8.3.4 48 MHz Internal High Speed RC Oscillator (HIRC) ..................................................... 66

8.3.5 10 kHz Internal Low Speed RC Oscillator (LIRC) ....................................................... 66

Analog Characteristics ............................................................................... 67 8.4

8.4.1 10-bit SARADC................................................................................................ 67

8.4.2 LDO & Power Management ................................................................................. 68

8.4.3 Brown-out Detector ........................................................................................... 68

8.4.4 Power-on Reset ............................................................................................... 69

8.4.5 Comparator .................................................................................................... 69

Flash DC Electrical Characteristics ................................................................ 70 8.5

9 PACKAGE DIMENSIONS ...................................................................... 71

48-pin LQFP (7 mm x 7 mm) ........................................................................ 71 9.1

33-pin QFN (4 mm x 4 mm) ......................................................................... 72 9.3

10 REVISION HISTORY ............................................................................ 73

Mini55

Apr 18, 2017 Page 5 of 74 Rev.1.00

MINI55 SERIES DATASHEET

List of Figures

Figure 4.1-1 NuMicro

Mini55 Series Selection Code ................................................................... 12

Figure 4.3-1 NuMicro

Mini55 Series LQFP 48-pin Diagram......................................................... 14

Figure 4.3-2 NuMicro

Mini55 Series QFN 33-pin Diagram .......................................................... 15

Figure 5.1-1 NuMicro

Mini55 Series Block Diagram .................................................................... 20

Figure 6.1-1 Functional Block Diagram .......................................................................................... 21

Figure 6.2-1 System Rese Resources ........................................................................................... 24

Figure 6.2-2 nRESET Reset Waveform ......................................................................................... 26

Figure 6.2-3 Power-on Reset (POR) Waveform ............................................................................ 26

Figure 6.2-4 Low Voltage Reset (LVR) Waveform ......................................................................... 27

Figure 6.2-5 Brown-out Detector (BOD) Waveform ....................................................................... 28

Figure 6.2-6 Power Mode State Machine ...................................................................................... 29

Figure 6.2-7 NuMicro

Mini55 Series Power Architecture Diagram .............................................. 31

Figure 6.3-1 Clock Generator Block Diagram ................................................................................ 39

Figure 6.3-2 Clock Generator Global View Diagram ...................................................................... 40

Figure 6.3-3 System Clock Block Diagram .................................................................................... 41

Figure 6.3-4 SysTick Clock Control Block Diagram ....................................................................... 42

Figure 6.3-5 Peripherals Bus Clock Source Selection for PCLK ................................................... 42

Figure 6.3-6 Clock Source of Frequency Divider ........................................................................... 44

Figure 6.3-7 Block Diagram of Frequency Divider ......................................................................... 44

Figure 6.7-1 Application Circuit Diagram ....................................................................................... 50

Figure 8-1 Mini55 Typical Crystal Application Circuit ..................................................................... 66

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