NUC126LE4AE Datasheet, PDF (2/139 Pages) List of Unclassifed Manufacturers – 32-BIT MICROCONTROLLER

NUC126
TABLE OF CONTENTS
1 GENERAL DESCRIPTION ................................................................................. 8
1.1 Key Features Support Table ........................................................................................ 9
2 FEATURES ...................................................................................................... 10
2.1 NuMicro^® NUC126 Features ...................................................................................... 10
3 ABBREVIATIONS............................................................................................. 18
3.1 Abbreviations.............................................................................................................. 18
4 PARTS INFORMATION LIST AND PIN CONFIGURATION............................. 20
4.1 NuMicro^® NUC126 Selection Guide ........................................................................... 20
4.1.1 NuMicro^® NUC126 Naming Rule ....................................................................................20
4.1.2 NuMicro^® NUC126 USB Series (M452 Compatible) Selection Guide.............................21
4.2 Pin Configuration ........................................................................................................ 22
4.2.1
4.2.2
4.2.3
NuMicro^® NUC126 USB Series LQFP48 Pin Diagram ...................................................22
NuMicro^® NUC126 USB Series LQFP64 Pin Diagram ...................................................23
NuMicro^® NUC126 USB Series LQFP100 Pin Diagram .................................................24
4.3 Pin Description ........................................................................................................... 25
4.3.1 NUC126 USB Series Pin Description .............................................................................25
4.3.2 GPIO Multi-function Pin Summary..................................................................................40
5 BLOCK DIAGRAM............................................................................................ 52
5.1 NuMicro^® NUC126 Block Diagram ............................................................................. 52
6 FUNCTIONAL DESCRIPTION ......................................................................... 53
6.1 ARM^® Cortex^® -M0 Core ............................................................................................. 53
6.2 System Manager ........................................................................................................ 55
6.2.1 Overview ........................................................................................................................55
6.2.2 System Reset .................................................................................................................55
6.2.3 Power Modes and Wake-up Sources .............................................................................62
6.2.4 System Power Distribution .............................................................................................65
6.2.5 System Memory Map......................................................................................................67
6.2.6 SRAM Memory Orginization ...........................................................................................69
6.2.7 Register Lock .................................................................................................................70
6.2.8 Auto Trim........................................................................................................................70
6.2.9 UART1_TXD modulation with PWM ...............................................................................71
6.2.10 Voltage Detector (VDET)................................................................................................72
6.2.11 System Timer (SysTick) .................................................................................................73
6.2.12 Nested Vectored Interrupt Controller (NVIC) ..................................................................74
6.3 Clock Controller .......................................................................................................... 77
6.3.1 Overview ........................................................................................................................77
6.3.2 System Clock and SysTick Clock ...................................................................................80
6.3.3 Peripherals Clock ...........................................................................................................81
6.3.4 Power-down Mode Clock................................................................................................82
6.3.5 Clock Output...................................................................................................................82
6.4 Flash Memeory Controller (FMC)............................................................................... 84
May 05, 2017
Page 2 of 139
Rev 1.00