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M054BN
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Part Number M054BN
Description 32-BIT MICROCONTROLLER
Page 30 Pages


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NuMicroM052/M054BN Data Sheet
ARM Cortex-M0
32-BIT MICROCONTROLLER
NuMicroFamily
M052/M054BN Data Sheet
-1-
Publication Release Date: Mar. 19, 2012
Revision V1.01
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NuMicroM052/M054BN Data Sheet
TABLE OF CONTENTS
1 GENERAL DESCRIPTION ···················································································································6
2 FEATURES ············································································································································7
3 BLOCK DIAGRAM ······························································································································11
4 SELECTION TABLE ···························································································································12
5 PIN CONFIGURATION ·······················································································································13
5.1 QFN 33 pin ················································································································································13
5.2 LQFP 48 pin ··············································································································································14
5.3 Pin Description··········································································································································15
6 FUNCTIONAL DESCRIPTION ···········································································································19
6.1 ARM® Cortex™-M0 Core ·······················································································································19
6.2 System Manager ······································································································································21
6.2.1 Overview·······································································································································21
6.2.2 System Reset ······························································································································21
6.2.3 System Power Architecture ·······································································································22
6.2.4 Whole System Memory Map ·····································································································23
6.2.5 Whole System Memory Mapping Table···················································································25
6.2.6 System Timer (SysTick) ·············································································································25
6.2.7 Nested Vectored Interrupt Controller (NVIC) ··········································································27
6.3 Clock Controller ········································································································································28
6.3.1 Overview·······································································································································28
6.3.2 Clock Generator Block Diagram ·······························································································28
6.3.3 System Clock & SysTick Clock ·································································································30
6.3.4 AHB Clock Source Select ··········································································································31
6.3.5 Peripherals Clock Source Select ······························································································32
6.3.6 Power Down Mode (Deep Sleep Mode) Clock ·······································································33
6.3.7 Frequency Divider Output ··········································································································33
6.4 General Purpose I/O ································································································································35
6.4.1 Overview·······································································································································35
6.5 I2C Serial Interface Controller (Master/Slave) ······················································································37
6.5.1 Overview·······································································································································37
6.5.2 Features········································································································································38
6.6 PWM Generator and Capture Timer······································································································39
6.6.1 Overview·······································································································································39
6.6.2 Features········································································································································40
6.7 Serial Peripheral Interface (SPI) ············································································································41
6.7.1 Overview·······································································································································41
6.7.2 Features········································································································································41
6.8 Timer Controller ········································································································································42
6.8.1 Overview·······································································································································42
Publication Release Date: Mar. 19, 2012
- 2 - Revision V1.01



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NuMicroM052/M054BN Data Sheet
6.8.2 Features: ······································································································································42
6.9 Watchdog Timer (WDT)···························································································································43
6.9.1 Overview·······································································································································43
6.9.2 Features········································································································································44
6.10 UART Interface Controller (UART) ······································································································45
6.10.1 Overview·······································································································································45
6.10.2 Features········································································································································47
6.11 Analog-to-Digital Converter (ADC) ······································································································48
6.11.1 Overview·······································································································································48
6.11.2 Features········································································································································48
6.12 External Bus Interface (EBI) ·················································································································49
6.12.1 Overview·······································································································································49
6.12.2 Features········································································································································49
6.13 Flash Memory Controller (FMC) ··········································································································50
6.13.1 Overview·······································································································································50
6.13.2 Features········································································································································50
7 TYPICAL APPLICATION CIRCUIT ···································································································51
8 ELECTRICAL CHARACTERISTICS··································································································52
8.1 Absolute Maximum Ratings ····················································································································52
8.2 DC Electrical Characteristics ··················································································································53
8.3 AC Electrical Characteristics ··················································································································57
8.3.1 External Crystal ···························································································································57
8.3.2 External Oscillator ·······················································································································57
8.3.3 Typical Crystal Application Circuits ··························································································58
8.3.4 Internal 22.1184 MHz RC Oscillator·························································································59
8.3.5 Internal 10kHz RC Oscillator ·····································································································59
8.4 Analog Characteristics·····························································································································60
8.4.1 Specification of 12-bit SARADC································································································60
8.4.2 Specification of LDO & Power management···········································································61
8.4.3 Specification of Low Voltage Reset ··························································································62
8.4.4 Specification of Brown-Out Detector ························································································62
8.4.5 Specification of Power-On Reset (5V) ·····················································································62
8.4.6 Specification of Temperature Sensor·······················································································63
8.4.7 Specification of Comparator ······································································································63
8.5 Flash DC Electrical Characteristics ·······································································································64
9 PACKAGE DIMENSIONS···················································································································65
9.1 LQFP-48 (7x7x1.4mm2 Footprint 2.0mm)·····························································································65
9.2 QFN-33 (5X5 mm2, Thickness 0.8mm, Pitch 0.5 mm)········································································66
10 REVISION HISTORY···························································································································67
Publication Release Date: Mar. 19, 2012
- 3 - Revision V1.01



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NuMicroM052/M054BN Data Sheet
LIST OF FIGURES
Figure 3-1 NuMicroM051 Series Block Diagram........................................................................ 11
Figure 4-1 NuMicroNaming Rule................................................................................................ 12
Figure 5-1 NuMicroM051 Series QFN33 Pin Diagram............................................................... 13
Figure 5-2 NuMicroM051 Series LQFP-48 Pin Diagram........................................................... 14
Figure 6-1 Functional Block Diagram............................................................................................. 19
Figure 6-2 NuMicro M051Series Power Architecture Diagram .................................................. 22
Figure 6-3 Clock generator block diagram ..................................................................................... 29
Figure 6-4 System Clock Block Diagram ....................................................................................... 30
Figure 6-5 SysTick clock Control Block Diagram........................................................................... 30
Figure 6-6 AHB Clock Source for HCLK ........................................................................................ 31
Figure 6-7 Peripherals Clock Source Select for PCLK .................................................................. 32
Figure 6-8 Clock Source of Frequency Divider .............................................................................. 33
Figure 6-9 Block Diagram of Frequency Divider ............................................................................ 34
Figure 6-10 Push-Pull Output......................................................................................................... 35
Figure 6-11 Open-Drain Output ..................................................................................................... 36
Figure 6-12 Quasi-bidirectional I/O Mode ...................................................................................... 36
Figure 6-13 I2C Bus Timing............................................................................................................ 37
Figure 6-14 Timing of Interrupt and Reset Signal .......................................................................... 44
Figure 8-1 Typical Crystal Application Circuit ................................................................................ 58
Publication Release Date: Mar. 19, 2012
- 4 - Revision V1.01



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