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DS_NUC121_125_Series_EN_Rev1.02.pdf
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详细说明：DS_NUC121_125_Series_EN_Rev1.02nuVOTon
NUc121/125
5.1 NuMicro NUC121/125 Block
6 FUNCTIONAL DESCRIPTION
■■■■■■■■■■■■■■■■■■■
■口■■■■■■■■
79
6.1 ARM Cortex-M0 Core, w79
62 System Manager.∴
∴81
6.2.1 Overview
,81
6.2.2 System Reset.....
面面面面,面面面面面面面面
81
6.2.3 Power Modes and Wake-up Sources
88
6.2. 4 System Power Distribution
90
6.3
Clock Controller
∴92
6.3.1 Overview
∴92
6.3.2 Clock Generator
94
6.3.3 System Clock and Sys Tick Clock
96
6.3. 4 Peripherals Clock................
.98
6.3.5 Power-down mode clock
98
6.3.6 Clock Output .,,,.,..,...
98
64 Flash Memory Controller(FMC)………,…,,,,…,…,,…,100
6.4.1 Overview
,100
6.4.2 Features
6.5 General Purpose I/C(GPI○)…………………………………101
6.5.1 Overview
,101
6.5.2 Features∴
101
66 PDMA Controller(PDMA)….……∴………………∴……………102
6.6.1 Overview
102
6.6.2 Features
102
6.7 Timer Controller (TMr).....
103
6.7.1 Overview
:aa.aa:a:::::::::::::::::::::::::a:a::::::::::a:::::::t
103
6.7.2 Features.……
∴,103
NmOmmO>→>0Tmm
6.8 Basic PWM Generator and Capture Timer(BPWM)
104
6.8.1 Overview
104
6.8.2 Features
104
6.9 PWM Generator and Capture Timer(PWM)
105
6.9.1 Overview∴
105
6.9.2 Features
6.10 Watchdog Timer(WDT)
107
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NUC121/125
6.10.1 Overview
107
6.10.2 Features
107
6.11 Window Watchdog Timer (WWDT)
108
6.11.1 Overview
108
6.11.2 Features
∴108
6.12 USC- Universal serial control interface controller
109
6.12.1 Overview
109
6.12.2 Features∴,109
6.13 USCI-UART Mode
n110
6.13.1 Overview
,110
6.13.2 Features
110
6.14 USCI-SPI Mode
n111
6.141 Overview
111
6.14.2 Features
111
6.15 USCI-12C Mode
∴113
6.15.1 Overview
.113
6.15.2 Features
113
6.16 UART Interface controller(UART)……
.114
6.16.1 Overview
,114
6.16.2 Features∴
114
6.17 1"C Serial Interface Controller([C
115
6.17.1 Overview
ONNmxmOP
115
6.17.2 Features
115
6.18 Serial Peripheral Interface
6.18.1 Overview
,116
6.18.2 Features
116
6.19 USB Device Controller(USBD)
,117
6.19.1 Overview
117
6.19.2 Features
117
6.20 Analog-to- Digital Converter(ADC)……
∴,118
6.20.1 Overview
118
6.20.2 Features
118
7 APPLICATION CIRCUIT
nnaaaaaaa119
8 ELECTRICAL CHARACTERISTICS
121
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8.1 Absolute Maximum Ratings .
8.2 DC Electrical characteristics
∴122
8.3 AC Electrical Characteristics. .....................................................................130
8.3. 1 EXternal 4-24 MHz High Speed Crystal(HXT
8.3.2 External 4-24 MHZ High Speed Crystal(HXT)Oscillator
130
8.3.3 External 32.768 kHz Low Speed Crystal (LXT)
8.3.4 EXternal 32.768 kHz LoW Speed Crystal(LXT)Oscillator
∴131
8.4 Analog Characteristics. .. ..
8.4.112 bit ado∴134
8.4.2LDO.136
8.4.3 Low-Voltage Reset ......................................................................................136
8.4.4 Brown-out detector
136
8. 4.5 Power-on reset
137
8.4.6 Temperature Sensor
138
8.4.7 USB PHY.4139
8.5 Flash dc electrical characteris
∴140
8.6 12C Dynamic Characteristics......................,...........141
8.7 SPI Dynamic Characteristics.
8.7.1 Dynamic Characteristics of Data Input and Output Pin
142
9 PACKAGE DIMENSIONS
n144
9.1LQFP645(7×7×14mm)………,,,…,,…,…,…,…,144
9.2LQFP48L(7×7×1.4mm)…,,,,,,,……,,,145
9.3QFN33z(5X5×0.8mm)……
,146
10REVS| ON HISTORY…147
O÷m0mamo>→>oTmm
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NUc121/125
List of Figures
Figure 4.1-1 NuMicro NUC121/125 Selection Code
18
Figure 4.2-1 NuMicro NUC 121 QFn 33-Pin Diagram
20
Figure 4.2-2 NuMicro NUC 121 QFN 33-Pin Function Diagram
21
Figure42-3 NuMicro nuc121LQFP48- Pin Diagram………
22
Figure 4.2-4 NuMicro NUC121 LQFP 48-Pin Function Diagram
…23
Figure 4.2-5 NuMicro NUC121 LQFP 64-Pin Diagram
24
Figure 4.2-6 NuMicro NUC121 LQFP 64-Pin Function Diagram
Figure 4.2-7 NuMicro NUC125 QFn 33-Pin Diagram
26
Figure 4.2-8 NuMicro NUC125 QFn 33-Pin Function Diagram
27
Figure 4.2-9 NuMicro NUC 125 LQFP 48-Pin Diagram
28
Figure 4.2-10 NuMicro NUC125 LQFP 48-Pin Function Diagram
.29
Figure 4.2-1 1 NuMicro NUC125 LQFP 64-Pin Diagram
1面画
…30
Figure 4.2-12 NuMicro NUC125 LQFP 64-Pin Function Diagram
31
Figure 5.1-1 NuMicro NUC121/125 Block Diagram
..78
Figure 6.1-1 Cortex -MO Block Diagram
79
Figure 6.2-1 System Reset Sources
E
82
Figure 6.2-2 nRESET Reset Waveform
.85
Figure 6.2-3 Power-on Reset(POR)Waveform
85
Figure 6.2-4 Low Voltage Reset (LVR)Waveform
86
Figure 6. 2-5 Brown-out Detector(BOD)Waveform
87
Figure 6. 2-6 Power Mode State Machine
.a::
88
Figure 6. 2-7 NuMicro NUC121/125 Power Distribution Diagram
91
N→N0mm0工
Figure 6.3-1 Clock Generator Global view diagram
93
Figure 6.3-2 Clock Generator Block Diagram
95
Figure6.3-3 System Clock Block Diagram……
96
Figure 6.3-4 HXT Stop Protect Procedure
97
Figure 6.3-5 Sys Tick Clock Control Block Diagram
98
Figure 6.3-6 Clock Source of Clock Output
99
Figure 6.3-7 Clock Output Block Diagram
99
Figure6.14-1 SPI Master Mode Application Block Diagran.………
….111
Figure 6. 14-2 SPI Slave Mode Application Block Diagram
111
Figure 6. 15-1 C Bus Timing
113
Figure 8.3-1 T ypical Crystal Application Circuit
131
Figure 8.3-2 Typical Crystal Application Circuit
132
Figure 8.4-1 Power-up Ramp Condition
137
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Figure 8.6-1 C Timing Diagram
141
Figure 8.7-1 SPI Master Mode Timing diagram
142
Figure 8.7-2 SPI Slave Mode Timing Diagram
143
O÷m0mamo>→>oTmm
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NUc121/125
List of tables
Table1.1-1 Key Features Support Table.………
Table 3.1-1 list of abbreviations
Table 4.1-1 NuMicro nuc121 USB series Selection guide
19
Table 41-2 NuMicro nuc125 USB series Selection guide
19
Table 4.3-1 NUC121 USB Series QFN33 Pin Description
36
Table4.3-2NUC121 USB Series LQFP48 Pin Description……….….….….….…………243
Table 4.3-3 NUC121 USB Series LQFP64 Pin Description ..............................................51
Table 4.3-4 NUC 125 USB Series QFN33 Pin Description
56
Table 4.3-5 NUC 125 USB Series LQFP48 Pin Description
63
Table 4.3-6 NUC125 USB Series LQFP64 Pin Description
Table 4.3-7 NUC121/125 GPIO Multi-function Table
Table 6.2-1 Reset value of Registers
Table 6.2-2 Power mode difference table
88
Table 6.2-3 clocks in power modes
89
Table 6.2-4 Condition of Entering Power-down Mode Again
90
Table 6.3-1 Clock Stable Count value Table
ON÷N0mmO工mm
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NUc121/125
1 GENERAL DESCRIPTION
The Numicro NUC121/125 series is a 32-bit Cortex-M0 microcontroller with USB 2.0 Full-speed
device, a 12-bit ADC and 4 sets of 6-channel BPWM. The nUc121/125 series provides the high
50 MHz operating speed, 8 Kbytes SRAM, 8 USB endpoints and 24 channels of BPWM, which
make it powerful in USB communication and data processing. The NUC121/125 series is ideal for
industrial control, consumer electronics, and communication system applications such as printers,
touch panel, gaming keyboard, gaming joystick, USB audio, PC peripherals, and alarm systems
The NUC121/125 series runs up to 50 MHz and supports 32-bit multiplier, structure NVIC(Nested
Vector Interrupt Control), dual-channel APB and PDMA(Peripheral Direct Memory Access) with
CRC function. Besides, the NUC121/125 series is equipped with 32 Kbytes Flash memory, 8
Kbytes SRAM, and 4 Kbytes loader ROM for the ISP. It operates at a wide voltage range of 2.5v
5.5V and temperature range of -40C -+105C. It is also equipped with plenty of peripheral
devices, such as 8-channel 12-bit ADC. USCL, UART. SPL. 'C. s. usB 2.0 fs device, and
offers low-voltage reset and Brown-out detection, PWM(Pulse-width Modulation), capture and
compare features, four sets of 32-bit timers, Watchdog Timer, and internal Rc oscillator. All these
peripherals have been incorporated into the nUc121/125 series to reduce component count,
board space and system cost
Additionally, the NUc 121/125 series is equipped with isP(In-System Programming), lAP(In
Application-Programming)and ICP(In-Circuit Programming) functions, which allows the user to
update the program under software control through the on-chip connectivity interface, such as
SWD, UART and USB. Also all series support SPROM. Moreover, the NUC125 support Voltage
Adjustable Interface with individual o(1.8v-55V) for saving additional cost on adjusting the
1.1 Key Features Support Table
UScI can be set to uart.c or sPl
Product line
USBD USCI UART IC SPI/Is
Timer
BPWM
ADC
NUC121
4424
24
12
NUC125
1442,4
Table 1. 1-1 Key Features Support Table
The NuMicro NUC121/125 series is suitable for a wide range of applications such as
USB Keyboard/Mouse
Gaming-Joystick
O÷m0mamo>→>oTmm
Industrial automation
Home automation
0 VR peripheral application
USB audio
Alarm system
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NUc121/125
2 FEATURES
2.1 NuMicro NUC121/125 Features
●Core
ARMO Cortex-MO core running up to 50 MHz
One 24-bit system timer
Supports Low Power Sleep mode
Single-cycle 32-bit hardware multiplier
Supports programmable 4 level priorities of Nested vectored Interrupt Controller
(NVIC)
Supports programmable mask-able interrupts
Supports Serial Wire Debug(swD)with 2 watch-points/ 4 breakpoints
o Built-in LDo for wide operating voltage ranged from 2.5V to 5.5V
● Flash Memory
Supports 32 KB application ROM(APROM)
Supports 4.5 KB Flash for loader LDROM)
Supports 512 bytes Security Protection Rom(SPROM)
Supports 12 bytes User Configuration block to control system initiation
Supports Data Flash with configurable memory size
Supports 512 bytes page erase for all embedded flash
Supports In-System-Programming(ISP), In-Application-Programming(lAP)update
embedded flash memory
Supports crc-32 checksum calculation function
Supports flash all one verification function
Hardware external read protection of whole flash memory by security Lock Bit
Supports 2-wired ICP update through SWD/ICE interface
● SRAM Memory
8 KB embedded sram
Supports byte-, half-word-and word-access
Supports PDMa mode
PDMA(Peripheral DMA)
Supports 5 independent configurable channels for automatic data transfer between
memories and peripherals
mm0D→>0工mm
Supports single and burst transfer type
Supports normal and scatter-Gather Transfer modes
Supports two types of priorities modes: Fixed-priority and Round-robin modes
Supports byte-, half-word-and word-access
Supports incrementing mode for the source and destination address for each channel
Supports time-out function for channel o and channel 1
Supports software and SPI/12S, UART, USCl, USB, ADC, PWM and TiMER request
Clock control
Built-in 48 MHz internal high speed RC oscillator(HIRC) for USB device operation
( Frequency variation≤2%at-40℃~+105℃)
Dynamically calibrating the HIRC OSC to48MHz±0.25%from-40℃to105℃
by external 32. 768K crystal oscillator (LXT) or internal USB synchronous mode
Built-in 10 kHz internal low speed RC oscillator for Watchdog Timer and Wake-up
operation
Supports one interface to connect external crystal oscillator for high speed or low
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