1. NuMicro MCU Learning Board Introduction
3/7/2013
Richard Kuo
Assistant Professor

2. Outline NuMicro NUC140 Learning Board Nu-LB-NUC140 schematics
SDK installation
Learning Board Basic Sample Package
Keil Development Environment Setup

3. NuMicro MCU Learning Board (Nu-LB-NUC140)
ICE Bridge
Nu-Link
CAN/LIN
UART
5V DC
Power
USB
Device
WAU8822
Codec
EEPROM
SPI Flash
NUC140VE3AN
Line out
LED
Line in
Reset
3x3 Key Matrix
SW int
GPIO
Buzzer
Variable
Resistance

4. NuMicro MCU Learning Board (bottom view)
SD Card

5. Learning Board Power Supply
Basic Supply Voltage is 5V, there are 3 ways to supply power :
ICE_USB : mini USB connector for on-board NuLink ICE
CON5: DC supply connector
POWER1: VCC & GND pins (beside CON5)
J3: mini USB of NUC140 device
Learning Board provide +5V, +3.3V power on the lower-right side
3VVC1 = 3.3V, 5VCC1 = 5V, VCC = 5V, GND1 = GND
max. current is depending on the power supply source, if connecting to PC USB port, its current is about 500mA
Note: During the excerise/experiement, PC may cut off power of USB port if short circuit happens. Please reset the PC to resume the power supply from USB port.

6. Learning Board Connectors
VCC5 = +5V, VCC33 = +3V
ICE_USB: NuLink’s miniUSB port for connecting to PC
CON2: RS232 port
CON5 : DC power supply (+5V)
SW_POW : DC power switch (on/off control of CON5 to board)
POWER1 : System Power connector pins (for jumping wire to power the board when use external voltage converter as power supply)
J3 : NUC140 USB port (when NUC140 serve as USB device)
J1 : audio output (connect to earphone)
J2 : audio input (connect to mic)
RESET : reset button (below on-board LCD)
SW_INT : soft interrrupt button (below RESET button)

7. Learning Board function and used pins

8. NU-LB-NUC140 Pin & Function
Block
Pin
Function
ICE Bridge Nu-Link
ICE_CLK
ICE_DATA
SWD interface
UART
GPB0
GPB1
UART0 Rx
UART0 Tx
WAU8822 codec
GPC0
GPC1
GPC2
GPC3
GPA15
I2SLRCLK
I2SBCLK
I2SDI
I2SDO
I2SMCLK
GPA8
GPA9
I2C0 SDA
I2C0 SCL
GPE14
Line out Enable/Disable
GPE15
Line in plug in/out detect
Key GPB15
GPB15
INT1

9. NU-LB-NUC140 Pin & Function
Block
Pin
Function
CAN
GPD6
GPD7
CAN0 Rx
CAN0 Tx
GPB12~13
CAN transceiver speed
LIN
GPB4
GPB5
UART1 Rx
UART1 Tx
GPB6
LIN transceiver wakeup function
GPB7
LIN transceiver Enable/Disable
7-Seg LED
GPE0~7
Row
GPC4~7
Column
Black Dot Matrix LCD Panel
GPD8
GPD9
GPD10
GPD11`
SPI3 SS30
SPI3 SPCLK
LCD Reset
SPI3 MOSI0
GPD14
Background Enable/Disable

10. NU-LB-NUC140 Pin & Function
Block
Pin
Function
Variable Resistance
GPA7
ADC interface
Buzzer
GPB11
PWM4
Key Matrix
GPA0~5
GPIO
Reset
RESET
EEPROM
GPA10
GPA11
I2C1 SDA
I2C1 SCL
FLASH
GPD0
GPD1
GPD2
GPD3
GPD4
GPD5
SPI2 SS20
SPI2 SPCLK
SPI2 MISO0
SPI2 MOSI0
SPI2 MISO1
SPI2 MOSI1

11. NU-LB-NUC140 Pin & Function
Block
Pin
Function
LED
GPA12
GPA13
GPA14
PWM0
PWM1
PWM2
GPC12~15
GPIO
SD card
GPD12
GPD13
SD card Power Enable/Disable
SD card insert detection
GPC8
GPC9
GPC10
GPC11
SPI1 SS10
SPI1 SPCLK
SPI1 MOSI0
SPI1 MISO0

12. Learning Board Schematics
7-segment schematic
64x128 LCD schematic
RGB LED schematic
Keypad & SW_INT schematic
UART/RS232 schematic
I2C & Buzzer schematic
SPI schematic
PS2 & ADC schematic
I2S schematic
CAN＆LIN schematic
SD card schematic

13. 7 segment schematic
GPE0~7, GPC4~7

14. 64x128 LCD schematic
GPD8~11

15. RGB LED schematic GPA14 control Red color GPA13 control Green color
Output low to enable R/G/B LEDs

16. Red LED schematic
GPC12,13,14,15
(output low to enable LED)

17. Keypad & SW_INT schematic
GPA0~5
GPB15

18. UART/RS232 schematic
GPB0,1

19. I2C & Buzzer schematic
GPA10,11
GPB11

20. SPI schematic
GPD0~5

21. PS2 & ADC schematic
GPA7

22. I2S schematic
GPA8,9
GPA15
GPC0~3

23. CAN＆LIN schematic
CAN : GPD6,7
LIN : GPB4~7

24. SD card schematic
GPD12,13
GPC8~11

25. Learning Board GPIO pin assignment
NuMicro MCU Learning Board has 5 group of GPIO pin : GPIOA, GPIOB, GPIOC, GPIOD, GPIOE
They are named GPA, GPB, GPC, GPD, GPE
Sample code use E_GPA, E_GPB, E_GPC, E_GPD, E_GPE as its defined port name
GPIO pins are allocated at the pins at the lower part of the learning board : J4, J5, J6, J7, J8
You can jump wire to external device with these pins

26. GPIO group A, B
JP4: GPIOA
JP5 : GPIOB

27. GPIO group C, D
JP6 : GPIOC
JP7 : GPIOD

28. GPIO group E
JP8 : GPIOE

29. NuLink ICE used with PC
NuLink ICE is built-in on board with miniUSB connector

30. SDK Installation
Before connecting NuMicro MCU Learning Board to PC, you will need install the following :
Keil/IAR Tools (for program editting, compiling, debugging)
NuLink device driver (NuLink USB driver for PC)
Nuvoton BSP (Learning board sample codes from Nuvoton)
After the above installation, you can connect the miniUSB port of NuLink (upper side of the NUC140 learning board) , and
Build (compile) your sample code into binary file, and Download (burn) thru NuLink to NUC140 on the learning board
Then press Reset button to execute the new code inside NUC140
Or you can unplug and reconnect USB cable which is also reset the entire system to restart with new code
Nuvoton provide NuMicro SDK CDROM with free software tools & sample codes, you can also download the latest driver and sample code from

31. Quick New Project Creation (Keil example)
Create a new project folder Smpl_newproj
Copy 3 files from old sample project
smpl_old.uvproj
smpl_old.uvopt
smpl_old.c
Rename 3 files into new sample name
smpl_new.uvproj
smpl_new.uvopt
smpl_new.c
Change to new project folder, double click on smpl_new.uvproj
the error message show up is smpl_old.c is missing (because we rename it to smpl_new.c)
Move cursor to the left side of the Keil window
Point to smpl_old.c & right mouse click, a menu will show up, please choose “remove from the project”
Point cursor to Source Files, and right mouse click, a file window will show up, then select smpl_new.c to add into the project Source Files
Point cursor to window left top corner, and revise the project name from smpl_old to smpl_new

32. Build and Download Binary Code into MCU
At Keil project window, top menu select Flash , select Configure Flash Tools…
it will show up a configuration window : Options for Target ‘Smpl_new’
select Output, and rename Smpl_old to Smpl_new
select Target to confirm the correct Target Device is Nuvoton NUC140VE3AN (learning board MCU)
select Debug to use Nu-Link Debugger
select Utilities to use Target Driver Nu-Link Debugger
select OK on the bottom of the configuration window
To build project (compile C code into binary code)
Keil command menu，press F7 / Build Target , or select Project and select Build Target
If shown 0 error on the console (the bottom of project window), the binary code will be generated, Else you need to debug the error
Click on the error message in the console, it will takes you to the line of error code
To download binary code into MCU chip
Press Download, or menu select Flash and select Download

33. Setup for using printf function
NuMicro has a printf function of C for MCU, the following steps will direct printf output to UART0 :
Step 1. startup_NUC1xx.s line #10 FALSE changed to TRUE
SEMIHOSTED SETL {TRUE}
Step 2. retarget.c around line #20 to add
#define DEBUG_ENABLE_SEMIHOST
(also retarget.c need to be added to Library Files of the current project, retarget.c can be found in src/NUC1xx-LB_002/ )
Step 3. add printf statement into the C code
printf will print message to UART0, so it will slow down the program due to using UART0 to PC, so we recommend to remove printf statement after debug is done
Step 4. Build project and Download code into MCU
Step 5. Open Debugger Session of Keil, and open UART1 of view window
Step 6. Run (F5)

34. Basic Sample Package Smpl_ADC_PWM : ADC input to control PWM output
NUC100SeriesBSP\NuvotonPlatform_Keil\Sample\NUC1xx-LB_002\
Smpl_ADC_PWM : ADC input to control PWM output
Smpl_Capture : PMW input (GPA13,14), Catpure Input (GPA12)
Smpl_FATFS_SDCard : build FAT system and read SDCard
Smpl_FMC : reset button to boot in AP (ICP mode), soft Interrupt button to boot in LDROM (ISP mode)
Smpl_HID_IO : PC run HID application to control LEDs on learning board
Smpl_I2C_24LC64 : press 3x3 keypad to control read/write 8KB EEPROM (24LC64)
Smpl_Interrupt : press soft interrupt buttong to control LED flashing
Smpl_LIN_Master : LIN bus master program code
Smpl_LIN_Slave : LIN bus slave program code
Smpl_SPI_Flash_PDMA : SPI read 16MB flash memory (W25Q16)
Smpl_SPI_Flashx2 : SPI dual-wire mode to read 16MB flash memory (W25Q16)
Smpl_Start_Kit : starter kit example, it will display message on LCD and 7 segment LEDs
Smpl_Timer_WDT_RTC : Timer, WatchDog Timer, RTC alarm, and display RTC time
Smpl_UAC : PC play mp3 file, and USB port to learning board output to earphone jack
Simpl_UDC : USB to SDCard
Smpl_VCOM : USB Virtual Com. port

35. Smpl_ADC_PWM System Diagram
Flash
Cortex-M0
SPI
ADC Value: 277
LCD Panel
PWM0
LED
NUC140V3AN
Function: adjusting VR1 to change PWM frequency and control LED flashing

36. Smpl_Capture System Diagram
LCD Panel
Capture demo
High:683usec
Low: 683usec
SPI
Flash
Capture0
Cortex-M0
PWM1
PWM2
NUC140V3AN
Function : PWM pins perform to capture input

37. Smpl_Capture Pin Usage
Input Channel:GPA12
Counter unit: 1usec (((11+1)*1)/12M)
Capture capability: 32 bits (hardware 16bits+ firmware 16bits)
PWM1
Output Channel:GPA13
Period: sec (((11+1)*16*( ))/12M)
High level: 262msec, Low level: 786msec
PWM2
Output Channel:GPA14
Period: usec (((1+1)*1*(8191+1))/12M)
High level: 682usec, Low level: 682usec
LCD
Display Capture0 result

38. Smpl_FMC function description
MCU boot in APROM
LED rotates left
Press SW_INT to ISP function and Boot from LD
MCU boot in LDROM
MCU reset, after MCU boot in LDROM
LED rotates right and flash
reset button to boot in AP (ICP mode),
soft Interrupt button to boot in LDROM (ISP mode)

39. Smpl_I2C_24LC64 System Diagram
Flash
Cortex-M0 I 2 C
SCL I 2 C _
CLK I 2 C 24 LC 64 I 2 C _
DATA I 2 C
SDA
NUC140V3AN
Function: using I2C to read/write EEPROM (24LC64)

40. Smpl_SPI_Flash_PDMA System Diagram
SPICLK2
MISO20
MOSI20
SPISS20
CLK DO DI
/CS
SPI-Flash
(W25Q16BV)
SPI2
NUC140V3AN
PDMA
Function : using SPI to read/write 16MB flash memory (W25Q16)

41. Smpl_SPI_Flash_PDMA SPI setting
Master mode
One channel data in/out
SPI clock rate 1MHz
Transmit data at negative edge
Receive data at positive edge
Disable the auto slave select
Slave select is active low
SPICLK2(GPD1) <--> SPI-Flash0_CLK (pin 6)
MISO20(GPD2) <--> SPI-Flash0_DO (pin 2)
MOSI20(GPD3) <--> SPI-Flash0_DI (pin 5)
SPISS20(GPD0) <--> SPI-Flash0_/CS (pin 1)

42. Smpl_SPI_Flashx2 System Diagram
SPICLK2
MISO20
MOSI20
MISO21
MOSI21
SPISS20
CLK DO DI
/CS
SPI-Flash (W25Q16BV)
SPI2
NUC140V3AN
SPI-Flash (W25Q16B)
Function : using SPI dual-wire mode to read/write flash memory (W25Q16)

43. Smpl_UAC System DiagramPC
USB
Flash
WAU8822
Cortex-M0 I 2 C
2C0SCL
I2C0SDA I 2 S
2SDI
I2SDO
NUC140V3AN
Function : MP3 player，PC play mp3 file and send audio data to USB,
NuMicro learning board receive data from USB and use I2S send to audio codec
(WAU8822), then output to earphone or speaker

44. Smpl_UDC System DiagramPC
USB
Flash
SD card
Cortex-M0
SPI
NUC140V3AN
Function : USB SDcard reader

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