Nuvoton NuMicro NuTiny-SDK-NUC505 User manual

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NUMICRO™ NANO102/112 SERIES USER MANUAL
NUC505
ARM Cortex®-M
32-bit Microcontroller
NuMicro™ Family
NuTiny-SDK-NUC505
User Manual
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

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Table of Contents
1OVERVIEW .........................................................................................4
2NUTINY-SDK-NUC505 INTRODUCTION......................................................5
NuTiny -SDK-NUC505 Jumper Description ....................................................... 62.1
2.1.1 Power Setting....................................................................................................6
2.1.2 Debug Connector ...............................................................................................7
2.1.3 ICE USB Connector ............................................................................................7
2.1.4 USB High Speed Device Connector.........................................................................7
2.1.5 Extended Connector ...........................................................................................7
2.1.6Line In or MIC pin selection ...................................................................................7
2.1.7 Reset Button.....................................................................................................7
2.1.8 RTC wakeup Button............................................................................................7
2.1.9 Headphone ......................................................................................................7
2.1.10 Line In ............................................................................................................7
2.1.11 Power Connectors..............................................................................................7
Pin Assignment for Extended Connector .......................................................... 82.2
NuTiny-SDK-NUC505 PCB Placement ............................................................ 9
2.3
3How to Start NuTiny-SDK-NUC505 on the Keil μVision®IDE............................. 10
Keil uVision®IDE Software Download and Install ...............................................103.1
Nuvoton Nu-Link Driver Download and Install ...................................................103.2
Hardware Setup.......................................................................................103.3
Smpl_NuTiny-NUC505 Example Program........................................................113.4
4NuTiny-EVB-NUC505 Schematic.............................................................. 13
NUC505 ................................................................................................134.1
RESET and RTC_WAKEUP Button ...............................................................144.2
Crystal ..................................................................................................144.3
4.3.1 HXT:High Speed Crystal (12 MHz) ........................................................................ 14
4.3.2 LXT: Low Speed Crystal (32.768 kHz) .................................................................... 14
ICE Interface...........................................................................................154.4
Boot Select.............................................................................................164.5
USB 2.0 High Speed Device........................................................................174.6
4.6.1 PCB Layer Stack-up.......................................................................................... 17
4.6.2 Through Hole for D+ and D- ................................................................................ 17
4.6.3 Signal Trace for D+ and D-.................................................................................. 18

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4.6.4 Others PCB Design Guideline for USB 2.0............................................................... 18
Power...................................................................................................194.7
LED .....................................................................................................204.8
Micro SD Card Slot...................................................................................214.9
Audio Line In, Headphone Out and MIC .........................................................224.10
4.10.1 Audio Line In................................................................................................... 22
4.10.2 Audio Headphone Out ....................................................................................... 23
4.10.3 Microphone In ................................................................................................. 24
5REVISION HISTORY............................................................................ 25

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1 OVERVIEW
NuTiny-SDK-NUC505 is the specific development tool for NuMicro NUC505 series. Users can
use NuTiny-SDK-NUC505 to develop and verify the application program easily.
NuTiny-SDK-NUC505 includes two portions. One is NuTiny-EVB-NUC505 and the other is Nu-
Link-Me. NuTiny-EVB-NUC505 is the evaluation board and Nu-Link-Me is its Debug Adaptor.
Thus, users do not need other additional ICE or debug equipment.
The NuMicroNUC505 series 32-bit microcontrollers are embedded with ARM®Cortex®-M4F
core for consumer and industrial applications which need high computing power and rich
communication interfaces.
The ARM®Cortex®-M4F core within NuMicroNUC505 series can run up to 100 MHz and
support DSP extensions and Floating Point Unit (FPU) function. The NuMicroNUC505 series
supports 128 Kbytes embedded SRAM with zero-wait state and 2 Mbytes embedded SPI Flash
memory, and is equipped with plenty of high performance peripheral devices, such as 24-bit
Audio CODEC, USB2.0 High-speed Device, USB2.0 Full-speed Host, and other peripheral.

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2 NUTINY-SDK-NUC505 INTRODUCTION
NuTiny-SDK-NUC505 uses the NUC505YO13Y as the target microcontroller. Figure 2-1 is
NuTiny-SDK-NUC505 for NUC505 series, the left portion is called NuTiny-EVB-NUC505 and the
right portion is Debug Adaptor called Nu-Link-Me.
NuTiny-EVB-NUC505 is similar to other development boards. Users can use it to develop and
verify applications to emulate the real behavior. The on board chip covers NUC505 series
features. The NuTiny-EVB-NUC505 can be a real system controller to design users’ target
systems, supports usb high speed interface, audio headphone out, audio line in and sdcad slot.
Nu-Link-Me is a Debug Adaptor. The Nu-Link-Me Debug Adaptor connects your PC's USB port to
your target system (via Serial Wired Debug Port) and allows you to program and debug
embedded programs on the target hardware. To use Nu-Link-Me Debug adaptor with IAR or Keil,
please refer to “Nuvoton NuMicro™ IAR ICE driver user manual “or Nuvoton NuMicro™ Keil ICE
driver user manual” in detail. These two documents will be stored in the local hard disk when the
user installs each driver.
Figure 2-1 NuTiny-SDK-NUC505 (PCB Board)

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NuTiny -SDK-NUC505 Jumper Description2.1 NuTiny-SDK-NUC505 is the specific development tool for NuMicro NUC505 series. Users can
use NuTiny-SDK-NUC505 to develop and verify the application program easily.
NuTiny-SDK-NUC505 includes two portions. One is NuTiny-EVB-NUC505 and the other is Nu-
Link-Me. NuTiny-EVB-NUC505 is the evaluation board and Nu-Link-Me is its Debug Adaptor.
Thus, users do not need other additional ICE or debug equipment.
2.1.1 Power Setting
ICON2: USB port in Nu-Link-Me
CON3: USB port in NuTiny-EVB-NUC505
J1: VCC5 Voltage connecter in NuTiny-EVB-NUC505
J2: VCC33 Voltage connecter in NuTiny-EVB-NUC505
POWER
model
ICON2 USB port
CON3 USB port
J1 VCC5
J2 VCC33
Model 1
Connect to PC
USB
X
X
X
Model 2
X
Connect to PC
USB
X
X
Model 3
X
X
External 5V power
X
Model 3
X
X
X
External 3.3V
power
X: Unused.
Boot Select (SW1)
S4
S3
S2
S1
Boot From
Descriptions
0
1
1
0
ICE SPI EXT
ICE Mode with External
SPI Flash
0
1
1
1
ICE-SPI
ICE Mode with Internal
SPI Flash
1
0
1
1
ICP
Boot from ICP Mode
1
1
0
1
SPI EXT
Boot from External SPI
Flash
1
1
1
0
USB
Boot from USB
1
1
1
1
SPI
Boot from Internal SPI
Flash

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2.1.2 Debug Connector
CON5: Connector in target board (NuTiny-EVB-NUC505) for connecting with Nuvoton ICE
adaptor (Nu-Link-Me)
ICON1: Connector in ICE adaptor (Nu-Link-Me) for connecting with a target board (for
example NuTiny-EVB-NUC505)
2.1.3 ICE USB Connector
ICON2: Mini USB Connector in Nu-Link-Me connected to a PC USB port
2.1.4 USB High Speed Device Connector
CON3: Mini USB Connector in NUC505 USB device high speed function connected to PC
USB port
(Note) using the USB high speed device need external stable power from J1.
2.1.5 Extended Connector
J4, J5, J6, J7, J8 and J9: Show all chip pins in NuTiny-EVB-NUC505
2.1.6 Line In or MIC pin selection
For audio application, JP1 is bais voltage select for MIC(2-3 short) or line in(1-2 short).
2.1.7 Reset Button
SW3: Reset button in NuTiny-EVB-NUC505
2.1.8 RTC wakeup Button
SW2: RTC wakeup button in NuTiny-EVB-NUC505
2.1.9 Headphone
CON2: NUC505 audio headphones connector.
2.1.10 Line In
CON1: NUC505 audio line in connector.
2.1.11 Power Connectors
J1: 5 VCC connector in NuTiny-EVB-NUC505
J2: 3.3 VCC connector in NuTiny-EVB-NUC505
J3: GND connector in NuTiny-EVB-NUC505

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Pin Assignment for Extended Connector2.2 NuTiny-EVB-NUC505 provides NUC505YO13Y on board and the extended connector for QFN-
88 pin. Table 2-1 is the pin assignment for NUC505YO13Y
Pin No
Pin Name
Pin No
Pin Name
Pin No
Pin Name
Pin No
Pin Name
01
RESETn
23
RTC_VDD33
45
GPB5
67
SAR_VDD33
02
GPD0
24
RTC_RPWR
46
GPB5
68
SAR_VSS33
03
GPD1
25
RTC_RWAKEn
47
GPB6
69
GPA0
04
GPB13
26
RTX_XIN
48
GPB7
70
GPA1
05
GPB14
27
RTC_XOUT
49
UD_CDET
71
GPA2
06
GPB15
28
GPA8
50
GPB8
72
GPA3
07
GPB15
29
GPA9
51
GPB9
73
GPA4
08
GPC1
30
GPA10
52
VDD33
74
GPA5
09
GPC2
31
GPA11
53
HP_VDD33
75
GPA6
10
VDD33
32
GPA12
54
LHP_OUT
76
GPA7
11
GPC3
33
GPA13
55
VCMBF
77
VDD12
12
GPC4
34
GPA14
56
RHP_OUT
78
GPB10
13
GPC5
35
GPA15
57
HP_VSS33
79
GPB11
14
GPC6
36
GPC7
58
VMID
80
GPB12
15
VDD12
37
GPC8
59
AVDD33
81
VDD33
16
XIN
38
GPC9
60
MIC1P
82
GPC11
17
XOUT
39
GPC10
61
MIC1N
83
GPC12
18
PLL_UD_VDD12
40
VDD33
62
LLINEIN/MICBIAS
84
GPC13
19
UD_DM
41
GPB0
63
VDD12
85
GPC14
20
UD_DP
42
GPB1
64
GPD2
86
AVDD
21
UD_VDD33
43
GPB2
65
GPD3
87
VOUT
22
UD_REXT
44
GPB3
66
GPD4
88
AGND
Table 2-1 Pin Assignment for NUC505YO13Y

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NuTiny-SDK-NUC505 PCB Placement2.3 Users can refer to Figure 2-2 for the NuTiny-SDK-NUC505 PCB placement.
Figure 2-2 NuTiny-SDK-NUC505 PCB Placement

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3 HOW TO START NUTINY-SDK-NUC505 ON THE KEIL ΜVISION®IDE
Keil uVision®IDE Software Download and Install3.1 Please visit the Keil company website (http://www.keil.com) to download the Keil μVision®IDE
and install the RVMDK
Nuvoton Nu-Link Driver Download and Install3.2 Please visit the Nuvoton company NuMicro™website (http://www.nuvoton.com/NuMicro) to
download “NuMicro™Keil μVision®IDE driver” file. When the Nu-Link driver has been well
downloaded, please unzip the file and execute the “Nu-Link_Keil_Driver.exe” to install the driver.
Hardware Setup
3.3 The hardware setup is shown as Figure 3-1
Figure 3-1 NuTiny-SDK-NUC505 Hardware Setup

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Boot from ICE-SPI mode to select ICE Mode with Internal SPI Flash
S4
S3
S2
S1
Boot From
Descriptions
0
1
1
0
ICE SPI EXT
ICE Mode with External SPI
Flash
0
1
1
1
ICE-SPI
ICE Mode with Internal SPI
Flash
1
0
1
1
ICP
Boot from ICP Mode
1
1
0
1
SPI EXT
Boot from External SPI Flash
1
1
1
0
USB
Boot from USB
1
1
1
1
SPI
Boot from Internal SPI Flash
Smpl_NuTiny-NUC505 Example Program3.4 This example demonstrates the ease of downloading and debugging an application on a NuTiny-
SDK-NUC505 board. It can be found on Figure 3-2 list directory and downloaded from Nuvoton
NuMicro™website.
Directory
Project File
Figure 3-2 Smpl_NuTiny_NUC505 Example Directory

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To use this example:
The LED will toggle on the NuTiny-EVB-NUC505 board.
Start μVision®
Project-Open
Open the Smpl_NuTiny.uvproj project file
Project - Build
Compile and link the Smpl_NuTiny
application
Flash –Download
Program the application code into on-
chip Flash ROM
Start debug mode
Using the debugger commands, you
may:
Review variables in the watch
window
Single step through code
Reset the device
Run the application

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4 NUTINY-EVB-NUC505 SCHEMATIC
NUC5054.1

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RESET and RTC_WAKEUP Button4.2 The reset need R 1k ohm and C 10uf for reset circuit.
Crystal4.3
4.3.1 HXT:High Speed Crystal (12 MHz)
For C16 and C17 is recommended to use high-quality ceramic capacitors in the 5pF~20pF range,
designed for high-frequency applications and selected to meet the requirements of the crystal or
resonator. C16 and C17 are usually the same value. The crystal manufacturer typically specifies a
load capacitance that is the series combination of C16 and C17. The PCB and MCU pin
capacitances must be included when sizing C16 and C17 (20pF can be used as a rough
estimation of the combined pin and board capacitance), external resister need 1 MHz.
4.3.2 LXT: Low Speed Crystal (32.768 kHz)
For C14 and C15 is recommended to use high-quality ceramic capacitors in the 5~33 pF range,
designed for RTC applications and selected to meet the requirements of the crystal or resonator,
external resister need 10 MHz
Applications requiring oscillators on NUC505 series MCUs must take PCB layout into
consideration. The oscillators on NUC505 series MCUs consume very little current, and it
sometimes makes the oscillator circuit sensitive to neighboring circuits. The following lists some
PCB design guidelines:

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ICE Interface4.4 For ICE Mode debug or ICP Mode download code to flash

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Boot Select4.5 The power-on setting is used to configure the chip to enter the specified state when the chip is
powered up or reset. Since each pin of power on setting has an internal pulled-up resistor when in
reset period. If the application needs to set the configuration to “0”, the proper pull-down resistor
of 10K-ohm must be added for the corresponding configuration pins.

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USB 2.0 High Speed Device4.6 The layout rule needs to take USB 2.0 high speed device.
4.6.1 PCB Layer Stack-up
For a USB 2.0 high-speed design, recommend to use at least a four-layer PCB for best signal
characteristics. The majority of signal traces should run on a single layer, next to this layer should
be the GND plane, which is solid with no cuts. Avoid running signal traces across a split in the
ground or power plane. Minimizing the number of signal vias reduces EMI by reducing inductance
at high frequencies.
If you attempt a two-layer board, you will need to reduce the thickness of the PCB along with
increasing separation of traces and increased trace widths to maintain the impedance match of
the D+ and D- data lines. To put things in perspective, what would be D+ and D- lines at 6mil
trace and 6mil space in a four layer board become 18mils wide with 8mil spacing in a two-layer
board.
4.6.2 Through Hole for D+ and D-
For the two-layer or multi-layer of PCB, when the signals of D+ and D- need to be through another
layer, in which the resistively of through hole should be concerned. To lower the resistively issue
for the sensitivity case, the two-via or multi-via should be adapted, as shown in the following
figure.

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4.6.3 Signal Trace for D+ and D-
To avoid the trace effect signal for the eye diagram, the trace length should be almost the same of
D+ and D-. Then, the characteristic impedance should be a symmetrical path for the differential
end of the USB port. The characteristic impedance should be 90 for USB 2.0 high speed. For
reducing the trace length, the USB terminal should be as close as the USB port of NUC505 series
MCUs.
4.6.4 Others PCB Design Guideline for USB 2.0
Control differential impedance on USB traces (90 ohm)
Isolate USB traces from other circuitry and signals
Keep bulk capacitors for down-stream port’s VBUS power close to connectors
Isolate crystal and oscillator
Isolate VRES resistor and keep short traces
Bypass capacitors placed on bottom side to reduce board space

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Power4.7
Note:The 0 ohm resister can short in user application.

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LED4.8
The G_LED2 shows when VDD33 has been supplied.
GPIO PC3 can control G_LED1 to toggle LED.