OLIMEX OLIMEXINO-328 User manual

OLIMEXINO-328
an Arduino-like development board
USER S MANUAL
Document revision E, August 2017
Designed by OLIMEX Ltd, 2011
All boards produced by Olimex LTD are ROHS compliant

OLIMEX© 017 OLIMEXINO-3 8 user's manual
DISCLAIMER
© 017 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other product
names may be trademarks of others and the rights belong to their respective owners.
The information in this document is provided in connection with Olimex products. No license, express or implied
or otherwise, to any intellectual property right is granted by this document or in connection with the sale of
Olimex products.
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of
this license, visit http://www.creativecommons.org/licenses/by-sa/3.0/.
This hardware design by Olimex LTD is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported
License.
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All particulars of the
product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or
expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This
document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or
damage arising from the use of any information in this document or any error or omission in such information or any
incorrect use of the product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only
and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the
product must have electronics training and observe good engineering practice standards. As such, the goods being
provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related
protective considerations, including product safety and environmental measures typically found in end products that
incorporate such semiconductor components or circuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
THERE S NO WARRANTY FOR THE DES GN MATER ALS AND THE COMPONENTS
USED TO CREATE OL MEX NO-328. THEY ARE CONS DERED SU TABLE ONLY FOR
OL MEX NO-328.
Page of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
Table of Contents
DISCLAIMER ............................................................................................................. 2
CHAPTER 1 – OVERVIEW ...................................................................................... 5
1. ntroduction to the chapter ....................................................................................................... 5
1.1 ntroduction to Arduino .......................................................................................................... 5
1.2 mprovements over the original Arduino design .................................................................. 5
1.3 Target market and purpose of the board ............................................................................... 7
1.4 Document organization ........................................................................................................... 7
CHAPTER 2 – SETTING UP THE OLIMEXINO-328 ........................................... 8
2. ntroduction to the chapter ....................................................................................................... 8
2.1 Electrostatic warning ............................................................................................................... 8
2.2 Requirements ........................................................................................................................... 8
2.3 Connecting to Arduino DE .................................................................................................... 9
CHAPTER 3 – OLIMEXINO-328 BOARD DESCRIPTION ............................... 10
3. ntroduction to the chapter ..................................................................................................... 10
3.1 Layout (top view) ................................................................................................................... 10
3.2 Layout (bottom view) ............................................................................................................. 11
CHAPTER 4 – CONTROL CIRCUITY ................................................................. 12
4. ntroduction to the chapter ..................................................................................................... 12
4.1 Reset ........................................................................................................................................ 12
4.2 Clocks ...................................................................................................................................... 12
4.3 Power supply circuit .............................................................................................................. 12
CHAPTER 5 – INTERFACES AND HARDWARE ............................................... 13
5. ntroduction to the chapter ..................................................................................................... 13
5.1 UEXT connector ..................................................................................................................... 13
5.2 PWR_J connector .................................................................................................................. 13
5.3 Arduino shield platform ........................................................................................................ 14
5.3.1 CON1 – POWER ............................................................................................................ 14
5.3.2 CON2 – ANALOG ......................................................................................................... 14
5.3.3 CON3 – DIGITAL .......................................................................................................... 14
5.3.4 CON4 – DIGITAL: ........................................................................................................ 15
5.4 mini USB connector ............................................................................................................... 15
5.5 CSP pads ................................................................................................................................ 15
5.6 Jumper description ................................................................................................................ 16
5.6.1 USB_RST jumper ........................................................................................................... 16
5.6.2 LED1_E jumper ............................................................................................................. 16
5.6.3 D7-D10 jumper ............................................................................................................... 16
5.7 LEDs and buttons .................................................................................................................. 17
CHAPTER 6 – SCHEMATICS ................................................................................ 18
Page 3 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
6. ntroduction to the chapter ..................................................................................................... 18
6.1 Eagle schematics .................................................................................................................... 18
6.2 Physical dimensions ............................................................................................................... 20
CHAPTER 7 – REVISION HISTORY AND SUPPORT ....................................... 21
7. ntroduction to the chapter ..................................................................................................... 21
7.1 Document revision ................................................................................................................. 21
7.2 Board revision ........................................................................................................................ 22
7.3 Useful web links and purchase codes ................................................................................... 22
7.4 FAQ ......................................................................................................................................... 23
7.5 Product support ..................................................................................................................... 24
Page 4 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 1 – OVERVIEW
1. Introduction to the chapter
Thank you for choosing the OLIMEXINO-3 8 board from Olimex! This document provides a
user’s guide for the Olimex Arudino-like OLIMEXINO-3 8. As an overview, this chapter gives the
introduction to Arduino, the scope of this document and lists the features of the board. The
document’s organization is then detailed.
1.1 Introduction to Arduino
Arduino is an open-source electronics prototyping platform, designed to make the process of using
electronics in multidisciplinary projects more accessible. The hardware consists of a simple open
design for the Arduino board with an Atmel AVR processor and on-board I/O support. The software
consists of a standard programming language and the boot loader that runs on the board.
Arduino hardware is programmed using a Wiring-based language (syntax + libraries), similar to C+
+ with some simplifications and modifications, and a processing-based IDE.
The project began in Ivrea, Italy in 005 to make a device for controlling student-built interaction
design projects less expensively than other prototyping systems available at the time. As of
February 010 more than 1 0,000 Arduino boards had been shipped. Founders Massimo Banzi and
David Cuartielles named the project after Arduino, a local bar. The name is an Italian masculine
first name, meaning "strong friend". The English pronunciation is "Hardwin", a namesake of
Arduino of Ivrea.
More information can be found at the creators web page http://arduino.cc/ and in the Arduino Wiki
http://en.wikipedia.org/wiki/Arduino. To make the story short – Arduino is easy for the beginners
with minimal Electronics knowledge, while not restricting the professionals, as they can program it
in C++ or a mix of Arduino/C++ language.
There are thousands of projects which make the startup easy as there is almost no
field Arduino enthusiasts have not explored already.
1.2 Improvements over the original Arduino design
We entered the Arduino field 5 years after the design was introduced, allowing us to see and skip
most of the errors the Arduino inventors made. We were able to read feedback from current
customers and to implement what they wanted to see in the original Arduino.
There are a number of improvements over the original Arduino design that we have
implemented in OL MEX NO-328:
1. We allowed the board to work at different frequencies with easy exchange of the quartz crystal.
. The original Arduino used a linear power supply. This limited the input voltage range. We
designed a switching power supply to accept input voltages from 9 to 30V DC, making it possible
Page 5 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
to use virtually any power supply adapter on the market, including applications with the standard
4VDC industrial power supply.
3. We carefully selected all components to work reliably over the industrial temperature range
- 5+85C so the board can be used in industrial applications (the original design was suitable for the
commercial 0-70C operating temperature).
4. The original Arduino design was not good for portable applications as it dissipated too much
power in the linear voltage regulators. We chose ULTRA LOW POWER voltage regulators with
consumption of only few microamps to enable handheld and battery powered applications.
5. We added a Li-Ion rechargeable battery power supply option with a BUILT-IN onboard charger,
so when a battery is attached it is automatically kept charged. When the other power source (USB
or external adapter) is removed it will AUTOMATICALLY power the board – no jumpers, no
switches!
6. Our design can work both on 3.3V and on 5V, switch-selectable.
7. Our boards included the UEXT connector, allowing many existing modules like RF, ZIGBEE,
GSM, and GPS to be connected. It also saves soldering to interface I C, UART and/or SPI.
8. Our design allows a Real Time Clock (RTC).
9. We made our design noise immune in the RESET circuit. There are a number of threads on the
Arduino forum for problems with the RESET when the board works with motors, since Atmel
recommendations were omitted in the original design. We fixed this.
10. We used a separate voltage regulator for the Analog part, allowing the ADC to be read correctly
without digital noise pickup.
11. We made provision for the optional ARef precision voltage source, for users who need higher
precision and temperature stability in Analog readings.
1 . We placed the LEDs and the BUTTONs on the edge of the board for easy access even if the
boards have shields on them.
13. All components were placed LOWER than the connectors, so the shields do not interfere with
them.
14. We used a mini USB connector which is common and used in most cell phones, so you do not
have to buy other cables.
15. The original design did not space the connectors at 0.1", making perfboard use impossible. For
compatibility, we used the same spacing but we added footprints next to the connectors on 0.1"
which customers can use with perforated boards.
16. All signals on the connectors are printed on top and on bottom of the board, so when you check
with a probe you know exactly which point you are measuring.
Page 6 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
17. We added 4 mounting holes making board attachment easier.
1.3 Target market and purpose of the board
The board is aimed at beginners due to the fact it might be programmed without the need of third-
party tools and the big Arduino community. It is also suitable for professionals due to the industrial
range of operation, small form factor and wide power supply choice. The board is suitable for hand-
held applications.
1.4 Hardware revision of the board used in the manual
Revision B and revision C boards and resources were used while writing this document. It is
possible that all revisions used to create the document are outdated so it is recommended to
download the latest sources from the web-page of OLIMEXINO-3 8 at the official
www.olimex.com web-site.
1.4 Document organization
Each section in this document covers a separate topic, organized as follow:
Chapter 1 is an overview of the board usage and features
Chapter provides a guide for setting the board
Chapter 3 contains the general board diagram and layout
Chapter 4 mentions the control circuitry used in OLIMEXINO-3 8
Chapter 5 is an explanation of the connectors, the LEDs and the jumpers position
Chapter 6 contains the general board diagram and layout
Chapter 7 contains the revision history, useful links and support information
Page 7 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 2 – SETTING UP THE OLIMEXINO-328
2. Introduction to the chapter
This section helps you set up the OLIMEXINO-3 8 development board for the first time.
Please consider first the electrostatic warning to avoid damaging the board, then discover the
hardware and software required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior is
detailed.
2.1 Electrostatic warning
The OLIMEXINO-3 8 board is shipped in protective anti-static packaging. The board must not be
subjected to high electrostatic potentials. General practice for working with static sensitive devices
should be applied when working with this board.
2.2 Requirements
In order to set up the OLIMEXINO-3 8 optimally, you might need to update your set of hardware
and/or software tools. The major needed components are listed below.
Hardware tools:
- USB type A to USB mini cable
- Personal computer with USB type A port
Software tools:
- any official Arduino IDE
You would need additional hardware and software if you want to use OLIMEXINO-3 8 as a
general-purpose Atmel AVR board (or you want to reprogram the bootloader, required for Arduino
IDE communication).
You would need to a have a working combination of a programmer tool and a software
development environment. You would also need a 6-pin header or jumper wires to establish proper
hardware connection between the programmer tool and the board.
Currently OLIMEX sells a couple of ATmega3 8-compatible programmers that would also work
with the most common software environments (AVR Studio 4 and 5; Atmel Studio 6; AVRdude –
the built-in Arduino programmer). These programmers are: AVR-ISP500 and AVR-ISP-MK .
Page 8 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
2.3 Connecting to Arduino IDE
The latest Arduino IDE might be downloaded from the official Arduino web-site: http://arduino.cc.
After you have downloaded and installed (or extracted) the environment you should connect the
OLIMEXINO-3 8 to the computer via an USB type A to USB mini cable.
The first time you connect the board you would be asked for drivers. You can find the drivers
needed for OLIMEXINO-3 8 in the install folders of the Arduino IDE (usually in folder “drivers”).
After the drivers are successfully installed you should run the Arduino IDE.
In “Tools->Board” you should select “Arduino Duemilanove w/ ATmega3 8”.
That is all. Now you can load any built-in example or you can refer to the number of demo
examples in the “SOFTWARE” section of the OLIMEXINO-3 8's web-page:
https://www.olimex.com/Products/Duino/AVR/OLIMEXINO-3 8/
For more detailed instructions and Linux installation please check the following document:
https://www.olimex.com/Products/Duino/AVR/OLIMEXINO-3 8/resources/Install_OLIMEXINO-
3 8.pdf
Page 9 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 3 – OLIMEXINO-328 BOARD DESCRIPTION
3. Introduction to the chapter
Here you get acquainted with the main parts of the board. Note the names used on the board differ
from the names used to describe them. For the actual names, please, check the OLIMEXINO-3 8
itself.
3.1 Layout (top view)
Page 10 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
3.2 Layout (bottom view)
Page 11 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 4 – CONTROL CIRCUITY
4. Introduction to the chapter
Here you can find information about reset circuit and quartz crystals locations, the power supply
circuit is discussed.
4.1 Reset
OLIMEXINO-3 8 reset circuit includes R1 (4.7kΩ), R13 (330Ω), SD5 (1N4148), C7 (4.7nF),
C8(100nF), jumper USB_RST, ATmega3 8P pin 9 (PC6/3RESET/PCINT14) and RST button.
4.2 Clocks
Quartz crystal Q1 16 MHz is connected to ATmega3 8P pin 7 (XTAL1) and pin 8 (XTAL ). Note
that the crystal is on socket and can be changed to any value.
4.3 Power supply circuit
OLIMEXINO-3 8 can take power supply from:
- external power supply (9-30) VDC.
- +5V from USB
- 3.7V Li-ion battery
The programmed board power consumption is about 0mA with all peripherals enabled.
The board can operate at either 3.3V or 5V, selected via a switch. When operating at 5V ensure that
the boards connected to OLIMEXINO-3 8 can also operate at 5V. If you are not sure, set the switch
to 3.3V operation.
Page 1 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 5 – INTERFACES AND HARDWARE
5. Introduction to the chapter
In this chapter are presented the interfaces found on the programmed that can be found on the
board. Jumpers functions are described.
5.1 UEXT connector
The UEXT is used to connect additional extension modules to the OLIMEXINO-3 8. Most Olimex
extensions (named MOD-XXXX) can be plugged directly to this connector. If you wish to add
additional extras to your board this is the right interface. Of course, using jumper wires you might
connect any other board that uses I C, SPI or UART interface without the need of soldering.
More information about the UEXT might be found here:
https://www.olimex.com/Products/Modules/UEXT/
Pin # Signal name
1 VCC (3.3 or 5V)
2 GND
3 D1(TXD)
4 D0(RXD)
5 A5(SC )
6 A4(SDA)
7 D12(MISO)
8 D11(MOSI)
9 D13(SCK/ ED1)
10 UEXT_#CS
IMPORTANT: Be careful with the voltage levels of the signals of the UEXT and specifically the
output available at pin #1. The on-board 3.3V/5V switch also controls the voltage output of the
UEXT! Do not connect Olimex modules when the switch is set to 5V position, unless you are 100%
sure that these UEXT modules work fine at 5V (most Olimex modules can not work properly at 5V,
only at 3.3V)
5.2 PWR_J connector
The power jack used is the typical one used by Olimex in most of our products – the DC barrel jack
has .0mm inner pin and 6.3mm hole. More information about the exact component might be found
here: https://www.olimex.com/wiki/PWRJACK. You should provide between 9 and 30 volts @
1.5A maximum to the board. Note that we also sell a couple of compatible 1 V capable power
supplies. These might be found here: https://www.olimex.com/Products/Power/.
Pin # Signal name
1 Power Input
2 GND
Page 13 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
5.3 Arduino shield platform
These four connectors are usually used when you want to mount extension shield on the
OLIMEXINO-3 8. The shield connector layout follows the original Arduino layout and spacing
BUT we have also provided set of metalized holes that improve the layout by keeping 0.1'' step
between connectors. The extra holes might be used when the original connector get clunky of wires.
They can be used for placing measuring tools.
Olimex has a number of shields available. They might be found here:
https://www.olimex.com/Products/Duino/Shields/
5.3.1 CON1 – POWER
Pin # Signal name
1 RESET
2 +3.3V
3 +5V
4 GND
5 GND
6 VIN
5.3.2 CON2 – ANALOG
Pin # Signal name
1 A0
2 A1
3 A2
4 A3
5 A4(SDA)
6 A5(SC )
5.3.3 CON3 – DIGITAL
Pin # Signal name
1 D0(RXD)
2 D1(TXD)
3 D2(BUT)
4 D3
5 D4
6 D5
7 D6
8 D7
Note: There is a capacitor C1 connected to D and in parallel to BUT (for filtering bounces of the
BUT) but it can cause interference (and unwanted filtering of signals) if you want to connect for
instance RF module to D , remove C1 .
Page 14 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
5.3.4 CON4 – DIGITAL:
Note that the additional pads near the CON4 seems slightly off due to the improvement of the shield
design we have made. Consider this alignment when referring to the white print on the board.
Pin # Signal name
1 D8
2 D9
3 D10(#SS)
4 D11(MOSI)
5 D12(MISO)
6 D13(SCK/ ED1)
7 GND
8 AREF
5.4 L PO_BAT connector
The LIPO_BAT connector comes handy when you want to use the OLIMEXINO-3 8 as a stand-
alone device.
Pin # Signal name
1 VBAT
GND
Olimex LTD has a number of batteries with the proper connector. They might be found here:
https://www.olimex.com/Products/Power/
5.4 mini USB connector
Pin # Signal name
1 +5V_VBUS (VCCINT)
2 USBDM
3 USBDP
4 Not connected
5 GND
5.5 ICSP pads
Pin # Signal name
1 D12(MISO)
2 VCC
3 D13(SCK/ ED1)
4 D11(MOSI)
5 RESET
6 GND
Note, that there is no plastic component mounted for this connector. You would either need own
Page 15 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
connector or jumper wires to be able to connect your AVR programmer tool.
Please make sure you are not trying to use TPI or PDI interface with the ICSP pads.
If your programmer has only 10 pin ICSP cable you would need to use jumper wires or adapter to
be able to connect to the 6 pin interface.
5.6 Jumper description
The pictures below show the default jumper position. Note that the board has only SMT jumpers
which require soldering to close the jumper; and melting the solder plus cutting between the pads to
disconnect the jumper.
5.6.1 USB_RST jumper
When closed USB_RST jumper enables USB auto-reset function. After reset the bootloader is
started and loads the program into the Flash.
Default state is closed.
5.6.2 LED1_E jumper
When closed LED1_E, connects LED1 to D13(SCK) line.
Default state is closed.
5.6.3 D7-D10 jumper
When D7/D10 jumper is closed in position D7 – UEXT pin 10 (UEXT_CS) is connected to
Atmega3 8P pin 11 (PD7) – signal D7, when this jumper is closed in position D10 – UEXT pin 10
(UEXT_CS) is connected to Atmega3 8P pin 14 (PB /#SS) – signal D10(3SS).
Default state is closed in position D7.
Page 16 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
5.7 LEDs and buttons
Status LED with name LED1 (green) connected via jumper LED1_E to ATmega3 8P pin 17
(SCK/PCINT5/PB5) – signal D13(SCK/LED1).
Status LED with name LED (yellow) connected to ATmega3 8P pin 13 (PCINT1/OC1A/PB1) –
signal D9(LED ).
Status LED with name TX (red) indicates that there is transfer in the FTDI.
Status LED with name RX (green) indicates that there is transfer in the FTDI.
Power-on LED (red) with name PWR – this LED shows that the board is power supplied.
User button with name BUT connected to ATmega3 8P pin 3 (INT0/PCINT18/PD ) – signal
D (BUT).
User button with name RST connected to ATmega3 8P pin 9 (PC6/#RESET).
Switch with name SW(3.3V/5V) – selects between 3.3V and 5V power supply of the board. This
switch controls whether the board is powered by 3.3Vdc source or 5Vdc. It is provided to ensure
compatibility with both original 5V shields and 3.3V modules.
Important! Changing this jumper also changes the voltage available at pin #1 of UEXT and also the
voltage levels of all data signals available there (UART, SPI, I C). Most Olimex-manufactured
UEXT modules work at 3.3V – they would get damaged if the jumper is set to 5V. When using
Olimex MOD- board on this UEXT ensure the jumper is set to 3.3V, else you might damage the
module.
Page 17 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
CHAPTER 6 – SCHEMATICS
6. Introduction to the chapter
In this chapter is located information about the schematics describing logically and physically
OLIMEXINO-3 8.
6.1 Eagle schematics
Stand-alone search-able schematic in PDF format might be found at the web page of OLIMEXINO-
3 8.
The schematic is also shown on the next page for quicker reference.
We mostly use Eagle by Cad Soft 4.16r for designing. However, the files should be compatible
with the latest Eagle available. Cad Soft offers a trial version of their software that allows you to
inspect schematics and board files (without being able to modify them).
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/.
Page 18 of 4

OLIMEX© 017 OLIMEXINO-3 8 user's manual
Page 19 of 4
9-30VDC
-
Battery Charger
A6
A7
3V3
5V
A0
A1
A2
A3
A4
A5
AREF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
GND
GND
GND
IS 1
IS 2
IS 3
IS 4
IS 5
IS 6
RST
VIN
BUT
C1
C7
4.7nF
C8100nF
C11
100nF
C12
NA(100nF)
C13
100nF
C14
100nF
C15
100nF
C16
100nF
C1739pF
C1839pF
C19
10nF
C21 C22
C23
C26
2.2uF
C27
2.2uF
1
2
3
4
5
6
CON1
NA( N1X6)
1
2
3
4
5
6
CON2
NA( N1X6)
1
2
3
4
5
6
7
8
CON3
NA( N1X8)
1
2
3
4
5
6
7
8
CON4
NA( N1X8)
1 3
D7/D10
D7:Close;D10:Open
FET1
IRLML6402
FET2
IRLML6402
1
2
3
4
5
6
FTDI_BASIC
NA(HR1X6)
L1
FB/600 OHM/1206(321611C-601)
L2
22uH/10%/5mA
L3
CL10uH SW68
LED1
Green(0603)
1 2
LED1_E
Close
LED2
Yellow(0603)
1 2
LED2_E
Close
1
2
LI O_BAT
DW02R
VIN
VIN
+5V
+5V
+5V
+5V+5V
VIN
WR
Red(0603)
WR_J
YDJ-1136
Q1
Q16.000MHz/HC-49S/20pF/20ppm/ TH
GND
Q2
NA
R1
0.47R
R2
0.47R
R3
3k/1%
R4
1k/1%
0R
R5
0R(NA)
0R
R6
0R(NA)
R7
2k
R8
2k
R9
NA
R10
NA
R11
NA
R12
4.7k
R14
NA
R15
2k
R16 1k
R17 1k
R18 2k
R19 4.7k
R21
4.7k
R23
4.7k
R24
4.7k
R25
10k
R26
10k
0R
R27
0R(NA)
R28
15k
RST
RX
Green(0603)
1 2
RXD_E
Close
SD1
1N5819S
SD3
1N5819S
SD5
1N4148/mini-melf
C
A
R
SR1
NA(ZTL431AFTA)
SW(3.3V/5V)
IS-1390(Default: 5V is closed)
TX
Red(0603)
1 2
TXD_E
Close
U1
ATmega328 -AU
ADC6
19
ADC7
22
AGND
21
AREF
20
AVCC
18
GND
3GND
5
INT0/ CINT 18/ D2
32
C0/ADC0/ CI NT8
23
C1/ADC1/ CI NT9
24
C2/ADC2/ CI NT10
25
C3/ADC3/ CI NT11
26
C4/ADC4/S DA/ CINT12
27
C5/ADC5/S CL/ CINT13
28
C6/#RESET/ CI NT14
29
CINT0/CLKO/I C 1/ B0
12
CINT1/OC1A / B1
13
CINT2/#SS/OC 1B/ B2
14
CINT3/OC2A /MOSI/ B3
15
CINT4/MISO / B4
16
CINT6/XTAL1/T OSC1/ B6
7
CINT7/XTAL2/T OSC2/ B7
8
CINT19/OC2B /INT1/ D3
1
CINT20/XCK/T 0/ D4
2
CINT21/OC0B /T1/ D5
9
CINT22/OC0A /AIN0/ D6
10
CINT23/AI N1/ D7
11
RXD/ CIN T16/ D0
30
SCK/ CINT5 / B5
17
TXD/ CI NT17/ D1
31
VCC
4
VCC
6
#RESET
19
3V3OUT
17
CBUS0
23
CBUS1
22
CBUS2
13
CBUS3
14
CBUS4
12
CTS# 11
DCD#10
DSR# 9
DTR# 2
NC1
8
NC2
24
OSCI
27
OSCO
28
RI# 6
RTS# 3
RXD 5
TXD 1
USBDM
16
USBD
15
VCC
20 VCCIO
4
U2
FT232RL(SSO 28)
FB 5
SC 1
SE 2
TC
3
U3
MC33063ADR(SO8)
BATTERY
CHARGER
CE 1
ROG
5
VBAT
3
VDD
4
VSS
2
U4
MC 73812T-420I/OT
BH10R
UEXT
1 2
3 4
5 6
7 8
9 10
D+
D-
GND
ID
VBUS
USB
USB-MINI
1 2
USB_RST
Close
DVCC
3.3V
DVCC
DVCC
DVCC
DVCCDVCC DVCC DVCC
DVCC
3.3V
3.3V
DVCC
DVCC
5V_USB
5V_USB
5V_USB
AVCC
AVCC
AVCC
GND
1
VIN
2
VOUT 3
VR1
MC 1700T-3302E/MB
X1-1
X1-2
NA
A0
A0
A1
A1
A2
A2
A3
A3A4(SDA)
A4(SDA)
A4(SDA)
A5(SCL)
A5(SCL)
A5(SCL)
AREF
AREF
AREF
CTS
CTS
D0(RXD)
D0(RXD)
D0(RXD)
D0(RXD)
D1(TXD)
D1(TXD)
D1(TXD)
D1(TXD)
D2(BUT)
D2(BUT)
D2(BUT)
D3
D3D4
D4
D5
D5
D6
D6
D7
D7
D7
D7
D8
D8
D9(LED2)
D9(LED2)
D9(LED2)
D10(#SS)
D10(#SS)
D10(#SS)
D11(MOSI)
D11(MOSI)
D11(MOSI)
D11(MOSI)
D12(MISO)
D12(MISO)
D12(MISO)
D12(MISO)
D13(SCK/LED1)
D13(SCK/LED1)
D13(SCK/LED1)
D13(SCK/LED1)
D13(SCK/LED1)
DTR
DTR
DTR
GND
GND
RESET
RESET
RESET
RESET
RXI
RXI
TXO
TXO
UEXT_CS
XTAL1
XTAL2

OLIMEX© 017 OLIMEXINO-3 8 user's manual
6.2 Physical dimensions
Note that all dimensions are in inches.
Page 0 of 4