Development Kit DK-S124
v2.0
User’s Manual: Hardware
Rev.1.00 Jun 2016
Renesas SynergyTM Platform
User’s Manual
www.renesas.com
All information contained in these materials, including products and product specifications,
represents information on the product at the time of publication and is subject to change by
Renesas Electronics Corp. without notice. Please review the latest information published by
Renesas Electronics Corp. through various means, including the Renesas Electronics Corp.
website (http://www.renesas.com).
Notice
1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of
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and information in the design of your equipment. Renesas Electronics assumes no responsibility for any losses incurred by you
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incurred by you resulting from errors in or omissions from the information included herein.
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especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation
characteristics, installation and other product characteristics. Renesas Electronics shall have no liability for malfunctions or
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(2012.4)
Precautions
This Renesas
Synergy
TM
Development Kit is only intended for use in a laboratory environment under ambient
temperature and
humidity conditions. A safe separation distance should be used between this and any sensitive
equipment. Its use outside the
laboratory, classroom, study area or similar such area invalidates conformity with the
protection requirements of the
Electromagnetic Compatibility Directive and could lead to prosecution.
The product generates, uses, and can radiate radio frequency energy and may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment
causes harmful interference to radio or television reception, which can be determined by turning the
equipment off or on, you
are encouraged to try to correct the interference by one or more of the following measures:
•
Ensure attached cables do not lie across the equipment.
•
Reorient the receiving antenna.
•
Increase the distance between the equipment and the receiver.
•
Connect the equipment into an outlet on a circuit different from that which the receiver is connected.
•
Power down the equipment when not in use.
•
Consult the dealer or an experienced radio/TV technician for help.
NOTE: It is recommended that wherever possible shielded interface cables are used.
The product is potentially susceptible to certain EMC phenomena. To mitigate against them it is recommended that
the
following measures be undertaken:
•
The user is advised that mobile phones should not be used within 10m of the product when in use.
•
The user is advised to take ESD precautions when handling the equipment.
The Renesas
Synergy
TM
Development Kit does not represent an ideal reference design for an end product and does
not fulfill
the regulatory standards for an end product.
Table of Contents
Chapter 1 Overview .............................................. 5
1.1 Purpose .................................................. 5
1.2 In the box ............................................... 6
1.3 Environmental Characteristics ............... 6
1.4 Physical Characteristics .......................... 7
1.5 Block diagram......................................... 8
1.6 Hardware features ................................. 9
1.6.1 Main Board ............................................ 9
1.6.1.1 MCU and Board Memory ....................... 9
1.6.1.2 Power ..................................................... 9
1.6.1.3 I/O Features ........................................... 9
1.6.1.4 Programming and Debug Features ...... 10
1.6.2 RSK PMOD Display Board ..................... 10
1.7 Usage Models....................................... 10
1.8 Hardware Versions ............................... 10
1.9 Resources ............................................. 10
Chapter 2 Getting Started ................................... 11
2.1 Powering the DK-S124 ......................... 11
2.2 See the Demo ....................................... 12
Chapter 3 Power Supplies ................................... 13
3.1 Power supply........................................ 13
3.2 Power-up behavior .............................. 13
3.3 Battery supply configuration ............... 13
3.4 +5-V Main Voltage Rail ......................... 13
3.5 3.3-V Main Power Subsystem .............. 14
3.6 Power LED ............................................ 14
3.7 Power Budgets ..................................... 15
3.8 Microcontroller Current ....................... 16
3.9 Battery Current .................................... 16
Chapter 4Components ......................................... 17
4.1 RSK PMOD Display Board ..................... 17
4.2 USB Cable ............................................. 17
4.3 Plug, 3.5-mm-Pitch, 8-Position, Screw
Terminals ............................................. 17
4.4 Peripheral Devices ............................... 17
4.5 CR2032 Lithium Battery ....................... 18
4.6 External Power Supply ......................... 18
Chapter 5 Board Layout ...................................... 19
Chapter 6 Configuration ...................................... 21
6.1 MCU Boot Configuration Jumper ........ 21
6.2 Battery and 5V Power Source Selection
Jumpers ................................................ 21
6.3 RS-232/485 Transceiver Configuration 22
Chapter 7 Connectivity ....................................... 24
7.1 Connectors ........................................... 24
7.1.1 5-V Power Barrel Jack .......................... 24
7.1.2 USB Device ........................................... 24
7.1.3 RS-232/485 and CAN ........................... 24
7.1.4 Stereo Headphone Jack ....................... 26
7.1.5 J-Link USB and Power .......................... 26
7.1.6 S124 Programming and Debug ............ 27
7.1.7 J-Link JTAG Programming and Debug .. 27
7.1.8 Shield-Style Header Connection .......... 28
7.1.9 Seeed Grove I2C Interface ................... 30
7.1.10 SPI&I2C Interface ................................. 31
7.1.11 PMOD Interface ................................... 31
7.2 Human-Machine Interface................... 34
7.2.1 User Touch Buttons ............................. 34
7.2.2 User Touch Slider ................................. 34
7.2.3 User Push-Button Switches ................. 35
7.2.4 User LEDs (3) ........................................ 35
7.2.5 User Potentiometer ............................. 36
7.2.6 Reset Push-Button Switch ................... 36
7.3 Main Board Devices ............................. 36
7.3.1 Serial Flash Memory ............................ 36
7.3.2 C-Max CMM-9301-V4.4 ....................... 37
7.3.3 Maxim MAX9814 with MEMS
microphone ......................................... 37
7.3.4 Avago ADPS-9005 ................................ 37
7.3.5 Analog Devices TMP35 ........................ 37
7.3.6 Bosch BMA250E ................................... 37
Chapter 8 Glossary .............................................. 39
8.1 Abbreviations and Acronyms ............... 39
8.2 Port Numbering ................................... 40
DK-S124 User’s Manual
Overview
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Chapter 1 Overview
1.1 Purpose
The DK-S124 is a development kit for the Renesas SynergyTM S124 microcontroller in a LQFP64 package. The
DK-S124 is primarily intended for software and hardware developers to develop firmware, experiment, and
evaluate the I/O features of the S124 on the DK-S124 prior to development of their own customized hardware.
The DK-S124 contains several communications ports, including Bluetooth Low Energy, CAN, RS-232/RS-485, SPI,
I2C, and USB Device. The board includes a PMOD™ connector and a Grove I2C connector (connector for easy-to-
use Seeed Grove modules), for external prototyping modules from Digilent and other vendors.
For HMI interface examples, the DK-S124 include stereo headphone output, microphone input, touch buttons and
a touch bar, two user-programmable push-buttons, three user programmable LEDs, a thumb-wheel potentiometer,
light sensor, temperature sensor, and 3-axis accelerometer.
Several test points are located around the board, and jumpers are provided for measurements and configuration.
The DK-S124 is supported by both the e2 studio from Renesas and the IAR embedded workbench for Synergy.
For more information on the Synergy DK-S124, visit the Synergy website: http://renesassynergy.com/.
Figure 1: DK-S124 main board and LCD board
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Overview
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1.2 In the box
The following components are included in the DK-S124:
• DK-S124 Main Board with installed acrylic overlay for the touch buttons and touch slider, and installed
bumper feet
• 8 shunt-jumpers for 0.1” headers on the DK-S124
• One RSK PMOD Display Board
• One three-foot USB cable Type-A connector to Micro-B connector
• One plug, 3.5mm pitch, 8 position, screw-terminals wire connection, for mating with J4, the RS-232/485
and CAN connector
• Quick Start Guide for DK-S124
The following components are not included in the DK-S124, but may be useful for test, demonstration, or design
evaluations:
• AC to 5 VDC power adapter, 6 W or greater output, center positive, barrel plug 2.1 mmID 5.5 mmOD >9
mm insertion, for testing or use of the DK-S124 main board without USB connected
• CR2032 lithium battery for battery life testing and current measurements
• Bluetooth capable modules, PC, tablet, smart phone, or other device for testing and demonstrating the
Bluetooth standard or low-energy interface
• 3-mm (1/8”) stereo headphone jack ear buds for demonstrating audio output
• Second USB Type-A to Micro-B cable for debugging while the S124 is talking to an external USB host
• Seeed Grove I2C interface modules to demonstrate operation of this interface
• SPI and/or I2C external communications interface devices for demonstrating operation of these interfaces
1.3 Environmental Characteristics
The DKS124 is not designed as a production unit to be used direction in OEM equipment. Contact Renesas for a list
of hardware design partners who can develop and deliver -productionready- platforms based on the ingredients
used in the DK-S124 kit.
The environmental characteristics are separated into two components: the PCB with circuitry and the Liquid Crystal
Display with Touch Panel; the PCB will continue to operate in its full operational range even if the LCD is outside its
operational range.
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Overview
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Jun 8, 2016
Table 1: Environmental Temperature and Humidity Limits
Specification
Permissible
Minimum
Typical
Maximum
Unit
Storage Temperature
-40
25
85
C
Operating Temperature
-40
25
80
C
Humidity (Non-condensing)
5%
95%
RH
1.4 Physical Characteristics
The outer dimensions of the DK-S124 are approximately 133.3 x 133.2 x 15.3 mm. Weight of the unit is
approximately 86 grams.
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Overview
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1.5 Block diagram
Figure 2: Block Diagram: Main Board
Renesas Synergy
TM
S124 MCU
Development Board
J-Link
USB
USB
FS
Device
DC-DC
Conv.
Stereo
Out,
Mic In Bluetooth
Battery
RS-232
RS-485
CAN
Ambient
Light
Sensor
Power
Meas.
Headers
JTAG
Ports
Reset
Switch
MCU
Port
Headers
PMOD,
SPI/I2C,
Grove I2C
3-Axis
Accel.
Sensor
Temp.
Sensor
User I/O
3x LED
2x Switch
1x Pot.
Touch
Bar
Touch
Buttons
(2)
USB
FS
Device
Head-
phones
or Amp
Ambient
Sounds
RS-232
RS-485
CAN Bluetooth
Device
or
PC
Programing
or
Debugging
PC
5-V
Power
Jack
Config./
Monitor
Jumpers
Voltage/
Current
Probes
User
Modules
Port Monitoring Instrumentation
or
Development Daughter Card
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Overview
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1.6 Hardware features
1.6.1 Main Board
1.6.1.1 MCU and Board Memory
• Synergy S1 MCU
o 32-MHz ARM Cortex™-M0+ core
o 16 kB on-chip SRAM
o 64 or 128-KB on-chip code flash memory
o 4-KB on-chip data flash memory
o For additional peripherals, features, and configurations availability, see the
S124 User’s Manual: Microcontrollers
• 32 MBytes SPI serial flash memory
• 32.768-kHz RTCC crystal and 16MHz MCU clock crystal
• MCU reset push-button switch
1.6.1.2 Power
• Main power input of 5 V to a barrel jack or USB Device input of 5 V
• High efficiency 5-V to 3.3-V system power DC-DC converter
• Low noise 5-V to 3.3-V power regulator for MCU analog functions
• Coin cell holder for lithium CR2032 for low-power operations testing
• Several jumper-configurable headers to allow selection of regulated or battery power source, and
monitoring currents and voltages
1.6.1.3 I/O Features
• CAN transceiver (1 Mbit/s)
• Configurable RS-232/RS-485 port on an industrial-style 3.5-mm screw terminal plug connector
• Stereo audio output with headphone jack and single microphone input
• Full-Speed USB 2.0 Device port (micro-B)
• PMOD 12-pin multi-type expanded interface (firmware configured)
• SEED Grove I2C interface
• 8-pin header SPI&I2C interface
• Two 22-position headers allowing access to power busses and to many MCU signal ports
• Two capacitive touch buttons and one capacitive touch-slider
• Three user configurable LEDs (red, yellow, and green)
• Two user configurable momentary button switches
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Overview
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• User-adjustable manual thumb-wheel potentiometer
• Ambient light sensor, circuit-board temperature sensor, board-mounted 3-axis accelerometer
• Bluetooth dual mode module (Classic and BLE)
1.6.1.4 Programming and Debug Features
• 10-pin 0.05” pitch SWD programming connector (J13) included for direct programming/debug access
• J-Link USB Micro-B connection provided with separate supporting microcontroller to allow SWD
programming and debug of the S124 microcontroller using a USB interface
• Separate Tag-Connect interface pin-pattern provided for programming the J-Link microcontroller, if needed
1.6.2 RSK PMOD Display Board
• Powered by the Main Board
• Provides all support circuitry to convert serial data to displayed data
1.7 Usage Models
The DK-S124 is designed as a hardware design kit platform as well as software development platform for OEM
applications requiring some Human Machine Interface (HMI) and communications capabilities. The platform has
some direct machine-control-support GPIO available through the PMOD and Seeed Grove ports, although the
platform may also be used in conjunction with an OEM’s intelligent I/O and power subsystem, possibly
communicating with that subsystem over RS-232, RS-485, CAN, Bluetooth, or UART/I2C/SPI.
1.8 Hardware Versions
There is one version of the DK-S124 currently in circulation, v2.0.
1.9 Resources
The following documents are related to S124 and DK-S124 hardware:
• DK-S124 Quick Start Guide (printed copy in DK-S124)
• DK-S124 Schematics
• S124 User’s Manual
• S124 Datasheet
You can find all Renesas Synergy documents here: http://renesassynergy.com/docs.
For programming the DK-S124, refer to the DK-S124 User’s Manual (this document) and the S124 User’s Manual.
You are likely to be programming using the Renesas e2 studio tool. We recommend reviewing the e2 studio release
notes and manuals, and the example applications delivered with the DK-S124.
DK-S124 User’s Manual
Getting Started
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Jun 8, 2016
Chapter 2 Getting Started
The DK-S124 includes the Main Board assembled with bumper feet and an acrylic cover over the touch region, a
PMOD serial LCD daughter card, a 3-foot (91-cm) USB Type A to Micro-B adapter cable, and a Quick Start Guide.
To start working with the DK-S124, see the included Quick Start Guide.
Figure 3: DK-S124
2.1 Powering the DK-S124
Prior to providing power with one of the three power options, make sure that the power jumpers in the BATTERY
labeled region of the DK-S124 main board are properly installed. For non-battery operation, and without an
ammeter installation, J3, J19, and J20 should all have jumpers installed across their two pins. Also, the two
SOURCE SELECT header jumpers, J2 and J18, should have a total of three jumpers installed from their center
terminal to their left-most terminal for each row of terminals.
The DK-S124 can be powered via three different methods:
• 5-V power source at the -5V external power connection, J1, on the DK-S124 main board. Note that the
outer sleeve of the barrel connector must be negative, and the center of the connector must be positive.
• External USB host to the J-Link USB connector, J14, on the DK-S124 main board.
• CR2032 coin cell battery in the BAT1 holder on the DK-S124 main board. Note that this option may
require one of the other two listed power sources also be installed for proper operation of the J-Link
interface, which may affect reboot of the S124 processor. For proper operation and use of the coin cell
battery, jumpers on J2 and J18 may need be changed to jump the center terminal to the right-most
terminal, and J19 and J20 may or may have jumpers installed between their terminals (removal of the
jumper unpowers the circuitry served by J19 or J20).
DK-S124 User’s Manual
Getting Started
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Jun 8, 2016
If power is supplied from the 5-V barrel connector, a green LED should be lit in LED4 making that LED green. If
power is from the USB port, both LED4 LEDs are lit on J-Link MCU commands making LED4 appear orange. LED4 is
located in the box labeled “POWER” on the DK-S124. LED4 is not powered by the coin cell with jumpers properly
installed.
If both the barrel connector is powered, and the J-Link USB port is powered, LED4 will change to orange on J-Link
MCU commands and power from the DK-S124 will be taken from the source with the higher voltage, or shared if
the loaded higher-voltage source voltage droops to the open-circuit voltage of the other source.
There is limited voltage protection on the 5-V direct power input. Using a reverse-polarity
barrel plug power source may permanently damage the unit.
2.2 See the Demo
A demo (pre-installed on the DK-S124) will start up when the unit is first powered. If during the course of
software development this demo is erased from the flash memory you can download this demo from the
renesas.com website and re-install it using the e2 studio software development tools, the USB Type A to USB
Micro-B cable, and the Segger J-Link On-Board debugger USB interface.
DK-S124 User’s Manual
Power Supplies
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Jun 8, 2016
Chapter 3 Power Supplies
3.1 Power supply
Power may be supplied to the DK-S124 from three sources:
• The barrel jack J1 in the upper left corner of the circuit board, with +5 V to the center of the
mating plug and 0 V to the outer sleeve of the mating plug
• The USB Micro-B J-Link jack J14 adjacent to the battery holder
• A CR2032 lithium coin cell installed in BAT1 holder near the right edge of the circuit board
When power to the S124 MCU is supplied from the lithium coin cell, power from one of the other
two sources should be available to power the J-Link and related support circuitry. This will allow
proper restarting of the S124 MCU.
3.2 Power-up behavior
The DK-S124 is delivered preloaded with a demonstration program. The demonstration program shows several
features of the DK-S124 and source code is available as a programming example for developers. See the Quick
Start Guide delivered with the DK-S124 for details of use of and expected board behavior when running the
demonstration program.
When powered from J-Link USB or the barrel jack, the green LED in LED4 adjacent to the barrel jack will be lit. The
red LED in LED4 will be controlled by the J-Link microcontroller in accordance with J-Link specifications. When
both LEDs are lit, LED4 will appear orange.
3.3 Battery supply configuration
See Chapter 6 for configuration details.
3.4 +5-V Main Voltage Rail
Dual low-drop Schottky diodes merge the two power inputs (barrel connector input and J-Link USB supply) so
that whichever is available and higher is delivered downstream as the power rail +5V to power supplies for the
circuitry on the DK-S124.
Figure 4: Power Section of Main Board
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Power Supplies
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Figure 5: +5V Main Rail Schematic Extract
3.5 3.3-V Main Power Subsystem
Almost all the circuits on the board require 3.3 volts, including MCU, memory, and logic. The +5-V Main Voltage
Rail power is delivered to the ISL91107 buck-boost switcher. This switcher, using a tiny inductor, creates 3.3 V at
up to 2 A to the DK-S124. It can operate with +5-V rail voltage between about 5.8 V and about 2 V. The variant of
the switcher shown is internally set for FB pin voltage of 3.3 V.
Figure 6: 3.3V Regulator Schematic Extract
3.6 Power LED
LED4 on the DK-S124 indicates the currently used source of power on the system. LED4 has two LEDs in one
package (red, green) so three colors can be visible: red, green, and orange (when both are lit).
When the green portion of LED4 is lit, the 3.3-V Main Power Subsystem is currently under power. The J-Link MCU
controls when the red portion of LED4 is lit.
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Power Supplies
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Jun 8, 2016
Therefore, LED4 orange indicates both J-Link MCU activity and 3.3-V Main Power available, and LED4 green
indicates 3.3-V Main Power available, implying the availability of either 5 V from barrel jack J1 or 5 V from the J-
Link USB connector J14.
3.7 Power Budgets
Table 3 summarizes the power budgets associated with each subsystem, including the typical efficiency losses
through each corresponding power conversion subsystem. These values are very conservative.
Table 2: Subsystem Power Estimates
Subsystem
Power
Requirements
(mW)
Power Supply
Typical
Efficiency
2
5-V Input Power
(mW)
Typ
Max
Typ
Max
MCU VCC
1
12
40
+3V3MCU
90%
13
43
MCU AVCC
3
0.6
13
+3V3ANA_MCU
66%
0.9
20
MCU VCC_USB + VCC_USB_LDO
4
0.9
15
+3V3MCU
90%
1
17
LED4
10
14
+3V3
90%
11
15
User LEDs (all lit)
79
99
+3V3MCU
90%
88
110
CAN
5
29
530
+5V
100%
29
270
RS-232/485
6
19
1250
+5V
100%
19
1250
Serial flash memory
7
0.9
66
+3V3
90%
1
73
Bluetooth
8
0.003
42
VPER
90%
0.01
47
Microphone Input
10
20
+3V3
90%
11
22
Stereo Output
14
63
+3V3
90%
16
70
J-Link MCU Circuit
TBD
230
+3V3
90%
150
360
Thumbwheel Pot.
1
1
+3V3
90%
1.1
1.1
Light Sensor
0.3
1.3
VSNS
90%
0.3
1.4
Temperature Sensor
0.0
0.2
VSNS
90%
0.0
0.2
3-Axis Accelerometer
0.4
0.6
VSNS
90%
0.4
0.7
Notes:
1. MCU current is heavily dependent on firmware and mode of the MCU. Values shown based on datasheet
tables in section 41.2.9, MCU in normal mode with clock frequency 16 MHz.
2. Efficiency for power includes the estimated regulator efficiency and an estimated diode loss based on 0.23-V
forward drop (room temperature, 40-mA diode current). The diode forward drop increases with 5-V load
current.
3. AVCC typical current for low power conversion, reference power supply operating, temperature sensor OFF,
low-power analog comparator OFF, assuming 10% duty cycle of A/D conversions and 10% duty cycle of D/A
conversions. Max current for high-speed conversion 100% duty cycle. Efficiency based on linear LDO
regulator rather than switcher.
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Power Supplies
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Jun 8, 2016
4. USB current does NOT include additional load on MCU_VCC line during USB operations. Typical values
estimated for 10% communications, Max for 4x datasheet typical at 100% communications (no max on
datasheet).
5. CAN typical 10% receive, 10% transmit, 80% standby. Max 100% transmit. Power taken from +5-V bus and
internal chip regulation “enhanced” by Schottky selector diode drop.
6. Typ is for RS-232 mode (RS-485 about half value shown), worst case is RS-485 shorted. Only 5-V current
considered, 3.3-V load is <0.3 mW.
7. Typ is 0.1% write/erase, 20% read (program load, data load), 79.9% standby. Max is 100% erase or write. SPI
Clock from MCU is 8 MHz.
8. Typ is OFF, Max is 95% Rx and 5% Tx.
Take care to ensure the total power used, including any PMODs, is under the maximum 6 W capability of the 3.3-
V power subsystem.
3.8 Microcontroller Current
Power supply current to the MCU may be monitored by connecting ammeter leads of a multimeter in place of
one of three jumpers on the Main Board. Jumper J3 can be used to monitor main MCU power (VCC) plus USB
MCU power (VCC_USB and VCC_USB_LDO). Jumper J19 can be used to monitor MCU analog power (AVCC).
Jumper J18 can be used to monitor USB MCU power alone. These current levels will likely be in the microampere
range depending on the MCU mode of operation, so a benchtop multimeter may be required. Alternately, for J3,
a shunt resistor may be installed on the pads labeled R4 adjacent to J3 to get voltage output for repeatable
measurement. Choice of the resistor value to install will depend on current level estimated for measurement, but
should be chosen to ensure less than 0.2-V drop when used.
3.9 Battery Current
Battery current can be measured by replacing the appropriate jumper with the ammeter leads of a multimeter
and using J2 pins 3 and 5 to measure MCU analog power, or J2 pins 4 and 6 to measure all other circuit power.
With the battery powering the circuit, supplying +5 V from J-Link USB or from the barrel connector may be
needed to ensure the J-Link circuitry can operate and properly support the S124 MCU during restart.
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Chapter 4 Components
4.1 RSK PMOD Display Board
A serially controlled display is provided as part of the DK-S124 to demonstrate small-
display control and interface.
This display plugs into the PMOD 12-position female connector on the left edge of the
DK-S124 main board.
4.2 USB Cable
One three-foot USB cable is provided as part of the DSK-S124. The connector on one end is Type A
for insertion into a PC or other USB Host jack. The connector on the second is Micro-B for insertion
into either the J10 USB Device or the J14 J-Link jack on the DK-S124 main board. If both connections
are needed simultaneously, a second cable will be needed.
4.3 Plug, 3.5-mm-Pitch, 8-Position, Screw Terminals
A plug is provided to mate with J4 near the top center of the DSK-S124 main board to adapt from
discrete wires to the modular connector on the circuit board.
4.4 Peripheral Devices
• Device: Intersil ISL41387 (U5)
o Configurable RS-232 or RS-485 half-duplex or full-duplex serial interface
o RS-232 configurable to 650 kbps, separate receive and transmit connections
o RS-485 configurable to 20 Mbps, or slew rate limited for low noise at 115 kbps or 460 kbps
• Device: Infineon IFX1050G (U6)
o CAN transmission rates from 1 kbps to 1 Mbps
o EMC susceptibility and emissions optimized
• Device: Micron N25Q256A (U7)
o SPI interface: device supports 108-MHz SPI clock, DK-S124 supports 16-MHz clock
o 32 MByte organized for 4 KB subsector, 64 KB sector, and full chip erase operations
o 100,000 erase cycle rating
• Device: C-Max CMM-9301-V4.4 (RF1)
o Bluetooth 4.0 specification, Bluetooth Low Energy
o 1-Mbps RF transfer rate, programmable output signal level
o SPI Host Control Interface
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• Device: Maxim MAX9814 (U10) with MEMS microphone (MK1)
o AGC and low-noise microphone, 2-V bias
o Low-power shutdown mode (not available on DK-S124)
o Selectable output gain for maximum total gain 40 dB, 50 dB, or 60 dB
• Device: On Semiconductor NCP2809 (U11) with stereo headphone jack (J11)
o 135 mW/channel into 16-ohm stereo load
o Internal gain of 0 dB, PSRR 85 dB
o Low power shutdown mode (not available on DK-S124)
• Device: Avago ADPS-9005 (U8)
o Spectral response near that of human eye
o Very low power, 40 μA at 100 Lux, 400 μA at 1k lux
o Analog output, +/-20% over -5C to 85C
• Device: Analog Devices TMP35 (U9)
o Analog output, 2C accuracy, 0.5C linearity
o <50-μA current, shutdown mode <5 μA (not available on DK-S124)
• Device: Bosch BMA250 (U13)
o I2C interface, programmable ranges from +/- 2 g to +/- 16 g, programmable low pass filters
o Motion triggered interrupt output
o 130-μA normal mode operating draw, 1-μA deep suspend mode
• Device: Renesas RX621 (U12) with USB Device Port (J14)
o Programmed to provide J-Link interface, allowing USB programming and debug of S124 MCU
o Powered from the +3.3-V internal, +5-V derived bus, allowing separation from battery supply
4.5 CR2032 Lithium Battery
A standard size CR2032 lithium battery may be used to demonstrate and test battery powered
operation.
4.6 External Power Supply
The DK-S124 is intended to be used with the USB cable providing power, but a barrel jack is also provided on the
main board for an external 5V source. A wall-mounted AC-to-DC power converter may be used with the DK-S124,
plugged into J1 near the upper left corner of the main board. A suitable converter may be Triad part number
WSU050-1500, or a CUI Inc. SWI6-5-N-P5, both available from several distributors.
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Chapter 6 Configuration
The DK-S124 has the following configuration options:
• Jumper J17 for S124 MCU boot configuration
• Jumpers J2, J3, J18, J19, J20, for battery/5 V power source selection
• DIP switch S4 for RS-232/485 transceiver configuration
6.1 MCU Boot Configuration Jumper
Jumper J7 is found near the bottom edge of the Main Board and adjacent to User Switches.
Installation of a jumper across the pins of J7 prior to a MCU RESET causes the S124 MCU to
forsake its on-chip flash memory single-chip mode startup routine. Instead, an on-chip flash
memory programming routine is executed to allow programming of on-chip data and code flash
from the USB Device port. See the S124 User’s Manual: Microcontrollers for details.
6.2 Battery and 5V Power Source Selection Jumpers
For testing of battery current to circuitry, there are several jumpers that may be used to
properly connect the battery and the non-J-Link circuitry. These jumpers are located
adjacent to the battery holder in the box marked BATTERY on the circuit board.
Table 3: Battery and 5V Power Jumpers
Source
Select
Desired Power
Condition
Jumper Installed
Comment
DIG 5-V derived 3.3 V J2-2 to J2-4
(Top Row Left-to Center)
Power to MCU VCC pins and biasing for
Boot Mode, NMI, SCL0 and SDA0 pins
DIG Battery supplied J2-6 to J2-4
(Top Row Right-to Center)
Power to MCU VCC pins and biasing for
Boot Mode, NMI, SCL0 and SDA0 pins
ANA 5-V derived 3.3 V J2-1 to J2-3
(Bottom Row Left to Center)
Power to MCU AVCC pin
ANA Battery supplied J2-5 to J2-3
(Bottom Row Right to Center)
Power to MCU AVCC pin
USB 5-V derived 3.3 V J18-1 to J18-2
(Left to Center)
Power to MCU USB and USB_LDO pins
USB Battery supplied J18-3 to J18-2
(Right to Center)
Power to MCU USB and USB_LDO pins
Note that a jumper might be temporarily replaced by multimeter ammeter leads to verify battery or 3.3-V
regulator current to each of these buses.
J3 will normally have a jumper installed across its pins, which may be replaced by multimeter ammeter leads to
check the current of the DIG line in the prior table. In addition, a resistor may be optionally installed at R4
position adjacent to J3 for a more permanent current sampling capability using a voltmeter. The resistor should
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be chosen to have less than a 0.1-V drop at maximum expected load. With a resistor installed at R4, the jumper
may be removed, since the connection will always be made.
J19 will normally have a jumper installed across its pins. Removing the jumper will remove power from the light
sensor, the temperature sensor, and sensor portions of the 3-axis accelerometer. See the accelerometer
datasheet for signals from the MCT to properly configure the accelerometer digital interface to minimize power
consumption. Jumper J19 may also be replaced by multimeter ammeter leads to check the current being supplied
to sensor loads.
J20 will normally have a jumper installed across its pins. Removing the jumper will remove power from the
Bluetooth module, the PMOD interface 3.3-V pin of J8, and the Seeed Grove I2C connector J16. Jumper J20 may
also be replaced by multimeter ammeter leads to check the current being supplied to peripheral loads.
The thumbwheel potentiometer, serial flash memory, POT1, CAN, and RS-232/RS-485 interface circuitry cannot
be powered from the battery.
6.3 RS-232/485 Transceiver Configuration
RS-232/485 configuration DIP switch S4 is located just above the BATTERY label on the
Main Board upper right region. Switch segments are marked RS-485/232 (DIP Switch
column “232” in Table 5), SLEW (DIP Switch column “SLW” in Table 5), SPEED (DIP Switch
column “SPD” in Table 5), and FD/HD (DIP Switch column “HALF” in Table 5).
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Table 4: RS-232/485 Configuration
DIP Switches
MCU Control
TX/RX Status
Max Speed
(Mbps)
Mode
232
SLW
SPD
HALF
P0
_2
RS_DEN
P
0_3
RS_ON
P4_10
RXD0
J4
-7
Y
J4
-8
Z
OFF
2
OFF
OFF
OFF
0
X
B-A3
-
-
20
422/485
1
TXD0#
TXD0
4
ON
0
X
B-A
-
-
1
H*
TXD0#
TXD0
ON
OFF/
ON
OFF
0
X
B-A
-
-
0.460/0.115
1
TXD0#
TXD0
ON
0
X
B-A
-
-
1
H
1
TXD0#
TXD0
ON
X
X
OFF
0
1
A#
-
-
0.460
232
1
TXD0#
TXD0
ON
0
A#
-
-
1
H*
TXD0#
TXD0
OFF
0
0
A#
-
-
0.460
1
TXD0#
DNU
5
ON
0
A#
-
-
1
H*
TXD0#
DNU
Notes:
1. P4_10/RXD0 has a weak pull-up, ensuring that when the receiver is disabled the receive data will mark
high.
2. Switch position OFF is the actuator bump nearest the BATTERY label, ON is nearest the HEADPHONES
STEREO JACK.
3. A is at J4 pin 5, B is at J4 pin 6
4. P4_11/TXD0 is the S124 UART output for the transceiver.
5. Do not use.
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Chapter 7 Connectivity
7.1 Connectors
7.1.1 5-V Power Barrel Jack
The 5-V Power Barrel Jack connector is one means of powering the Main Board. It accepts a 5.5-
mm OD x 2.1-mm ID x >=9.5-mm insertion barrel power plug. The center is positive polarity. The
connector is rated 2 A.
7.1.2 USB Device
The USB Micro-B connection jack connects the S124 MCU to an external USB Host,
FS capable, but does not accept power from the host. Host power voltage is checked
to detect connection.
Table 5: USB Device connector (J10)
USB Device Connector
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1 VBUS, +5-VDC, 15-kΩ- resistor connected in
line
P4_7 P4_7/USB_VBUS
2
Data-
USB_DM
USB_DM
3
Data+
USB_DP
USB_DP
4
USB ID, jack internal switch, cable inserted
-
(Not connected)
5
Ground
VSS
(Circuit Ground)
7.1.3 RS-232/485 and CAN
The RS-232/485 and CAN connector header connects the ISL41387 RS-232/485
transceiver and the IFX1050 CAN transceiver to the mating screw-terminal-block
adapter supplied with the DK-S124 kit.
The S124 MCU interfaces with the ISL41387 RS-232/485 transceiver are shown in
Table 7.
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Table 6: RS-232/485 Transceiver
ISL41387 RS-232/485 Transceiver
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
RA
Receive Channel A
P4_10
P4_10/RXD0
RB
(NOT CONNECTED)
No Connect
Not Applicable
RXEN Receive Enable, logically compared to
RXEN# (Controlled by S4 FD/HD switch)
No Connect Not Applicable
RXEN#, DEN
Not Receive Enable, Transmit Enable
P0_2
P0_2-RS_DEN
DY
Transmitted Data Input
P4_11
P4_11/TXD0
SLEW RS-485 slew limit setting
(Controlled by S4 SLEW switch)
No Connect Not Applicable
SPB RS-485 speed control setting
(Controlled by S4 SPEED switch)
No Connect Not Applicable
ON In RS-232 mode only, pin HIGH enables
charge pumps for supply voltage boost
P0_3 P0_3-RS_ON
485/Not232 RS-232/485 mode selection
(Controlled by S4 RS-485/232 switch)
No Connect Not Applicable
The S124 MCU interfaces with the IFX1050 CAN transceiver is shown in Table 8.
Table 7: CAN Transceiver
IFX1050 CAN Transceiver
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
TXD
Data for Transmission
P1_9
P1_9/CTX0
RXD
Received Data
P1_10
P1_10/CRX0
The RS-232/485 and CAN connector header interfaces the ISL41387 RS-232/485 transceiver and the IFX1050
CAN transceiver is shown in Table 9.
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Table 8: RS-232/485 and CAN connector (J4)
RS-232/485 and CAN Connector
Transceiver
Pin
Description
Logical
Pin(s)
Function Name(s)
1
CANH, CAN high
CANH
IFX1050, High line I/O
2
CANL, CAN low
CANL
IFX1050, Low line I/O
3
Not Connected
No Connect
Not Applicable
4
Ground
GND
(Circuit ground, both Xcvrs)
5 A, RS-232 channel 1 input,
RS-485 inverting input
A1 ISL41387 receive A
6 B, RS-232 channel 2 input,
RS-485 non-inverting input
B1 ISL41387 receive B
7 Y, RS-232 channel 1 output,
RS-485 inverting output
Y1 ISL41387 transmit Y
8 Z, RS-232 channel 2 output,
RS-485 non-inverting output
Z1 ISL41387 transmit Z
7.1.4 Stereo Headphone Jack
The 3.5-mm stereo output jack provides left output to the tip conductive region, right
output to the middle conductive region, and output return to the cable-end conductive
region of a miniature stereo phone plug. The input signal supplied to the headphone
amplifier is from a single DAC on the S124 MCU, so only monaural sound will be possible.
Table 9: Stereo Headphone jack (J11)
Stereo Headphone Connector
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
Common headphone return, sleeve
VSS
(Circuit Ground)
2
Left headphone signal, plug tip
P0_14
P0_14/DA0
3
Right headphone signal, plug middle ring
P0_14
P0_14/DA0
7.1.5 J-Link USB and Power
The USB Micro-B connection jack connects the J-Link MCU to an external USB Host, FS
capable, and accepts power from the host, allowing re-programming and debug of the
S124 MCU firmware.
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Table 10: J-Link USB connector (J14)
J-Link USB Connector
J-Link OB Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
VBUS, +5VDC, connected to +5VUSBJ
-
(Not connected)
2
Data-
USB_DM
USB_DM
3
Data+
USB_DP
USB_DP
4
USB ID, jack internal switch, cable inserted
-
(Not connected)
5
Ground
VSS
(Circuit Ground)
7.1.6 S124 Programming and Debug
The 1.27-mm pitch 2x5-pin polarized header has pin 7 removed to allow use with a pin-7-
plugged debug connector. The S124 Programming and Debug connector allows programming
and debug of the S124 MCU using Serial Wire interface only.
Table 11: S124 Programming and Debug connector (J13)
S124 Programming and Debug Connector
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
ARM VCC, connected to +3V3 bus
-
(config. may connect to VCC)
2
ARM SWDIO, Serial Wire Debug Data I/O
P1_8
P1_8/SWDIO
3
ARM GND
VSS
(Circuit Ground)
4
ARM SWCLK, Serial Wire Debug Clock
P3_0
P3_0/SWCLK
5
ARM GND
VSS
(Circuit Ground)
6 ARM SWO, Serial Wire Trace Output
(optional)
- (Not connected)
7
(Pin removed)
N/A
N/A
8
ARM Not Used
-
(Not connected)
9
ARM GND
VSS
(Circuit Ground)
10
ARM RESET#, Pin low resets target CPU
RES#
RESET#
7.1.7 J-Link JTAG Programming and Debug
The Tag-Connect 14-pin connection pattern, without retainer clip holes, is a JTAG programming
interface to the Renesas RX621 J-Link On-Board MCU. A Tag-Connect 14-pin adapter cable will properly mate
with this pattern during programming. A friction clip may be needed to hold the cable’s spring-pin-connector
to the board.
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Table 12: J-Link JTAG Programming and Debug connector (J15)
S124 Programming and Debug Connector
J-Link OB Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
JTCK, JTAG test clock signal
P27
TCK
2
GND
VSS
(Circuit Ground)
3
JTRST, JTGA test reset signal
P34
TRST
4
JTEMLE, on-chip emulator enable
EMLE
EMLE
5
JTDO, JTAG test data out
P26
TDO
6
Unused
-
(Not connected)
7
Unused
-
(Not connected)
8
connected to +3V3 bus
VCC
MCU power
9
JTMS, JTAG test mode select
P31
TMS
10
Unused
-
(Not connected)
11
JTDI, JTAG test data in
P30
TDI
12
GND
VSS
(Circuit Ground)
13 JRES#, resistor pull-up to +3V3 bus, pin low
resets J-Link OB MCU
RES# Not Reset
14
GND
VSS
(Circuit Ground)
7.1.8 Shield-Style Header Connection
The shield-style header connection consists of two 2.54-mm-pitch 22-pin headers with their topmost and
bottom-most pins aligned horizontally and parallel to each other with 57.4-mm separation. These
connectors are located on either side of the S124 MCU. 5-V and 3.3-V power buses, as well as ground, are
accessible on the pins of these connectors, as are many of the S124 MCU port pins. S124 MCU port pins that
are load-sensitive (such as pins used for capacitive sensing), or interface high speed data and require
impedance control (such as USB) are not made accessible here.
Table 13: Shield-Style Header connectors (J5 and J6)
Shield-Style Header Connectors
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
J5-1
connected to +5V bus
-
(Not connected)
J5-2
connected to +3V3 bus
VCC
MCU power
J5-3
light sensor analog output
P0_0
P0_0/AN000
J5-4
temperature sensor analog output
P0_1
P0_1/AN001
J5-5
ISL41387 RXEN# and DEN pins control
P0_2
P0_2-RS_DEN
J5-6
ISL41387 ON pin control
P0-3
P0-3-RS_ON
J5-7
User switch S2 monitoring
P0_4
P0_4/IRQ3
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Shield-Style Header Connectors
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
J5-8
SPI communications for Bluetooth module,
serial flash memory, SPI&I2C connector
P1_0 P1_0/MISOA
J5-9
SPI communications for Bluetooth module,
serial flash memory, SPI&I2C connector
P1_1 P1_1/MOSIA
J5-10
SPI communications for Bluetooth module,
serial flash memory, SPI&I2C connector
P1_2 P1_2/RSPCKA
J5-11 SPI communications chip select, serial flash
memory
P1_3 P1_3/SSLA0-FLASH_CS#
J5-12
PMOD Interface, J7-7 monitoring
P1_4
P1_4/IRQ1
J5-13 SPI communications chip select, Bluetooth
module
P1_5 P1_5/SSLA2-BLE_CS#
J5-14 SPI communications chip select, SPI&I2C
connector
P1_6 P1_6/SSLA3
J5-15
Driven HIGH by S123 MCU to light LED3
P1_7
P1_7-LED3
J5-16
CAN transmit signal to IFX1050
P1_9
P1_9/CTX0
J5-17
CAN received signal from IFX1050
P1_10
P1_10/CRX0
J5-18
PMOD interface, J7-8 (firmware defined)
P1_11
(currently unassigned)
J5-19
Reset command to Bluetooth module
P1_13
P1_13-BLE_RST#
J5-20
PMOD configurable interface
1
P2_4
P2_4/SCK9
J5-21
PMOD configurable interface
1
P2_5
P2_5/CTS9
J5-22
GND
VSS
(Circuit Ground)
J6-1
Connected to +5V bus
-
(Not connected)
J6-2
Connected to +3V3 bus
VCC
MCU power
J6-3
Connected to +VIN bus
-
(Not connected)
J6-4
S124 MCU reset control
RESET#
RESET#
J6-5
User Potentiometer voltage monitor
P0_12
P0_12/AN007
J6-6 MAX9814 Microphone output signal
monitor
P0_13 P0_13/AN008
J6-7 NCP 2809 input (both channels), stereo
headphone jack signal
P0_14 P0_14/DA0
J6-8 S1 pulls this LOW, the BMA250 uses this as
an I2C service request line
P2_6 P2_6/IRQ0/ACCEL/S1/J6-8
J6-9
PMOD interface, J7-9 (firmware defined)
P3_4
(currently unassigned)
J6-10 I2C on SPI&I2C connector, Seeed Grove
connector, BMA250 accelerometer
P4_0 P4_0/SCL0
J6-11 I2C on SPI&I2C connector, Seeed Grove
connector, BMA250 accelerometer
P4_1 P4_1/SDA0
J6-12
Service request from Bluetooth module
P4_2
P4_2/IRQ4-BLE_IRQ#
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Shield-Style Header Connectors
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
J6-13
PMOD interface, J7-10 (firmware defined)
P4_3
(currently unassigned)
J6-14
PMOD configurable interface
1
P4_8
P4_8/RXD9
J6-15
PMOD configurable interface
1
P4_9
P4_9/TXD9
J6-16
RS-232/485 received signal from ISL41387
P4_10
P4_10/RXD0
J6-17
RS-232/485 transmit signal to ISL41387
P4_11
P4_11/TXD0
J6-18
Driven HIGH by S123 MCU to light LED1
P5_1
P5_1-LED1
J6-19
Driven HIGH by S123 MCU to light LED2
P5_2
P5_2-LED2
J6-20 Unassigned non-maskable interrupt for
S124
P2_0 P2_0/NMI
J6-21
Boot mode configuration, see section 6.1
P2_1
P2_1/MD
J6-22
GND
VSS
(Circuit Ground)
Notes:
Function naming convention is port-name followed by ‘/’ for an MCU built-in configurable feature, or by ‘-‘
for an MCU firmware-defined feature, followed by the abbreviation for the feature for that pin. Some pins
use an MCU built-in configurable feature that additionally is specially and additionally modified by firmware
to a specific purpose. These will include both types of feature naming in sequence, “P1_3SSLA0-FLASH_CS#”,
for example.
1. The four ports, P2_5, P4_9, P4_8, and P2_4 are arranged on the PMOD connector and have
configurability to allow configuring the J7 PMOD interface as a Type 1 GPIO interface, a Type 2A
expanded SPI interface, or a Type 4A expanded UART interface. See section 7.1.11 for details.
7.1.9 Seeed Grove I2C Interface
The 4-pin Seeed Grove specialty connector is provided for ready connection to Seeed Grove
I2C I/O modules for demonstration of various interface capabilities. Note that although P4_0
and P4_1 can be re-configured for non-I2C use, doing so will also affect the accelerometer
and the SPI&I2C connector interfaces.
Table 14: Seeed Grove I2C connector (J16)
Seeed Grove I2C Connector
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
Circuit ground
VSS
(Circuit Ground)
2
VPER +3.3V bus
-
(config. may connect to VCC)
3
I2C serial clock
P4_0
P4_0/SCL0
4
I2C serial data
P4_1
P4_1/SDA0
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7.1.10 SPI&I2C Interface
The SPI&I2C interface connector is an 8-pin 2.54-mm-pitch single-column header
with pin connections labelled on the PCB overlay.
Table 15: SPI&I2C connector (J9)
SPI&I2C Connector
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
+3V3 power bus
-
(Config. may connect to VCC)
2
SPI communications chip select
P1_6
P1_6/SSLA3
3
SPI Master-In Slave-Out
P1_0
P1_0/MISOA
4
SPI Master-Out Slave-In
P1_1
P1_1/MOSIA
5
SPI serial clock
P1_2
P1_2/RSPCKA
6
I2C serial clock
P4_0
P4_0/SCL0
7
I2C serial data
P4_1
P4_1/SDA0
8
Circuit ground
VSS
(Circuit Ground)
7.1.11 PMOD Interface
The PMOD interface connector is a two-column six-row (12-pin) 2.54-mm-pitch
connector with selectable power between +5 V and VPER (+3.3 V with jumper
disconnect). The interface is configurable to several alternate PMOD Standard interface
configurations
A PMOD Type 1 General Purpose Input Output (GPIO) interface is achieved by connecting the daughter-card
to the 6 pins closest to the PCB, daughter card pin 1 on the same end as J7 pin 1 (square pad on J7 soldered
pins) will properly insert daughter pin 1 to J7-6.
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Table 16: PMOD connector (J7), Type 1
PMOD Connector, Type 2A (GPIO)
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
(Not connected)
2
(Not connected)
3
(Not connected)
4
(Not connected)
5
(Not connected)
6
(Not connected)
7 PMOD input/output 1 (IO1) P1_4 (Discrete firmware controlled
input/output)
8 PMOD input/output 2 (IO2) P1_11 (Discrete firmware controlled
input/output)
9 PMOD input/output 3 (IO3) P3_4 (discrete firmware controlled
input/output)
10 PMOD input/output 4 (IO4) P4_3 (discrete firmware controlled
input/output)
11
GND
VSS
(Circuit Ground)
12 PMOD VCC, PMODA_PWR, configurable for
+5V or VPER (+3.3V)
- (depends on configuration)
A PMOD Type 2A expanded Serial Peripheral Interface (SPI) is achieved by plugging the daughter card pin 1
into J7 pin 1. Firmware must properly configure all applicable pins.
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Table 17: PMOD connector (J7), Type 2A
PMOD Connector, Type 2A (expanded SPI)
S124 Microcontroller
Pin
Description
Logical Pin(s)
Function Name(s)
1
PMOD slave select (SS) signal
P2_5
P2_5/CTS9 (to /SS9A)
2
PMOD master out slave in (MOSI) signal
P4_9
P4_9/TXD9 (to /MOSI9)
3
PMOD master in slave out(MISO) signal
P4_8
P4_8/RXD9 (to /MISO9)
4
PMOD serial clock (SCK) signal
P2_4
P2_4/SCK9
5
GND
VSS
(Circuit Ground)
6 PMOD VCC, PMODA_PWR, configurable
for +5V or VPER (+3.3V)
- (Depends on configuration)
7
PMOD interrupt (INT) signal
P1_4
P1_4/IRQ1
8 PMOD RESET command P1_11 (Discrete firmware controlled
output)
9
PMOD unspecified signal
P3_4
(Discrete firmware controlled)
10
PMOD unspecified signal
P4_3
(Discrete firmware controlled)
11
GND
VSS
(Circuit Ground)
12 PMOD VCC, PMODA_PWR, configurable
for +5V or VPER (+3.3V)
- (Depends on configuration)
A PMOD Type 4A expanded Universal Asynchronous Receiver Transmitter (UART) is achieved by plugging the
daughter card pin 1 into J7 pin 1. Firmware must properly configure all applicable pins.
Always check the jumper position prior to inserting a PMOD. Applying 5 V
to a 3.3-V PMOD may damage the PMOD and potentially the DK-S124. The
power to this port is not fuse protected.
The PMOD MCU pins are not 5-V tolerant. Even though some PMODs
require 5 V to be powered (using the 5 position of the jumper), do not
connect 5 V or higher signals to the MCUconnected signals on this port
directly. If, for example, a -fulllevel- RS-232 port is desired, use the Digilent
PMOD RS-232X which plugs into the connector and translates these
voltages.
Table 18: PMOD connector (J7), Type 4A
PMOD Connector, Type 4A (expanded UART)
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
1
PMOD clear to send (CTS) signal
P2_5
P2_5/CTS9
2
PMOD transmit data (TXD) signal
P4_9
P4_9/TXD9
3
PMOD received data (RXD) signal
P4_8
P4_8/RXD9
4 PMOD request to send (RTS) signal P2_4
P2_4/SCK9 (to discrete
firmware controlled output,
RTS)
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PMOD Connector, Type 4A (expanded UART)
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
5
GND
VSS
(Circuit Ground)
6 PMOD VCC, PMODA_PWR, configurable for
+5V or VPER (+3.3V)
- (Depends on configuration)
7
PMOD interrupt (INT) signal
P1_4
P1_4/IRQ1
8 PMOD RESET command P1_11 (Discrete firmware controlled
output)
9 PMOD unspecified signal P3_4 (Discrete firmware
controlled)
10 PMOD unspecified signal P4_3 (Discrete firmware
controlled)
11
GND
VSS
(Circuit Ground)
12 PMOD VCC, PMODA_PWR, configurable for
+5V or VPER (+3.3V)
- (Depends on configuration)
7.2 Human-Machine Interface
7.2.1 User Touch Buttons
Two capacitive touch buttons located in the upper left
region of the Main Board are provided for user
programmable control.
Table 19: User Touch Buttons
User Touch Button
S124 Microcontroller
Designator
Description
Logical
Pin(s)
Function Name(s)
TS1
User capacitive touch button 1 (leftmost)
P0_10
P0_10/TS30
TS2
User capacitive touch button 2 (rightmost)
P3_1
P3_1/TS9
7.2.2 User Touch Slider
One capacitive 5-segment touch slider, TSL1, is
provided for user programmable control.
Table 20: User Touch Slider
User Touch Slider
S124 Microcontroller
Designator
Description
Logical Pin(s)
Function Name(s)
TSL1-1
User capacitive slider segment 5 (leftmost)
P3-2
P3-2/TS8
TSL1-2
User capacitive slider segment 4 (left-center)
P3_3
P3_3/TS2
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User Touch Slider
S124 Microcontroller
Designator
Description
Logical Pin(s)
Function Name(s)
TSL1-3
User capacitive slider segment 3 (center)
P5_0
P5_0/TS27
TSL1-4
User capacitive slider segment 2 (right-center)
P0_15
P0_15/TS28
TSL1-5
User capacitive slider segment 1 (rightmost)
P0_11
P0_11/TS31
-
Capacitive Sensor Ground Reference
P1_12
P1_12/TSCAP
7.2.3 User Push-Button Switches
Near the bottom right corner of the Main Board in the User Input/Output region are two momentary push-
button switches, S1 and S2, provided for programmable control.
Figure 9: User Input/Output Region of Main Board
Table 21: User Push-Button Switches
User Touch Button
S124 Microcontroller
Designator
Description
Logical
Pin(s)
Function Name(s)
S1 Push Button Switch 1 (leftmost), LOW
when pressed
P2_6 P2_6/IRQ0/ACCEL/S1/J6-8
S2 Push Button Switch 2 (rightmost), LOW
when pressed
P0_4 P0_4/IRQ3
Note that the interface for S1 also includes the interrupt interface for the accelerometer.
7.2.4 User LEDs (3)
Immediately above the user push button switches are one red, one yellow, and one green LED provided for
user programmable control
Table 22: User Push-Button Switches
User LED
S124 Microcontroller
Designator
Description
Logical
Pin(s)
Function Name(s)
LED1
LED 1 (leftmost, red), power from MCU
P5_1
P5_1-LED1
LED2
LED 2 (center, yellow), power from MCU
P5_2
P5_2-LED2
LED3 LED 3 (rightmost, green), power from
MCU
P1_7 P1_7-LED3
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Jun 8, 2016
7.2.5 User Potentiometer
Immediately to the right of the user push button switches is one 10-kΩ thumbwheel potentiometer with its
voltage tap fed to MCU’s ADC.
Table 23: User Potentiometer
User Potentiometer
S124 Microcontroller
Designator
Description
Logical
Pin(s)
Function Name(s)
POT1
10-kΩ thumbwheel potentiometer
P0_12
P0_12/AN007
7.2.6 Reset Push-Button Switch
A momentary switch located near the center of the lower edge of the Main Board, S3, will cause
an S124 MCU reset when pressed.
Table 24: Reset Switch
Reset Switch
S124 Microcontroller
Designator
Description
Logical
Pin(s)
Function Name(s)
S3
Push Button Switch, LOW when pressed
RESET#
RESET#
7.3 Main Board Devices
7.3.1 Serial Flash Memory
The Micron N25Q256A serial flash memory communicates with the SPI A interface of the S124 MCU.
Table 25: Serial Flash Interface (U7)
Serial Flash
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
S#
Not Chip Select, weak pull-up to VCC
P1_3
P1_3/SSLA0-FLASH_CS#
C
SPI Clock, weak pull-down to VSS
P1_2
P1_2/RSPCKA
DQ0
S124 Output, weak pull-up to VCC
P1_1
P1_1/MOSIA
DQ1
N25Q256A Output, weak pull-up to VCC
P1_0
P1_0/MISOA
DQ2
Not Write, weak pull-up to VCC
-
(Not connected)
DQ3
Not Hold, weak pull-up to VCC
-
(Not connected)
VCC
+3V3 bus
(VCC)
(U7 not powered by battery)
VSS/PAD
Ground return
VSS
(circuit ground)
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7.3.2 C-Max CMM-9301-V4.4
The Bluetooth-Low-Energy and Bluetooth Standard capable C-Max CMM-9301-V4.4 module includes an on-
module antenna, and communicates with the SPI A interface of the S124 MCU.
Table 26: Bluetooth LE (RF1)
C-Max CMM-9301-V4.4
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
CS#
Not Chip Select, weak pull-up to VCC
P1_3
P1_5/SSLA2-BLE_CS#
SCK
SPI Clock, weak pull-down to VSS
P1_2
P1_2/RSPCKA
SDI
S124 Output, weak pull-up to VCC
P1_1
P1_1/MOSIA
SDO
CMM-9301 Output, weak pull-up to VCC
P1_0
P1_0/MISOA
RST
RESET input, weak pull-down to VSS
P1_13
P1_13-BLE_RST#
IRQ
Service request, weak pull-up to VCC
P4_2
P4_2/IRQ4-BLE_IRQ#
SEL Interface Selection (0=UART, 1=SPI), left
open
- (Not connected)
VCC
VPER (+3.3V) bus
(VCC)
(depends on configuration)
GND
Ground return
VSS
(circuit ground)
7.3.3 Maxim MAX9814 with MEMS microphone
The Maxim MAX9814 microphone preamplifier (U10) with a supplied MEMS microphone (MK1) on the Main
Board provides an amplified audio signal relative to omnidirectional sound levels near the circuit board. All
gain, shutdown, AGC, and other settings are hard-wired on the Main Board. Unpopulated resistor pads for
R24 and R25 are supplied to allow modification of the AGC and gain settings. The audio signal output by the
MAX9814 is provided to the S124 at P0_13/AN008 ADC input.
7.3.4 Avago ADPS-9005
The Avago ADPS-9005 (U8) provides a current output proportional to ambient light at the sensor, sampled
through a 1 kΩ resistor, then provided to the S124 MCU at P0_0/AN000 ADC input. Normal light ranges will
provide the MCU ADC 40 mV at 100 lux (dim office lighting), 0.4 V at 1 kilolux (sunlight, overcast), and will
saturate around 2.3 V at or above 6 kilolux (sunlight in a shaded area).
7.3.5 Analog Devices TMP35
The Analog Devices TMP35 (U9) provides a voltage output proportional to circuit board temperature at the
sensor, provided to the S124 MCU at P0_1/AN001 ADC input. The voltage to the MCU ADC will be
Vadc = T x 0.01 V
where T is temperature in degrees Celsius in the range 10C to 125C and Vadc is the voltage delivered to the
MCU ADC.
7.3.6 Bosch BMA250E
The Bosch BMA250E (U13) is a SPI or I2C (used on DK-S124) interface 3-axis accelerometer with ranges from
+/- 2g to +/-16g selectable, low pass filtering selectable, a sample FIFO, extremely low power operating, and
several modes to further reduce power. This chip provides two separate power buses, VDD for analog and
internal sampling processes, and VDDIO for serial interface support. To avoid damage, the VDDIO power is
DK-S124 User’s Manual
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Jun 8, 2016
supplied from the +3V3MCU bus, and the VDD power is supplied from the VSNS bus. This device has an I2C
address of 0011000b (address byte 0x30 to OR with write bit).
Table 27: 3-Axis Accelerometer (U13)
BMA250E
S124 Microcontroller
Pin
Description
Logical
Pin(s)
Function Name(s)
INT1
Service request, weak pull-up to VCC
P2_6
P2_6/IRQ0/ACCEL/S1/J6-8
INT2
(Not used, no connection)
-
(Not connected)
CSB
(Not used, no connection)
-
(Not connected)
SDO
Address select, connected to ground
-
(Not connected)
SDx
I2C serial data, weak pull-up to VCC
P4_1
P4_1/SDA0
SCx
I2C serial clock, weak pull-up to VCC
P4_0
P4_0/SCL0
PS
Protocol select, connected to VDDIO for I2C
-
(Not connected)
VDDIO
+3V3MCU bus
VCC
S124 MCU main power bus
VDD
VPER (+3.3V) bus
(VCC)
(Depends on configuration)
GND
Ground return
VSS
(Circuit ground)
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Glossary
R12UM0006EU0100 Rev.1.00 Page 39 of 40
Jun 8, 2016
Chapter 8 Glossary
8.1 Abbreviations and Acronyms
A ampere
AC Alternating Current
Accel. Acceleration
ADC Analog-to-Digital Converter
Amp Amplifier
API Application Programming Interface
ARM Advanced RISC Machine
BLE Bluetooth Low Energy
C (unit) degrees Celsius
CAN Controller Area Network
CE EU conformity marking for products
cm centimeter
Comms Communications
Conv. Converter
CPU Central Processing Unit
CSA Canadian Standards Association
DAC Digital-to-Analog Converter
dB decibel
DC Direct Current
DCR DC Resistance
DFN Dual Flat NoLead- package
EC European Commission
EMC Electromagnetic Compatibility
ESD Electrostatic Discharge
EU European Union
FCC U.S. Federal Communications
Commission
FET Field Effect Transistor
FIFO First-In First-Out (memory buffer)
FS Full Speed (USB communications)
GND ground bus
GPIO General Purpose Input-Output
GUI Graphical User Interface
HMI Human Machine Interface
I2C Inter-Integrated Circuit Serial Comms Bus
IC Integrated Circuit
I/O Input / Output
IEEE Institute of Electrical and Electronics
Engineers
IoT Internet of Things
IRQ Interrupt Request
J-Link OBSegger J-Link On Board
JTAG Joint Test Action Group (debug/program
port)
kΩ 103 Ohms
KB Kilobyte (1024 bytes = 1 KB)
Kb Kilobit (1024 bits = 128 bytes)
kbps kilobit per second
kB kilobyte (1000 bytes = 1 kB)
kHz 103 Hertz
LDO Low Drop Out regulator
LED Light Emitting Diode
mΩ 10-3 Ohms
mA 10-3 Amperes
Max Maximum
Mbps Mega-bit per second
MCU Microcontroller Unit
Meas. Measurement
MEMS microelectromechanical system
MHz 106 Hertz
Mic Microphone
Min Minimum
mm millimeter
ms millisecond
mW milliwatt
mΩ milliohm
OEM Original Equipment Manufacturer
PC Personal Computer
DK-S124 User’s Manual
Glossary
R12UM0006EU0100 Rev.1.00 Page 40 of 40
Jun 8, 2016
PCB Printed Circuit Board
PMOD™ Digilent Peripheral Module interface
Pot. Potentiometer
PSE Japanese appliance safety marking
PSRR Power Supply Rejection Ratio
RH Relative Humidity in percent
RISC Reduced Instruction Set Computer
RS-232Serial Comms Bus, bi-polar UART
RS-485Serial Comms Bus, differential UART
RTCC Real Time Clock-Calendar
Seeed Seeed Technology Co., Ltd., Shenzen,
China
SPI Serial Peripheral Interface
SPI and I2C Serial Peripheral Interface and Inter-
Integrated Circuit
SRAM Static Random Access Memory
SWD Serial Wire Debug
TBD To Be Determined (pending)
Temp. Temperature
Tja Temperature junction-to-ambient
TV Television
Typ Typical
UART Universal Asynchronous
Receiver-Transmitter
μA microampere
UL Underwriters Laboratories
USB Universal Serial Bus
V Volt
VAC Volts AC
Vbr Voltage breakdown
VDC Volts DC
VDD drain voltage
Vmax maximum voltage
Vmin minimum voltage
VSS source voltage
W Watt
WEEE EC Waste Electrical and Electronic
Equipment Directive
WiFi Wireless local area network, IEEE 802.11
based
µF 10-6 Farad
8.2 Port Numbering
Renesas datasheets for MCUs generally refer to ports with numbers like “P001”, “P110”, and similar. This
document generally refers to these ports as “P0_1” and “P1_10” respectively to add clarity. Port 5 bit 15
would be referred to in the datasheet as “P515”, in this manual as “P5_15”. The two forms should be
considered identical in meaning.
Renesas Synergy
TM
Development Kit DK-S124 Disclaimer
By using this DK-S124, the user accepts the following terms, which are in addition to, and control in the event of
disagreement,
with Renesas’ General Terms and Conditions available at http://am.renesas.com/legal/legaltc.html
:
The DK-S124 is not guaranteed to be error free, and the entire risk as to the results and performance of the DK-
S124 is assumed
by the User. The DK-S124 is provided by Renesas on an “as is” basis without warranty of any kind
whether express or implied,
including but not limited to the implied warranties of satisfactory quality, fitness for a
particular purpose, title and
non-infringement of intellectual property rights with regard to the DK-S124
.
Renesas
expressly disclaims all such warranties.
Renesas does not consider the DK-S124 a finished product and therefore the
DK-S124 may not yet comply with some
requirements applicable to finished products, including, but not limited to
recycling (WEEE), CE, UL, restricted substances
(ROHS), FCC, FEE, and electromagnetic compatibility regulations.
Renesas or its affiliates shall in no event be liable for any
loss of profit, loss of data, loss of contract, loss of business,
damage to reputation or goodwill, any economic loss, any
reprogramming or recall costs (whether the foregoing
losses are direct or indirect) nor shall Renesas or its affiliates be liable
for any other direct or indirect special,
incidental or consequential damages arising out of or in relation to the use of this
DK-S124, even if Renesas or its
affiliates have been advised of the possibility of such damages.
Renesas has used reasonable care in preparing the information included in this document, but Renesas does not
warrant that
such information is error free nor does Renesas guarantee an exact match for every application or
parameter to part numbers
designated by other vendors listed herein. The information provided in this document is
intended solely to enable the use of
Renesas products. No express or implied license to any intellectual property
right is granted by this document or in connection
with the sale of Renesas products. Renesas reserves the right to
make changes to specifications and product descriptions at any
time without notice. Renesas assumes no liability
for any damages incurred by you resulting from errors in or omissions from
the information included herein.
Renesas cannot verify, and assumes no liability for, the accuracy of information available on
another company’s
website.
Development Kit DK-S124 v2.0 User’s Manual: Hardware
Publication Date: Rev.1.00 Jun 8, 2016
Published by: Renesas Electronics Corporation
http://www.renesas.com
Refer to "http://www.renesas.com/" for the latest and detailed information.
Renesas Electronics America Inc.
2801 Scott Boulevard Santa Clara, CA 95050-2549, U.S.A.
Tel: +1-408-588-6000, Fax: +1-408-588-6130
Renesas Electronics Canada Limited
9251 Yonge Street, Suite 8309 Richmond Hill, Ontario Canada L4C 9T3
Tel: +1-905-237-2004
Renesas Electronics Europe Limited
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Tel: +44-1628-585-100, Fax: +44-1628-585-900
Renesas Electronics Europe GmbH
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Tel: +49-211-6503-0, Fax: +49-211-6503-1327
Renesas Electronics (China) Co., Ltd.
Room 1709, Quantum Plaza, No.27 ZhiChunLu Haidian District, Beijing 100191, P.R.China
Tel: +86-10-8235-1155, Fax: +86-10-8235-7679
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Unit 301, Tower A, Central Towers, 555 Langao Road, Putuo District, Shanghai, P. R. China 200333
Tel: +86-21-2226-0888, Fax: +86-21-2226-0999
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Tel: +852-2265-6688, Fax: +852 2886-9022
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Tel: +886-2-8175-9600, Fax: +886 2-8175-9670
Renesas Electronics Singapore Pte. Ltd.
80 Bendemeer Road, Unit #06-02 Hyflux Innovation Centre, Singapore 339949
Tel: +65-6213-0200, Fax: +65-6213-0300
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Unit 1207, Block B, Menara Amcorp, Amcorp Trade Centre, No. 18, Jln Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia
Tel: +60-3-7955-9390, Fax: +60-3-7955-9510
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No.777C, 100 Feet Road, HALII Stage, Indiranagar, Bangalore, India
Tel: +91-80-67208700, Fax: +91-80-67208777
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12F., 234 Teheran-ro, Gangnam-Gu, Seoul, 135-080, Korea
Tel: +82-2-558-3737, Fax: +82-2-558-5141
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Colophon 4.0
Development Kit DK-S124 v2.0
User’s Manual: Hardware
R12UM0006EU0100
