Rohm SENSEKIT1-EVK-101 User manual

Sensor
Evaluation Kit
USER MANUAL
ROHM-SENSEKIT1-EVK-101
SENSEKIT2-EVK-101

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Contents
1. General Information and Introduction ........................................................................................ 3
1.1 Introduction .......................................................................................................................... 3
1.2 Quick Start Guide ................................................................................................................. 3
1.3. Supported Sensor Products .............................................................................................. 4
2. Base Board Overview ................................................................................................................. 5
2.1. Hardware ............................................................................................................................. 5
2.2. Software .............................................................................................................................. 9
3. Breakout Board Overview .......................................................................................................... 10
3.1. Hall Sensor Breakout Board.............................................................................................. 10
3.2. Ambient Light Sensor Breakout Boards ........................................................................... 12
3.2.1. BH1620FVC Breakout Board ................................................................................12
3.2.2. BH1721FVC Breakout Board ............................................................................... 14
3.3 UV Sensor Breakout Board .................................................................................................. 16
3.3.1. ML8511 Breakout Board ...................................................................................... 16
3.4. MEMS Sensor Breakout Board ......................................................................................... 18
3.4.1. KMX61 Breakout Board ....................................................................................... 18
3.5. Temperature Sensor Breakout Board ................................................................................ 21
3.5.1. BDE0600G Breakout Board ................................................................................. 21
Appendix A: Programming the Base Board Instructions ........................................................... 23

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1. General Information and Introduction
1.1 Introduction
The Sensor Evaluation Kit is designed to test the functional operation of various sensor types. It includes one Base Board
and several Breakout Boards. The Base Board is a controller board with a LAPIS MCU. The Breakout boards are sensor
boards containing different types of sensor ICs.
This guide will help you understand how to connect Breakout Boards to the Base Board. It will also show how the Base
Board obtains data from sensors, and converts and displays the results on a computer screen.
1.2 Quick Start Guide
Step 1: Check to make sure the latest drivers are installed on your computer for communicating with the Base Board
(LAPIS MCU) via USB. If not, please go to http://www.ftdichip.com/Support/Documents/InstallGuides.htm to access the
driver files.
Step 2: Verify that the jumper settings are set as follows:
• Power Selection Switch (J1) is in the VBUS position (position 3).
• Reset Selection Header (J2) is in the USR_RST position (connect pins 1 and 2).
Step 3: Plug the Sensor Breakout Board into the Base Board.
Step 4: Connect the Base Board + Breakout Board to the computer via USB cable.
Step 5: Run the Serial Terminal tool (PuTTy), configure PuTTy to run in Serial mode with a data rate of 9600bps .The output
data will be displayed on the terminal screen. If no output is displayed, please go to Appendix A: Programming the Base
Board Instructions to program/re-program the Base Board.
Figure 1: Sensor Evaluation Kit
Figure 2: Base Board and Breakout Board Connection

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Figure 3: Pu TTy Configuration
Figure 4: Base Board Sample Output (without Breakout Board)
1.3. Supported Sensor Products
Part Number Sensor Type Sensor Control Code
BU52011HFV Hall Sensor 2
BH1620FVC Ambient Light Sensor 5
BH1721FVC 8
ML8511 UV Sensor 10
KMX61 MEMs 16
BDE0600G Temperature Sensor 22
Table 1: Supported Sensor Products

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2. Base Board Overview
2.1. Hardware
The block diagram of the Base Board is shown in Figure 5. LAPIS Semiconductor's ML610Q112 MCU is used to interface
with the Breakout Board via Sensor Interface Headers and with the PC via the UART-to-USB IC FT230XS-R.
Figure 5: Base Board Hardware Block Diagram
Figure 6: Base Board (Top View)

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Designator Position Description
J1 1 (EXT_PWR) External Power Source selected
2 (OPEN) No Power Source selected
3 (VBUS) VBUS Source selected
J2 2-1 (USR_RST) User Reset selected
2-3 (nE_RST) nanoEASE Reset selected
Table 2: Base Board - Jumper/Switch Configurations
The ML610Q112 is a high-performance 8bit CMOS microcontroller that incorporates a variety of peripheral circuits, such as
timers, PWM/UART/I2C bus interface (master/slave), synchronous serial port, voltage level supervisor, analog comparators,
and 10-bit successive approximation type A/D converter, around an 8bit nX-U8/100 CPU. The nX-U8/100 is capable of
efficient instruction execution at 1 instruction per clock cycle via parallel processing and pipeline architecture. The Flash
ROM installed as program memory and on-chip debugging function enable program debugging and programming on the
customer’s board.
The Base Board is powered by the VBUS pin in the USB connector or an external power source connected via Header J3.
Switch J1 is used to select the power source.
Figure 7: Base Board - Q112 MCU Schematic

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Figure 8: Base Board - Power Supply Schematic
Figure 9: Base Board - Reset and Debugger Schematic
Figure 10: Base Board - Sensor Interface Schematic
The debugging function of ML610Q112 is extremely useful. You will be able to single-step through your code to quickly
find problems and solutions as well as set breakpoints and create and save watch lists of variables to help you better
understand what is going on inside your code. To manually reset the micro using Button S1, move J2 to the USR_RST
position.
The Sensor Interface Headers

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The feedback LEDs
The UART to USB Block
Figure 11: Base Board - Feedback LED Schematic
Figure 12: Base Board - USB to UART Schematic

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2.2. Software
The source code of the Base Board software can be downloaded from https://github.com/ROHMUSDC/ROHMSensorPlatformEVK
The flow diagram of the Base Board software is shown in Figure 13. The “Sensor Control” value is the input data from the
PD port of ML610Q112. This value is used to detect the type of Breakout Board connected to the Base Board (refer to
Table 1).
Figure 13: Base Board - Software Flow Diagram

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3. Breakout Board Overview
3.1. Hall Sensor Breakout Board
3.1.1. BU52011HFV Breakout Board
The BU52011HFV Breakout Board provides a simple environment to quickly evaluate the performance of the BU52011HFV
sensor. The BU52011HFV features magnetic switches that can operate both the S- and N-poles, upon which the output
goes from High to Low.
Figure 14: BU52011HFV Breakout Board (Top and Bottom Views)
Figure 15: BU52011HFV Breakout Board Block Diagram
The block diagram and schematic of the BU52011HFV Breakout Board are shown in Figures 15 and 16, respectively.
Resistors R161 to R166 are used to set the Sensor Control value for the board. Pin 5 (OUT1) of the BU52011HFV is
connected to the Base Board via Pin 1 (GPIO0) of Sensor Interface Header 1.

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Figure 16: BU52011HFV Breakout Board Schematic
Figure 17: BU52011HFV Breakout Board – Sample Output
When the BU52011HFV Breakout Board is connected to the running Base Board,
• If no magnetic field is present, all LEDs will be turned off and the output text sent to the PC via UART will read: 'Hall –
No Mag Fields Detected'.
• If a magnetic field is present, LED 0 will be turned on and the output text will read 'Hall - Mag Field Detected'.

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3.2. Ambient Light Sensor Breakout Boards
3.2.1.BH1620FVC Breakout Board
The BH1620FVC Breakout Board provides a simple environment to quickly evaluate the performance of the BH1620FVC
sensor. The BH1620FVC is an analog current output ambient light sensor ideal for obtaining ambient light data for adjusting
the LCD and keypad backlight in mobile phones to save power and improve visibility.
Figure 18: BH1620FVC Breakout Board (Top View and Bottom Views)
Figure 19: BH1620FVC Breakout Board Block Diagram
The block diagram and schematic of the BU1620FVC Breakout Board are shown in Figures 19 and 20, respectively.
Resistors R167 to R172 are used to set the Sensor Control value for the board. The Gain Mode can be set by Pin 3 (ADC0)
of Sensor resistors R128 and R131 as listed in Table 3. Pin 5 (IOUT) of the BH1620FVC is connected to the Base Board
via Pin 3 (ADC0) of Sensor Interface Header 2. The Base Board detects the Gain Mode configuration by reading the GPIO0
and GPIO1 pins of Sensor Interface Header 1.

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Figure 20: BH1620FVC Breakout Board Schematic
Table 3: BH1620FVC Breakout Board - Gain Mode Configuration
Figure 21: BH1620FVC Breakout Board – Sample Output
Mode Install Do Not Install GC1 GC2 Illuminance Detection Range
Shutdown R128, R130 R129, R131 0 0 -
H-Gain (default) R129, R130 R128, R131 0 1 ~1,000
M-Gain R128, R131 R129, R130 1 0 ~10,000
L-Gain R128, R131 R128, R130 1 1 ~100,00
Based on the Gain Mode read from Pins GPIO0 and GPIO1 in Header 1 and the 10bit ADC value converted at the ADC0
pin of Sensor Interface Header 2, the illuminance at the ALS surface (EV) is calculated using the following equations:
• H-Gain Mode
Where V is the voltage at the output pin of BH1620FVC and R132 = 5.6kΩ
• M-Gain Mode
• L-Gain Mode
The feedback LEDs display the 8bit ADC value scaled from the 10bit ADC at the output pin of BH1620FVC (via 2bit right
shift).

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3.2.2.BH1721FVC Breakout Board
The BH1721FVC Breakout Board provides a simple environment to quickly evaluate the performance of the BH1721FVC
sensor. The BH1721FVC is a digital Ambient Light Sensor IC fwith I2C bus I/F optimized for obtaining ambient light data for
adjusting LCD and keypad backlighting in mobile phones. It also features a wide detection range (1-65528 lx).
Figure 22: BH1721FVC Breakout Board (Top View and Bottom Views)
Figure 23: BH1721FVC Breakout Board Block Diagram
The block diagram and schematic of the BH1721FVC Breakout Board are shown in Figures 23 and 24, respectively.
Resistors R185 to R190 are used to set the Sensor Control value for the board. The I2C interface pins (Pins 3 and 5) are
connected to the Base Board via the SDA and SCL pins of Sensor Interface Header 2.

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Figure 24: BH1721FVC Breakout Board Schematic
Figure 25: BH1721FVC Breakout Board – Sample Output
The illuminance of the ALS surface (EV) is calculated as follows:
Where Raw Data refers to the 16bit serial output of the ALS. Accuracy denotes measurement accuracy (Typ. 1.2 times)
The feedback LEDs display 16bit serial output of the ALS.

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3.3 UV Sensor Breakout Board
3.3.1.ML8511 Breakout Board
The ML8511 Breakout Board provides a simple environment to quickly evaluate performance of the ML8511 sensor. The
ML8511 is a UV sensor capable of detecting the UV intensity both indoors and outdoors. An integrated amplifier converts
photocurrent to voltage based on UV intensity, making it easy to connect external circuits such as an ADC. And in power
down mode the standby current is typically only 0.1uA, prolonging battery life considerably.
Figure 26: ML8511 Breakout Board (Top View and Bottom View)
Figure 27: ML8511 Breakout Board Block Diagram
The block diagram and schematic of the ML8511 Breakout Board are shown in Figures 27 and 28, respectively. Resistors
R197 to R202 are used to set the Sensor Control value for the board. Pin 9 (OUT) of the ML8511 is connected to the Base
Board via Pin 3 (ADC0) of Sensor Interface Header 2. Header J7 is used to enable/disable ML8511.

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Designator Position Description
J7 2-1 Enable ML8511 (U59)
2-3 Disable ML8511 (U59)
Table 4: ML8511 Breakout Board – Jumper Positions
The UV intensity of the UV sensor surface (UVI) is calculated as follows:
Where V is the voltage at the output pin of ML8511.
The feedback LEDs display the 8bit ADC value scaled down from the 10bit ADC at the output pin of ML8511 (via 2bit right
shift).
Figure 29: ML8511 Breakout Board – Sample Output
Figure 28: ML8511 Breakout Board Schematic

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3.4. MEMS Sensor Breakout Board
3.4.1.KMX61 Breakout Board
The KMX61 Breakout Board provides a simple environment to quickly evaluate the performance of the KMX61 sensor. The
KMX61 is a 6-axis e-compass device with auto-calibration software. It delivers high sensitivity (0.05 µT/count) with stability
over temperature (± 0.05 %/ºC) and is well-suited for a range of smartphone, tablet and health & fitness applications.
Figure 30: KMX61 Breakout Board (Top View and Bottom Views)
Figure 31: KMX61 Breakout Board Block Diagram
The block diagram and schematic of the KMX61 Breakout Board are shown in Figures 31 and 32, respectively. Resistors
R209 to R214 are used to set the Sensor Control value for the board. The I2C I/F pins (Pins 4 and 6) and interrupt pins (pins
9 and 11) are connected to the Base Board via the SDA and SCL pins of Sensor Interface Header 2 and GPIO0 and GPIO1
pins of Sensor Interface Header 1, respectively.

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Figure 32: KMX61 Breakout Board Schematic
Table 5: KMX61 Breakout Board – Acceleration Sensitivity
Acceleration values (X, Y and Z) of the KMX61 are calculated using the following equations:
Where: ACCEL_XOUT are the X-axis accelerometer outputs ACCEL_XOUT_L (0Ah) and ACCEL_XOUT_H (0Bh).
ACCEL_YOUT are the Y-axis accelerometer outputs ACCEL_YOUT_L (0Ch) and ACCEL_YOUT_H (0Dh).
ACCEL_ZOUT are the Z-axis accelerometer outputs ACCEL_ZOUT_L (0Eh) and ACCEL_ZOUT_H (0Fh).
Resolution [bits] Range Sensitivity (Typ.) [counts/g]
14 ± 8g 1024
12
± 2g 1024
± 4g 512
± 8g 256
In the default software setting, the KMX61 is configured to operate at 14bit resolution and ± 2g.

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The magnetic values (X, Y and Z) of the KMX61 are calculated using the following equations:
MAGX=MAG_XOUT×Sensitivity [μT]
MAGY=MAG_YOUT×Sensitivity [μT]
MAGZ=MAG_ZOUT×Sensitivity [μT]
Where: MAG_XOUT are the X-axis magnetometer outputs MAG _XOUT_L (12h) and MAG _XOUT_H (13h).
MAG _YOUT are the Y-axis magnetometer outputs MAG _YOUT_L (14h) and MAG _YOUT_H (15h).
MAG _ZOUT are the Z-axis magnetometer outputs MAG _ZOUT_L (16h) and MAG _ZOUT_H (16h).
Sensitivity refers to the Magnetic Sensitivity (Typ. 0.146 µT/count)
The feedback LEDs indicate the tilt position of the KX022 surface:
• If the tilt position is Face-Up, LED 3 will be turned on.
• If the tilt position is Face-Down, LED 4 will be turned on.
• If the tilt position is Left, LED 7 will be turned on.
• If the tilt position is Right, LED 0 will be turned on.
• If the tilt position is Up, LED 5 will be turned on.
• If the tilt position is Down, LED 2 will be turned on.
Figure 33: KMX61 Breakout Board – Sample Output