MOKOSmart MK01-KIT User manual
MK01-KIT Evaluation Board User Guide V1.2
1
Copyright © 2021 MOKO TECHNOLOGY LTD.
Revision History
Version
Data
Notes
Contributor(s)
V1.0
Oct 15 2020
Initial version
Kevin Huang
V1.1
Jan 18 2021
Update the picture and description of the development board
Victor Chow
V1.2
Sep 18 2021
Modify some parameters errors
Kevin Huang
MK01-KIT Evaluation Board User Guide V1.2
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Copyright © 2021 MOKO TECHNOLOGY LTD.
Table of Contents
Revision History ..........................................................................................................................................1
1. Overview ............................................................................................................................................3
2. Circuit Design .....................................................................................................................................4
Block Diagram.............................................................................................................................................. 4
Schematic .................................................................................................................................................... 4
3. Functional Blocks ...............................................................................................................................5
Power Supply............................................................................................................................................... 5
Inserting the Coin Cell Battery........................................................................................................................... 6
Removing the Coin Cell Battery ......................................................................................................................... 6
Current Measurement................................................................................................................................. 6
Pin Assignment............................................................................................................................................ 7
Switch Positions........................................................................................................................................... 8
NFC .................................................................................................................................................................... 8
DC/DC Regulator Setup...................................................................................................................................... 9
External 32.768 kHz Crystal Oscillator ............................................................................................................... 9
Jumper Position......................................................................................................................................... 10
USB to UART .............................................................................................................................................. 10
4. Packaging .........................................................................................................................................11
Contact.....................................................................................................................................................12
MK01-KIT Evaluation Board User Guide V1.2
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Copyright © 2021 MOKO TECHNOLOGY LTD.
1. Overview
MK01-KIT evaluation board is a universal development tool that highlights the capabilities of the MOKO MK01 series
(MK01A & MK01B) Bluetooth Module. This board provides you with a quick and easy way to develop MK01 series
module or even Nordic® nRF52832 solution.
The evaluation board is a full featured evaluation board that provides a complete I/O pin of MK01 series Bluetooth
Module, on-board programming and debugging pins (SWD), external 32.768 kHz crystal setup, DC/DC regulator setup,
power port over USB Type-C cable, NFC antenna FPC connector, one RESET button, one user button and one user RGB-
LED.
The board also provides the option to be powered from a CR2032 coin cell battery and have current sense hole to allow
for convenient current measurements.
Figure 1: MK01-KIT evaluation board (top view)
Figure 2: MK01-KIT evaluation board (bottom view)
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Copyright © 2021 MOKO TECHNOLOGY LTD.
2. Circuit Design
Block Diagram
Figure 3: Block diagram of MK01-KIT
Schematic
Figure 4: Schematic of MK01-KIT
MK01-KIT Evaluation Board User Guide V1.2
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Copyright © 2021 MOKO TECHNOLOGY LTD.
3. Functional Blocks
Figure 5: The functional blocks of MK01-KIT
Descriptions:
●J1: 2x5 1.27mm pitch vertical pin header
●J2 and J3: 2x5 2.54mm pitch vertical female header
●J4: 1x2 2.54mm pitch vertical female header
●W1-W9: 1x2 2.54mm pitch vertical pin header and all jumper caps are mounted
●LED1: 5V indicator
●LED2: 3.3V indicator
●SW5 (push button) for module Reset (active low)
●SW6 (push button) for expand function
●SW1-SW4, SW7 (toggle switch) for circuit selection
Power Supply
There are three power supply options:
●5V from the USB Type-C
●3.3V power output
●CR2032 coin cell battery
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Copyright © 2021 MOKO TECHNOLOGY LTD.
Figure 6: Interfaces of power supply for MK01-KIT
Note: The power sources are routed through a set of diodes (D3 and D4 in schematic) for reverse voltage protection,
where the circuit is supplied from the source with the highest voltage.
Inserting the Coin Cell Battery
To insert the coin cell, follow these steps:
Step 1: Push the coin cell against positive contact spring of holder (on the back side of the
evaluation board). The coin cell sits below the positive contact spring (as shown
with arrow).
Step 2: Push the coin cell down into the holder.
Removing the Coin Cell Battery
Use an insulated tool in the position shown in picture below, to gently remove the coin cell
from the coin cell holder (as shown with arrow). This is the correct method to remove coin-
cell from holder.
Note: Due to tight fit of coin cell in the coin-cell holder, care should be taken prevent
damage to the holder.
Current Measurement
To measure the current, please take off the jumper cap of W1, and connect an
ampere-meter between the pins of W1 to monitor the current directly.
Note:
1. Do not use the USB connector to power the board during current
measurements. Power the board from a coin cell battery, or use an external
power supply on the external supply connector J4.
2. The current measurements will become unreliable when a serial terminal is connected to the virtual COM port.
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Copyright © 2021 MOKO TECHNOLOGY LTD.
Pin Assignment
Figure 7: J1 – J4 of MK01-KIT
Table 1: The pin assignments of J1 – J4
Pin No.
J1
J2
J3
J4 (3.3V output)
1
VCC
VCC
P01
3.3V (+)
2
SWDIO
SWDIO
GND
GND (-)
3
GND
GND
P02/AIN0
4
SWDCLK
SWDCLK
P30/AIN6
5
GND
P20/EN
P03/AIN1
6
NC
P18
P00
7
NC
P05/AIN3
P15
8
NC
P21/RST
P04/AIN2
9
GND
P09
P16
10
P0.21/RST
P10
P14
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Copyright © 2021 MOKO TECHNOLOGY LTD.
Switch Positions
Figure 8: SW1 – SW4 of MK01-KIT
Table 2: Use of SW1 – SW4
Part Name
Description
State
Selected Circuit
SW1
Toggle switch
Left
P09/P10
Right
NFC circuit
SW2
Toggle switch
Left
P00/P01
Right
External 32.768kHz crystal circuit
SW3
Toggle switch
Left
Default internal LDO regulator setup
Right
External DC/DC regulator setup
SW4
Toggle switch
Left
P20
Right
P20/EN, pull-down to low level
NFC
MK01-KIT evaluation board has a FPC connector, which can be inserted into a NFC antenna.
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Copyright © 2021 MOKO TECHNOLOGY LTD.
Figure 9: FPC NFC antenna inserted to MK01-KIT
To connect the NFC circuit to the MK01 series module, toggle the SW2 toggle switch to the right. If the SW2 toggle
switch is toggled to left, P09 and P10 will be enabled as GPIO pins on J2.
Figure 10: Toggle to Left – GPIO enabled
Figure 11: Toggle to Right – NFC enabled
DC/DC Regulator Setup
The MK01 series module uses LDO regulator setup by default. Connect 10uH and 15nH inductors to the module on the
MK01-KIT evaluation board through DCC and DEC4 pins to enable DC/DC regulator setup.
To connect the DC/DC regulator setup circuit to the MK01 series module, toggle the SW3 toggle switch to the right. If
toggle the SW3 toggle switch to the left, DCC and DEC4 will be enabled as GPIO pins on J3.
External 32.768 kHz Crystal Oscillator
The MK01 series module on-chip 32.768kHz RC oscillator provides the standard accuracy of ±250 ppm.
The MK01-KIT evaluation board connects an external higher accuracy (±20 ppm) 32.768 kHz crystal to the P00 and P01
pins of MK01 series module.
This provides improved protocol timing and helps with radio power consumption in the system standby doze/deep
sleep modes by reducing the time that the Rx window must be open.
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Copyright © 2021 MOKO TECHNOLOGY LTD.
To connect the optional external 32.76kHz crystal oscillator circuit to the MK01 series module, toggle the SW2 toggle
switch to the right. If toggle the SW2 toggle switch to the left, P00 and P01 will be enabled as GPIO pins on J3.
Jumper Position
Figure 12: W2 – W5 of MK01-KIT
Table 3: Use of W2 – W5
State
W2
W3
W4
W5
Open
P15
P26
P25
P19
Short
Push button SW6
LED_Green
LED_Red
LED_Blue
USB to UART
MK01-KIT evaluation board allows the MK01 series module to physically connect to a PC via the supplied USB Type-C
cable for development purposes. The evaluation board provides USB-to-UART port conversion through a CP2102 bridge.
Table 4: Description of the UART pins
GPIO (open)
UART (short)
CP2102
Jumper
P08
RX
USB_TXD
W6
P06
TX
USB_RXD
W7
P29
CTS
USB_RTS
W8
P28
RTS
USB_CTS
W9
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Copyright © 2021 MOKO TECHNOLOGY LTD.
4. Packaging
You will find the following items in the packaging box:
Figure 13: MK01-KIT evaluation board packaging
Table 5: MK01-KIT packaging list
Item
Qty
MK01-KIT evaluation board
1
USB-C cable
1
NFC antenna
1
Two-pin jumper cap (mounted to the pins)
9
MK01-KIT Evaluation Board User Guide V1.2
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Copyright © 2021 MOKO TECHNOLOGY LTD.
© Copyright 2021 MOKO TECHNOLOGY. All Rights Reserved. Any information furnished by MOKO TECHNOLOGY LTD. is
believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use
and application of MOKO TECHNOLOGY LTD. materials or products rests with the end user since MOKO TECHNOLOGY
LTD. cannot be aware of all potential uses. MOKO TECHNOLOGY LTD. makes no warranties as to non-infringement nor
as to the fitness, merchantability, or sustainability of any MOKO TECHNOLOGY LTD. materials or products for any
specific or general uses. MOKO TECHNOLOGY LTD. or any of its affiliates shall not be liable for incidental or
consequential damages of any kind. All MOKO TECHNOLOGY LTD. products are sold pursuant to the MOKO
TECHNOLOGY LTD. Terms and Conditions of Sale in effect from time to time, a copy of which will be furnished upon
request. Other marks may be the property of third parties. Nothing herein provides a license under any MOKO
TECHNOLOGY LTD. or any third-party intellectual property right.
Contact
MOKO TECHNOLOGY LTD.
An original manufacturer for IoT smart devices
Address: 4F, Building 2, Guanghui Technology Park, MinQing Rd, Longhua, Shenzhen, Guangdong, China
E-mail: Support_BLE@mokotechnology.com
Website: www.mokosmart.com
www.mokoblue.com
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