Bluetooth 5 enabled   nRF52 series-based
Bluetooth® low energy module

Bluetooth 5 enabled   nRF52series-based
Bluetooth® low energy
module

MK71511 / MK71521
3 features

Features.1   
Adoption of Industrial use

MK715x1 is high-reliability designed for using a long time, considering industrial use.

High-Reliability Design for using a long time
Features. 2   
Applicable to Inexpensive 2-layer board

MK715x1 has unique pad allocation that supports wiring all 32 signals on 2-layer board and downsizing module at the same time.
Then PCB cost that is mounted module will be reduced.

Applicable to Inexpensive 2-layer board
Features.3   
Software writing service

It's writing application software that is developed by user into MK715x1 and shipping.
Please contact sales office to ask order condition and detail when you'd like to use this service.

Software writing service

Expanding application by Bluetooth

5

Data transfer

DATA TRANSFER

Sports & Fitness

Bluetooth technology is used for wearable devices like fitness trackers and smart watches that are woan to monitor steps, exercise, and activity.

Health & Wellness

Bluetooth technology contributes providing quality care that is helthcare at home and improvement of operational efficiency in a medical setting about blood pressure monitors and electrocardiograph,etc.

PC Peripherals & Accessories

Bluetooth technology contributed freedom from wires of a keyboard and mouse of computers.

Location services

LOCATION SERVICE

Point Of Interrest

Retailers adopted point of interest (PoI) information beacons early, but Bluetooth technology is expected of smart buildings, smart industry, and smart cities, to become more convenience for citizens.

Item Finding

Consumers, who are attaching Bluetooth tags to keys, wallets, purses, and other personal property, increased. When an item with a tag is misplaced, the user launches an application on their smartphone to locate it.

Asset Tracking

Bluetooth technology is rapidly adopted in real-time location services (RTLS) solutions used for tracking people and assets, like locating tools and workers in a warehouse or medical devices and patients in a hospital.

Way Finding

Bluetooth indoor positioning systems (IPS) contributed helping visitors navigate their way through complex facilities where is uncovered by GPS, from airports and train stations to museums and stadiums.

Device network

DEVICE NETWORK

Control Systems

Bluetooth mesh networking is quickly being adopted as the wireless communications platform of many control systems, like advanced lighting systems for the smart building and smart industry.

Monitoring Systems

Bluetooth wireless sensor networks (WSN) contributed improvement employee productivity, lower building operating costs to monitor light, temperature, humidity, and occupancy and maintain equipment on the basis of monitring results.

Automation Systems

Bluetooth technology contributed harness energy savings, lower operating costs of building to be adopted the automation of a building’s HVAC (heating, ventilation and air conditioning), lighting, and security, etc.

Overview

MK71511 / MK71521 integrates nRF52 series IC (nordic) that in No.1 share in industry

MK71511 MK71521

MK71511 / MK71521

All in One module integrated all necessary peripheral cuircuit.
This is recommended for users who focus on consumption current.

MK71511A　MK71521A

MK71511A / MK71521A

Crystal for low power clock isn't integrated to reduce module cost.
This is recommended for users who focus on low cost rather than consumption current.

  • Bluetooth v5.2 PHY component certified
    • QDID : 146733 (MK71511 / MK71511A)
      146740 (MK71521 / MK71521A)
  • Radio law certified
    • Japan : 006-000797 (MK71511) / 006-000799 (MK71511A)
      006-000798 (MK71521) / 006-000800 (MK71521A)
    • FCC : 2ACIJ71511 (MK71511 / MK71511A)
      2ACIJ71521 (MK71521 / MK71521A)
    • ISED : 20971-71511 (MK71511 / MK71511A)
      20971-71521 (MK71521 / MK71521A)
    • CE (RED : Radio Equipment Directive) : EN300 328 V2.2.2
  • All in One module
    • DCDC converter with loading circuit
    • Low Power Clock (MK71511 / MK71521)
    • Bypass condencer for power supply
  • Share No.1 Bluetooth 5 Chip is integrated
    • MK71511 / MK71511A : nRF52811 (Nordic Semiconductor)
    • MK71521 / MK71521A : nRF52832 (Nordic Semiconductor)
  • Powerful CPU core
    • MK71511 / MK71511A : Arm® Cortex®-M4 Processor (64MHz)
    • MK71521 / MK71521A : Arm® Cortex®-M4 Processor with FPU (64MHz)

Selection

1.   Hardware Selection
  Features
Product Name MK
71511		 MK
71511A		 MK
71521		 MK
71521A
Bluetooth
SIG Certified		 v5.2
Bluetooth
IC		 nRF52811
(Nordic Semiconductor)		 nRF52832
(Nordic Semiconductor)
Dimension 9.7mm(W) × 13.4mm(H) × 2.0mm(D)
Package 54pin LGA pin compatible
Core
CPU		 Arm
Cortex-M4 Processor
64MHz		 Arm
Cortex-M4 Processor
with FPU
64MHz
Flash
ROM		 192KB 512KB
RAM 24KB 64KB
Max.
Transmittion
Power		 +4dBm
Sensitivity
(1Mbps)		 -97dBm -96dBm
Crystal 32MHz
&
32.768kHz		 32MHz 32MHz
&
32.768kHz		 32MHz
  Interface
Product Name MK
71511		 MK
71511A		 MK
71521		 MK
71521A
GPIO 30 32 30 32
SPI 2ch
(Master/Slave)		 3ch
(Master/Slave)
UART 1 (to 1,000kbps)
I2C 1ch
(Master/Slave)		 2ch
(Master/Slave)
I2S   2ch
(Master/Slave)
PWM 4ch 3 × 4ch
ADC 8ch (12bit, 200kHz)
NFC
2.   Software Selection
  SoftDevice (Protocol)
by Nordic semiconductor
Product Name MK71511 /
MK71511A		 MK71521 /
MK71521A
SoftDevice S140 (v7.0.1) S112 (v7.0.1) S113 (v7.0.1) S132 (v7.0.1) S112 (v7.0.1) S113 (v7.0.1)
Bluetooth SIG
Certified		 v5.1 (As of April 2020)
2M PHY
LE Secure Connections
Privacy 1.2
Long
Range
Advertising Extension
Multi Connection 20 4
(peripheral)		 4
(peripheral)		 20 4
(peripheral)		 4
(peripheral)
LE Data Packet Length Extension
Mesh Multi Protocol TBD TBD
Direction Finding
necessary
Flash ROM*		 156
KB		 100
KB		 112
KB		 152
KB		 100
KB		 112
KB
necessary
RAM*		 7.2
KB		 5.2
KB		 5.9
KB		 7.0
KB		 5.2
KB		 5.9
KB
  • * : necessary memory size is at the case of a minimum system.

Development flow

Development flow of application using MK71511/MK71521 is shown step-by-step.
This is filled with usuful information, please use it as a reference

Evaluation kit

Evaluation kit are 2 types. there're "MK715x1EK1" as small type and "MK715x1EK1A" as Arduino pin compatible type.
Plus version "MK715x1EK1P","MK715x1EK1AP" that included debug probe for Arm "J-Link LITE" are also provided.

Small and simple type
Evaluation kit
Bluetooth 5 enabled module Evaluation kit MK715x1EK1
  • MK71511EK1 Evaluation kit Mini
  • MK71521EK1 Evaluation kit Mini
Arduino pin compatible type
Evaluation kit
Bluetooth 5 enabled module Evaluation kit MK715x1EK1A
  • MK71511EK1A Evaluation kit
  • MK71521EK1A Evaluation kit
Evaluation kit Line up
  Support
Standard		 Evaluation Board
Externals		 Components Notes Sample
and Buy

Nordic Development information

User gets information, tools and support that is necessary to develop nRF52x from Web, Info-Center(Downloading documents), Developer Zone(Technical support & Developer's community) of Nordic Semiconductor.

Bluetooth® word mark is owned by the Bluetooth® SIG, Inc.

Arm® and Cortex® are trademarks or registered trademarks of Arm Limited in the EU and other countries.

All other company names and product names in this website are trademarks or registered trademarks of the respective companies.