LM Technologies LM931 XXXX User Manual

LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

CE

7

OSX

Android

XP Vista 7 8

RaspberryPi

Product

Part No

Revised

22mm

LM931

931-0636

19/MAY/2015

10mm

Features

128KB memory: 64KB RAM and 64KB ROM

Bluetooth ® v4.1 specification

Low energy maximum transmit output power

Support for Bluetooth v4.1 specification host stack
including ATT, GATT, SMP, L2CAP, GAP

RSSI monitoring for proximity applications

<900nA current consumption in dormant mode

Low Power 32kHz and 16MHz crystal

Switch-mode power supply

Receiver Sensitivity 92.5 dBm

12 digital PIOs

3 analogue AIOs

UART

4 PWM modules

10-bit ADC

Programmable general purpose PIO controller

Wake-up interrupt and watchdog timer

Overview

The LM931 Series of modules are BLE-only modules that run on their own host stack under the BT4.1 Standard. In addition to the
host stack running on the module, a range of fully programmable BLE applications can be configured to run on the module.

LM can develop such applications to your own requirements and/or add your own firmware to our module.

We can pre-configure any applications that may require specific settings to be pre-loaded and provide modules with pre-detemined
device names if required.

With a battery added to the LM931 and placed into a housing, this module can also act as an iBeacon device awaiting instruction/
data, or to pass on instruction/data automatically when in range of other BLE enabled devices.

LM931

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

General Specification

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

Chipset

Class

Speed / Bandwidth

Range

Interface

Standard Bluetooth

Frequency

Hopping

Profiles Supported

Firmware

Antenna Gain

Power Supply

Operating Temperature

Storage Temperature

Dimensions

CSR 1012

BLE Smart Class 1

Up to 1Mbps (0.27Mbps throughput)

0m - 100m in open space

I²C / SPI for EEPROM / flash memory ICs and peripherals

4.1

2.400 to 2.4835 GHz

Adaptive/sec 2MHz channel space

BLE Smart App’s Only

Fully programmable (Onboard stack)

Max 2 dBi

1.8-3.6 VBATT and 1.2-3.6 VDD PAD

-30°C to 85°C

-40°C to +85°C

22mm x 10mm x 2.8mm

Pin Outs

1.27mm

10.11mm

28

1

2

3

4

5

6

7

8

9

10

11

12

13

14

27

26

25

24

23

22

21

20

19

18

17

16

15

22mm

LM931

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

Pin Assignments

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Name

GND

GND

GND

AIO2

AIO1

AIO0

GND

IO0

IO1

IO3

IO4

IO5

GND

GND

GND

Type

Ground

Ground

Ground

I/O

I/O

I/O

Ground

I/O

I/O

I/O

I/O

I/O

Ground

Ground

Ground

Description

Common Ground

Common Ground

Common Ground

Programmable Input Output

Programmable Input Output

Programmable Input Output

Common Ground

UART TX

UART RX

Programmable Input Output

Programmable Input Output

DEBUG_CLK

Common Ground

Common Ground

Common Ground

16

17

18

19

20

21

22

23

24

25

26

27

28

PADS

VBATT

IO6

IO7

IO8

GND

IO9

IO10

IO11

SPIPION

WAKE

GND

GND

Power

Power

I/O

I/O

I/O

Ground

I/O

I/O

I/O

Input

Input

Ground

Ground

Positive supply for all digital I/O Ports

Module input supply, 3.3V DC

DEBUG_CS#

DEBUG_MOSI

DEBUG_MISO

Common Ground

Programmable Input Output

Programmable Input Output

Programmable Input Output

High to enable the SPI debug interface

Wake from Hibernate

Common Ground

Common Ground

LM931

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

LM931

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

LM931

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

LM931

Page 6 of 7

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LM931 Bluetooth BLE 4.1 Smart Module

UART Class 1 with Onboard Antenna

Product

Part No

Revised

LM931

931-0636

19/MAY/2015

LM931

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FCC Warning

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: Any changes or modifications to this unit not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users
must follow the specific operating instructions for satisfying RF exposure compliance.

Note 1: This module certified that complies with RF exposure requirement under mobile or fixed condition, this
module is to be installed only in mobile or fixed applications.

A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to
generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained
between the transmitter's radiating structure(s) and the body of the user or nearby persons. Transmitting devices
designed to be used by consumers or workers that can be easily re-located, such as wireless devices associated
with a personal computer, are considered to be mobile devices if they meet the 20 centimeter separation
requirement.

A fixed device is defined as a device is physically secured at one location and is not able to be easily moved to
another location.

Note 2: Any modifications made to the module will void the Grant of Certification, this module is limited to OEM
installation only and must not be sold to end-users, end-user has no manual instructions to remove or install the
device, only software or operating procedure shall be placed in the end-user operating manual of final products.

Note 3: Additional testing and certification may be necessary when multiple modules are used.

Note 4: To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring

compliance with the module(s) installed and fully operational. For example, if a host was previously authorized as
an unintentional radiator under the Declaration of Conformity procedure without a transmitter certified module
and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and
operational the host continues to be compliant with the Part 15B unintentional radiator requirements. Since this
may depend on the details of how the module is integrated with the host, LM Technologies Ltd. shall provide
guidance to the host manufacturer for compliance with the Part 15B requirements.

Note 5: FCC ID label on the final system must be labeled with “Contains FCC ID: VVX-LM931-XXXX” or
“Contains transmitter module FCC ID: VVX-LM931-XXXX”.

IC WARNING

This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two
conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation of the
device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2)
l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.

IC Radiation Exposure Statement:

This device and its antenna(s) must not be co-located with any other transmitters except in accordance with IC
multi-transmitter product procedures. Referring to the multi-transmitter policy, multiple-transmitter(s) and
module(s) can be operated simultaneously without reassessment permissive change.

Cet appareil et son antenne (s) ne doit pas être co-localisés ou fonctionnement en association avec une autre
antenne ou transmetteur.

This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non
contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20cm de distance entre la source de
rayonnement et votre corps.

This module is limited to OEM installation only and must not be sold to end-users, end-user has no manual
instructions to remove or install the device, only software or operating procedure shall be placed in the end-user
operating manual of final products. Additional testing and certification may be necessary when multiple modules
are used.

Any changes or modifications not expressly approved by the manufacturer could void the user's authority to
operate this equipment.

The final end product must be labeled in a visible area with the following " Contains IC: 10531A-LM931XXXX".