User's Manual

LM931
Page 1 of 7
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Overview
Features
LM931 Bluetooth BLE 4.1 Smart Module
UART Class 1 with Onboard Antenna
Part No
Revised
Product
19/MAY/2015
931-0636
LM931
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
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.
10mm
22mm
CE 7
XP Vista 7 8
Android
RaspberryPi OSX