ProLite E32-A User manual

E32-A User Manual

Pro-Lite, Inc. E32-A user manual
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CONTENT
1. OVERVIEW.............................................................................................................................. 3
1.1 INTRODUCTION..............................................................................................................................................................3
1.2 FEATURES...................................................................................................................................................................... 3
2.SPECIFICATION AND PARAMETER......................................................................................... 4
2.1 LIMIT PARAMETER......................................................................................................................................................... 4
2.2 OPERATING PARAMETER................................................................................................................................................ 4
3 SIZE AND PIN DEFINITION.........................................................................................................5
4 CONNECT TO MCU........................................................................................................................6
5 FUNCTION DESCRIPTION...........................................................................................................7
5.1 FIXED TRANSMISSION....................................................................................................................................................7
5.2 BROADCASTING TRANSMISSION.................................................................................................................................... 7
5.6.1 Indication of UART output..................................................................................................................................... 8
5.6.2 Indication of wireless transmitting........................................................................................................................ 8
5.6.3 Configuration procedure of module....................................................................................................................... 9
5.6.4 Notes for AUX........................................................................................................................................................ 9
6 OPERATING MODE.....................................................................................................................10
6.1 MODE SWITCH.............................................................................................................................................................10
6.2 NORMAL MODE (MODE 0)........................................................................................................................................... 11
6.3 WAKE-UP MODE (MODE 1)...........................................................................................................................................11
6.4 POWER-SAVING MODE (MODE 2)................................................................................................................................. 11
6.5 SLEEP MODE (MODE 3)................................................................................................................................................ 12
7 COMMAND FORMAT..................................................................................................................12
7.1 DEFAULT PARAMETERS................................................................................................................................................ 12
7.2 READING OPERATING PARAMETERS.............................................................................................................................13
7.3 READING VERSION NUMBER........................................................................................................................................13
7.4 RESET COMMAND........................................................................................................................................................13
7.5 PARAMETER SETTING COMMAND................................................................................................................................ 13
8. HARDWARE DESIGN.................................................................................................................15
9 FAQ.................................................................................................................................................. 16

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9.1 COMMUNICATION RANGE IS TOO SHORT......................................................................................................................16
9.2 MODULE IS EASY TO DAMAGE.....................................................................................................................................17
9.3 BER(BIT ERROR RATE)IS HIGH..................................................................................................................................17
10 PRODUCTION GUIDANCE...................................................................................................... 17
10.1 REFLOW SOLDERING TEMPERATURE..........................................................................................................................17
10.2 REFLOW SOLDERING CURVE......................................................................................................................................18
12 ANTENNA GUIDANCE.............................................................................................................. 18
12.1 ANTENNA RECOMMENDATION................................................................................................................................... 18
12.2 ANTENNA SELECTION................................................................................................................................................19
13 PACKAGE FOR BATCH ORDER............................................................................................. 19
REVISION HISTORY...................................................................................................................... 20

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1. Overview
1.1 Introduction
E32-A is a wireless serial port module (UART) based on SEMTECH's LLCC68 RF chip. It has multiple
transmission modes, working in the 432MHz~435MHz, (default 433MHz), LoRa spread spectrum technology,
LLCC68 features LoRa™, which will bring longer communication distance, and has the advantages of concentrated
power density, meanwhile it has a very strong confidentiality. the modules of 20dBm transmitting power adopt industrial
grade 32MHz crystal oscillators to ensure the stability and consistency, its precision is lower than the widely adopted
10ppm.E32-A is in stable bulk production and are widely applied in utility meters, IoT renovation, smart home, etc. The
modules feature data encryption and compression. The data transmitted in air features randomness.
air Data Rate (Default 2.4kps). The encryption-decryption algorithm makes data interception meaningless. And the
data compression enables shorter transmitting time and lower rate of being interfered, which increased the reliability and
transmitting efficiency.
1.2 Features
Communication distance tested is up to 8km
Maximum transmission power of 100mW, software multi-level adjustable；
Support the global license-free ISM 433MHz band；
Support air date rate of 2.4kbps～19.2kbps；
Support new generation LoRa technology based on LLCC68；
Low power consumption for battery supplied applications；
Support 2.3V~5.2V power supply, power supply over 3.3 V can guarantee the best performance；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
IPEX and stamp hole optional, good for secondary development and integration.
1.3 Application
Home security alarm and remote keyless entry；
Smart home and industrial sensors；
Wireless alarm security system；
Building automation solutions；
Wireless industrial-grade remote control；
Health care products；
Advanced Meter Reading Architecture(AMI)；
Automotive industry applications.

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2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remark
Min.
Max.
Power supply（V）
0
5.5
Voltage over 5.5V will cause permanent
damage to module
Blocking power（dBm）
-
-10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
85
-
2.2 Operating parameter
Main parameter
Performance
Remark
Min
Typ.
Max.
Operating voltage（V）
2.3
5.0
5.5
≥5.0 V ensures output power
Communication level（V）
-
3.3
-
For 5V TTL, it may be at risk
of burning down
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（MHz）
432
-
435
Support ISM band
Power
consumpti
on
Transmitting current [mA]
-
110
Instant power
consumption
Instant power consumption
Receiving current [mA]
-
14
-
-
Turn-off current [μA]
-
4
-
Software is shut down
Max Tx power（dBm）
19.0
-
20.0
Receiving sensitivity（dBm）
-144
-146
-147
Air data rate is 2.4kbps
Air data rate（bps）
2.4k
2.4k
19.2k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
5000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 2.4kbps
TX length
58 Byte
Maximum capacity of single package
Buffer
512 Byte
-
Modulation
LoRa™
-
Communication interface
TTL
@3.3V
Package
SMD
-
Connector
1.27mm
-
Size
16*26mm
-

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Antenna
IPEX/stamp hole
50 ohm impedance
3 Size and pin definition
No.
Name
Direction
Features
1
GND
-
Ground
2
GND
-
Ground
3
GND
-
Ground
4
GND
-
Ground
5
M0
Input
（weak pull-up）
Work with M1 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
6
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
7
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin.
8
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin.
9
AUX
Output
Used to indicate the working status of the module;
The user wakes up the external MCU and outputs low level during power-on
self-check initialization; (can be left floating)
10
VCC
-
Power supply: 2.3~ 5.5V DC
11
GND
-
Ground

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12
NC
-
Empty Pin
13
GND
-
Ground
14
NC
-
Empty Pin
15
NC
-
Empty Pin
16
NC
-
Empty Pin
17
NC
-
Empty Pin
18
NC
-
Empty Pin
19
GND
-
Ground
20
GND
-
Ground
21
ANT
-
Antenna
22
GND
-
Ground
4 Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

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5 Function description
5.1 Fixed transmission
5.2 Broadcasting transmission
5.3 Broadcasting address
For example: Set the address of module A as 0xFFFF, and the channel as 0x04;
When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the

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purpose of broadcast is realized.
5.4 Monitor address
For example: Set the address of module A as 0xFFFF, and the channel as 0x04;
When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of
monitor is realized.
5.5 Reset
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the
operating mode based on user’s parameters. During the process, the AUX remains low level. After the process
completed, the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0.
Therefore, users need to wait the AUX rising edge as the start of module’s normal work.
5.6 AUX description
AUX Pin can be used as indication for wireless send & receive buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been
sent through UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART output
To wake up external MCU
5.6.2 Indication of wireless transmitting
Buffer (empty): the internal 512 bytes data in the buffer are written to the RFIC (Auto sub-packaging).
When AUX=1, the user can input data less than 512 bytes continuously without overflow. Buffer (not empty): when
AUX=0, the internal 512 bytes data in the buffer have not been written to the RFIC completely. If the user starts to
transmit data at this circumstance, it may cause overtime when the module is waiting for the user data, or

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transmitting wireless sub package.
When AUX = 1, it does not mean that all the UART data of the module have been transmitted already, perhaps the
last packet of data is still in transmission.
5.6.3 Configuration procedure of module
Only happened when power-on resetting or exiting sleep mode
5.6.4 Notes for AUX
No.
Description
1
For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if
it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX
outputs high level.
2
When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since
AUX outputs high level, the mode switch will be completed.
3
After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for
2ms . If AUX stays on the high level, the operating mode switch can be effected immediately.
4
When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will
reset user parameters, during which AUX outputs low level.