Ebyte E104-BT5011A User manual

E104-BT5011A User Manual
V1.0
RF52811 BLE5.1 Low Power BLE to Serial Module

Copyright ©2012–2019，成都亿佰特电子科技有限公司
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Content
1. OVERVIEW......................................................................................................................................................................1
1.1 INTRODUCTION..............................................................................................................................................................1
1.2 FEATURES...................................................................................................................................................................... 1
1.3 APPLICATION................................................................................................................................................................. 2
2. PRECAUTIONS FOR USE.............................................................................................................................................3
2.1 BLE DESCRIPTION......................................................................................................................................................... 3
2.1.1 Connection gap, broadcast gap, scan gap.............................................................................................................. 3
2.1.2 MTU...................................................................................................................................................................... 3
2.2 PRECAUTIONS FOR MODULE APPLICATION................................................................................................................... 4
2.2.1 Response of distance to data transmission rate......................................................................................................4
2.2.2 The master data sending rate is lower than the slave data sending rate.................................................................4
2.2.3 IOS device can not obtain the solution of module MAC address..........................................................................4
2.2.4 Precautions for connecting Ebyte ble modules with modules from other manufacturers..................................... 4
3. PARAMETER...................................................................................................................................................................5
3.1 LIMIT PARAMETER......................................................................................................................................................... 5
3.2 OPERATING PARAMETER................................................................................................................................................ 5
4. DIMENSION AND PIN DEFINITION..........................................................................................................................7
5. FUNCTION.......................................................................................................................................................................9
5.1 ROLES............................................................................................................................................................................9
5.1.1 MASTER......................................................................................................................................................................9
5.1.2 slave..................................................................................................................................................................... 10
5.1.3 Observer...............................................................................................................................................................11
5.2 POWER MODE.............................................................................................................................................................. 11
5.2.1 Low power mode................................................................................................................................................. 11
5.2.2 Wakeup mode...................................................................................................................................................... 12
5.3 DATA TRANSPARENT TRANSMISSION...........................................................................................................................12

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5.4 MAC ADDRESS BINDING............................................................................................................................................. 13
5.5 CONFIGURATION..........................................................................................................................................................13
5.6 DATA INDICATION........................................................................................................................................................ 13
5.6.1 Output delay........................................................................................................................................................ 14
5.7 UUID DESCRIPTION....................................................................................................................................................14
5.8 LONG RANGE...............................................................................................................................................................15
6. AT COMMAND..............................................................................................................................................................16
6.1 INSTRUCTIONS.............................................................................................................................................................16
6.2 ERROR CODE............................................................................................................................................................... 16
6.3 STATUS PRINTING.........................................................................................................................................................17
6.4 INSTRUCTION LIST.......................................................................................................................................................17
6.4.1 AT test command................................................................................................................................................. 17
6.4.2 AT+RESET Reset command............................................................................................................................... 18
6.4.3 AT+RESTORE Restore command.......................................................................................................................18
6.4.4 AT+VER Query software version number...........................................................................................................18
6.4.5 AT+BAUD Serial port baud rate......................................................................................................................... 18
6.4.6 AT+PARI Serial port check bit............................................................................................................................ 19
6.4.7 AT+ROLE Bluetooth Role...................................................................................................................................20
6.4.8 AT+ADV Broadcast enable................................................................................................................................. 20
6.4.9 AT+ADVINTV Broadcast gap............................................................................................................................ 21
6.4.10 AT+NAME Broadcast device name.................................................................................................................. 21
6.4.11 AT+CONPARAMS Connection gap tacit configuration................................................................................... 21
6.4.12 AT+DISCON Disconnect Instruction................................................................................................................ 22
6.4.13 AT+DATDLY Data Output Delay......................................................................................................................22
6.4.14 AT+MAC Local MAC Address......................................................................................................................... 23
6.4.15 AT+PEERMAC Connected Device MAC.........................................................................................................23
6.4.16 AT+BOND Binding Enable............................................................................................................................... 24
6.4.17 AT+BONDMAC Add Binding MAC Address.................................................................................................. 24
6.4.18 AT+BONDDEL Delete the MAC Address Specified by the Binding............................................................... 25

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6.4.19 AT+SCAN Broadcast Scanning.........................................................................................................................25
6.4.20 AT+SCANINTV Scanning Gap.........................................................................................................................25
6.4.21 AT+AUTH Air Configuration Authentication Password...................................................................................26
6.4.22 AT+UPAUTH Modify Air Authentication Password........................................................................................ 26
6.4.23 AT+PWR Transmitting Power........................................................................................................................... 27
6.4.24 AT+SLEEP Enter Sleep Command Immediately.............................................................................................. 27
6.4.25 AT+LOGMSG Operation Status Output............................................................................................................27
6.4.26 AT+FNAME Name Filtering............................................................................................................................. 28
6.4.27 AT+FRSSI Signal Strength Filtering................................................................................................................. 28
6.4.28 AT+PHY BLE PHY Instructions....................................................................................................................... 29
7. QUICK START...............................................................................................................................................................30
7.1 QUICK GUIDE TO CONFIGURATION MODE.................................................................................................................. 30
7.1.1 Serial port configuration...................................................................................................................................... 30
7.1.2 Air configuration..................................................................................................................................................31
7.2 DATA TRANSMISSION................................................................................................................................................... 32
7.2.1 Data transparent transmission..............................................................................................................................32
8. HARDWARE DESIGN..................................................................................................................................................34
9. FAQ..................................................................................................................................................................................36
9.1 COMMUNICATION RANGE IS TOO SHORT......................................................................................................................36
9.2 MODULE IS EASY TO DAMAGE.....................................................................................................................................36
9.3 BIT ERROR RATE IS TOO HIGH......................................................................................................................................37
10. PRODUCTION GUIDANCE......................................................................................................................................38
10.1 REFLOW SOLDERING TEMPERATURE......................................................................................................................... 38
10.2 REFLOW SOLDERING CURVE..................................................................................................................................... 39
11. RELATED PRODUCT................................................................................................................................................ 40
12. PACKAGE FOR BULK ORDER............................................................................................................................... 43
13. REVERSION HISTORY............................................................................................................................................. 44

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14. ABOUT US.................................................................................................................................................................... 44

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1. Overview
1.1 Introduction
E104-BT5011A is a serial to BLE Bluetooth master-slave integrated module
based on Bluetooth protocol version 5.1. It is small in size and low in power
consumption. It works in the 2.4GHz frequency band.
The E104-BT5011A module is developed by Chengdu Ebyte Electronic
Technology Co., Ltd. based on NORDIC's nRF52811 chip. The module uses
general AT commands to set parameters and is simple and quick to operate. The
module only supports Bluetooth master, slave and observer modes. The module
functionally supports low-power broadcast, data transparent transmission, and air
configuration. Modules can be widely used in smart wear, home automation, home security, personal health care, smart
home appliances, accessories and remote controls, automobiles, lighting, industrial Internet, smart data collection, smart
control and other fields. Maximum support for data transmission with a baud rate of 921600bps.
This document only supports e104-bt5011a module. Downward compatibility.
1.2 Features
Support Bluetooth BLE 5.1 protocol;
Support two working modes of configuration and transparent transmission;
Support automatic broadcast and automatic connection after startup;
Support serial port wakeup;
The master role supports multiple condition filtering;
Support serial port transparent transmission;
Support multiple serial port modes and baud rates;
With PCB onboard antenna, no external antenna is required;
Support Bluetooth parameter air configuration function;
The maximum communication distance is 70m (@4dBm, 2Mbps);
Support ultra-low power sleep, simultaneous broadcasting;
Support MAC address binding, the maximum binding data is 8 devices (no distinction between master and slave);
Support dynamic modification of transmit power. The maximum emission is 4dBm;
Support sniffing function;

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Maximum MTU is 247bytes;
Support 2M, 1M airspeed;
1.3 Application
Wireless meter reading and wireless sensing
Smart home
Industrial remote control, telemetry
Smart buildings, smart buildings
Automatic data collection
Health sensor
Smart wearable devices
Intelligent robot
Wireless sensing
Electronic label
Intelligent control

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2. Precautions for use
2.1 BLE description
This section briefly introduces BLE related knowledge. It has nothing to do with the module.
2.1.1 Connection gap, broadcast gap, scan gap
In order to ensure low power consumption, BLE adopts intermittent working mode.
The scanning interval means scanning the broadcast channel every certain time. The smaller the scan gap, the higher
the average power consumption during the scan, but the faster the slave device is found, and vice versa.
The broadcast interval is to publish a broadcast every certain time. The smaller the broadcast gap, the easier it is for
the slave device to be discovered by the master, and the higher the average power consumption.
For connected BLE devices, the master initiates a request to the slave every certain time (connection gap), and after
receiving the request, the slave responds to the master's request at the same time (connection gap). If the slave does not
respond to the master request within the specified time (connection timeout), the master judges that the slave is
disconnected, and the slave fails to receive the request from the master within the specified time (connection timeout),
the slave judges that the master is disconnected connection. In order to reduce BLE power consumption again, the BLE
protocol also stipulates that the slave can ignore the specified number of requests (slave timeout).
The smaller the connection gap, the greater the data throughput, but the greater the power consumption. If users are
concerned about data throughput, the connection gap can be reduced.
Note that for the connection gap, the connection gap may be different for different devices, or even cannot be
changed, such as iphone.
2.1.2 MTU
It refers to the effective size of BLE air single packet data. The MTU of the ble4.0/4.1 protocol is 27 bytes, and the
MTU can be expanded to 251 bytes from ble4.2 and higher.
When the MTU is actually used, how can the user's effective minus be reduced by 3 bytes of the header. This means
that the maximum single packet data for 4.0/4.1 users is 24 bytes, and the maximum single packet data for ble4.2 and
higher is 247 bytes.

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Need to explain. In practical applications, the MTU value of different devices will be different. For example, the
MTU of iPhone is 185 bytes, and the user cannot change it.
2.2 Precautions for Module Application
2.2.1 Response of distance to data transmission rate
The module uses a ceramic antenna. Compared with the PCB antenna, the ble wireless signal has a weaker
transmitting and receiving ability. As the distance increases, the data speed decreases.
2.2.2 The master data sending rate is lower than the slave data sending rate
Because the slave sends data using the notification method to send data, the data sending rate is faster, while the
master sends data using the write response method, and the data sending rate is slower.
2.2.3 IOS device can not obtain the solution of module MAC address
Due to IOS system limitation, APP cannot obtain the MAC address of the module. The module provides a solution:
add a MAC address field in the broadcast packet (only BT5011A). For details, please refer to "6.1.2 Slave".
2.2.4 Precautions for connecting Ebyte ble modules with modules from other
manufacturers
When the Ebyte ble module is used as a slave, it does not refuse connections from other manufacturers' masters. But
the communication needs to communicate in the way shown in [5.7UUID description].
When the Ebyte ble module is used as the master, there are two precautions for connecting to other manufacturers'
modules:
1. The Ble broadcast content must include the service UUID, and the UUID is consistent with the service UUID set
by the master;
2. Services and characteristics, and characteristic attributes must be consistent; receiving operations must be
consistent. Refer to【5.7UUID description】.
3. The ble connection process of other manufacturers has no authentication binding process.

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3. Parameter
3.1 Limit parameter
Main parameter
Performance
Note
Min
Max
Voltage supply [V]
0
3.6
Voltage over 3.6V 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
Industrial grade
3.2 Operating parameter
Main parameter
Performance
Remarks
Min
Typ
Max
Voltage supply [V]
1.7
3.3
3.6
≥3.3 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
Frequency [MHz]
2402
-
2480
Support ISM band
Power
consumptio
n
Transmitti
ng current
（mA）
-
13
19
-
Receiving
current
（mA）
-
13
-
-

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Sleep
current
（μA）
-
8
-
-
Maximum transmitting
power（dBm）
-
3.8
4
-
Receiving sensitivity
（dBm）
-
-96
-
Bluetooth®lowenergymode
Arbitrary I/O
VIL/VIH
GND/0.84
GND/VCC
0.36/VCC
VOL/VOH
GND/1.88
GND/VCC
0.47/VCC
Sleep broadcast current
(default)
-
13.83
-
Unit: uA. Broadcast gap is 1s
Sleep connection current
(default)
-
6.89
-
Unit: uA. Broadcast gap is 1s
Main parameter
Description
Remarks
Distance
70m
Test condition ：Clear and open environment, height 2.0
meters; @4dBm; air speed: 1Mbps
BLE protocol
BLE5.1
-
Communication interface
UART
-
Package
SMD
-
Connector
1.27 mm
-
Size
11.6*16mm
-
Antenna
Ceramic antenna
50Ω Impedance

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4. Dimension and Pin Definition
1The internal level of the pin is self-latched. Ground directly or connect to the power supply when driving externally.
When driven by an external MCU, use compelling output control.
No.
Item
Direction
Application
Remarks
1
GND
Input
Ground
2
P0.25
--
NC
3
P0.26
--
NC
4
MOD1
Input
Mode selection
Low level: configuration mode;
High level: transparent transmission mode.

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引脚内部电平自锁存。为高电平时，内部上拉，为低电平，内部下拉。The internal level of the pin is self-latched. When
2Same as 1.
3引脚内部电平自锁存。为高电平时，内部上拉，为低电平，内部下拉。
4Same as 3。
5
WKP2
Input
Wake-up pin
Wake up: falling edge
Sleep: rising edge
6
DISC
Input
Disconnect pin
Internal pull up. Active on falling edge
7
LINK3
Output
Connection
Status
Bluetooth connection: low level
Bluetooth no connection: high level
8
DATA4
Output
Data indication
Data indication pin
9
GND
--
Ground
10
P0.02
--
NC
11
P0.03
--
NC
12
P0.04
--
NC
13
P0.05
--
NC
14
P0.06
--
NC
15
P0.07
--
NC
16
GND
--
Ground
Ground
17
VCC
--
Power is
positive
Power is positive
18
RXD
Input
UART RX pin
19
TXD
Output
UART TXpin
20
RTS
Output
Flow Control
Internal pull up
21
CTS
Input
Flow Control
Internal pull up
22
P0.21/RS
T
Power reset
Active low
23
SWDCL
K
--
--
--
24
SWDIO
--
--
--

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it is high, it is internally pulled up, and when it is low, it is internally pulled down.
Chart 4 1 Pin definition table
5. Function
5.1 Roles
The module supports three roles: single master, single slave, and observer.
Single master and single slave support connecting to other types of Bluetooth products of our company. Support
data transparent transmission, support custom broadcast gap, scan gap, connection gap, support setting PHY.
The observer is only used to print the broadcast information of the ble devices around the module and cannot be
connected. Also supports conditional filtering.
5.1.1 Master
1. AT+ROLE=1 to select the host role. Restart to take effect after changing the role;
2. Command AT+SCAN=1 to open the host scan function;
3. Print status information when the host connection status changes. See 6.3 Status Printing.
5.1.1.1 Condition filtering
The device can be configured to bind MAC address, service UUID filtering, RSSI filtering and NAME filtering.
The four filtering methods can be used simultaneously, or individually enabled or disabled, but the service UUID
filtering cannot be disabled.
Service UUID filtering: The broadcast data of the slave must contain a 16-bit UUID field, and the UUID is
0xFFF0.
MAC address filtering: If users need MAC address filtering, they need to enable MAC address filtering
through AT+BOND=1, and add MAC addresses to the host through AT+BONDMAC. After the master scans
the slave, if it is the same as the binding list MAC address and service UUID, the master automatically
connects to the slave device.
NAME filtering: The broadcast data of the slave must include a name field, and the name must be a full name.

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If it matches, it will automatically connect. The name matching method is partial matching. For example: the
name filter has been enabled and the filter name is "E104-BT50"; then "E104-BT50", "E104-BT501", and
"E104-BT5011" can all be matched successfully, but "1E104-BT50", E104-BT5 Will be filtered out.
RSSI filtering: The host can filter out modules that are less than the set filtering RSSI value.
5.1.2 slave
1. AT+ROLE=0 to select slave mode (valid after restart);
2. AT+ADV=1 to enable broadcast;
3. The broadcast switch is configured to be on, and it will automatically enter the broadcast state after power-on,
otherwise the broadcast device will not be found.
4. After receiving the host connection request, establish a Bluetooth connection to stop Bluetooth broadcasting and
enter the data transparent transmission mode.
The module broadcast data format is as follows:
FLAGE
Service UUID
MAC address
Name
Len
Type
Flage
Len
Type
Uuid
Lan
Type
Mac
type
Mac
Len
Type
name
1
1
1
1
1
2
1
1
1
6
1
1
Maximum 15 bytes
02
01
06
03
03
F0
FF
08
1B
01
A9 08 C0 70
D2 CE
0D
09
45 31 30 34 2D 42 54 35
30 31 31 41
Chart 5 -1 Broadcast packet format
In the IOS system, the MAC of the connected module cannot be obtained through the system API. The MAC in the
broadcast data packet provides a way for the IOS system to obtain the MAC address.
Broadcast packet data field description:
Field
Value
Description
FLAGEFLAGE
0x06（Fixed value）
ble general discovery mode, BR/DER is not
supported;
Service UUIDUUID
0xFFF0（Fixed value，Little
endian）
Module serviceUUID
MAC addressmac type
0x01（Fixed value）
Static random address

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MAC addressmac
6 bytes
Module MAC address
Chart 5 -2 Broadcast field description
5.1.3 Observer
1. Command AT+ROLE=2 to select the observation mode (valid after restart)
2. After receiving the broadcast, print out all the contents of the broadcast package through the serial port.
3. The observer device cannot be connected to any device.
The format is as follows:
LEN
MAC
RSSI
Advdata
1 byte
6 bytes
1 bytes
No more than 31 bytes
Chart 5- 3 Observer data output format
Note: LEN is the sum of MAC, RSSI, and broadcast data length.
4. During this period, only AT commands are valid, and data transparent transmission is not supported.
5. All observations support RSSI, name, mac address filtering;
5.2 Power mode
The module supports two power modes: low power consumption mode and wake-up mode.
5.2.1 Low power mode
The so-called low power consumption mode means that the BLE function continues to run after the module enters
this mode, and peripherals other than the wake-up pin of the module are turned off. If you need lower power
consumption, you can turn off broadcast and scan through AT commands, disconnect all connections, and set a longer
broadcast gap, scan gap, and connection gap.
Enter low power consumption:
1. AT command "AT+SLEEP" immediately enters low power consumption mode;
2. Pass the rising edge of pin WKP, and enter low power consumption immediately after the high level is
maintained for 200ms or more;
After the module enters the low power consumption mode, it outputs "STA: sleep" through the serial port

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(LOGMSG does not turn off the output).
Note:
1. 1. In the low-power mode, when the connection is not disconnected, such as ble receives air data, or the
connection status changes, the module temporarily wakes up and outputs the corresponding data, and
immediately enters sleep after the data output is completed. At this time, low power consumption or wake-up
will not output status data.
2. 2. If the serial port is configured for flow control and CTS fails, the low power consumption mode cannot be
entered.
5.2.2 Wakeup mode
The so-called wake-up mode means that the peripherals required by the module in this mode are in a normal
working state. After the module wakes up, it outputs the status "STA: wakeup".
1. Wake-up method:
2. 1. Wake up immediately after the falling edge of WKP pin, and the low level is maintained for more than
200ms;
3. 2. The serial port RX pin wakes up. The serial port rx falling edge, and the low level keeps 50us and
above, wake up immediately.
5.3 Data Transparent Transmission
The so-called data transparent transmission means that the data received by the serial port is sent to the other device
through BLE without any processing, and the data received by BLE is sent through the serial port without any
processing.
Regardless of the master, the slave role only supports data transparent transmission. The observer does not support
transparent data transmission.
5.4 MAC address binding
The module supports MAC address binding. If the MAC address binding function is enabled. The device only
connects to devices with added MAC addresses.

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5.5 Configuration
The module supports two configuration methods: serial port configuration and air configuration. The two
configuration methods are basically the same. Before the air configuration, the authentication password of
AT+AUTH=123456 must be passed. After the authentication is passed, the module is allowed to use the air configuration.
The air configuration authentication period is this connection, and re-authentication is required if the device is
disconnected and reconnected.
The module is in configuration mode before the connection is established. The Mod pin is invalid.
After the connection is successful, determine whether the module is currently in configuration mode or data
transmission mode according to the mod pin level. When mod is high, it is data transmission mode, when it is low, it is
configuration mode.
When the Mod pin detects a valid change, the current state is latched. The hold time for each state change is more
than 200ms valid.
The Mod pin does not affect the air configuration.
In configuration mode, the master sends data to “MAST CHANNEL”, and the slave returns “CONFIG BUSY”
through “SLAVE CHANNEL”.
5.6 Data indication
When the module outputs data through the serial port, the module sets the DATA pin to low level, indicating that
data is being sent. AT command response does not change the DATA pin state.
The module can turn on the data output delay through AT+DATALY=1. After the data output delay is turned on, the
module first pulls the DATA pin and outputs data after 10ms.
Chart 5- 4 Data output delay chart

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Chart 5-5 Data output without delay
5.6.1 Output delay
If the output delay is turned on, after the module receives the air data, it first pulls down the DATA pin, and then
outputs the data via UART after 10ms. It should be noted:
After the output delay is turned on, streaming is not supported. The maximum data size of each packet does not
exceed 244 bytes;
After the output delay is turned on, if the air data packet is received too fast, the entire data packet will be lost.
The output delay is usually applied to the user MCU sleep situation. After the module receives the air packet, it
wakes up the user MCU through the DATA pin, and outputs data through UART after the user MCU is stable.
5.7 UUID Description
Service UUID
FFF0 (not configurable)
characteristic value
UUID
Attribute
Description
SLAVE CHANNEL
FFF1（not
configurable）
read / notify
The slave sends the data, and the master
receives the data channel.
MAST CHANNEL
FFF2（not
configurable）
read / write
The host sends data and the slave receives
data channels
CONFIG CHANNEL
FFF3（not
configurable）
read / write / notify
Air configuration channel
Chart 5 -6 UUID list
When the module is in the slave role, it uses the NOTIFY method to send data. There are two ways for the
master to receive data from the slave: manual reading and automatic reception after using NOTIFY. The

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master role of Ebyte ble module can be automatically received by enabling NOTIFY, and the user does not
need to care. This receiving method is only used when the user develops APP, WeChat applet or master module
by himself.。
When the module is in the master role, it uses WRITE to send data.
Because of the difference between the master and slave data transmission methods, the throughput of the
number of slaves sent is much higher than the throughput of the master.
When using air configuration, the host uses WRITE to send AT commands, and the module uses NOTIFY to
respond to AT commands.
5.8 Long range
Long Range is a new feature added in BLE 5.0. The Long Range feature greatly improves the communication
distance of Bluetooth, which can reach thousands of meters in open areas. The increase of Bluetooth communication
distance also broadens its application scenarios.
Only need to set PHY to code to use long range. Note: The master and slave must be set to the same (code), and the
data throughput of this module is greatly reduced. If you use other modules of our company, modules of other companies
or mobile phones, you need to pay attention to whether it can support ble long range.