Dadoutek BB840F S Ultra Low Power Bluetooth 5.4 Module User Manual

Dadoutek BB840F S Ultra Low Power Bluetooth 5.4 Module

Product Information

Specifications

• SN : 2024-0105A V1.0
• Manufacturer : Best Of Best Holdings
• Model : BB840F(S)
• Bluetooth Version : 5.4
• Frequency Band : BLE: 2402-2480MHz
• Power Consumption :
  • VDD : 1.7-3.6V
  • VBUS : 4.35-5.5V
• On-chip DC-DC Buck Converter
• Peak Current in TX :
  • < 4.8 mA at 0dBm
  • < 14.8 mA at +8dBm
• Ram Retention : No
• Wake on RTC
• Sensitivity: -95dBm at 1Mbps PER

Product Usage Instructions

Module Connections

The BB840F module provides various interfaces for connection:

• UART : Universal Asynchronous Receiver-Transmitter
• USB : Universal Serial Bus
• SPI : Serial Peripheral Interface
• I2S : Integrated Inter-IC Sound
• I2C : Inter-Integrated Circuit
• ADC : Analog-to-Digital Converter
• PWM : Pulse Width Modulation

Power Supply

The BB840F module requires two power supplies:

• VDD : Supply voltage range of 1.7V to 3.6V
• VBUS : Supply voltage range of 4.35V to 5.5V

DC-DC Buck Converter

The module is equipped with an on-chip DC-DC buck converter, which helps regulate the power supply and reduces power consumption.

Transmission Power

The peak current in TX mode depends on the transmission power level:

• 0dBm : Peak current is less than 4.8mA
• +8dBm : Peak current is less than 14.8mA

RAM Retention and Wake on RTC

The BB840F module does not have RAM retention. It supports wake-on-real-time- clock (RTC) functionality, allowing it to wake up from sleep mode based on RTC events.

Sensitivity

The module has a high sensitivity level of -95dBm at a data rate of 1Mbps and a Packet Error Rate (PER).

FAQ

• Q: What is the frequency band of the BB840F module?
  • A : The BB840F module operates in the BLE frequency band of 2402-2480MHz.
• Q: What are the power supply requirements for the module?
  • A : The module requires a VDD supply voltage ranging from 1.7V to 3.6V and a VBUS supply voltage ranging from 4.35V to 5.5V.
• Q: Does the module have RAM retention?
  • A : No, the BB840F module does not have RAM retention.
• Q: Can the module wake up based on RTC events?
  • A : Yes, the BB840F module supports wake-on-real-time-clock functionality.
• Q: What is the sensitivity level of the module?
  • A : The module has a high sensitivity level of -95dBm at a data rate of 1Mbps and a Packet Error Rate (PER).

Ultra-Low-Power Bluetooth 5.4 module

Introduction

• BB840F is a high-performance,industrial,ultra low-power BLE 5.4 module,which based on Nordic SoC nRF52840.It provides rich interfaces such as UART, USB, SPI, I2S, I2C, ADC, PWM. At the same time,it adopts a small stamp package and convenient for engineers to develop.

Key features

• Frequency band
  • BLE : 2402～2480MHz
• Ultra low-power consumption
  • VDD 1.7～3.6V & VBUS 4.35~5.5V
  • On-chip DC-DC buck converter
  • < 4.8 mA peak current in TX (0dBm)
  • < 14.8mA peak current in TX(+8dBm )
  • 0.4 µA at 3V in System OFF mode,
  • no RAM retention
  • 1.5 µA at 3V in System ON mode,
  • no RAM retention, wake on RTC

High sensitivity

• 95dBm sensitivity(1Mbps,PER<30.8%)
• 103dBm sensitivity(125kbps,PER<30.8%)
• 20 to +8 dBm TX power, configurable in 4 dB steps
  • ARM®TrustZone® Cryptocell 310 security subsystem

Applications

• n Advanced computer peripherals and I/O devices
  • Mouse / keyboard / Multi-touch trackpad
• Interactive entertainment devices
  • Gaming controllers
  • Remote controls

Protocol support

• BLE4.0 / 4.1 / 4.2 / 5.4 compatible

• BLE: 1Mbps/ 500kbps /125kbps

• Microprocessor & Memory

• ARM®Cortex®-M4 32-bit processor with

• FPU, 64 MHz

• 1MB Flash and 256kB RAM
  Interface

• 46*General purpose I/O pins

• 1*USB2.0 full speed (12 Mbps) controller

• 2 UART / 4SPI / 2I2C / 4PWM

• 1I2S / 1PDM

• 1*high-speed 32MHz SPI

• 8*12bits ADC

• 1*WDT

Dimension

• 13.9mm×23mm×1.75mm(BB840F)
• 13.9mm×23mm×2.1mm(BB840FS)

Internet of Things (IoT)

• Smart home sensors and controllers
• Industrial IoT sensors and controllers

Ordering information

Introduction

Description

• BB840F(S) is a high-performance,industrial,ultra low-power BLE 5.4 module,which based on Nordic SoC nRF52840.It provides rich interfaces such as UART, USB, SPI, I2S, I2C, ADC, PWM. At the same time,it adopts a small stamp package and convenient for engineers to develop.

Specifications

Power consumption

| TX peak current: 14.8mA (+ 8dBm) TX peak current: 4.8mA (0dBm)

0.4 µA at 3V in System OFF mode, no RAM retention

1.5 µA at 3V in System ON mode, no RAM retention, wake on RTC

Digital interfaces| 4SPI / 2I2C / 2UART / 4PWM / 1I2S / 1PDM
Analog interfaces| 12 bit ADC (8 channels)
Timer| 532-bit timer / 3RTC / 1WDT
Peripherals| AES/RNG/PPI
GPIO| 46
Operation temperature| -40°C～85°C
Package| SMD (56 pins)
Dimension| 13.9mm23mm*1.75mm(BB840F) / 2.1mm(BB840FS)

• Specifications are shown in the following Table 1.1.

Pin assignments

Top view

Figure 2.1 BB840F pin assignments, top view

• Top view of BB840F is shown in Figure 2.1.
• PIN37 ~ 46 are at the bottom.

Pin assignments

P0.18 / nRESET

| Reset mode default(soft reset,active low) [Note]③

Digital I/O

Options for QSPI-CSN

21| VBUS| USB 5V Power supply，4.35 ~ 5.5V (recommended voltage range)
22| DM| USB Data-
23| DP| USB Data+
24| P0.14| Digital I/O
25| P0.16| Digital I/O
26| P0.13| Digital I/O
27| P0.15| Digital I/O
28| P0.17| Digital I/O
29| P0.20| Digital I/O
30| P0.22| Digital I/O / Options for QSPI-I/O

The BB840F pin assignment is shown in Table 2.1.

• Top view of BB840F is shown in Figure 2.1.
• PIN37 ~ 46 are at the bottom

1. Any GPIO can be mapped to a peripheral for layout flexibility，analog signal can be mapped to analog input pin only.
2. Low frequency I/O is a signal with a frequency up to 10 kHz.
3. The nRESET pin of BB840F can be used according to the product requirements.

32

|

P1.00

| Digital I/O

Serial wire output (SWO)

33| P1.06| Digital I/O (low frequency I/O only)

34

|

P0.09 / NFC IN1

| Digital I/O (low frequency I/O only) [Note]④

NFC ANT input1

35

|

P0.10 / NFC IN2

| Digital I/O (low frequency I/O only)

NFC ANT input2

36| GND| Power ground
37| P1.11| Digital I/O (low frequency I/O only)
38| P1.10| Digital I/O (low frequency I/O only)
39| P1.12| Digital I/O (low frequency I/O only)
40| P1.13| Digital I/O (low frequency I/O only)
41| P1.15| Digital I/O (low frequency I/O only)
42| P1.14| Digital I/O (low frequency I/O only)
43| P0.31 / AIN7| Analog input / Digital I/O (low frequency I/O only)
44| P0.29 / AIN5| Analog input / Digital I/O (low frequency I/O only)
45| P0.02 / AIN0| Analog input / Digital I/O (low frequency I/O only)
46| P0.30 / AIN6| Analog input / Digital I/O (low frequency I/O only)
47| P1.04| Digital I/O (low frequency I/O only)
48| P1.02| Digital I/O (low frequency I/O only)
49| P1.07| Digital I/O (low frequency I/O only)
50| P1.05| Digital I/O (low frequency I/O only)
51| P1.01| Digital I/O (low frequency I/O only)
52| P1.03| Digital I/O (low frequency I/O only)
53| P0.11| Digital I/O
54| P0.27| Digital I/O
55| VDDH| High voltage power supply，NC default.
56| DCCH| DC/DC converter output，NC default.

1.  Refer to the nRF52840 datasheet for NFC hardware design.

Specifications and parameters

Absolute maximum ratings

Table 3.1 Absolute maximum ratings

Item

| Parameter| ****

Description

---|---|---
Min| Max
VDD (V)| -0.3| 3.9| Exposure to absolute maximum ratings for prolonged periods of time may affect the

reliability of the device.[Note]⑤

VBUS (V)

| ****

-0.3

| ****

5.8

I/O pin voltage (V)| -0.3| VDD+0.3| VDD voltage≤3.6V
RF input level (dBm)| –| 10|
Reference transmission

distance (m)

| ****

–

| ****

80

| ****

Module to module, @0dBm[Note]⑥

Operating temperature (℃)| -40| +85|
Storage temperature (℃)| -40| +125| Normal temperature storage is recommended

ESD parameters

ESD

| Human Body Model| –| 2000V
Human Body Model Class| –| 2
Charged Device Model| –| 750V

1. Either VBUS mode or VDD mode can be selected.
2. The reference communication distance is closely related to hardware construction, test site environment, etc, which is for  reference only.

Operating conditions

Power consumption

temperature=25℃

[Note]⑧
Itx,peak| 4.8| mA| TX only run current (DC/DC),@0 dBm
| | |
ISleep| 2.4| μA| RF off,CPU WFI (wait for interrupt)/WFE (wait for event) sleep|
IDeep sleep| 1.5| μA| System OFF, no RAM retention, wake on RTC|
IPower-down| 0.4| μA| System OFF, no RAM retention, wake on reset|

IBroadcast@1s

| ****

28

| ****

μA

| DC-DC mode, +8dBm, 31 bytes, external 32.768kHz

crystal/±20ppm

|

IBroadcast@1s

| ****

17

| ****

μA

| DC-DC mode, 0dBm, 31 bytes, external 32.768kHz

crystal/±20ppm

|

1. tPOR,10us means the module power supply VDD to rise from 0V to 1.7V, the power-on reset active at 1ms. The module power-on reset circuitry may not function properly for rise times longer than the specified maximum.
2. The dynamic power consumption of BB840F may be affected by the software operating mode, sleeping mode and RF activity interval,etc. Users can use the official simulation tool (Online Power Profiler) to calculate the current caused by software modification or configuration for special requirements（https://devzone.nordicsemi.com/nordic/power）

RF parameters

Maximum RF input level

| ****

10

| ****

dBm

| Exposure to absolute maximum ratings for prolonged

periods of time may damaging it permanently

Typical application

• The typical application circuit of BB840F is shown in Figure 4.1.

Mechanical specifications

Dimensions

• The dimensions of BB840F & BB840FS is shown in the Figure 5.1 & Figure 5.2.

Table 5.1 Dimensions of BB840F(S)

PCB footprint

• The recommended PCB footprint of BB840F(S) is shown in Figure 5.3.

Welding instructions

Recommended temperature reflow profile

• The recommended SMT temperature reflow profile of BB840F is shown in Figure 6.1.

Part number & Selections

Part No.

|

SoC

| Frequency band| Transmission power| Bluetooth protocol|

Dimensions

|

Shield

|

Antenna type

---|---|---|---|---|---|---|---
BB840F| nRF52840| 2.4GHz| +8dBm| BLE5.4| 13.9 ×23×1.75mm| No| On board / PCB
BB840FS| nRF52840| 2.4GHz| +8dBm| BLE5.4| 13.9 ×23×2.1mm| Yes| On board / PCB

• The selection list related to BB840F is shown in Table 7.1.

Sales channel & Service

Shenzhen Best of Best Holdings Co., Ltd.

• Add ：Rm.1501A,East Tower,FIYTA Tech. Bldg., Southern District of Hightech Industrial Park,Nanshan District,Shenzhen 518057,P.R.China
• Tel ：86-755-86018818
• Fax ：86-755-86018808
• Web ：www.bobholdings.com

Beijing office

• Add ：Room 1006 Quantum Plaza，No.23 Zhi Chun Road，Hai Dian District，Beijing
• Tel ：86-10-82358601/2/3/4
• Fax ：86-10-82358605

Shanghai office

• Add ：Room 2003-2004, Mingshen Center Bldg., No. 3131 Kaixuan Rd.,Xuhui District, Shanghai, P.R.C.
• Tel ：86-21-54071701
• Fax ：86-21-54071702

Chengdu office

• Add ：Room 1402, Bldg#2, Shudu Center, No.138, Tianfu No.2 Street, Mid Section, Tianfu Avenue, HighTech District, Chengdu City, Sichuan Province, China
• Tel ：86-28-85355677
• Fax ：86-28-85350890

Guangzhou office

• Add： Room 620 6 floor, Ao Yuan City Plaza,hanxi avenueGuangzhou,China.
• Tel ：86-20-34776690

Revision history

FCC Statement

FCC standards : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Device is equipped with PCB antenna , Antenna gain -0.03dBi 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a  particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement

• This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: 2A6CI-BB840FS Or Contains FCC ID: 2A6CI-BB840FS” When the module is installed inside another device, the user manual of the host must contain below warning statements;

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

  *  **Note** : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
  * However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
  * Reorient or relocate the receiving antenna.
  * Increase the separation between the equipment and receiver.
  * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  * Consult the dealer or an experienced radio/TV technician for help.

2. Changes or modifications not expressly approved by the party responsible for compliance could void the
   user’s authority to operate the equipment. The devices must be installed and used in strict accordance with the manufacturer’s instructions as described in the user documentation that comes with the product.

• Any company of the host device which install the modular with modular approval should perform the test of radiated & conducted emission and spurious emission, etc. according to FCC part 15C : 15.247 and 15.209 & 15.207 ,15B Class B requirement, Only if the test result comply with FCC part 15C : 15.247 and 15.209 & 15.207 ,15B Class B requirement，then the host can be sold legally.

Copyright © 2024 Best of Best Holdings

References

• 深圳市好上好信息科技股份有限公司
• common-error-notfound - Nordic DevZone

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