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RF-BM-S02 

www.szrfstar.com

                                                                                                                                                    V1.0 - May, 2020 

Shenzhen RF-star Technology Co., Ltd.                                                                                                                   

Page  2  of  23

                                               

1 Device Overview 

 

1.1 Description 

RF-BM-S02 is a Bluetooth Low Energy (BLE) module based on TI CC2540F256, an 8051 core BLE System-on-Chip 

(SoC). This PCB module integrates a 32 MHz crystal, a 32.768 kHz crystal, an LC balun, an RF matching filter, and a 

meander line PCB antenna. It is pre-programmed with the BLE 4.0 stack and an application communication protocol 

over its full speed USB interface. It can be used to design a USB dongle to easily establish BLE connection from a 

device to smart phones. Very low-power sleep modes are available. Short transition times between operating modes 

further enable low power consumption. RF-BM-S02 is pin-compatible with the RF-BM-S02A and RF-BM-S02I in SMT 

package, if the USB is not used on the RF-BM-S02 & RF-BM-S02I and the I

2

C/extra I/O is not used on the RF-BM-S02A. 

Compared to the RF-BM-S02 and RF-BM-S02I, the RF-BM-S02A provides lower RF current consumption. The RF-BM-

S02A does not have the USB interface of the RF-BM-S02 and RF-BM-S02I, and provides lower maximum output power 

in TX mode. The RF-BM-S02A also adds a HW I

2

C interface. 

1.2 Key Features 

 

RF 

Bluetooth low energy 4.0 compatible protocol 

stack for single-mode 

Excellent  link  budget  (up  to  97  dBm), 

Enabling  long-range  applications  without 

external front end 

Accurate  Digital  Received  Signal-Strength 

Indicator (RSSI) 

Suitable  for  systems  targeting  compliance 

with  worldwide  radio  frequency  regulations: 

ETSI  EN  300  328  and  EN  300  440  Class  2 

(Europe),  FCC  CFR47  Part  15  (US),  and 

ARIB STD-T66 (Japan) 

 

Microcontroller 

High-performance  and  low-power  8051 

microcontroller core 

In-system-programmable flash of 256 KB 

8-KB SRAM 

 Layout 

Few external components 

15.1 mm x 12.1 mm SMT Package 

Pin-compatible  with  RF-BM-S02A  and  RF-

BM-S02I (when not using USB or I2C) 

 Peripherals 

12  Bit  ADC  with  eight  channels  and 

configurable resolution 

Integrated  high-power  op-amp  and  ultra-low 

power comparator 

General-purpose  timers  (one  16-bits,  two  8-

bits) 

13 General-purpose I/O pins (19 × 4 mA, 2 × 

20 mA) 

32 kHz sleep timer with capture 

Two  powerful  USARTs  with  support  for 

several serial protocols 

Full speed USB interface 

IR generation Circuity 

AES security coprocessor 

Battery monitor and temperature sensor 

Each CC2540 contains a unique 48-bit IEEE 

address 

 

Low Power 

Active mode RX down to 19.6 mA 

Active mode TX (–6 dBm): 24 mA 

Summary of Contents for RF-BM-S02

Page 1: ...RF BM S02 Bluetooth Low Energy Module Version 1 0 Shenzhen RF star Technology Co Ltd May 15th 2020...

Page 2: ...B 13 7 17 4 100 RF BM S02 PCB 11 2 15 2 100 RF BM S02I IPEX 11 2 15 2 150 RF CC2540A1 PCB 15 2 24 1 100 CC2541 8051 256 8 0 RF BM S01A PCB 13 7 17 4 70 RF BM S02A PCB 11 2 15 2 70 RF BMPA 2541B1 PCB I...

Page 3: ...um output power in TX mode The RF BM S02A also adds a HW I2 C interface 1 2 Key Features RF Bluetooth low energy 4 0 compatible protocol stack for single mode Excellent link budget up to 97 dBm Enabli...

Page 4: ...tronics Human interface devices Keyboard mouse Remote control USB dongles Health care and medical Smart lighting 1 4 Functional Block Diagram Figure 1 Functional Block Diagram of RF BM S02 1 5 Part Nu...

Page 5: ...unctions 7 2 1 Module Parameters 7 2 2 Module Pin Diagram 8 2 3 Pin Functions 8 3 Specifications 10 3 1 Recommended Operating Conditions 10 3 2 Handling Ratings 10 3 3 Receiver RF Parameters 10 3 4 Tr...

Page 6: ...gram of RF BM S02 3 Figure 2 Part Number Conventions of RF BM S02 3 Figure 3 Pin Diagram of RF BM S02 8 Figure 4 Photos of RF BM S02 13 Figure 5 Recommended PCB Footprint of RF BM S02 mm 13 Figure 6 S...

Page 7: ...le 1 Parameters of RF BM S02 7 Table 2 Pin Functions of RF BM S02 8 Table 3 Recommended Operating Conditions of RF BM S02 10 Table 4 Handling Ratings of RF BM S01 10 Table 5 Table of Receiver RF Param...

Page 8: ...it Power Programmable 23 0 dBm 4 0 dBm Receiving Sensitivity low gain mode 87 dBm Receiving Sensitivity high gain mode 93 dBm GPIO 13 Crystal 32 MHz RAM 8 KB Flash 256 KB Package SMT Packaging Frequen...

Page 9: ...2 3 Pin Functions Table 2 Pin Functions of RF BM S02 Pin Name Chip Pin Pin Type Description 1 GND GND Ground 2 VCC Power Power supply 2 0 V 3 6 V 3 P22 P2 2 I O 4 P21 P2 1 I O 5 RESET RST RESET Reset...

Page 10: ...RF BM S02 www szrfstar com V1 0 May 2020 Shenzhen RF star Technology Co Ltd Page 9 of 23 14 P05 P0 5 I O 15 P04 P0 4 I O 16 P03 P0 3 I O 17 P02 P0 2 I O 18 P01 P0 1 I O...

Page 11: ...of RF BM S01 Items Condition Min Typ Max Unit Storage Temperature Tstg 40 25 125 Human Body Model HBM 2000 V Moisture Sensitivity Level 2 Charged Device Model 750 V 3 3 Receiver RF Parameters Table 5...

Page 12: ...l oscillator frequency 5 Difference between incoming symbol rate and the internally generated symbol rate 3 4 Transceiver RF Parameters Table 6 Table of Transceiver RF Parameters When measured on the...

Page 13: ...ivity MCU at 250 kHz TX mode 0 dBm output power no peripherals active low MCU activity MCU at 250 kHz 27 mA TX mode 4 dBm output power no peripherals active low MCU activity MCU at 250 kHz 31 6 mA Opt...

Page 14: ...0 May 2020 Shenzhen RF star Technology Co Ltd Page 13 of 23 4 Application Implementation and Layout 4 1 Module Photos Figure 4 Photos of RF BM S02 4 2 Recommended PCB Footprint Figure 5 Recommended P...

Page 15: ...to the long term stable operation of the whole machine The module should be far away from the power electromagnetic transformer high frequency wiring and other parts with large electromagnetic interfe...

Page 16: ...nd preferably vertically upward When the module is installed inside of the case a high quality antenna extension wire can be used to extend the antenna to the outside of the case 10 The antenna must n...

Page 17: ...tage is between the recommended values The module will be permanently damaged if the voltage exceeds the maximum value Please ensure the stable power supply and no frequently fluctuated voltage 2 Plea...

Page 18: ...245 Table 7 Temperature Table of Soldering and Reflow Profile Feature Sn Pb Assembly Pb Free Assembly Solder Paste Sn63 Pb37 Sn96 5 Ag3 0 Cu0 5 Min Preheating Temperature Tmin 100 150 Max Preheating...

Page 19: ...RF BM S02 www szrfstar com V1 0 May 2020 Shenzhen RF star Technology Co Ltd Page 18 of 23 4 8 Optional Packaging Figure 9 Optional Packaging Mode Note Default tray packaging...

Page 20: ...5 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...

Page 21: ...02 www szrfstar com V1 0 May 2020 Shenzhen RF star Technology Co Ltd Page 20 of 23 5 3 RoHS Report No DTI201801253515 Figure 12 RoHS Certificate 5 4 BQB Qualified Design ID B016552 Figure 13 BQB Certi...

Page 22: ...RF BM S02 www szrfstar com V1 0 May 2020 Shenzhen RF star Technology Co Ltd Page 21 of 23 5 5 Reach Reach Test Report No C150918025001 Figure 14 Reach Certificate...

Page 23: ...oo Wang 2018 02 26 V1 0 Update module operating and storage temperature range Add CE certificate Aroo Wang 2018 08 02 V1 0 Update company address Aroo Wang 2020 05 15 V1 0 Add TI CC254X BLE module lis...

Page 24: ...Y CO LTD Shenzhen HQ Add Room 601 Block C Skyworth Building High tech Park Nanshan District Shenzhen Guangdong China Tel 86 755 3695 3756 Chengdu Branch Add No B3 03 Building No 1 Incubation Park High...

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