Microchip Technology RN4870-I/RM128 Скачать руководство пользователя страница 31 | Manualshive

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Microchip Technology RN4870-I/RM128 Скачать руководство пользователя страница 31

RN4870/71

DS50002489E-page 28

2016-2021 Microchip Technology Inc.

5.3

Power Drop Protection

To prevent any problems that may arise when the power
supply goes below 1.9V, a power supply drop protection
circuit is recommended. Essentially, this circuit consists

of a Reset IC, which acts as an

Open-Drain

with a Delay

10 ms, and is triggered at a 1.8V power supply.

Figure 5-6

shows a recommended power drop

protection circuit.

FIGURE 5-6:

POWER DROP PROTECTION CIRCUIT













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Содержание RN4870-I/RM128

Страница 1: ...cation Text SYST 03YDHP471 Microchip has released a new Product Documents for the RN4870 71 Bluetooth Low Energy Module Data Sheet of devices If you are using one of these devices please read the docu...

Страница 2: ...fication Terms and Conditions If you wish to receive Microchip PCNs via email please register for our PCN email service at our PCN select register then fill in the required fields You will find instru...

Страница 3: ...rgy Module Data Sheet Affected Catalog Part Numbers CPN RN4870 I RM128 RN4870 I RM130 RN4870 I RM140 RN4870 V RM118 RN4870 V RM140 RN4870U V RM118 RN4871 I RM128 RN4871 I RM130 RN4871 I RM140 RN4871 V...

Страница 4: ...U 12 mm x 15 mm RN4871U 6 mm x 8 mm Applications Operational 20 C to 70 C Normal 40 C to 85 C Industrial Outputs only for RN4870 RF Analog Features MAC Baseband Higher Layer Features Profiles Private...

Страница 5: ...ions Department via E mail at docerrors microchip com We welcome your feedback Most Current Data Sheet To obtain the most up to date version of this data sheet please register at our Worldwide Website...

Страница 6: ...the firmware version At the time of publication the latest firmware version is 1 28 Ensure to check the product webpage for the latest part number and firmware version TABLE 1 2 PIN DESCRIPTION RN487...

Страница 7: ...Configured as the BLEDK_STATUS2_IND pin by default 15 17 6 9 P3_6 D I O GPIO default Input pulled high only for RN4870 Configured as the UART_RTS pin by default 16 18 16 16 P2_0 D I p System configura...

Страница 8: ...ult 28 30 9 12 P0_2 D I O AD2 LED0 Provides indication whether the module is in On Off mode 29 31 17 2 GND Power Ground reference 32 GND Power Ground reference 30 1 BT_RF A I O External antenna connec...

Страница 9: ...RN4870 71 DS50002489E page 6 2016 2021 Microchip Technology Inc...

Страница 10: ...2016 2021 Microchip Technology Inc DS50002489E page 7 RN4870 71...

Страница 11: ...pin along with the Status 2 pin to indicate the current status of the module Refer to Table 1 5 for details of the status indication Status 2 Use this indication pin along with the Status 1 pin to ind...

Страница 12: ...n open Transparent UART TABLE 1 6 TEST POINTS ON THE BOTTOM SIDE RN4870U RN4870 RN4871U RN4871 Symbol Description TP 1 TP 1 TP 3 TP 3 VCC_PA 1 55V RF PA LDO TP 2 TP 2 TP 1 TP 5 CLDO_O 1 2V CLDO Output...

Страница 13: ...RN4870 71 DS50002489E page 10 2016 2021 Microchip Technology Inc NOTES...

Страница 14: ...y 90 dBm RF TX Power 0 dBm Operating Temperature Range for RN4870 I and RN4871 I Modules 40 C to 85 C Operating Temperature Range for RN4870 V and RN4871 V Modules 20 C to 70 C Storage Temperature Ran...

Страница 15: ...ENT CONSUMPTION DURING APPLICATION MODE Test Mode Interval ms Average Current Consumption Advertising 1 2 3 20 1 061 mA 50 505 A 100 298 A 500 113 A 1000 89 A Connected 1 2 4 18 75 2 23 mA 50 2 13 mA...

Страница 16: ...FIGURE 3 1 POWER SCHEME System Configurator System Configurator System Configurator System Configurator Note 1 Ensure VDD_IO and MCU VDD voltages are compatible 2 Control and Indication ports are con...

Страница 17: ...ins on the RN4870 can also be configured through a Windows based User Interface UI configuration tool BLEDK3 RN4870 71 Note 1 Application includes ADC PWM RN4870 and I2C bus interface 2 BK_IN connecti...

Страница 18: ...n Figure 4 2 When laying out the host PCB the areas under the antenna must not contain any top inner layer or bottom copper as shown in Figure 4 3 A low impedance ground plane ensures the best radio p...

Страница 19: ...RN4870 71 DS50002489E page 16 2016 2021 Microchip Technology Inc FIGURE 4 2 RN4870 RECOMMENDED PCB FOOTPRINT FIGURE 4 3 RECOMMENDED MOUNTING DETAILS...

Страница 20: ...noise Pin 30 BT_RF is a 50 Ohm connection that can be connected to an external antenna such as a PCB trace antenna a com ponent chip antenna or through a host PCB 50 Ohm microstrip trace This trace ca...

Страница 21: ...RN4870 71 DS50002489E page 18 2016 2021 Microchip Technology Inc FIGURE 4 5 RN4870U RECOMMENDED PCB FOOTPRINT FIGURE 4 6 RN4870U RECOMMENDED PCB MOUNTING...

Страница 22: ...ure 4 8 When laying out the host PCB the areas under the antenna must not contain any top inner layer or bottom copper as shown in Figure 4 9 A low impedance ground plane ensures the best radio perfor...

Страница 23: ...RN4870 71 DS50002489E page 20 2016 2021 Microchip Technology Inc FIGURE 4 8 RN4871 RECOMMENDED PCB FOOTPRINT FIGURE 4 9 RN4871 RECOMMENDED PCB MOUNTING SUGGESTION...

Страница 24: ...d A low impedance ground plane ensures the best radio performance best range lowest noise Pin 1 BT_RF is a 50 Ohm connection that can be connected to an external antenna such as a PCB trace antenna a...

Страница 25: ...RN4870 71 DS50002489E page 22 2016 2021 Microchip Technology Inc FIGURE 4 11 RN4871U RECOMMENDED PCB FOOTPRINT FIGURE 4 12 RN4871U RECOMMENDED PCB MOUNTING...

Страница 26: ...PC JEDEC J STD 020 The module can be soldered to the host PCB using standard leaded and lead free solder reflow profiles To avoid damaging the module the following recommendations are given AN233 DS00...

Страница 27: ...RN4870 71 DS50002489E page 24 2016 2021 Microchip Technology Inc NOTES...

Страница 28: ...nt For accessing the various configuration and indication pins use Table 1 2 Table 1 3 Table 1 4 and Table 1 5 5 2 Reference Circuit Figure 5 2 through Figure 5 5 show the reference circuits for vario...

Страница 29: ...RN4870 71 DS50002489E page 26 2016 2021 Microchip Technology Inc FIGURE 5 2 RN4870 REFERENCE CIRCUIT FIGURE 5 3 RN4870U REFERENCE CIRCUIT...

Страница 30: ...2016 2021 Microchip Technology Inc DS50002489E page 27 RN4870 71 FIGURE 5 4 RN4871 REFERENCE CIRCUIT FIGURE 5 5 RN4871U REFERENCE CIRCUIT...

Страница 31: ...when the power supply goes below 1 9V a power supply drop protection circuit is recommended Essentially this circuit consists of a Reset IC which acts as an Open Drain with a Delay 10 ms and is trigg...

Страница 32: ...IO mask Set get GPIO states Read and write analog data PWM control only for RN4870 Reboot Factory default Enter and Exit Command mode Enter Low Power mode Enter Script mode Declare event handler Execu...

Страница 33: ...RN4870 71 DS50002489E page 30 2016 2021 Microchip Technology Inc NOTES...

Страница 34: ...own unique characteristics Data can be exchanged easily via Command API Private services are not registered with the Bluetooth SIG and therefore not inter operable with other Bluetooth Low Energy devi...

Страница 35: ...RN4870 71 DS50002489E page 32 2016 2021 Microchip Technology Inc NOTES...

Страница 36: ...al ceramic chip antenna Figure 8 1 and Figure 8 2 show the antenna performance on the modules FIGURE 8 1 RN4870 ANTENNA PERFORMANCE Parameter Values Frequency 2450 MHz Max Gain 1 63 dBi Efficiency 71...

Страница 37: ...ology Inc FIGURE 8 2 RN4871 ANTENNA PERFORMANCE Parameter Values Frequency 2442 MHz Max Gain 0 1 dBi Efficiency 42 7 Antenna Description Manufacturer Part Number Manufacturer ANT AANT3216LL00R2400A PI...

Страница 38: ...Appli cation mode Figure 9 2 shows the timing diagram for the module when it is powered on In Application mode when RN4870 71 is ready to talk to the MCU after Reset the module provides a UART respons...

Страница 39: ...s the error rate for various UART baud rates for the RN4870 71 module The system clock is running at 16 MHz TABLE 9 1 ERROR RATE FOR VARIOUS BAUD RATES ON THE RN4870 71 Set Baud Rate Measured Baud Rat...

Страница 40: ...xternal No 30 20 C to 70 C RN4871 V RMXXX On Board Yes 16 20 C to 70 C RN4871U V RMXXX External No 17 20 C to 70 C RN4870 I RMXXX On Board Yes 33 40 C to 85 C RN4871 I RMXXX On Board Yes 16 40 C to 85...

Страница 41: ...RN4870 71 DS50002489E page 38 2016 2021 Microchip Technology Inc NOTES...

Страница 42: ...pherals radio receivers etc and to additional authorization requirements for the non transmitter functions on the transmitter module i e Verification or Declaration of Conformity as appropriate e g Bl...

Страница 43: ...ry Division Knowledge Database KDB http apps fcc gov oetcf kdb index cfm 11 2 Canada The RN4870 71 module has been certified for use in Canada under Innovation Science and Economic Development Canada...

Страница 44: ...2 11 2 4 HELPFUL WEBSITES Innovation Science and Economic Development Canada ISED http www ic gc ca 11 3 Europe The RN4870 4871 module is Radio Equipment Directive RED assessed CE marked and has been...

Страница 45: ...uropean Radio Communications Committee ECC at http www ecodocdb dk Additional helpful websites are https ec europa eu growth single market european standards harmonised standards red_en Telecommunicat...

Страница 46: ...s labeled with its own KC mark The final product requires the KC mark and certificate number of the module Due to the limited size of the RN4871 the KC mark is not displayed on the module Therefore th...

Страница 47: ...4871 stereo audio modules have received compliance approval in accordance with the Telecom munications Act of the Federal Republic of Brazil National Telecommunications Agency ANATEL Customers seeking...

Страница 48: ...2 Table 1 4 and Table 10 1 Table 2 1 through Table 2 4 Figure 1 4 Figure 3 1 Figure 3 2 and Figure 4 7 Section to Section 11 0 Table 10 1 and Revision C December 2017 Table 2 1 to correct information...

Страница 49: ...RN4870 71 DS50002489E page 46 2016 2021 Microchip Technology Inc NOTES...

Страница 50: ...leases listing of seminars and events listings of Microchip sales offices distributors and factory representatives CUSTOMER CHANGE NOTIFICATION SERVICE customers current on Microchip products Subscrib...

Страница 51: ...RN4870 71 DS50002489E page 48 2016 2021 Microchip Technology Inc NOTES...

Страница 52: ...enna Temperature Range V 20 C to 70 C Various I 40 C to 85 C Industrial Package RM Radio Module Example RN4870 V RM118 Various temperature RN4870 I RM128 Industrial temperature Note 1 Tape and Reel id...

Страница 53: ...RN4870 71 DS50002489E page 50 2016 2021 Microchip Technology Inc NOTES...

Страница 54: ...meHub TimePictra TimeProvider WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the U S A Adjacent Key Suppression AKS Analog for the Digital Age Any Capacitor AnyIn Any...

Страница 55: ...27 5980 5300 China Xian Tel 86 29 8833 7252 China Xiamen Tel 86 592 2388138 China Zhuhai Tel 86 756 3210040 ASIA PACIFIC India Bangalore Tel 91 80 3090 4444 India New Delhi Tel 91 11 4160 8631 India...

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