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PDF RN4871 Data sheet ( Hoja de datos )

Número de pieza RN4871
Descripción Bluetooth 4.2 Low Energy Module
Fabricantes Microchip 
Logotipo Microchip Logotipo



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RN4870/71
Bluetooth® 4.2 Low Energy Module
Features
• Fully Qualified Bluetooth® Smart Module
• On-Board Bluetooth 4.2 Low Energy Stack
• ASCII Command Interface API over UART
• Scripting Engine for Hostless Operation
• Compact Form Factor – The RN4870/71 family
comes in four different sizes from 6 mm x 8 mm to
12 mm x 22 mm:
- RN4870: 12 mm x 22 mm
- RN4871: 9 mm x 11.5 mm
- RN4870U: 12 mm x 15 mm
- RN4871U: 6 mm x 8 mm
• Beacon Private Service for Beacon Services
• UART Transparent Service for Serial Data
Applications
• Remote Configuration Over The Air
Operational
• Operating Voltage: 1.9V to 3.6V (3.3V typical)
• Temperature Range: -20°C to +70°C
• Supports UART
• Up to Three Pulse Width Modulation (PWM)
Outputs
RF/Analog Features
• ISM Band 2.402 to 2.480 GHz Operation
• Channels: 0-39
• RX Sensitivity: -90 dBm
• TX Power: 0 dBm
• RSSI Monitor
MAC/Baseband/Higher Layer Features
• Secure AES128 Encryption
• GAP, GATT, SM, L2CAP and Integrated Public
Profiles
• Customer Can Create up to Five Public and Four
Private Services
• Keyboard I/O Authentication
• Software Configurable Role as Peripheral or
Central and Client or Server
Antenna Options
• Ceramic Chip Antenna (RN4870/RN4871)
• External Antenna Connection via RF pad
(RN4870U/RN4871U)
Applications
• Health/Medical Devices
• Sports Activity/Fitness Meters
• Beacon Applications
• Internet of Things (IoT) Sensor Tag
• Remote Control
• Wearable Smart Devices and Accessories
• Smart Energy/Smart Home
• Industrial Control
Description
The RN487x modules, based on Microchip's IS187x
Bluetooth LE ICs, provide a complete solution to
implement Bluetooth 4.2 Low Energy connectivity.
These modules are interfaced via a two- or four-wire
UART interface with Microchip's simple ASCII
command set for easy integration into most
applications. All products in the RN series can be
dynamically configured by the host microcontroller with
a few simple ASCII commands. The RN487x series
also supports on-board scripting to automate basic
operations without a host microcontroller. The RN4870
(12 mm x 22 mm) and RN4871 (9 mm x 11.5 mm)
modules combine Microchip's Bluetooth LE Silicon with
all necessary peripheral components and an on-board
chip antenna to create an easy to use/drop-in solution.
All modules in this series are Bluetooth SIG qualified.
The RN4870 and RN4871 include FCC modular
certification, as well as most other worldwide
government regulatory approvals. For a listing of the
latest certifications, go to www.microchip.com/wireless.
The RN4870U (12 mm x 15 mm) and RN4871U (6 mm
x 8 mm) offer compact, flexible, unshielded options for
designs that are extremely space constrained or need
to remotely locate the antenna.
2016 Microchip Technology Inc.
DS50002489A-page 1

1 page




RN4871 pdf
RN4870/71
TABLE 1-2: PIN DESCRIPTION (CONTINUED)
RN4870U RN4870 RN4871U RN4871 Name
Type
Description
30 —
1
— 33 —
Legend: Pin Type Abbreviations:
1 BT_RF A I/O External Antenna connection (50 ohms)
GND
Power Ground Reference
A = Analog D = Digital I/O = Input/Output I/p = Input O/p = Output
FIGURE 1-1:
PIN DIAGRAM - RN4870U
GND 1
VBAT 2
P2_2 3
VDD_IO 4
VDD_IO 5
ULPC_O 6
P2_3 7
BK_O 8
P2_7/TX_IND 9
P1_1 10
P1_2 11
P1_3 12
Top View
30 BT_RF
29 GND
28 P0_2/LED
27 P0_7
26 P3_5
25 P3_4
24 P3_3
23 P3_2
22 P3_1
21 UART_TX
20 UART_RX
Bottom View
30 1
TP-3
TP-3 VCC_RF
TP-1 VCC_PA
TP-1
TP-2
TP-2 CLDO_O
FIGURE 1-2:
PIN DIAGRAM - RN4870
Top View
GND 1
GND 2
33 GND
32 GND
Bottom View
33 1
GND 3
VBAT 4
P2_2 5
VDD_IO 6
VDD_IO 7
ULPC_O 8
P2_3 9
BK_O 10
P2_7/TX_IND 11
P1_1 12
P1_2 13
P1_3 14
31 GND
30 P0_2/LED
29 P0_7
28 P3_5
27 P3_4
26 P3_3
25 P3_2
24 P3_1
23 UART_TX
22 UART_RX
TP-3
TP-1
TP-3 VCC_RF
TP-1 VCC_PA
TP-2
TP-2 CLDO_O
2016 Microchip Technology Inc.
DS50002489A-page 5

5 Page





RN4871 arduino
3.0 INTERFACE PINS
Figure 3-1 shows the power scheme using a 3.3V
low-dropout regulator to the RN487x and a host MCU.
This scheme ensures that the same voltage is used for
both the module and the MCU.
FIGURE 3-1:
POWER SCHEME
RN4870/71
Figure 3-1 also shows the basic UART connections to
the host MCU.
Figure 3-2 shows the recommended connections for
running the RN4870/71 on coin cell battery.
RN4870/71/70U
System Configurator
Note 1:
2:
3:
Ensure VDD_IO and MCU VDD voltages are compatible
Control and Indication ports are configurable
To implement low-power operation, enable the UART_RX_IND
pin and connect to ground.
RN4871U
System Configurator
Note 1:
2:
3:
4:
5:
Ensure VDD_IO and MCU VDD voltages are compatible
Control and Indication ports are configurable
10 µF (X5R) and 330 ohm resistor are required for RN487x
BK_IN connects to VBAT for RN4871U
To implement low-power operation, enable the UART_RX_IND
pin and connect to ground.
2016 Microchip Technology Inc.
DS50002489A-page 11

11 Page







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