Datasheet RN4020 (Microchip) - 4

RN4020 TABLE 1-1: PIN DESCRIPTION Pin Name Description Function
1 GND Ground Ground 2 AIO2 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 3 AIO1 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 4 AIO0 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 5 UART TX UART Transmit (TX) Output 6 UART RX UART Receive (RX) Input Deep Sleep Wake; active-high to wake module from Deep Sleep. If the module runs without a host micro- 7 WAKE_SW Input; weak pull down controller, connect the UART_RX pin to VDD via a 10K resistor to conserve power in Deep Sleep. Command or MLDP mode – In Command mode, Input; Edge triggered; Change UART traffic is sent to the command interpreter. In 8 CMD/MLDP from High to Low to enter CMD MLDP mode, UART traffic is routed to the MLDP mode from MLDP mode Bluetooth LED connection, if active. 9 GND Ground Ground CONNECTION Default state is output. Active-high indicates the • Connection Status Indicator LED module is connected to a remote device. Active-low (Green LED) 10 PIO[1] indicates a disconnected state. Configurable as • PIO[1] SCK PIO[1] via software command. SCK for Diagnostics • SCK PWM1 and Factory Calibration if pin 17 is asserted. • PWM1 Default function is output used for MLDP data event indicator (Red LED). Active-high indicates MLDP • MLDP Data Indicator (Red MLDP_EV data received or UART console data pending. Low LED) PIO[2] level indicates no events. Event is only triggered in 11 • PIO[2] CS MLDP mode, when CMD/MLDP (pin 8) is high. • CS PWM2 Configurable as PIO[2] via “|I” and “|O” commands. CS for Diagnostics and Factory Calibration if pin 17 • PWM2 is asserted. Default function is an output used for Activity WS Indicator (Blue LED). High level indicates module is • WS (Blue LED) PIO[3] awake and active. Low level indicates module is in a • PIO[3] 12 MOSI Sleep state. Accessible as PIO[3] via “|>” and “|<” • MOSI PWM3 commands. MOSI for Diagnostics and Factory • PWM3 Calibration if pin 17 is asserted. PIO[4] MISO for Diagnostics and Factory Calibration if pin • PIO[4] 13 MISO 17 asserted. • MISO CTS Reserved for CTS if hardware flow control is enabled • CTS (input) 14 PIO[5] on the UART; active-low. • PIO[5] DS50002279B-page 4  2015 Microchip Technology Inc. Document Outline Features Operational RF/Analog Features MAC/Baseband/Higher Layer Features Applications Description 1.0 Device Overview FIGURE 1-1: RN4020 Top View FIGURE 1-2: RN4020 Pin Diagram FIGURE 1-3: RN4020 Block Diagram TABLE 1-1: Pin Description 2.0 General Specifications TABLE 2-1: General Specifications TABLE 2-2: Weight and Dimensions TABLE 2-3: Electrical Characteristics TABLE 2-4: Current Consumption TABLE 2-5: Current Consumption vs RF TX Power 3.0 Microcontroller to RN4020 Interface 3.1 CTS/RTS Hardware Flow Control 3.2 Microchip Low-energy Data Profile (MLDP) FIGURE 3-1: Interface Description 4.0 Physical Dimensions FIGURE 4-1: RN4020 Module Dimensions FIGURE 4-2: RN4020 Recommended PCB Footprint FIGURE 4-3: RN4020 Module Mounting Details FIGURE 4-4: RN4020 HOST PCB EXAMPLE Layout 5.0 Typical Application Schematic FIGURE 5-1: RN4020 Typical Application Schematics 6.0 ASCII Command API 7.0 Supported Services TABLE 7-1: Supported Public Services on RN4020(1) 7.1 Public and Private Services 7.2 PCB Antenna TABLE 7-2: Antenna Characteristics FIGURE 7-1: Efficiency FIGURE 7-2: Antenna Plot FIGURE 7-3: 3D Radiation Pattern And Antenna Orientation 7.3 Soldering Recommendations 8.0 Regulatory Approval 8.1 United States 8.2 Canada 8.3 Europe TABLE 8-1: RN4020 European Compliance Testing 8.4 Australia 8.5 New Zealand 8.6 Japan 8.7 Korea 8.8 Taiwan 9.0 Ordering Information TABLE 9-1: Ordering Information Bluetooth® Low Energy Module Most Current Data Sheet Errata Customer Notification System Appendix A: Revision History Revision A (June 2014) Revision B (September 2015) The Microchip Web Site Customer Change Notification Service Customer Support AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Worldwide Sales and Service