Datasheet RN41XV, RN42XV (Microchip) - 7
| Manufacturer | Microchip |
| Description | Bluetooth Module |
| Pages / Page | 10 / 7 — RN4142XV-DS. 4.0. DESIGN CONCERNS. 4.3. Factory Reset Using GPIO4. 4.1. … |
| File Format / Size | PDF / 335 Kb |
| Document Language | English |
RN4142XV-DS. 4.0. DESIGN CONCERNS. 4.3. Factory Reset Using GPIO4. 4.1. Powering the Module. 4.2. Reset Circuit. 4.4. Connection Status
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RN4142XV-DS 4.0 DESIGN CONCERNS
ate the reset once power is stable. If not, designers can use one of the many low-cost power supervisor chips currently available, such as the MCP809, The following sections provide information on design- MCP102/121, and Torex XC61F. ing with the RN41XV and RN42XV module, including radio interference, factory reset, connection status, etc.
4.3 Factory Reset Using GPIO4 4.1 Powering the Module
Roving Networks recommends that designers connect GPIO4 (pin 8) to a switch, jumper, or resistor so it can Apply ONLY 3.3 V ±10% regulated power to pin 1 be accessed. This pin can be used to reset the module (VDD) and pin 10 (ground). The module does not have to its factory default settings, which is critical in situa- an on-board voltage regulator and MUST be powered tions where the module has been misconfigured. To from a regulated 3.3 V power supply. reset the module to the factory defaults, GPIO4 should be high on power-up and then toggle low, high, low,
4.2 Reset Circuit
high with a 1 second wait between the transitions. The RN41XV and RN42XV modules contain a 1kΩ pul- lup to VCC, and the reset polarity is active low. The
4.4 Connection Status
module’s reset pin has an optional power-on-reset cir- The RN41XV and RN42XV modules have an on-board cuit with a delay, which should only be required if the green LED to indicate the connection status. The con- input power supply has a very slow ramp or tends to nection status LED is located in the lower right corner bounce or have instability on power up. Often a micro- of the module. controller or embedded CPU I/O is available to gener-
TABLE 4-1: CONNECTION STATUS LED LED Status Description
Blink at 1 Hz The module is discoverable and waiting for a connection. Blink at 10 Hz The module is in command mode. Solid The module is connected to another device over Bluetooth. www.rovingnetworks.com Version 1.0 12/3/12 page 7 Document Outline Features: Applications: 1.0 Description 2.0 Overview FIGURE 2-1: RN41XV & RN42XV Dimensions 3.0 Typical Application Schematic FIGURE 3-1: Application Schematic, Note 1 4.0 Design Concerns 4.1 Powering the Module 4.2 Reset Circuit 4.3 Factory Reset Using GPIO4 4.4 Connection Status 5.0 Compliance Information 6.0 Ordering Information
ate the reset once power is stable. If not, designers can use one of the many low-cost power supervisor chips currently available, such as the MCP809, The following sections provide information on design- MCP102/121, and Torex XC61F. ing with the RN41XV and RN42XV module, including radio interference, factory reset, connection status, etc.
4.3 Factory Reset Using GPIO4 4.1 Powering the Module
Roving Networks recommends that designers connect GPIO4 (pin 8) to a switch, jumper, or resistor so it can Apply ONLY 3.3 V ±10% regulated power to pin 1 be accessed. This pin can be used to reset the module (VDD) and pin 10 (ground). The module does not have to its factory default settings, which is critical in situa- an on-board voltage regulator and MUST be powered tions where the module has been misconfigured. To from a regulated 3.3 V power supply. reset the module to the factory defaults, GPIO4 should be high on power-up and then toggle low, high, low,
4.2 Reset Circuit
high with a 1 second wait between the transitions. The RN41XV and RN42XV modules contain a 1kΩ pul- lup to VCC, and the reset polarity is active low. The
4.4 Connection Status
module’s reset pin has an optional power-on-reset cir- The RN41XV and RN42XV modules have an on-board cuit with a delay, which should only be required if the green LED to indicate the connection status. The con- input power supply has a very slow ramp or tends to nection status LED is located in the lower right corner bounce or have instability on power up. Often a micro- of the module. controller or embedded CPU I/O is available to gener-
TABLE 4-1: CONNECTION STATUS LED LED Status Description
Blink at 1 Hz The module is discoverable and waiting for a connection. Blink at 10 Hz The module is in command mode. Solid The module is connected to another device over Bluetooth. www.rovingnetworks.com Version 1.0 12/3/12 page 7 Document Outline Features: Applications: 1.0 Description 2.0 Overview FIGURE 2-1: RN41XV & RN42XV Dimensions 3.0 Typical Application Schematic FIGURE 3-1: Application Schematic, Note 1 4.0 Design Concerns 4.1 Powering the Module 4.2 Reset Circuit 4.3 Factory Reset Using GPIO4 4.4 Connection Status 5.0 Compliance Information 6.0 Ordering Information
