Data Sheet
Table Of Contents
- 1 Overview and Key Features
- 1.2 Application Areas
- Features and Benefits
- 2 Specifications
- 3 Hardware Specifications
- 3.1 Block Diagram and Pin-out
- 3.2 Pin Definitions
- 3.3 Electrical Specifications
- 4 Functional Description
- 4.1 Power Management (includes brown-out and power on reset)
- 4.2 Clocks and Timers
- 4.3 RF
- 4.4 UART Interface
- 4.5 SPI Bus
- 4.6 I2C Interface
- 4.7 General Purpose I/O, ADC and PWM/FREQ
- 4.8 nRESET Pin
- 4.9 nAutoRUN Pin
- 4.10 RM1xx VSP Service and Modes
- 4.11 Two-Wire SWD Programming/Debug Interface
- 4.12 RM1xx on-board chip antenna characteristics
- 5 Hardware Integration Suggestions
- 6 Mechanical Details
- 7 Application Note for Surface Mount Modules
- 8 FCC and IC Regulatory Statements
- 9 CE Regulatory
- 10 EU Declarations of Conformity
- 11 Ordering Information
- 12 Bluetooth SIG Qualification
RM1xx LoRa/BLE Modules
Datasheet
https://connectivity.lairdtech.com/wireless-
modules/lorawan-solutions
24
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Figure 7: Difference between VSP bridge to UART mode and VSP Command mode
Table 21: vSP Modes
Mode
SIO_28 pin
nAutoRUN pin
VSP Bridge to UART Mode
Externally held HIGH
Externally held HIGH
VSP Command Mode
Externally held HIGH
Externally held LOW
SIO_28 High (externally) selects the VSP service, and together when nAutoRUN is also Low (externally) selects VSP
Command mode. If SIO_28 is High and whilst nAutoRUN is High (externally), this selects VSP Bridge to UART mode.
When SIO_28 on module is set HIGH (externally), VSP is enabled and auto-bridged to UART when connected. However, for
VSP Command mode, auto-bridge to UART is not required. With SIO_28 set to High and nAutoRUN set to Low, VSP
Command mode is entered and you can then download the smartBASIC application onto the module over the air (OTA)
from the phone (or tablet).
4.11 Two-Wire SWD Programming/Debug Interface
Note: JTAG required for upgrading between Central and Peripheral firmware.
Signal Name (hidden name) Pin No I/O Comments
nRESET (SWDIO) 22 I/O
NC (SWDCLK) 23 I
The connector for the (2-Wire SWD Programming/Debug Interface) MPN is as follows:
Reference
Part
Description
JP1 Note1
FTSH-105
Header, 1.27mm, SMD, 10-way, FTSH-105-01-L-DV Samtec
Note 1: Reference the RM1xx development board schematic. Figure 8 shows the wiring for the 2-Wire SWD
Programming/Debug Interface connector and RM1xx module hidden 2-Wire SWD Programming/Debug Interface
pins.
SIOI_28
nAutoRUN
Phone
or
Tablet
VSP service
Store in RM1XX
Out to UART
VSP Bridge to UART mode
VSP Command mode