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
23
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PWM output signal has a frequency and duty cycle property. PWM output is generated using 32-bit hardware timers. The
timers are clocked by a one-MHz clock source. Frequency is adjustable (up to 1 MHz) and the Duty cycle can be set over
range from 0% to 100% (both configurable by smart
BASIC command). Note, the frequency driving each of the wo SIO pins is
the same but the duty cycle can be independently set for each pin.
FREQ output signal frequency can be set over a range of 0 Hz to 4 MHz (with 50% mark-space ratio).
4.8 nRESET Pin
Table 20: nRESET pin
Signal Name Pin No I/O Comments
nRESET 22 I
HW reset (active low). Pull the nRESET pin low for minimum
100mS in order for the RM1xx to reset.
4.9 nAutoRUN Pin
Refer to section nAutoRUN pin and Operating Modes regarding operating modes and the nAutoRUN pin.
Self-contained Run mode
Interactive / Development mode
4.10 RM1xx VSP Service and Modes
This section discusses VSP Command mode through pulling SIO_28 high and nAutoRUN low externally. Read this section in
conjunction with the VSP Configuration chapter of the RM1xx BLE Peripheral smartBASIC Extensions Guide, available under
the documentation tab of the Laird RM1xx product page, available at:
https://connectivity.lairdtech.com/wireless-modules/lorawan-solutions/sentrius-rm1xx-lora-ble-modules
Note: vSP modes are only available in peripheral firmware.
Figure 7 shows the difference between VSP Bridge to UART mode and VSP Command mode and how SIO_28 and nAutoRUN
need to be configured to select between these two modes.
VSP Bridge to UART mode takes data sent from phone or tablet (over BLE) and sends to RM1XX to be sent out of the
RM1XX UART (therefore data not stored on RM1XX).
VSP Command mode takes data sent from phone of tablet and sends to RM1XX and stores that data in the RM1XX.
The OTA Android or iOS application can be used to download any smartBASIC application script over the air to the
RM1XX.