Reduce Host MCU Pins, Simplify PCB Routing, and Build Long‑Range Wireless Links with Ease
1. What Is the N620 Series?
The N620 family from Coral RF Technology integrates a powerful Sub‑1GHz transceiver with native I²C support, allowing sensors and peripherals to connect directly to the module—often eliminating the need for a separate host MCU.
Key variants:
All modules feature 1 µA sleep current, 1.8–3.8 V supply, and a 4‑layer PCB for excellent noise immunity.
2. Why I²C Integration Matters
Using I²C instead of SPI reduces host MCU pin count from 4–6 pins down to just 2 pins (SDA, SCL). Benefits include:
Cleaner PCB layout – share the same I²C bus with multiple sensors (temperature, humidity, accelerometer, etc.)
Lower BOM cost – often no separate MCU needed; the N620 can act as an I²C master
Event‑driven wake‑up – sensors can trigger the module from deep sleep (1 µA) for battery‑powered applications
The CC1310‑based variants support native I²C master/slave modes through programmable digital I/O pins.
3. Key Technical Specifications
| Frequency coverage | 868/915 MHz | Supply voltage | 1.8 – 3.8 V | Operating temp | -30°C to +75°C |
4. Supported Protocols & Standards
The N620 series works with multiple industry protocols: IEEE 802.15.4g, 6LoWPAN, Wireless M‑Bus, Wi‑SUN FAN, KNX RF, Amazon Sidewalk, TI 15.4‑Stack, and full proprietary modes.
5. Recommended Applications
Smart sensor networks (agriculture, environment, smart cities) – I²C sensors directly connected, years of battery life
Industrial wireless remote control – cranes, hoists, pumps – low pin count integration
Building automation & smart home – retro‑fit I²C thermostats, occupancy sensors, lighting
Wearables & medical telemetry – low power, small footprint, direct I²C sensor readout
Long‑range telemetry (automotive, robotics, agricultural machinery) – up to 8 km with N620PA
6. Development Support
Reference schematics for I²C bus integration
Driver code libraries (C for CC1310/Si4463)
AT command set for rapid prototyping
Smart RF Studio 7 configuration support
SPI control also available for high‑speed needs
Coral RF provides samples, evaluation boards, and customization services (PCB dimensions, pre‑flashed firmware, shielding, logo printing).
7. Certifications
FCC, CE, IC, RoHS, Reach – designed for global ISM band compliance.
8. Ordering Information
9. Why Coral RF?
20+ years in wireless module design
Full portfolio: 169 MHz to 2.4 GHz
I²C‑optimized architecture saves host pins and simplifies design
Fast integration with documentation and technical support
Works with low‑ to medium‑volume customers
Summary
The Coral RF N620 series is a powerful I²C‑integrated Sub‑1GHz wireless solution that minimizes host MCU dependency, simplifies PCB routing, and enables long‑range, low‑power IoT designs. From high‑power N620PA (8 km range) to cost‑effective Si4463 variants, there is an N620 for every application.
Contact Coral RF: info@coralradio.com | www.coralradio.com
