AW-HM677 - 802.11ah Wi-Fi HaLow Module 43.3Mbps | AzureWave
MPN: AW-HM677 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
AW-HM677 Overview
Wi-Fi HaLow is the IEEE 802.11ah wireless standard designed specifically for the Internet of Things (IoT). Unlike conventional 2.4 GHz and 5 GHz Wi-Fi, HaLow operates below 1 GHz, where radio propagation attenuates far less through walls, vegetation, and over distance. In the wireless network hierarchy, 802.11ah sits alongside 802.11n/ac/ax as a member of the Wi-Fi family, trading bandwidth for roughly ten times the range and dramatically lower power consumption - making it a long-range, low-power alternative to LoRa, Sigfox, and Zigbee for IP-based connectivity.
Key features of the AW-HM677 include compliance with IEEE 802.11ah, PHY data rates up to 43.3 Mbps, support for 1, 2, 4, and 8 MHz channel bandwidths, and integration of the radio, PHY, and MAC functions in a single surface-mount module. The underlying Morse Micro MM8108 silicon provides improved range and power efficiency over the earlier MM6108 generation, with up to 1 km range capability and support for high densities of connected IoT devices.
Technically, the module integrates the MM8108 802.11ah radio with front-end circuitry, crystal, and RF matching on a certified LGA substrate, so designers avoid the RF layout, tuning, and regulatory-approval burden of a discrete chip design. The AW-HM677 carries FCC certification (FCC ID 2A74O-737B5B, authorized 902.5-927.5 MHz) and Japan MIC certification, substantially reducing end-product regulatory cost for North American and Japanese deployments.
Typical applications include smart city infrastructure, industrial IoT sensors and controllers, video surveillance links, smart agriculture, building automation, and access-point or gateway designs such as the Morse Micro HaLowLink 2, which uses the AW-HM677 as its 802.11ah radio alongside a MediaTek MT7621 CPU.
Design consideration: because the sub-1 GHz band regulations differ by region (transmit power is limited to 14 dBm in the EU including the UK and 16 dBm in Japan on hosts using this radio), firmware must enforce region-specific power tables, and antenna selection directly governs achievable link budget.
This page synthesizes datasheet data, FCC certification records, gateway reference designs, and module-family comparisons not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for AW-HM677 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AW-HM677 (same form factor and footprint) — differing in Modulation, Package Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AW-HM662
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MM8108-MF15457
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →AW-HM677 Specifications (manufacturer-published)
| Standard | IEEE 802.11ah (Wi-Fi HaLow) |
| Frequency Band | Sub-1 GHz license-exempt, 850-950 MHz |
| US Band (FCC) | 902.5-927.5 MHz |
| Max PHY Data Rate | 43.3 Mbps (256-QAM, 8 MHz bandwidth) |
| Modulation | Up to 256-QAM (MCS10) at 8 MHz |
| Channel Bandwidths | 1 / 2 / 4 / 8 MHz |
| Radio SoC | Morse Micro MM8108 |
| Integration | Radio + PHY + MAC fully integrated |
| FCC Certification | FCC ID 2A74O-737B5B (DTS), peak output 885 mW (29.5 dBm) listed |
| Japan Certification | MIC certified (tele.soumu.go.jp filing 201324004 addendum) |
| TX Power Limit EU/UK | 14 dBm (per HaLowLink 2 host limitation) |
| TX Power Limit Japan | 16 dBm (per HaLowLink 2 host limitation) |
| Package Type | LGA module |
| Mounting Type | Surface Mount |
| Typical Range | Up to 1 km (per Morse Micro MM8108 platform) |
AW-HM677 Interfaces & Connectors
No manufacturer-published interface list is available for AW-HM677. Refer to the manufacturer documentation for connector and header details.
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Typical Applications
AW-HM677 is suitable for 6 applications: Wi-Fi HaLow Access Points and Gateways, Industrial IoT Sensors and Controllers, Smart City and Smart Metering Infrastructure, Video Surveillance and Camera Backhaul, Smart Agriculture and Environmental Monitoring, Building Automation and Access Control.
Wi-Fi HaLow Access Points and Gateways
The AW-HM677 serves as the 802.11ah radio in the Morse Micro HaLowLink 2 gateway, where it connects up to 1000 IoT end devices over ranges approaching 1 km. In this role the module's 43.3 Mbps peak rate and 8 MHz 256-QAM capability provide enough backhaul headroom for aggregated sensor traffic plus occasional video, while its pre-certified FCC (2A74O-737B5B) and MIC approvals eliminate per-product radio certification. Placed behind a MT7621-class CPU with 256MB DRAM, the module offloads all PHY/MAC processing, so the host only handles IP routing. The key performance trade-off is TX power governance: firmware must clamp output to 26 dBm EIRP where allowed and to 14 dBm in the EU/UK or 16 dBm in Japan.
Recommended
Industrial IoT Sensors and Controllers
Sub-1 GHz propagation makes the AW-HM677 well suited to factories and plants where metal racking and concrete walls defeat 2.4 GHz links. The module's low power consumption supports battery- and coin-cell-adjacent sensor designs, and standard IP networking over 802.11ah removes proprietary-gateway lock-in: sensors talk directly to existing IT infrastructure through a HaLow access point. Channel bandwidths of 1 and 2 MHz improve link budget at range, while sleep modes in the MM8108 silicon minimize average current between reporting intervals. Engineers should budget antenna gain carefully since EU deployments are capped at 14 dBm EIRP; a well-matched antenna can recover several dB of margin versus a poorly placed chip antenna in dense industrial environments.
Recommended
Smart City and Smart Metering Infrastructure
Smart city deployments - streetlight controllers, parking sensors, utility meters - need kilometer-scale links that penetrate building envelopes without dense access-point grids. The AW-HM677's 850-950 MHz operation delivers roughly ten times the range of conventional Wi-Fi at comparable reliability, and 802.11ah's native support for thousands of associated stations per AP (demonstrated at 1000 devices on HaLowLink 2) suits high node-count districts. The module's integrated MAC handles 802.11ah-specific features such as RAW (Restricted Access Window) scheduling that reduces contention in large networks. Because the module is FCC DTS-certified at 902.5-927.5 MHz, US municipal deployments avoid per-SKU certification, accelerating time to field trial.
Recommended
Video Surveillance and Camera Backhaul
Among sub-GHz IoT radios, only Wi-Fi HaLow offers enough throughput for surveillance cameras, and the AW-HM677's 43.3 Mbps 256-QAM mode at 8 MHz bandwidth accommodates compressed video streams from remote or pole-mounted IP cameras where fiber or Ethernet runs are impractical. AzureWave's own 802.11ah portfolio positioning notes that higher-rate HaLow solutions 'can handle low-rate sensors to high-rate surveillance camera applications.' In practice the 1 and 2 MHz modes maintain the link at range, with automatic rate adaptation stepping up to 8 MHz as signal conditions permit. Designers should verify sustained throughput under regional power caps - 14 dBm in EU/UK reduces margin - and prefer high-gain directional antennas at fixed camera sites.
Recommended
Smart Agriculture and Environmental Monitoring
Farms and environmental networks span hundreds of hectares where cellular coverage is patchy and cabling impossible. The AW-HM677's approximately 1 km range per hop, low power profile, and IP-native networking let soil probes, weather stations, and irrigation valves connect through a single solar-powered HaLow gateway. Sub-GHz signals penetrate crop canopy and tolerate foliage attenuation far better than 2.4 GHz, and the module's 1 MHz narrowband modes extend link budget further at the cost of throughput - sufficient for telemetry at kilobit rates. Firmware should enforce regional band selection automatically (US 902.5-927.5 MHz versus other 850-950 MHz sub-bands), since the AW-HM677 supports worldwide sub-1 GHz license-exempt allocations within its 850-950 MHz tuning range.
Recommended
Building Automation and Access Control
Large commercial buildings benefit from HaLow's wall-penetrating sub-GHz propagation: one AW-HM677-based access point per floor can cover locks, thermostats, occupancy sensors, and HVAC controllers that would need multiple 2.4 GHz repeaters. The module's full radio-plus-PHY-plus-MAC integration shortens host MCU software bring-up because the 802.11ah stack runs on-module, and standard Wi-Fi security (WPA-style association at the MAC layer) meets enterprise requirements for credential-based access control traffic. Latency-sensitive door-control commands ride comfortably on the 43.3 Mbps air interface, whose per-station airtime is minimal at sensor data rates. Deployment planning should confirm channel plans per region, since 802.11ah channelization at 1-8 MHz differs from familiar 2.4 GHz Wi-Fi planning tools.
Recommended
Recommended Products Summary
Engineering reference data for AW-HM677 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AW-HM662 | MM8108-MF15457 |
|---|---|---|---|
| Package | LGA module | LGA module | LGA module (different footprint) |
| Brand | AzureWave | AzureWave | Morse Micro |
| Max PHY Data Rate | 43.3 Mbps | 15 Mbps | 43.3 Mbps |
| Channel Bandwidths | 1 / 2 / 4 / 8 MHz | 1 / 2 / 4 MHz | 1 / 2 / 4 / 8 MHz |
| Frequency Band | 850-950 MHz sub-1 GHz | Sub-1 GHz (802.11ah) | 850-950 MHz sub-1 GHz |
Key Differentiators
- Highest-throughput 802.11ah module tier (vs AW-HM662)
- Dual regulatory certifications out of the box (vs MM8108-MF15457)
- Generation-2 silicon efficiency (vs AW-HM662)
Design Notes
Enforce region-specific TX power tables in host firmware. Per the Morse Micro HaLowLink 2 gateway specification, transmit power is limited to 14 dBm in the EU (including the UK) and 16 dBm in Japan, while the hardware supports up to 26 dBm in other regions and the FCC filing lists a peak of 885 mW (29.5 dBm) for the 902.5-927.5 MHz band. Shipping firmware that exceeds regional EIRP limits voids the benefit of the module's FCC/MIC modular approval and creates a compliance violation for the end product.
As an LGA castellated module, the AW-HM677 must be laid out on the exact recommended land pattern from the AW-HM677_DS_DF_B_STD datasheet (document dated 2025-07-21). Keep RF feed and antenna trace 50-ohm controlled impedance with a solid ground reference, and do not route digital signals beneath the antenna keep-out area. Because the radio, PHY, and MAC are integrated on-module, no RF tuning or matching components are required on the host board - this is the primary advantage over a discrete MM8108 chip design.
Do not assume footprint interchangeability within the 802.11ah module family. The AW-HM677 (MM8108-based, 43.3 Mbps) and AW-HM662 (higher-power, 1/2/4 MHz, up to 15 Mbps) target different performance tiers, and Morse Micro's MM8108-MF15457 reference module uses a different mechanical footprint from the AzureWave module despite sharing the same silicon. Obtain mechanical drawings for any second source before committing a PCB revision, and confirm channel plans per market, since 802.11ah channelization at 1-8 MHz differs by regulatory domain.
Compliance Information
Radio regulatory compliance is well documented: FCC ID 2A74O-737B5B (DTS class, 902.5-927.5 MHz, application dated 2025-05-11) and Japan MIC certification (test report addendum 201324004). Environmental compliance (RoHS/REACH/halogen) not stated in provided sources - set to unknown pending AzureWave declaration.
