MAX32666GXMBT+ - Dual-Core Cortex-M4/M4F BLE 5 MCU | ADI
Teilenummer: MAX32666GXMBT+ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $10.45 | $10,45 |
| 10 | $9.84 | $98,40 |
| 100 | $9.21 | $921,00 |
| 500 | $8.65 | $4.325,00 |
| 1.000 | $7.92 | $7.920,00 |
MAX32666GXMBT+ Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one silicon die. The Cortex-M4 family adds a single-precision hardware floating-point unit (FPU) for DSP-class math, and a dual-core MCU further partitions responsibilities - one core runs application logic while the other offloads wireless stack, sensor fusion, or security tasks - reducing wake events and total system energy per task.
Key features of the MAX32666GXMBT+ include Bluetooth 5 LE with 2 Mbps high-throughput and 4x long-range PHY modes, ADI TrustZone-style hardware secure element (TRUST), secure boot, true random number generator, AES-256, and SHA-256 accelerators. The integrated DC-DC converter and multiple low-power modes (Active, Sleep, Deep Sleep, Backup, Standby) yield system-level current as low as a few microamps in deep-sleep retention, critical for coin-cell and rechargeable wearables.
Architecturally, the part is fabricated in a low-leakage CMOS process and uses ADI's ultra-low-power design IP. The radio block shares the same die as the application cores, eliminating external balun-matching complexity when paired with the recommended chip antenna. Hardware crypto accelerators offload TLS / DTLS handshake workloads so the M4F core can remain idle, further improving energy per transaction.
Typical applications include fitness bands and smartwatches, medical wearable patches (continuous glucose monitor, SpO2), secure IoT endpoints (BLE sensor nodes), industrial asset trackers, and hearables / wireless earbuds. The wide 1.71-3.6V supply range supports direct Li-ion battery connection with internal regulation, simplifying the power tree.
When designing with this part, allocate the secondary core exclusively to the BLE stack and security; do not share it with general application code. Validate PCB stack-up against the CTBGA escape pattern in the package diagram, and place the DC-DC inductor within 2mm of the LX pin to keep ripple below the AES engine's noise floor.
Drop-in-Alternativen für MAX32666GXMBT+ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MAX32666GXMBT+T
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX32665GXMBT+
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX32666GWEBT+
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX32666GXMBT+ Grenzwerte & elektrische Eigenschaften
| Core Architecture | ARM Cortex-M4 with FPU + Cortex-M4F (dual-core DARWIN) |
| Core Count | 2 |
| Maximum CPU Clock | 96 MHz |
| Bus Width | 32-bit |
| Program Flash Memory | 1 MB |
| SRAM | 192 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Betriebstemperaturbereich | -40 C to +105 C |
| Wireless Radio | Bluetooth 5 LE (2 Mbps, 4x long range) |
| ADC Resolution | 10-bit |
| I/O Count | 50 |
| Communication Interfaces | I2C, SPI, UART/USART, USB |
| Hardware Security | Secure Boot, TRNG, AES-256, SHA-256, TRUST secure element |
| Gehäuse | 121-CTBGA (8x8 mm) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
MAX32666GXMBT+ Pin-Konfiguration
| Pin A1 | GND — Ground |
| Pin A2 | VDD — Core supply voltage |
| Pin A3 | ANT — RF antenna connection (50 ohm) |
| Pin B1 | GPIO0 — General purpose I/O 0 |
| Pin B11 | RESET — Active-low reset input |
| Pin C5 | SWDIO — Serial wire debug I/O |
| Pin C6 | SWCLK — Serial wire clock |
| Pin D7 | VBAT — Battery supply input |
| Pin K11 | USB_DP — USB D+ data line |
| Pin K10 | USB_DM — USB D- data line |
Typische Anwendungen
MAX32666GXMBT+ ist geeignet für 7 Anwendungs: Smart Fitness Wearables, Continuous Glucose Monitor (CGM) Patches, Wireless Hearables & Earbuds, Secure IoT Sensor Endpoints, Asset Tracking & Cold-Chain Loggers, Smart Home BLE Hubs & Bridges, Medical Wearable ECG Patches.
Smart Fitness Wearables
The MAX32666GXMBT+'s 96 MHz dual-core Cortex-M4F with FPU runs an RTOS plus BLE 5 stack concurrently, while deep-sleep current in the microamp range preserves coin-cell runtime. Its 1 MB Flash stores firmware plus BLE GATT tables; 192 KB SRAM accommodates step-count, heart-rate, and SpO2 sensor fusion buffers. The integrated Bluetooth 5 LE radio delivers 2 Mbps throughput for music control on next-gen bands without an external PA, and the 121-CTBGA 8x8 mm package fits inside a wrist-worn form factor.
Empfohlen
Continuous Glucose Monitor (CGM) Patches
The MAX32666GXMBT+ is well-suited to disposable CGM patches because its dual-core architecture dedicates one core to BLE 5 LE advertising and secure data transmission while the other runs the sensor-sampling pipeline. Hardware AES-256 / SHA-256 accelerators protect patient telemetry, satisfying IEC 62443 medical cybersecurity guidance. The 1.71-3.6V supply accepts a single zinc-air or Li-Po cell directly, and the 192 KB SRAM keeps a 14-day rolling glucose history in memory without external storage.
Empfohlen
Wireless Hearables & Earbuds
For true-wireless earbuds, the MAX32666GXMBT+ runs Bluetooth 5 audio streaming plus touch / proximity sensing on the dual Cortex-M4F cores while keeping active power under 5 mA. The 1 MB Flash holds audio codecs and aptX-style profiles; 192 KB SRAM holds a single audio frame buffer plus EQ tables. Integrated DC-DC and LDO eliminate external power-tree complexity, and the CTBGA-121 8x8 mm footprint allows placement inside an earbud stem of just 6 mm diameter.
Empfohlen
Secure IoT Sensor Endpoints
Industrial IoT sensors benefit from the MAX32666GXMBT+'s secure boot, TRNG, and AES-256 accelerator, which together offload TLS / DTLS handshake from the application core. Bluetooth 5 LE Coded PHY (4x range) extends coverage to warehouses and factories where line-of-sight is limited. The 1 MB Flash holds over-the-air update images with dual-bank A/B redundancy, and the 192 KB SRAM retains sensor queues through deep-sleep. Operating temperature -40 C to +105 C suits outdoor enclosures.
Empfohlen
Asset Tracking & Cold-Chain Loggers
The MAX32666GXMBT+ powers long-life Bluetooth 5 LE asset tags with the LE Coded PHY (125 kbps, 4x range) for warehouse and shipping-container visibility. Its Cortex-M4F application core runs a small RTOS plus location beacons while the network co-processor manages the stack; both cores wake only on schedule, giving multi-year battery life on a CR2032 cell. The 192 KB SRAM buffers location history between gateway syncs, and the 1 MB Flash holds firmware updates via OTA.
Empfohlen
Smart Home BLE Hubs & Bridges
As a home-automation bridge, the MAX32666GXMBT+ aggregates BLE Mesh sensors and relays commands to Wi-Fi or Thread border routers. The 1 MB Flash stores mesh firmware plus a GATT proxy table, while 192 KB SRAM keeps node-table updates without flash thrash. The integrated secure element (TRUST) prevents device impersonation in mesh join operations. The 121-CTBGA 8x8 mm package fits a wall-switch form factor, and the -40 C to +105 C range tolerates outdoor junction boxes.
Empfohlen
Medical Wearable ECG Patches
The MAX32666GXMBT+'s dual-core architecture is ideal for ECG patches: one core handles continuous ADC sampling at 1 ksps while the other manages BLE 5 LE transmission with hardware AES-256 for HIPAA-compliant data. The 192 KB SRAM holds a rolling 30-second ECG buffer, and the 1 MB Flash stores the analytics algorithm plus a 7-day session log. The -40 C to +105 C operating range tolerates body-temperature variation during long wear periods and survives shipping thermal cycles.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MAX32666GXMBT+ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MAX32666GXMBT+T | MAX32665GXMBT+ | MAX32666GWEBT+ |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 121-CTBGA (8x8 mm) | 121-CTBGA (8x8 mm) - same | 121-CTBGA (8x8 mm) - same | 121-CTBGA (8x8 mm) - same |
| Core Architecture | Dual Cortex-M4F + Cortex-M4 (DARWIN) | Dual Cortex-M4F + Cortex-M4 (identical) | Single Cortex-M4F (1 core) | Dual Cortex-M4F + Cortex-M4 (identical) |
| Maximum CPU Clock | 96 MHz | 96 MHz | 96 MHz | 96 MHz |
| Flash Memory | 1 MB | 1 MB | 1 MB | 1 MB |
| SRAM | 192 KB | 192 KB | 192 KB | 192 KB |
| Bluetooth Version | BLE 5 (2M / 4x range) | BLE 5 | BLE 5 | BLE 5 |
| Supply Voltage Range | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| Hardware Security | TRUST, AES-256, SHA-256, TRNG | Same | Same | Same |
Wichtigste Unterscheidungsmerkmale
- Dual-core Cortex-M4F architecture with dedicated network co-processor (vs. MAX32665GXMBT+)
- Integrated TRUST secure element and hardware crypto accelerators (vs. MAX32666GXMBT+T (identical silicon, same security))
- 121-CTBGA 8x8 mm footprint with 50 user GPIO (vs. MAX32666GWEBT+ (identical package, different revision))
Designhinweise
Estimated: at VDD = 3.0 V and an active duty cycle of 10% (deep sleep current ~3 uA, active current ~15 mA), average system current is approximately (0.1 * 15 mA) + (0.9 * 3 uA) ~= 1.5 mA. On a 200 mAh CR2032 coin cell, expected runtime is roughly 130 hours. For coin-cell life >1 year, push the active duty cycle below 1% by leveraging the network co-processor for stack handling.
Place the DC-DC inductor within 2 mm of the LX pin and use a shielded ferrite with low DCR (under 0.5 ohm) to keep switching noise out of the AES engine. The CTBGA-121 0.5 mm pitch requires a 4-layer PCB stack-up with 1 oz copper; route the ANT trace on the top layer with grounded coplanar waveguide and follow the manufacturer's reference antenna footprint exactly to preserve the 50 ohm match and BLE 5 sensitivity.
Do not assign application tasks to the network co-processor; the second core is reserved for the BLE 5 stack and security engine. Sharing it will break the radio scheduler and reduce throughput below the 2 Mbps high-throughput PHY. Also, the secure boot fuse bank is one-time-programmable - validate firmware image signing in development before sealing production units.
Estimated: at 96 MHz continuous active on both cores with VDD = 3.3 V, the CTBGA-121 dissipates approximately 0.3 W. With theta_JA = 30 C/W on a 4-layer 1 oz JEDEC board, junction temperature rises ~9 C above ambient - well within the 105 C rating for typical wearable use. For sealed enclosures with no airflow, validate with a thermocouple on the BGA center during regulatory testing.
Compliance-Informationen
RoHS and lead-free per JLCPCB and DigiKey product listings as of 2026-10-09. Not AEC-Q100 qualified - medical / industrial wearables only.
