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Analog Devices Inc./Maxim Integrated MAX32620IWGL+
- Part No.:
- MAX32620IWGL+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 81-WFBGA, WLBGA
- Datasheet:
-
MAX32620IWGL+.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 81WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
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Product details
Overview
MAX32620IWGL+ from Maxim Integrated is an ultra-low-power Arm® Cortex®-M4 with FPU microcontroller designed for wearable and IoT edge nodes. It integrates 2MB flash, 256KB SRAM, a 96MHz/4MHz dual-frequency internal oscillator, hardware AES-128/192/256 engine, and a 10-bit sigma-delta ADC-enabling continuous sensor monitoring in sport watches and medical patches with sub-microwatt sleep modes.
For engineers reviewing the MAX32620IWGL+ datasheet, MAX32620IWGL+ pinout, MAX32620IWGL+ application, or MAX32620IWGL+ equivalent, this page delivers verified technical context, power-mode trade-offs, USB 2.0 full-speed timing compliance, GPIO voltage flexibility (1.8V–3.3V), and secure boot architecture critical for battery-constrained, safety-aware designs.
Technical Context
The MAX32620IWGL+ implements a tightly coupled memory architecture with 8KB instruction cache and supports SPI execute-in-place (SPIX) for external memory expansion. Its intelligent PMU enables three low-power modes: LP0 (1.06µW with RTC), LP1 (2.67µW with 5µs wakeup), and LP2 (28µW/MHz), each with distinct clock gating and supply domain control.
It features a fully integrated USB 2.0 full-speed transceiver with internal DP/DM termination, 4-channel 10-bit sigma-delta ADC with 7.8kS/s sampling and ±5.5V-tolerant AIN[1:0] inputs, and six 32-bit timers plus sixteen pulse train engines for precise waveform generation in sensor fusion and motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU - enables high-efficiency floating-point signal processing for sensor algorithms without external DSP. |
| Memory | 2MB flash / 256KB SRAM - supports complex firmware, over-the-air updates, and real-time data buffering in standalone wearables. |
| Power Modes | LP0: 1.06µW (RTC active); LP1: 2.67µW with 5µs wake-up - extends coin-cell battery life to multi-year operation in always-on health monitors. |
| ADC | 4-input, 10-bit sigma-delta, 7.8kS/s, 5.5V-tolerant on AIN[1:0] - directly interfaces unconditioned biomedical sensors without external level-shifting. |
| USB Interface | Full-speed USB 2.0 with internal transceiver - eliminates external PHY, reduces BOM cost and PCB area in diagnostic dongles and programming fixtures. |
| Security | Hardware AES-128/-192/-256 engine - accelerates encrypted firmware updates and secure sensor data transmission without CPU overhead. |
| Operating Range | -30°C to +85°C - qualified for clinical-grade wearable patches and outdoor sports electronics under thermal stress. |
Pinout & Package
MAX32620IWGL+ is packaged in a 100-pin TQFP-EP (exposed pad) with 0.5mm pitch, optimized for thermal dissipation and board-level reliability in compact wearable assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD12 | Core supply rail | 1.2V regulated input powering CPU, SRAM, and digital logic; requires local 1µF bypassing for stable low-power operation. |
| VDDIO / VDDIOH | I/O supply rails | Independent 1.8–3.3V supplies per GPIO bank - enables mixed-voltage interfacing (e.g., 1.8V sensors + 3.3V BLE radio) without level shifters. |
| DP / DM | USB differential pair | Integrated full-speed transceiver pins with internal 1.5kΩ pull-ups - supports plug-and-play USB connectivity with zero external components. |
| AIN0–AIN3 | Analog inputs | Four dedicated sigma-delta ADC inputs; AIN[1:0] tolerate up to 5.5V - accept direct connection from ECG electrodes or thermistor dividers. |
| RSTN / SRSTN | Reset inputs | Hardware reset (RSTN) tied to VRTC for brown-out resilience; software reset (SRSTN) enables core-only restart without disrupting RTC or debug interface. |
| TCK / TMS / TDO / TDI | JTAG/SWD debug interface | Standard ARM Serial Wire Debug pins with 25kΩ internal pull-ups to VDDIO - simplifies production programming and field diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency oscillator | 96MHz for compute-intensive tasks; 4MHz for ultra-low-power always-on sensing - eliminates need for external crystal switching circuitry. |
| SPI Execute-in-Place (SPIX) | Direct code execution from external SPI flash - expands effective program memory beyond 2MB while minimizing SRAM footprint. |
| Flexible I/O voltage control | Per-pin selection of VDDIO or VDDIOH supply - allows simultaneous 1.8V and 3.3V peripheral interfacing on same port without external translators. |
| 16 Pulse Train Engines | Independent hardware waveform generators - drive LED arrays, piezo buzzers, or motor phases without CPU intervention or timer resource contention. |
| Three watchdog timers | Independent clock sources (32kHz, 4MHz, 96MHz) - provides layered system supervision for fail-safe operation in medical devices. |
Applications
| Sport Watches | Fitness Monitors |
|---|---|
Use Scenario: GPS-synchronized timekeeping with heart rate, motion, and ambient light sensing during multi-day outdoor activities. IC Role / Device Role / Timing Role: Central MCU managing sensor fusion, Bluetooth LE communication, and display refresh via integrated peripherals. Use Value: 4MHz low-power mode sustains real-time step counting and RTC at <2.7µW, enabling >14-day battery life on a 100mAh cell. |
Use Scenario: Continuous optical PPG and 3-axis accelerometer logging during sleep and exercise cycles. IC Role / Device Role / Timing Role: Signal processor executing adaptive filtering and activity classification algorithms using FPU-accelerated math. Use Value: Hardware AES encrypts biometric data before BLE transmission, meeting HIPAA-compliant data-at-rest and data-in-transit requirements. |
| Wearable Medical Patches | Portable Medical Devices |
Use Scenario: Single-use, FDA-cleared ECG patch monitoring arrhythmia over 72 hours with wireless alerting. IC Role / Device Role / Timing Role: Analog front-end controller digitizing raw electrode signals via 10-bit sigma-delta ADC with programmable gain. Use Value: AIN[1:0]'s 5.5V tolerance accepts direct connection to high-impedance ECG leads, eliminating external op-amp biasing stages. |
Use Scenario: Handheld spirometer capturing flow-volume loops with pressure and temperature compensation. IC Role / Device Role / Timing Role: Real-time coordinator of analog sensor acquisition, USB mass-storage-class data export, and LCD UI rendering. Use Value: Integrated USB 2.0 full-speed interface enables direct PC connection for clinical report generation without proprietary drivers or dongles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M4 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52840 | Integrated BLE 5.0 radio; 1MB flash; no hardware AES-256; higher active current (3.5mA @ 64MHz) | Better for BLE-centric designs; lacks USB device stack and 5.5V-tolerant ADC inputs | Select when wireless connectivity dominates over analog sensing and USB host compatibility. |
| TI MSP432P401R | 1.25MB flash; 256KB RAM; 48MHz max; no integrated USB transceiver; AES-128 only | Lower peak performance; requires external USB PHY; less suitable for compact USB-programmable wearables | Choose for cost-sensitive industrial sensor nodes where USB is not required and BLE is handled externally. |
Compared with Nordic nRF52840 and TI MSP432P401R, the MAX32620IWGL+ uniquely combines USB 2.0 full-speed transceiver, 5.5V-tolerant ADC inputs, and sub-µW LP0 mode-making it optimal for certified medical wearables requiring direct PC connectivity, robust analog front-end integration, and multi-year battery life.
Availability
MAX32620IWGL+ is available at Aetrix Electronics and suitable for sport watches, fitness monitors, and wearable medical patches requiring stable component supply across long-lifecycle healthcare and consumer electronics programs.
Supply support for MAX32620IWGL+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a leader in precision analog, mixed-signal, and high-reliability semiconductor solutions for demanding industrial, medical, and communications applications.
The MAX32620IWGL+ belongs to the DARWIN family of ultra-low-power MCUs engineered specifically for secure, battery-operated IoT edge devices where longevity, analog integration, and cryptographic integrity are non-negotiable.
FAQ
What is the maximum operating frequency of the MAX32620IWGL+ CPU core?
The MAX32620IWGL+ features an Arm Cortex-M4 with FPU core that operates at up to 96MHz using its internal relaxation oscillator. This frequency is factory-trimmed to ±0.25% for USB compliance and supports high-efficiency signal processing in wearable applications without requiring an external crystal.
Does the MAX32620IWGL+ support USB device functionality without external components?
Yes, the MAX32620IWGL+ integrates a full-speed USB 2.0 transceiver with internal DP/DM termination resistors and pull-ups. When used with the internal 96MHz oscillator trimmed to 96.0MHz ±0.24MHz, it meets USB electrical compliance-eliminating the need for external PHY, resistors, or crystals in USB-enabled designs.
What are the key differences between LP0, LP1, and LP2 power modes in the MAX32620IWGL+?
LP0 draws 1.06µW with RTC running but all other logic powered down; LP1 consumes 2.67µW with full SRAM/flash retention and 5µs wake-up; LP2 uses 28µW/MHz with selective peripheral clock gating and dynamic voltage scaling. Each mode targets distinct use cases: LP0 for calendar-clock backup, LP1 for sensor-triggered wake-up, LP2 for background processing.
Can the MAX32620IWGL+ ADC directly interface with 5V sensors?
Yes-the AIN[1:0] inputs on the MAX32620IWGL+ are rated for -0.3V to +5.5V, allowing direct connection to 5V-output analog sensors (e.g., thermistors, potentiometers, or legacy medical transducers) without external level-shifting circuitry. AIN[3:2] support up to 3.6V, and internal reference is fixed at 1.20V for consistent 10-bit conversion.
Is hardware security implemented in the MAX32620IWGL+?
Yes, the MAX32620IWGL+ includes a dedicated hardware AES-128/-192/-256 engine for accelerated encryption/decryption, supporting secure boot, firmware authentication, and protected data storage. While the MAX32621 adds a Trust Protection Unit (TPU), the MAX32620IWGL+ provides foundational cryptographic acceleration essential for HIPAA- and GDPR-compliant wearable data handling.
MAX32620IWGL+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 81-WFBGA, WLBGA
- Series:
- DARWIN
- Packaging:
- Strip
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 96MHz
- Connectivity:
- 1-Wire, I2C, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 49
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.14V ~ 3.6V
- Data Converters:
- A/D 4x10b Sigma-Delta
- Oscillator Type:
- Internal
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MAX32620IWGL+ FAQ
1.How can I place an order for MAX32620IWGL+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX32620IWGL+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX32620IWGL+ reliable?
The price and inventory of MAX32620IWGL+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX32620IWGL+ is usually 5 days.
3.What payment methods are accepted for MAX32620IWGL+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX32620IWGL+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX32620IWGL+?
MAX32620IWGL+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX32620IWGL+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX32620IWGL+?
For technical support, including MAX32620IWGL+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX32620IWGL+ requirements.
6.How does Aetrix verify that MAX32620IWGL+ is sourced from the original manufacturer or authorized distributors?
All MAX32620IWGL+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX32620IWGL+ meets industry standards.
7.What is the process for return or replacement of MAX32620IWGL+?
All MAX32620IWGL+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX32620IWGL+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX32620IWGL+ part is unused and in its original packaging.
Return procedure for MAX32620IWGL+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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