STM32N657ZGT6 - 600MHz Cortex-M55 MCU with 4MB Flash | STMicroelectronics
MPN: STM32N657ZGT6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
STM32N657ZGT6 Overview
What is a microcontroller? A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory (flash for program storage, SRAM for data), and programmable input/output peripherals on a single chip. MCUs are the brains of countless devices, from automotive engine control units to smart home sensors. In the system hierarchy, the STM32N657ZGT6 sits at the application processor level, above simple 8-bit MCUs but below full application processors like those in smartphones, offering a balance of performance, power efficiency, and real-time responsiveness.
Key features of the STM32N657ZGT6 include the Arm Cortex-M55 core with Arm Helium technology for DSP and ML acceleration, a rich set of communication interfaces (including Ethernet, USB, CAN FD, and multiple SPI/I2C/UART), advanced security features (TrustZone, cryptographic accelerators), and a comprehensive set of timers and analog peripherals. The device operates from 1.71V to 3.6V supply, with a temperature range of -40°C to +125°C, making it suitable for industrial and automotive environments.
Technically, the STM32N657ZGT6 leverages the Armv8.1-M architecture, which introduces features like TrustZone for secure code execution and Helium vector extensions for signal processing. The 600 MHz clock, combined with a 4 MB flash and 3.2 MB SRAM, allows for sophisticated applications such as real-time audio processing, motor control with high-resolution PWM, and edge AI inference. The device also includes a hardware cryptographic module supporting AES, RSA, and ECC, ensuring secure communication.
Typical applications include industrial automation (PLC, robotics), smart energy (smart meters, grid monitoring), advanced motor control (servo drives, drones), and edge AI (anomaly detection, predictive maintenance). The high-speed processing and extensive connectivity make it ideal for gateway devices that aggregate sensor data and communicate over Ethernet or wireless protocols.
When designing with this MCU, pay attention to power supply decoupling: place 100nF capacitors close to each VDD pin and a bulk capacitor (e.g., 4.7uF) at the power entry. Also, ensure proper grounding for the exposed pad (EP) to enhance thermal performance. The device supports multiple boot modes, so configure the BOOT pins correctly for your application.
Drop-in alternatives for STM32N657ZGT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM32N657ZGT6Q
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32N657ZIT6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32N657ZGT6
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →STM32H757ZIT6
⚡ Same Package ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32N657ZGT6 Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M55 |
| Maximum Clock Speed | 600 MHz |
| Flash Memory | 4 MB |
| SRAM | 3.2 MB |
| Package | LQFP144 (20x20 mm) |
| Supply Voltage | 1.71V to 3.6V |
| Operating Temperature | -40°C to +125°C |
| GPIO Pins | 114 |
| Communication Interfaces | Ethernet, USB, CAN FD, SPI, I2C, UART |
| DSP Capability | Arm Helium (MVE) |
| Security | TrustZone, AES, RSA, ECC |
| Timers | Advanced-control, general-purpose, basic |
| ADC | 12-bit, multiple channels |
| DAC | 12-bit |
| RoHS | Compliant |
STM32N657ZGT6 Pin Configuration
| Pin 1 | VDD — Power supply |
| Pin 2 | VSS — Ground |
| Pin 3 | PA0 — GPIO/ADC |
| Pin 4 | PA1 — GPIO/ADC |
| Pin 5 | PA2 — GPIO/USART |
| Pin 6 | PA3 — GPIO/USART |
| Pin 7 | PA4 — GPIO/SPI |
| Pin 8 | PA5 — GPIO/SPI |
| Pin 9 | PA6 — GPIO/TIM |
| Pin 10 | PA7 — GPIO/TIM |
| Pin 11 | PA8 — GPIO/USB |
| Pin 12 | PA9 — GPIO/USB |
Typical Applications
STM32N657ZGT6 is suitable for 6 applications: Industrial Automation, Smart Energy, Advanced Motor Control, Edge AI, Smart Home Gateway, Medical Devices.
Industrial Automation
The STM32N657ZGT6 is ideal for PLCs and robotics due to its 600 MHz Cortex-M55 core, which can handle complex control algorithms and real-time communication. Its extensive connectivity (Ethernet, CAN FD) allows seamless integration into industrial networks. The high-speed timers and ADC enable precise motor control and sensor acquisition. With TrustZone security, it protects intellectual property and ensures safe operation in critical infrastructure.
Recommended
Smart Energy
For smart meters and grid monitoring, the STM32N657ZGT6 provides high processing power for real-time energy measurement and communication. Its multiple ADCs and DACs interface with current/voltage sensors, while Ethernet and wireless modules enable data aggregation. The low-power modes and wide voltage range support battery-backed operation. Security features ensure tamper resistance and secure data transmission.
Recommended
Advanced Motor Control
The STM32N657ZGT6 excels in servo drives and drones, where high-resolution PWM and fast control loops are essential. The 600 MHz core executes FOC algorithms with ease, while the advanced timers generate precise PWM signals. The ADC samples phase currents at high speed, and the Helium DSP accelerates vector math. Its robust temperature range and automotive-grade variant make it suitable for harsh environments.
Recommended
Edge AI
With the Cortex-M55 and Helium, the STM32N657ZGT6 can run lightweight neural networks for anomaly detection and predictive maintenance. Its 4 MB flash stores models, and 3.2 MB SRAM handles inference buffers. The device supports TensorFlow Lite Micro, enabling on-device AI without cloud latency. Security features protect model IP, and the high-speed interfaces stream sensor data efficiently.
Recommended
Smart Home Gateway
The STM32N657ZGT6 serves as a central hub for smart home devices, aggregating data from Zigbee, Z-Wave, and Wi-Fi modules. Its multiple UARTs and SPIs connect to various radios, while Ethernet provides backbone connectivity. The high processing power enables local automation rules and voice processing. Security features ensure secure device onboarding and communication.
Recommended
Medical Devices
In medical monitoring equipment, the STM32N657ZGT6 offers high-speed data acquisition and processing for signals like ECG and EEG. Its low-power modes extend battery life in portable devices. The security features protect patient data, and the wide temperature range ensures reliability. The device's DSP capabilities filter noise and extract features in real-time.
Recommended
Recommended Products Summary
Engineering reference data for STM32N657ZGT6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32N657ZGT6Q | STM32N657ZIT6 | STM32H757ZIT6 | i.MX RT1176 |
|---|---|---|---|---|---|
| Package | LQFP144 | LQFP144 | LQFP144 | LQFP144 | BGA |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | NXP Semiconductors |
| Core | Cortex-M55 | Cortex-M55 | Cortex-M55 | Cortex-M7 | Cortex-M7 |
| Max Clock Speed | 600 MHz | 600 MHz | 600 MHz | 480 MHz | 1 GHz |
| Flash Memory | 4 MB | 4 MB | 2 MB | 2 MB | 2 MB |
| SRAM | 3.2 MB | 3.2 MB | 1.6 MB | 1 MB | 2 MB |
| Automotive Grade | No | Yes (AEC-Q100) | No | No | No |
| Pin Compatibility | Reference | Pin-to-pin compatible | Pin-to-pin compatible | Likely different pinout | Not compatible |
Key Differentiators
- Higher clock speed and Helium DSP (vs STM32H757ZIT6)
- Larger memory (vs STM32N657ZIT6)
- Automotive-grade option (vs STM32N657ZGT6Q)
Design Notes
Ensure proper decoupling: place a 100nF ceramic capacitor close to each VDD pin and a 4.7uF bulk capacitor at the power entry. The STM32N657ZGT6 operates from 1.71V to 3.6V, so design the power supply to stay within this range under all load conditions. Use a low-dropout regulator if the input voltage is close to the minimum.
The LQFP144 package has a thermal resistance (theta_JA) of approximately 40°C/W. At 600 MHz, the power dissipation can be significant, especially with heavy peripheral usage. Ensure adequate airflow or a heatsink if the ambient temperature is high. The exposed pad (EP) should be soldered to a large copper area on the PCB to improve heat dissipation.
For high-speed signals like Ethernet and USB, maintain controlled impedance and keep traces short. Use ground planes to minimize noise. The STM32N657ZGT6 has many GPIOs, so route carefully to avoid crosstalk. Follow ST's layout guidelines in the application note AN4666 for best practices.
Compliance Information
RoHS compliant per ST product page. Not AEC-Q100 qualified; choose STM32N657ZGT6Q for automotive.
