STM32G491MET6 - 170MHz Cortex-M4F MCU, 512KB | STMicroelectronics
料号： STM32G491MET6 ✓ 量产中STM32G491MET6 概述
A microcontroller is a semiconductor device that integrates a processor core, memory, and peripheral functions onto one package. Within the broader product hierarchy, an MCU is a type of embedded processor, while the Arm Cortex-M4F is the specific 32-bit RISC architecture used by the STM32G491 series. This combination allows engineers to consolidate control logic, communication, sensing, and timing functions into a single device rather than requiring separate discrete components.
The STM32G491MET6 is identified as an STM32G4-series device based on the Arm Cortex-M4 32-bit RISC core. Its operating frequency reaches 170 MHz, while its 512 KB Flash configuration provides substantially more program storage than small general-purpose MCUs. The 512K x 8 organization means each Flash word transfers eight bits at a time, supporting efficient access to code and constants. Additional RAM size and detailed peripheral assignments must be confirmed in the manufacturer documentation for the exact orderable device.
The STM32G4 family is positioned for demanding embedded-control applications where processing performance, control capability, and memory capacity are important. The 170 MHz Cortex-M4F core is suitable for real-time control loops, digital power conversion, industrial automation, motor control, communications equipment, and embedded sensor systems. A single MCU can manage multiple input-output operations, timing functions, and communication tasks while reducing the component count of the final electronic assembly.
The 80-lead LQFP package provides a practical route for prototype assembly, automated surface-mount production, and designs requiring generous external signal access compared with compact leadless packages. Its 12 x 12 mm body is small enough for many control boards while retaining exposed leads that simplify inspection, rework, and fixture-based electrical testing. Board layout should nevertheless follow the manufacturer's pin, power, decoupling, clock, and analog-instruction guidance.
When selecting STM32G491MET6, compare the complete STM32G491xC/xE ordering information, pin assignment, electrical limits, memory map, peripheral mix, clock tree, firmware support, and qualification requirements. The exact package pinout, RAM capacity, voltage limits, and temperature limits should be read directly from the STM32G491ME product documentation before schematic capture or PCB release.
直接替换替代料： STM32G491MET6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
STM32G491MCT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491MBT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491MAT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491MET6 最大额定值与电气特性
| Product Type | 32-bit ARM Cortex-M4F microcontroller |
| Maximum CPU Frequency | 170 MHz |
| Core Architecture | Arm Cortex-M4 32-bit RISC |
| Flash Memory | 512 KB |
| Flash Organization | 512K x 8 bits |
| 封装 | 80-lead LQFP, 12 x 12 mm |
| 安装类型 | Surface mount |
| Product Series | STM32G4 |
STM32G491MET6 80-lead lqfp, 12 x 12 mm 引脚配置指南
STM32G491MET6（80-lead lqfp, 12 x 12 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM32G491MET6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32G491MET6 适用于 6 应用s: Industrial Automation Controllers, Digital Power Conversion, Motor Control and Drives, Connected Sensor Equipment, Communication Equipment, Human-Machine Interface Equipment.
Industrial Automation Controllers
STM32G491MET6 fits industrial automation controllers that need real-time processing, substantial program storage, and numerous external connections. Its 170 MHz Arm Cortex-M4F core provides computational headroom for sequencing logic, condition monitoring, communications, and control routines, while 512 KB of Flash allows larger application code than small general-purpose MCUs. The 80-lead LQFP package exposes more signals than compact leadless options and remains suitable for automated assembly. Confirm timer, ADC, communication, and industrial temperature requirements in the manufacturer documentation before releasing production hardware.
推荐
Digital Power Conversion
The STM32G491MET6 is well suited to digital power-control loops because a 170 MHz Cortex-M4F core can execute compensation algorithms while the 512 KB Flash configuration accommodates control code, parameter tables, and fault-handling routines. Its 80-lead LQFP package can support multiple sensing, switching-control, communication, and protection functions without relying on a highly integrated power module. The exact PWM resolution, ADC characteristics, analog reference requirements, and timing channels must be verified for the selected control topology, including dead time, current sensing, and fault-response timing.
推荐
Motor Control and Drives
STM32G491MET6 can serve as the control MCU in a compact motor-drive module where deterministic computation and a large pin-count package are valuable. The 170 MHz Cortex-M4F core supports current-loop and speed-loop execution, while 512 KB of Flash provides room for control algorithms, field data, fault logs, and communication services. The 80-lead LQFP footprint offers access to multiple timers and control signals, but gate-drive level shifting, isolation, current sensing, braking, and protection remain external design responsibilities. Validate timer mappings and ADC synchronization against the final power stage.
推荐
Connected Sensor Equipment
STM32G491MET6 suits connected sensor equipment that must acquire measurements, run local filtering or compensation, and communicate results through embedded interfaces. A 170 MHz Cortex-M4F core can process sensor data without relying entirely on an external processor, and 512 KB of Flash accommodates firmware, calibration tables, and protocol stacks. The 80-lead LQFP package provides ample connections for analog inputs, digital sensors, displays, and communications. Check the exact ADC, timer, UART, SPI, and I2C assignments, along with voltage and operating-temperature limits, before selecting it for field instrumentation.
推荐
Communication Equipment
STM32G491MET6 is appropriate for protocol gateways, interface modules, and communication controllers that combine real-time processing with protocol firmware. Its 170 MHz Cortex-M4F core can manage framing, buffering, state machines, and supervisory logic, while 512 KB of Flash can hold networking stacks, configuration, and diagnostics. The 80-lead LQFP package provides additional pins for transceivers, status indicators, and control interfaces. Exact UART, SPI, I2C, USB, and CAN capabilities depend on the complete device configuration and must be confirmed from the STM32G491xC/xE documentation before schematic allocation.
推荐
Human-Machine Interface Equipment
STM32G491MET6 can support human-machine interface equipment such as control panels, laboratory instruments, and configuration consoles where a display, keypad, encoder, communications link, and embedded control logic share one platform. The 170 MHz Cortex-M4F core handles graphics or data processing, and 512 KB of Flash provides room for interface firmware and device configuration. The 80-lead LQFP package offers a practical choice for prototype production because its leads remain accessible for inspection and rework. Confirm display-interface availability, memory requirements, ESD strategy, and connector pin budgeting for each product variant.
推荐
工程参考数据： STM32G491MET6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32G491MCT6 | STM32G491MBT6 | STM32G491MAT6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 80-lead LQFP, 12 x 12 mm | 80-lead LQFP, 12 x 12 mm | 80-lead LQFP, 12 x 12 mm | 80-lead LQFP, 12 x 12 mm |
| CPU Core | Arm Cortex-M4F 32-bit RISC | Arm Cortex-M4 32-bit RISC | Arm Cortex-M4 32-bit RISC | Arm Cortex-M4 32-bit RISC |
| Maximum Frequency | 170 MHz | 170 MHz | 170 MHz | 170 MHz |
| Flash Memory | 512 KB | 256 KB, 50% lower | 128 KB, 75% lower | 64 KB, 87.5% lower |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount |
关键差异点
- Highest program-memory capacity among the listed same-package STM32G491M options （对比 STM32G491MCT6)
- Substantially larger firmware budget than the lower-density package-compatible options （对比 STM32G491MBT6)
- Broadest program-memory allocation among the compared 80-lead LQFP candidates （对比 STM32G491MAT6)
设计说明
Assign the MCU pins only after checking the exact 80-lead LQFP order-code drawing and complete pin-description table. Place all required power and decoupling capacitors at their corresponding pins using the shortest practical traces, and keep switching or high-current paths away from sensitive analog inputs. Preserve the exposed component clearance around the LQFP body, maintain the manufacturer land pattern, and provide adequate assembly clearance for the 0.5 mm pitch lead arrangement.
Design the supply network around the exact operating voltage range, regulator accuracy, transient requirements, and current limits documented for STM32G491MET6. Separate analog and digital supply paths where the device configuration supports distinct domains, then join them according to the recommended application circuit. Include local bulk capacitance, verify startup sequencing, and calculate worst-case regulator dissipation from the required output voltage, input voltage, and total board load before selecting the supply components.
Route the clock circuit, debug interface, reset network, and communication signals according to the manufacturer's reference layout. Keep the high-speed clock loop compact, provide a defined ground reference beneath the device, and avoid routing fast digital edges beneath analog inputs. For motor-control or power-conversion boards, segregate the MCU ground and sensitive measurement paths from gate-drive and switching-current paths, while following the final mixed-signal grounding strategy consistently.
Do not treat every STM32G4 member as a drop-in replacement. The ordering code can change the pin count, Flash or RAM density, temperature range, and peripheral configuration even when the family and core appear similar. Before substituting a device, compare the order codes, package drawings, pin tables, electrical limits, clock tree, memory map, peripheral assignments, startup support, and errata. A successful PCB fit alone does not establish firmware or functional compatibility.
合规信息
No order-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was identified for STM32G491MET6. Confirm the declaration and qualification status on the official STM32G491ME product page or the current manufacturer environmental documentation.
