STM32G491CEU6 - 170MHz Cortex-M4 MCU | STMicroelectronics
料号： STM32G491CEU6 ✓ 量产中STM32G491CEU6 概述
A microcontroller is a programmable semiconductor that combines a processor core, memory, peripherals, and interface circuitry on one integrated circuit. The STM32G491 belongs to the STM32G4 system-on-chip family, where the Arm Cortex-M4 core provides a 32-bit RISC architecture with floating-point and digital signal processing instructions. Within the embedded hierarchy, it serves as a general-purpose microcontroller and system-on-chip rather than a discrete processor or analog-only controller.
The STM32G491CEU6 provides 512 KB of Flash for firmware and 112 KB of SRAM for working memory. Its 170 MHz Cortex-M4F core includes a floating-point unit, while the on-chip math accelerator accelerates suitable mathematical operations. The product family is characterized by rich analog peripherals, allowing a design to combine control, sensing, signal conversion, and communication functions without relying on a separate analog subsystem for every channel.
The 48-pin UFQFPN package supports integration into compact control boards while exposing the device's mixed-signal and digital capabilities. The manufacturer identifies 1.8 V, 2.5 V, and 3.3 V supply options for this ordering configuration. A 7 mm by 7 mm land pattern makes the MCU suitable for industrial and embedded products where component density is important but adequate pin access and thermal performance remain design priorities.
Typical uses include industrial motor and power-control systems, sensor acquisition and condition monitoring, high-resolution analog measurement, communications equipment, and compact consumer or medical control products. The Cortex-M4F architecture is particularly useful when algorithms require floating-point or DSP performance beyond that provided by entry-level Cortex-M0 or Cortex-M3 devices.
Designers should preserve the manufacturer's pin, power, decoupling, clock, and exposed-pad recommendations, and should verify the thermal path before operating at high ambient temperatures. Firmware, peripheral assignments, and pin multiplexing should also be checked against the device's reference manual and errata before production release.
直接替换替代料： STM32G491CEU6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32G491CEU6 （相同外形与封装尺寸） ——差异在于 Math Accelerator, Product Type.
STM32G491CEU7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491CEU8
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491CEU3
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G491CEU6 最大额定值与电气特性
| Product Type | 32-bit ARM Cortex-M4F microcontroller |
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions |
| Maximum CPU Frequency | 170 MHz |
| Maximum Performance | 213 DMIPS |
| Program Memory | 512 KB Flash (512K x 8) |
| SRAM | 112 KB |
| Math Accelerator | On-chip math accelerator |
| Architecture | 32-bit RISC |
| Supply Voltage Options | 1.8 V, 2.5 V, or 3.3 V |
| 封装 | 48-pin UFQFPN |
| Package Body Size | 7 mm x 7 mm |
| 引脚数量 | 48 pins |
| Analog Resources | Rich analog peripheral set |
| 安装类型 | Surface mount |
STM32G491CEU6 7 mm x 7 mm 引脚配置指南
STM32G491CEU6（7 mm x 7 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： STM32G491CEU6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32G491CEU6 适用于 6 应用s: Industrial Motor Control, Precision Sensor Acquisition, Power Conversion Control, Communications Equipment, Medical and Diagnostic Control, Consumer and IoT Control.
Industrial Motor Control
The STM32G491CEU6 fits compact motor-control systems that require deterministic real-time computation together with analog feedback. Its 170 MHz Cortex-M4F core provides up to 213 DMIPS, while the FPU and DSP instructions accelerate current-loop and signal-processing calculations. The 512 KB Flash supports control firmware, parameter storage, and diagnostics, and the 112 KB SRAM provides working space for sampled signals. A 48-pin UFQFPN with rich analog resources can reduce board area around the controller. The principal design consideration is separating noisy switching stages from sensitive analog paths and using the manufacturer reference layout for decoupling, grounding, and the exposed pad.
推荐
Precision Sensor Acquisition
The STM32G491CEU6 is appropriate for sensor-acquisition equipment that combines analog measurement with local control. Its rich analog resources support a design that concentrates measurement channels near a Cortex-M4F processor, while the math accelerator and 213 DMIPS performance improve filtering and compensation throughput. The 512 KB Flash is suitable for calibration tables, configuration data, and firmware, and 112 KB of SRAM can hold multiple sample buffers. A 7 mm by 7 mm UFQFPN package also supports compact instrumentation. Engineers should establish the input bandwidth, reference stability, and sampling strategy early because those requirements determine decoupling, layout isolation, and firmware filtering architecture.
推荐
Power Conversion Control
The STM32G491CEU6 can serve as the digital controller in a compact power-conversion system requiring fast computation and integrated analog measurement. Its 170 MHz Cortex-M4F core supports real-time control algorithms, and the hardware FPU reduces the computational burden of current and voltage calculations. The on-chip math accelerator is valuable for repetitive numerical operations, while 512 KB of Flash and 112 KB of SRAM support control code, compensation parameters, and telemetry buffers. The 48-pin UFQFPN preserves a small footprint. Design work must still account for switching-node isolation, gate-driver timing, fault-response paths, and the exposed-pad thermal connection to keep control behavior and junction temperature within the intended operating envelope.
推荐
Communications Equipment
The STM32G491CEU6 is well suited to compact communications equipment that must combine protocol handling, analog monitoring, and real-time control. At 170 MHz and up to 213 DMIPS, the Cortex-M4F core can process packets, manage buffers, and execute DSP-based filtering without moving every task to an external processor. Its 512 KB Flash accommodates networking code, configuration, and secure firmware, while 112 KB of SRAM supports active communication buffers. The rich analog feature set can assist with signal monitoring and line-interface supervision. The complete interface implementation should be checked against the selected transceiver because protocol timing, impedance, isolation, and connector requirements remain system-level constraints.
推荐
Medical and Diagnostic Control
The STM32G491CEU6 can support compact diagnostic or medical-device control modules that require deterministic processing and mixed-signal capability. The 170 MHz Cortex-M4F core handles control loops and finite-state logic, while the floating-point unit and math accelerator assist with sensor compensation and numerical processing. With 512 KB of Flash, 112 KB of SRAM, and rich analog resources, a design can place sensing and control functions in one 48-pin UFQFPN package. For medical use, the MCU alone does not establish regulatory compliance; developers must also apply risk management, electrical-safety requirements, software lifecycle controls, and validation appropriate to the intended classification and use of the finished product.
推荐
Consumer and IoT Control
The STM32G491CEU6 targets compact IoT and consumer-control products where local processing, analog sensing, and efficient integration matter. Its 170 MHz Cortex-M4F performance permits responsive state-machine control and edge processing, while 512 KB of Flash and 112 KB of SRAM fit moderate application firmware and working data. The 48-pin UFQFPN reduces occupied board area compared with many leaded packages, and the 1.8 V, 2.5 V, and 3.3 V supply options support multiple system architectures. Low-power behavior, wake sources, wireless-interface requirements, and production-test access must be evaluated in the complete design rather than inferred from the maximum CPU frequency.
推荐
推荐产品汇总
工程参考数据： STM32G491CEU6 ——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 | STM32G491CEU7 | STM32G491CEU8 | STM32G491CEU3 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 48-pin UFQFPN (7 mm x 7 mm) | 48-pin UFQFPN (7 mm x 7 mm) | 48-pin UFQFPN (7 mm x 7 mm) | 48-pin UFQFPN (7 mm x 7 mm) |
| CPU Core | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F |
| Maximum CPU Frequency | 170 MHz | 170 MHz | 170 MHz | 170 MHz |
| Maximum Performance | 213 DMIPS | 213 DMIPS | 213 DMIPS | 213 DMIPS |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 112 KB | 112 KB | 112 KB | 112 KB |
| Supply Voltage Options | 1.8 V, 2.5 V, or 3.3 V | 1.8 V, 2.5 V, or 3.3 V | 1.8 V, 2.5 V, or 3.3 V | 1.8 V, 2.5 V, or 3.3 V |
| Temperature-Grade Suffix | 6 | 7 | 8 | 3 |
关键差异点
- Higher real-time processing capacity within the STM32G4 family （对比 STM32G491CEU7)
- Broader temperature-grade options without changing the PCB footprint （对比 STM32G491CEU8)
- Same package, memory, and core with multiple qualification-oriented orderings （对比 STM32G491CEU3)
设计说明
Use the manufacturer pin-description table and reference layout when defining all 48 UFQFPN lands, thermal-pad connections, and decoupling. Place the required input and bulk capacitors at the pins identified by STMicroelectronics, and route sensitive analog inputs away from switching nodes and high-current return paths. The exposed pad is part of the package footprint and should be connected according to the land-pattern guidance rather than treated as an optional mechanical feature.
Estimated thermal design requirement: calculate junction temperature from package power dissipation using the actual ambient temperature and the board-specific thermal resistance. The calculation must include processor, analog, and I/O contribution because the 170 MHz operating point is not the only source of heat. Keep the exposed-pad connection continuous, provide adequate ground-plane area, and verify the assembled board at maximum ambient temperature before declaring the thermal design complete.
Partition the PCB into digital, analog, clock, and high-current power-processing regions. Keep analog references and sensor inputs away from switching and motor-drive paths, use short ground returns for the analog subsystem, and follow the manufacturer's clock-placement guidance to minimize coupling into sensitive measurements. PCB cutouts or keepouts should be applied only where specified by the package and assembly documentation, particularly around the exposed thermal pad.
Do not infer that identical package orderings are interchangeable solely from the UFQFPN footprint. Confirm the core, memory map, peripheral configuration, temperature grade, pin multiplexing, and firmware support before changing the ordering suffix. Also verify the exact operating voltage, absolute maximum ratings, clock configuration, and startup sequence against the manufacturer documentation before applying power or programming the production firmware.
合规信息
The product page and ordering information do not state the requested compliance attributes. AEC-Q100 is not applicable to the standard industrial STM32G491CEU6 ordering unless a separate automotive-qualified ordering is selected.