EFM32G842F64-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs
料号： EFM32G842F64-QFP64 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
EFM32G842F64-QFP64 概述
A microcontroller is a compact integrated circuit containing a processor core, memory, peripherals, and I/O. The EFM32G842 belongs to the EFM32 Gecko family and uses the ARM Cortex-M3 RISC core, placing it in the hierarchy MCU → 32-bit microcontroller → embedded processor → semiconductor. Its low-energy architecture, fast wake-up behavior, and energy-saving modes make it suitable for systems that spend substantial time idle or operate from limited power budgets.
Verified features include a 32 MHz operating speed, 64 kB Flash, 16 kB RAM, 53 digital I/O pins, and three 16-bit timers. The 1.98 V to 3.8 V supply range supports 2.5 V and 3.3 V system designs. The LCD, AES, and USB-related ecosystem description shown by distributor listings makes the device relevant to human-interface, secure accessory, and connected embedded applications, while the 64-pin package provides a substantial peripheral-routing option for mixed-signal control boards.
The Gecko platform emphasizes fast startup and low-energy execution rather than only peak processing speed. This is valuable in portable instruments, battery-powered sensors, industrial controls, and USB peripherals where the average current between activity periods can determine battery life. Firmware should therefore use the device's sleep and wake behavior deliberately rather than treating the 32 MHz CPU frequency as a continuous-power requirement.
Typical applications include energy-harvesting sensors, compact industrial controllers, USB-connected human-interface devices, secure embedded accessories, and low-power monitoring systems. The 53 digital I/O pins are useful for status indicators, buttons, relays, displays, and external interface signals, while the timers support periodic sensing, motor timing, or control-loop tasks.
PCB design should preserve short, clean return paths around the MCU and decoupling connections. Follow the manufacturer datasheet for the exact pin names, exposed pad requirements, crystal requirements, and decoupling network. Do not assume that another 64-TQFP MCU is interchangeable solely because its package matches; peripheral mapping, voltage tolerance, firmware support, and pin function must be checked before replacement.
This page consolidates verified manufacturer and distributor information, distinguishes the target from unverified alternatives, and adds procurement and design guidance that is not normally present in a basic distributor listing.
直接替换替代料： EFM32G842F64-QFP64 ——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： EFM32G842F64-QFP64 （相同外形与封装尺寸） ——差异在于 Flash Memory, Low-Power Features, Package, Product Type, Timers.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料EFM32G842F64-QFP64 最大额定值与电气特性
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| CPU Core | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 64 kB |
| RAM Memory | 16 kB |
| Digital I/O Pins | 53 |
| Timers | 3 × 16-bit |
| Supply Voltage Range | 1.98 V to 3.8 V |
| Nominal Supply Options | 2.5 V and 3.3 V |
| 封装 | 64-TQFP, 10 mm × 10 mm |
| Architecture | ARM Cortex-M3 RISC |
| Series | EFM32 Gecko |
| Low-Power Features | Energy-saving modes and fast wake-up |
| LCD Support | LCD MCU feature indicated by distributor listings |
| Security Feature | AES feature indicated by distributor listings |
| 安装类型 | Surface mount |
EFM32G842F64-QFP64 64-tqfp, 10 mm × 10 mm 引脚配置指南
EFM32G842F64-QFP64（64-tqfp, 10 mm × 10 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： EFM32G842F64-QFP64.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EFM32G842F64-QFP64 适用于 6 应用s: Battery-Powered Sensor Node, Industrial Control Panel, LCD User Interface, USB Peripheral Controller, Secure Embedded Accessory, Timing and Motor-Control Module.
Battery-Powered Sensor Node
The EFM32G842F64-QFP64 fits battery-powered sensing when the product needs local computation without a continuously running high-power processor. Its ARM Cortex-M3 core operates up to 32 MHz, while the Gecko platform's fast wake-up and energy-saving modes can reduce the time spent between measurement events. The 64 kB Flash and 16 kB RAM provide space for sensor drivers, filtering, calibration, and protocol handling. A 53-I/O device also allows status LEDs, buttons, and auxiliary sensors to share the controller. Actual battery performance depends on sensor load, radio activity, regulator efficiency, and sleep duration, so firmware scheduling and peripheral shutdown should be validated on hardware.
推荐
Industrial Control Panel
For compact industrial equipment, the EFM32G842F64-QFP64 can combine real-time control, status indication, and local user interaction in one 64-TQFP device. Its three 16-bit timers are useful for periodic sampling, debouncing, PWM-related tasks, or timing control, while 53 digital I/O pins provide generous connectivity to switches, relays, indicators, and external logic. The 1.98 V to 3.8 V range supports common 2.5 V and 3.3 V rails. Industrial products should still account for transient protection, grounding, isolation, and environmental requirements that are not specified by the supplied web data.
推荐
LCD User Interface
Distributor listings identify the EFM32G842F64-QFP64 as an LCD MCU, making it a candidate for compact display-based products such as meters, menus, and handheld controls. The Cortex-M3 core can handle UI state, input scanning, and protocol tasks at up to 32 MHz without moving simple display logic to another processor. The 16 kB RAM is useful for display buffers and application state, although the actual usable size depends on firmware and peripherals. Before schematic capture, confirm the LCD interface, panel voltage, segment or pixel requirements, and pin multiplexing in the exact manufacturer datasheet.
推荐
USB Peripheral Controller
The EFM32G842F64-QFP64 can serve as the controller in a low-power USB peripheral when the selected board design requires local USB handling alongside general embedded tasks. The 32 MHz ARM Cortex-M3 core, 64 kB Flash, and 16 kB RAM are suitable for firmware-based protocol and device-control functions, while the 53 digital I/O pins can support buttons, indicators, and companion sensors. Distributor records describe the MCU with USB-related ecosystem features, but the supplied data does not state USB speed, PHY requirements, or connector support. Those details must be verified before release to production.
推荐
Secure Embedded Accessory
Mouser identifies the EFM32G842F64-QFP64 as an AES MCU, so it may suit embedded accessories that require hardware-assisted security functions alongside control logic. The device combines a 32 MHz Cortex-M3 core, 64 kB Flash, 16 kB RAM, and a broad I/O complement in a single 64-TQFP package. That combination can reduce board size for a key, reader, or access-control peripheral that also drives indicators and communication circuitry. Security design must use the exact Silicon Labs documentation to confirm AES modes, key management, boot protection, and software requirements rather than relying on the distributor feature label alone.
推荐
Timing and Motor-Control Module
The three 16-bit timers and 53 digital I/O pins make the EFM32G842F64-QFP64 a reasonable candidate for compact timing, stepper, or small motor-control modules. Timers can organize periodic control tasks and edge-sensitive inputs, while the MCU's 32 MHz processing supports supervisory logic and communication handling. The 64-TQFP package provides more routing flexibility than a small leaded package, although actual motor interfaces, protection components, and current ratings are external to the MCU. Validate timing tolerance, noise immunity, thermal margins, and motor-driver isolation on the final PCB rather than inferring drive capability from the MCU specification.
推荐
工程参考数据： EFM32G842F64-QFP64 ——对比、设计指导和合规信息。
选型指南
关键差异点
- Gecko low-power architecture with fast wake-up and energy-saving modes （对比 Generic 32 MHz ARM Cortex-M3 MCU)
- 64 kB Flash and 16 kB RAM in a compact 64-TQFP package （对比 A smaller-memory MCU in a different package)
- LCD and AES feature positioning （对比 A basic general-purpose MCU)
设计说明
Use the verified 1.98 V to 3.8 V supply range as the design boundary, but confirm regulator accuracy, ripple, startup sequencing, and decoupling values in the Silicon Labs datasheet. Place required bypass capacitors close to the supply pins and keep the 32 MHz clock and sensitive signal returns away from switching nodes. Do not assume that a 3.3 V rail automatically satisfies every I/O or peripheral voltage requirement.
The Gecko platform emphasizes low-power operation, so firmware should disable unused peripherals and use the documented sleep and wake modes. For an estimated average-current budget, multiply each active-state current by its measured duty cycle, add wake and sensor currents, and compare the result with the battery specification. This is an engineering estimate rather than a datasheet guarantee, so validate the final duty cycle and peripheral configuration on target hardware.
Treat the EFM32G842F64-QFP64 as a 64-TQFP 10 mm × 10 mm device and follow the official land pattern and pin numbering. Keep clock lines short, provide a clean ground reference, and place decoupling and any required crystal or clock components according to the manufacturer layout guidance. Because the supplied data does not include the complete pin table, verify every net against the exact datasheet before fabrication.
Do not substitute a generic 64-TQFP microcontroller solely because the package dimensions match. Confirm pin functions, memory map, voltage limits, peripheral assignments, startup behavior, bootloader compatibility, and development-tool support. Firmware written for another ARM Cortex-M3 MCU may not run without changes even when the physical package appears compatible.
合规信息
The supplied web results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These values remain unknown rather than inferred.
