ATXMEGA8E5-M4U - 32MHz 8KB AVR MCU | Microchip Technology
料号： ATXMEGA8E5-M4U ✓ 量产中ATXMEGA8E5-M4U 概述
An 8/16-bit microcontroller is a semiconductor that combines a programmable processor core, nonvolatile program memory, volatile working memory, and integrated peripherals on one device. The AVR enhanced RISC architecture belongs to the MCU hierarchy: microcontroller > integrated circuit > semiconductor. XMEGA E5 devices are designed for low-power, high-performance embedded control where local timing, serial communication, and mixed-signal measurement can be combined without requiring a separate processor.
The ATXMEGA8E5 combines 8 KB ISP flash with read-while-write capability, a separate 2 KB boot-code area, 1 KB SRAM, and 512 B EEPROM. Its eight-channel event system and programmable multi-level interrupt capability support deterministic responses to timing events. A 32 MHz operating limit provides higher execution bandwidth than many entry-level 8-bit MCUs while preserving the familiar AVR instruction set and development ecosystem.
The E5 family combines an 8/16-bit core with communication peripherals including I2C, SPI, UART/USART, and IrDA. An on-chip ADC is present according to the verified product listing. This integration reduces external component count in compact control nodes, particularly when the design needs several serial buses, nonvolatile data storage, and periodic analog measurement in a small board area.
Typical applications include compact industrial controllers, sensor-interface modules, building-control endpoints, communication bridges, low-power data loggers, and embedded peripherals that need mixed-signal measurement. The 1.6 V to 3.6 V operating range makes the device suitable for low-voltage embedded systems, while the small 4 x 4 mm package supports space-constrained portable and distributed-control products.
Designers should verify the exact pin functions, exposed-pad requirements, clock configuration, and decoupling recommendations in the manufacturer datasheet before layout. The verified source identifies the device as factory programmable, so production programmers must also account for Microchip's device-specific programming and configuration requirements rather than assuming a generic ISP workflow alone is sufficient.
This page consolidates the verified ATXMEGA8E5-M4U specifications, current distributor availability, package information, procurement data, and qualification limits for engineering review. It also separates confirmed drop-in alternatives from related XMEGA E5 devices whose memory configuration or package code may prevent a literal drop-in replacement.
直接替换替代料： ATXMEGA8E5-M4U ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料ATXMEGA8E5-M4U 最大额定值与电气特性
| Microcontroller Family | AVR XMEGA E5 |
| Processor Core | AVR enhanced RISC |
| 数据总线宽度 | 8/16 bit |
| 最大时钟频率 | 32 MHz |
| Program Memory Size | 8 KB |
| Program Memory Organization | 4K x 16 bit |
| Data RAM Size | 1 KB |
| EEPROM Size | 512 B |
| Boot Code Section | 2 KB |
| 工作电源电压 | 1.6 V to 3.6 V |
| 封装 | 32-UQFN (4 x 4 mm) |
| 引脚数量 | 32 pins |
| 安装类型 | Surface Mount |
| On-Chip ADC | Yes |
| Serial Interfaces | I2C, IrDA, SPI, UART/USART |
| Event System | 8 channels |
| Program Memory Features | In-system self-programmable flash with read-while-write capability |
| Programming | Factory programmable |
ATXMEGA8E5-M4U 32-uqfn (4 x 4 mm) 引脚配置指南
ATXMEGA8E5-M4U（32-uqfn (4 x 4 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： ATXMEGA8E5-M4U.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATXMEGA8E5-M4U 适用于 6 应用s: Industrial Sensor Interface, Building Automation Endpoint, Communication Protocol Bridge, Portable Data Logger, Clock and Timing Control, Compact Power-Control Module.
Industrial Sensor Interface
The ATXMEGA8E5-M4U fits compact industrial sensor nodes that need local acquisition and serial reporting without a separate host processor. Its on-chip ADC handles analog sensor inputs, while the 32 MHz core supports timing and protocol processing. The I2C and SPI interfaces can connect local sensors and actuators, and UART/USART can carry diagnostics to a higher-level controller. With an 8 KB flash budget, firmware must use compact drivers and avoid unnecessary middleware. The 1.6 V to 3.6 V range supports low-voltage systems, although input conditioning, reference accuracy, isolation, and surge protection depend on the installation environment.
推荐
Building Automation Endpoint
ATXMEGA8E5-M4U is appropriate for distributed building-control endpoints combining environmental sensing, actuator control, and wired communications. Its I2C interface can connect temperature, humidity, and occupancy sensors, while SPI can serve a local display or storage device. UART/USART provides a path to a controller or gateway, and the on-chip ADC supports mixed-signal inputs. The 1 KB SRAM is adequate for compact protocol buffering, while 512 B of EEPROM can retain limited configuration data. The small 4 x 4 mm package helps fit the endpoint into wall boxes, but the designer should verify pin multiplexing and provide local protection for externally accessible wiring.
推荐
Communication Protocol Bridge
The XMEGA E5 communications resources make ATXMEGA8E5-M4U suitable for bridging sensors or legacy equipment into a modern digital network. I2C and SPI can service local devices, UART/USART can connect a host, and IrDA can support short-range optical communication where appropriate. The 32 MHz CPU provides useful headroom for framing, checksums, and command translation without requiring a separate interface IC. Firmware size must remain within the 8 KB flash limit, so a bridge requiring buffering, encryption, or multiple protocol stacks may exceed the device's memory. Interface voltage levels, isolation, grounding, and protocol timing also require board-level validation.
推荐
Portable Data Logger
ATXMEGA8E5-M4U can serve as the controller in a compact battery-powered data logger when the application fits within 8 KB of flash, 1 KB of SRAM, and 512 B of EEPROM. The ADC supports periodic analog measurements, while I2C can connect low-power sensors and SPI can access serial storage or an external radio. Its 1.6 V minimum operating voltage permits direct operation from suitably regulated low-voltage power rails. The nonvolatile memory areas are limited, so a complete logging strategy may require external storage or a larger E5 family member. Low-power behavior, sleep-mode wake sources, data-retention requirements, and battery leakage should be evaluated from the family datasheet before deployment.
推荐
Clock and Timing Control
The ATXMEGA8E5-M4U is suited to small timing-control modules where deterministic event handling, communication, and limited data acquisition are required. The XMEGA E5 family's eight-channel event system can link timing events to internal peripherals, reducing polling overhead, while the 32 MHz core processes commands and status. I2C is useful for configuring an external clock or sensor, and UART/USART supports synchronization with larger equipment. The device is not a dedicated precision timing IC, so oscillator tolerance, calibration, jitter, and event-routing requirements must be evaluated carefully. Its 1 KB SRAM is suitable for compact state machines rather than large sample buffers.
推荐
Compact Power-Control Module
ATXMEGA8E5-M4U can supervise a compact power-control module that measures analog conditions and manages digital control outputs. Its ADC can monitor supply or load feedback, while I2C, SPI, and UART/USART allow communication with power-conversion and supervisory components. The 1.6 V to 3.6 V operating range supports low-voltage control domains, and the 4 x 4 mm UQFN package preserves board area. Because the MCU does not directly specify the target's maximum output current, switching devices, gate drivers, current sensors, and protection components remain necessary. Firmware and the 8 KB flash limit are suitable only for compact supervisory logic rather than complex digital power-control algorithms.
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推荐产品汇总
工程参考数据： ATXMEGA8E5-M4U ——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 |
|---|---|
| Brand | Microchip Technology |
| Package | 32-UQFN (4 x 4 mm) |
| Microcontroller Family | AVR XMEGA E5 |
| Processor Core | AVR enhanced RISC |
| Data Bus Width | 8/16 bit |
| Maximum Clock Frequency | 32 MHz |
| Program Memory Size | 8 KB |
| Data RAM Size | 1 KB |
| EEPROM Size | 512 B |
| Operating Supply Voltage | 1.6 V to 3.6 V |
| On-Chip ADC | Yes |
| Connectivity | I2C, IrDA, SPI, UART/USART |
| Factory Programmable | Yes |
| Price as of 2026-10-29 | $1.3019 starting price at LCSC |
关键差异点
- Compact 8E5 resource configuration （对比 ATXMEGA16E5-M4U)
- Lower flash footprint than the 32E5 （对比 ATXMEGA32E5-M4U)
- Documented factory-programmable channel （对比 Generic unprogrammed inventory)
设计说明
Place the ATXMEGA8E5-M4U close to the supporting clock, decoupling, and communication components. Keep the 32-UQFN exposed-pad return path consistent with the manufacturer's land pattern and thermal-via recommendation; an incorrect pad connection can compromise signal integrity, EMC behavior, and heat transfer. Confirm the final pin names and NC assignments against the family datasheet before routing because the verified search excerpts confirm the 32-UQFN 4 x 4 mm package but do not provide the complete numbered pin map.
Design the 1.6 V to 3.6 V supply rail so it remains inside the device's operating range across startup, load transients, temperature, and component tolerance. Add local high-frequency decoupling close to the supply and ground pins, with bulk energy storage selected from the datasheet's recommended network. Do not infer the correct capacitor values from generic MCU practice; use the manufacturer guidance and account for any ADC reference, communication-interface, and external-sensor supply requirements.
Do not treat ATXMEGA16E5-M4U or ATXMEGA32E5-M4U as automatic literal drop-ins for ATXMEGA8E5-M4U merely because all belong to the XMEGA E5 family. Their flash capacities differ from the target's 8 KB, and family membership alone does not prove identical pinout, boot configuration, or peripheral behavior. Likewise, the suffix UR normally carries ordering-code information, so a reel or tray designation should not replace package and electrical verification. Confirm programming, clock, fuse, bootloader, and PCB compatibility before substitution.
Factory-programmable availability does not by itself define the customer's programming workflow. Review the device-specific programming, security, identification, and configuration requirements in the Microchip documentation. Procurement records should distinguish the base orderable ATXMEGA8E5-M4U from any factory-programmed configuration, and incoming inspection should confirm the programmed configuration, date code, package condition, and whether the full-tray quantity is directly usable.
合规信息
The supplied verified excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals compliance for ATXMEGA8E5-M4U. No compliance status has been inferred from the manufacturer or distributor listing.
