ATXMEGA32C4-AN - 32KB Low-Power AVR MCU | Microchip
料号： ATXMEGA32C4-AN ✓ 量产中ATXMEGA32C4-AN 概述
An 8/16-bit AVR XMEGA microcontroller is an embedded-control device designed to execute firmware in a compact, low-power system while coordinating sensors, communications, timers, and digital outputs. The XMEGA family extends the AVR architecture with a more capable event system, multilevel interrupt controller, high-resolution timers, and dedicated serial-interface hardware, making it useful within the microcontroller and embedded-control semiconductor hierarchy.
Key features include 32 KB of programmable Flash with read-while-write capability, a dedicated 4 KB boot-code section, 1 KB of EEPROM, and 4 KB of SRAM. The device provides 34 general-purpose I/O lines, three USARTs, two two-wire serial interfaces, four 16-bit timer/counter modules, a 16-bit real-time counter, and a programmable four-channel event system. These resources reduce external peripheral requirements in compact industrial and consumer-control designs.
The enhanced RISC architecture executes instructions in a single clock cycle, supporting high code density and efficient real-time control. Read-while-write Flash operation allows the application code to remain active while a separate code section is programmed. The event system can route signals between timers, comparator channels, and interrupt logic, reducing CPU intervention for time-critical peripheral relationships.
Typical applications include industrial control modules, compact sensor nodes, serial-interface concentrators, motor-control peripherals, touch-input controllers, and communication equipment. The three USARTs support mixed legacy serial devices, while the two two-wire interfaces enable connection to sensors and other embedded controllers. The 1.6 V minimum operating voltage also permits integration into low-voltage, battery-managed equipment.
When designing around the ATXMEGA32C4-AN, preserve the separation between application and boot Flash sections, place decoupling capacitors close to the supply pins, and confirm peripheral multiplexing before assigning every I/O pin. Use the event system and hardware comparators for deterministic timing so the CPU can remain available for communication and system management.
This product page consolidates the manufacturer specifications, interface capabilities, family-level alternatives, and implementation guidance needed to evaluate the ATXMEGA32C4-AN across embedded-control, communications, and low-voltage design projects.
直接替换替代料： ATXMEGA32C4-AN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
ATXMEGA32A4-AN
✅ 直接替换联系询价
查看数据手册 →ATXMEGA16C4-AN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATXMEGA64C4-AN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATXMEGA16A4-AN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATXMEGA64A4-AN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATXMEGA32C4-AN 最大额定值与电气特性
| Architecture | 8/16-bit enhanced RISC AVR XMEGA |
| Flash Memory | 32 KB |
| Boot Code Section | 4 KB |
| EEPROM | 1 KB |
| SRAM | 4 KB |
| Operating Voltage | 1.6 V to 3.6 V |
| General-Purpose I/O Lines | 34 |
| Event System Channels | 4 |
| Timer/Counters | 4 units, 16-bit |
| Real-Time Counter | 1 unit, 16-bit |
| USART Interfaces | 3 |
| Two-Wire Serial Interfaces | 2 |
| 封装 | 44-pin TQFP |
| Package Dimensions | 10 mm x 10 mm |
| Maximum Operating Temperature | 105 °C |
| Flash Programming | In-system programmable with read-while-write capability |
| 安装类型 | Surface mount |
| Green Environmental Classification | Green |
ATXMEGA32C4-AN 10 mm x 10 mm 引脚配置指南
ATXMEGA32C4-AN（10 mm x 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： ATXMEGA32C4-AN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATXMEGA32C4-AN 适用于 6 应用s: Industrial Sensor and Condition Monitoring, Serial Interface Concentrator, Motor Control and PWM Interface, Touch and Capacitive Control Panel, Low-Power IoT Gateway Node, Programmable Logic and Timing Controller.
Industrial Sensor and Condition Monitoring
The ATXMEGA32C4-AN fits compact sensor-hub designs that must acquire measurements, run local filtering, and communicate through several wired interfaces. Its four 16-bit timer/counters support timing and PWM tasks, while the four-channel event system can coordinate events among timers and peripherals without relying entirely on CPU polling. The 34 general-purpose I/O lines provide capacity for sensors and discrete controls, and the 1.6 V to 3.6 V operating range accommodates low-voltage sensing systems. Firmware should use the event system for deterministic timing and keep the boot-code section separate from the 32 KB application region.
推荐
Serial Interface Concentrator
The three USARTs and two two-wire serial interfaces make the ATXMEGA32C4-AN suitable for protocol-conversion and gateway equipment. It can connect legacy serial devices on one side while managing addressable sensors or service buses on another, with 4 KB SRAM available for protocol buffers. The 32 KB Flash region provides space for firmware tables and conversion logic, and the 16-bit real-time counter supports timestamping or periodic scheduling. Designers should allocate the boot section only when bootloader update or protected application code is required, and validate every USART pin against alternate-function multiplexing.
推荐
Motor Control and PWM Interface
The ATXMEGA32C4-AN can serve as the supervisory controller for stepper, valve, or small motor-control subsystems. Four 16-bit timer/counter modules provide dedicated timing resources for PWM generation and input capture, while the event system can link timer events to interrupts and other peripherals for responsive control. The 34 I/O lines allow motor outputs, position sensors, limit switches, and status indicators to coexist with communication ports. For deterministic operation, configure timer event routing before enabling high-rate PWM and verify alternate-function assignments against the 44-pin package documentation.
推荐
Touch and Capacitive Control Panel
The ATXMEGA32C4-AN can support compact capacitive-touch or front-panel control products by combining timer resources, event handling, and multiple communications interfaces in one device. Four timer/counters allow measurement timing to be assigned independently from communication or PWM tasks, and the programmable interrupt controller helps isolate time-critical events from background firmware. Its 4 KB SRAM provides working memory for scan state and filtering, while 32 KB Flash accommodates touch algorithms and interface code. Final sensor-channel count and analog performance should be verified against the device's selected analog resources.
推荐
Low-Power IoT Gateway Node
The ATXMEGA32C4-AN is appropriate for compact gateway nodes that periodically process local sensor data and forward it over a wired link. Its 1.6 V minimum operating voltage supports low-voltage power architectures, and the low-power AVR XMEGA platform includes dedicated operating modes for reducing consumption between activity cycles. The event system can reduce processor intervention by routing peripheral events directly, while three USARTs and two two-wire interfaces provide expansion paths. Firmware should configure unused peripherals and pins for minimum leakage and use the manufacturer's clock and power-management guidance.
推荐
Programmable Logic and Timing Controller
The ATXMEGA32C4-AN can implement compact programmable timing or logic-control behavior where a small MCU is preferable to a larger configurable logic device. Four 16-bit timers support independent count and compare functions, and the four-channel event system provides a hardware route for timer relationships, comparator outputs, and interrupt requests. This architecture allows time-critical sequences to execute with less CPU intervention than polling-based designs. The 4 KB SRAM is useful for state-machine tables and timing variables, while the 32 KB Flash region provides room for configuration logic and diagnostics.
推荐
推荐产品汇总
工程参考数据： ATXMEGA32C4-AN ——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 | ATXMEGA32A4-AN | ATXMEGA16C4-AN | ATXMEGA64C4-AN | ATXMEGA16A4-AN | ATXMEGA64A4-AN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Flash Memory | 32 KB | 32 KB | 16 KB | 64 KB | 16 KB | 64 KB |
| Family | AVR XMEGA C4 | AVR XMEGA A4 | AVR XMEGA C4 | AVR XMEGA C4 | AVR XMEGA A4 | AVR XMEGA A4 |
关键差异点
- Balanced 32 KB memory configuration （对比 ATXMEGA16C4-AN)
- Lower Flash requirement than the 64 KB family option （对比 ATXMEGA64C4-AN)
- C4-family peripheral complement （对比 ATXMEGA32A4-AN)
- Large I/O count for compact embedded designs （对比 ATXMEGA32A4-AN)
设计说明
Assign analog, communication, timer, and programming functions from the manufacturer's pin-description table before routing the PCB. Several peripheral functions can be routed to multiple pins, and the valid combinations can change with package size and operating mode. Keep programming and reset access accessible, maintain the recommended decoupling arrangement, and place stable timing components near the clock circuitry.
Design the supply for the full 1.6 V to 3.6 V operating range and account for startup, sleep, and active load-current transitions. Use the manufacturer's recommended application circuit as the basis for bulk and local decoupling, and verify voltage-dependent clock limits in the electrical characteristics. Avoid placing noise-producing switch regulators directly beneath sensitive analog or communication routing when a separate quiet supply region is possible.
Do not treat a shared package as proof of complete functional equivalence. The A4 alternatives use a different peripheral complement from the C4 device, while the 16 KB variants have 50% less Flash than the target. Before replacement, compare required timer channels, analog channels, USART and two-wire interfaces, interrupt behavior, boot partition, SRAM demand, and the maximum clock frequency.
Use the event system for deterministic relationships among timers and interrupt sources rather than relying on polling loops with uncertain latency. Route high-rate or sensitive communications away from switching nodes, maintain short ground returns, and follow the recommended crystal or clock-component placement. Validate signal timing with the selected baud rate, prescaler, and peripheral clock in a hardware prototype.
合规信息
The distributor record classifies the exact MPN as green, but the accessible manufacturer and distributor excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status.