AT90CAN32-15MT - 32KB AVR CAN MCU, 15MHz | Microchip
料号： AT90CAN32-15MT ✓ 量产中AT90CAN32-15MT 概述
An 8-bit microcontroller is a programmable semiconductor containing a processor core, memory, peripherals, and I/O ports on one device. The AT90CAN32 belongs to the AVR 8-bit MCU hierarchy, which provides a compact computing platform for control logic, communication protocols, data acquisition, and embedded automation. Its CAN controller allows the device to communicate reliably over a standardized differential network without requiring a separate CAN controller.
Key features include 32KB of flash memory, 2KB of SRAM, 1KB of EEPROM, 53 general-purpose I/O lines, and 32 general-purpose working registers. The MPN suffix identifies a 15 MHz device in the automotive AT90CAN32 family. The 64-QFN package provides a compact surface-mount solution, while the exposed-pad package is suitable for automated board assembly and controlled thermal management.
The AT90CAN32 uses the AVR enhanced RISC architecture and executes most instructions within a single clock cycle. Its integrated CAN controller supports CAN 2.0A and CAN 2.0B communication, while its general-purpose I/O and memory resources allow local sensing, actuator control, protocol handling, and state-machine execution. The exact operating limits and electrical characteristics for this ordering code should be confirmed against the manufacturer datasheet before production release.
Typical applications include automotive body and comfort modules, CAN-based industrial controllers, distributed equipment nodes, diagnostic interfaces, actuator controllers, and embedded CAN gateways. The combination of CAN connectivity, 53 I/O lines, and embedded flash makes the device appropriate where a local control loop must also participate in a vehicle or industrial network.
PCB design should preserve the manufacturer-specified decoupling network, CAN transceiver interface, exposed-pad soldering pattern, and clock layout. Confirm the exact pin assignments, external component values, and electrical ratings from the AT90CAN32-15MT pin-description table before assigning tracks or selecting companion circuitry.
This product page consolidates the exact MPN specifications, pin-compatible family alternatives, CAN-focused application guidance, and practical PCB considerations. It is designed to support engineering selection, schematic review, PCB planning, and sourcing without replacing the manufacturer datasheet.
直接替换替代料： AT90CAN32-15MT ——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： AT90CAN32-15MT （相同外形与封装尺寸） ——差异在于 Maximum Clock Speed.
AT90CAN32-15MT1
✅ 直接替换📋 参考替代料（不在目录中）
AT90CAN64-16MU
✅ 直接替换联系询价
查看数据手册 →AT90CAN32-15MT 最大额定值与电气特性
| Microcontroller Type | 8-bit AVR RISC automotive microcontroller |
| Maximum Clock Speed | 15 MHz |
| Program Memory | 32KB flash |
| Data Memory | 2KB SRAM |
| EEPROM | 1KB |
| General-Purpose I/O Lines | 53 |
| General-Purpose Working Registers | 32 |
| 数据总线宽度 | 8 bit |
| CAN Controller | Integrated CAN 2.0A/CAN 2.0B controller |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 封装 | 64-QFN, 9 x 9 mm |
| 安装类型 | Surface mount |
| Architecture | AVR enhanced RISC |
| Processor Core | 8-bit AVR |
| Program Memory Type | Flash |
| Read-While-Write Capability | Supported |
| Automotive Qualification | AEC-Q100 automotive family |
AT90CAN32-15MT 64-qfn, 9 x 9 mm 引脚配置指南
AT90CAN32-15MT（64-qfn, 9 x 9 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： AT90CAN32-15MT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AT90CAN32-15MT 适用于 6 应用s: Automotive Body Control Module, CAN-Based Industrial Equipment Node, Vehicle Diagnostic Interface, Distributed Sensor and Actuator Controller, CAN Gateway and Protocol Bridge, Actuator Control Module.
Automotive Body Control Module
The AT90CAN32-15MT fits an automotive body controller because it combines a 15 MHz AVR core, 32KB flash, 1KB EEPROM, and an integrated CAN controller in a 64-QFN package. It can execute switch, lamp, lock, and sensor logic while exchanging diagnostic or body-state data through CAN. The 53 I/O lines provide substantial local connectivity, although the exact pin allocation must follow the manufacturer pin-description table. A suitable CAN transceiver, bus protection, and automotive-qualified passive network are required around the MCU. The principal design trade-off is that 32KB of flash limits application-code growth, while EEPROM retains 1KB of nonvolatile configuration data.
推荐
CAN-Based Industrial Equipment Node
The AT90CAN32-15MT is appropriate for a distributed industrial node that must run local control logic and communicate over a CAN network. Its 15 MHz processing rate supports responsive state-machine execution, while 32KB of flash stores application firmware and 2KB of SRAM supports working variables and protocol buffers. The integrated CAN controller reduces external controller count, although the physical bus still needs a transceiver and protection network. Its 53 general-purpose I/O lines can connect discrete sensors, status indicators, and actuators. Designers should reserve memory for stack use, bootloader functions, and parameter storage while confirming electrical limits in the manufacturer datasheet.
推荐
Vehicle Diagnostic Interface
The AT90CAN32-15MT can serve as the MCU in a CAN diagnostic interface because it includes both a CAN controller and sufficient GPIO for request handling, status signaling, and interface logic. The 32KB flash area permits a practical protocol state machine, while 1KB EEPROM can preserve configuration identifiers or operating counters. The 64-QFN package supports compact automotive electronics, but exposed-pad layout and copper coverage require careful thermal planning. A transceiver provides the differential bus interface, and the design must account for bus standby, dominant-state current, and fault behavior according to the selected interface components. Validate diagnostic timing and error handling against the system requirements.
推荐
Distributed Sensor and Actuator Controller
The AT90CAN32-15MT suits distributed sensing and actuation because 53 general-purpose I/O lines can support digital inputs, outputs, and peripheral signals around a central CAN node. Its 15 MHz AVR architecture allows the firmware to acquire measurements, apply control logic, and publish node status without relying on a separate communication processor. With 32KB flash, 2KB SRAM, and 1KB EEPROM, it can maintain protocol state and persistent calibration values within a constrained footprint. Designers must verify individual pin current limits, analog functions, and package-specific multiplexing in the manufacturer datasheet. The CAN transceiver and bus protection components should be selected independently for the vehicle or industrial network.
推荐
CAN Gateway and Protocol Bridge
The AT90CAN32-15MT can implement a compact CAN gateway or protocol bridge when two communication tasks can fit within a 15 MHz, 8-bit processing budget. Its integrated CAN controller handles bus frames while the AVR core manages buffering, routing, state, and diagnostics. The 2KB SRAM is the principal constraint for simultaneous protocol buffers, so designers should minimize copies and use carefully sized message structures. The 32KB flash budget also determines how much protocol conversion and management code can be retained. Pin assignment, interrupt priority, and CAN bit timing must follow the manufacturer datasheet. An external transceiver remains necessary at the physical bus interface.
推荐
Actuator Control Module
The AT90CAN32-15MT is well suited to compact actuator-control modules that must interpret commands from a CAN bus and drive discrete outputs. Its 15 MHz clock provides processing headroom for debouncing, state confirmation, fault flags, and communication tasks, while 53 I/O lines reduce the need for external I/O expansion. The device's 1KB EEPROM can retain limited calibration or configuration values, and 32KB flash is adequate for focused control firmware. Output drivers, flyback protection, and any power-stage components must be selected separately because the MCU does not directly replace them. Validate output timing, pin drive capability, and thermal conditions against the manufacturer datasheet and actuator requirements.
推荐
推荐产品汇总
工程参考数据： AT90CAN32-15MT ——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 | AT90CAN32-15MT1 | AT90CAN64-16MU |
|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-QFN |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Speed | 15 MHz | 15 MHz | 16 MHz |
| Program Memory | 32KB flash | 32KB flash | 64KB flash |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Processor Architecture | AVR 8-bit enhanced RISC | AVR 8-bit enhanced RISC | AVR 8-bit enhanced RISC |
| Integrated CAN Controller | CAN 2.0A/CAN 2.0B controller | CAN 2.0A/CAN 2.0B controller | CAN controller |
关键差异点
- Closest listed same-family drop-in option （对比 AT90CAN32-15MT1)
- More flash and clock performance for expandable designs （对比 AT90CAN64-16MU)
- Integrated networking reduces external controller requirements （对比 ATMEGA169P-15MT)
设计说明
Route the CAN RX and TX interface as a short, controlled pair between the AT90CAN32-15MT and the external transceiver. Keep the transceiver, protection components, and MCU decoupling close to their associated pins. The integrated controller handles CAN frames, but it does not replace the physical-layer transceiver. Review the manufacturer reference layout and pin-description table before finalizing track widths, guards, and component placement.
Follow the 64-QFN exposed-pad land pattern and manufacturer soldering profile rather than substituting a generic QFN footprint. The exposed pad typically requires a thermal-via array and adequate top- and bottom-layer copper for heat spreading. Verify pad dimensions, paste mask, solder-mask clearance, and via tolerances against the package drawing. Incorrect exposed-pad soldering can affect assembly yield and thermal performance.
Place the required input-bypass capacitors close to the supply and ground pins, and keep switching or high-current loads away from sensitive MCU and transceiver areas. The listed operating range is 2.7 V to 5.5 V, but the usable combination of clock rate, peripherals, and ambient temperature must be confirmed in the manufacturer datasheet. Include voltage supervision where the system requires controlled reset behavior.
Do not substitute ATMEGA169P-15MT solely because it is also described as a 15 MHz, 64-QFN AVR device; it has 16KB rather than 32KB of flash and lacks the same confirmed CAN feature set. Likewise, confirm the complete 64-QFN pin map and exposed-pad implementation before approving a PCB substitution. Memory-code compatibility and peripheral functionality are separate checks from package compatibility.
合规信息
The AT90CAN32-15MT is identified as an automotive AEC-Q100 family member. The available product information does not explicitly state the ordering code's RoHS, REACH, lead-free, halogen-free, or conflict-minerals status.