ATMEGA32M1-15MZ - 32KB AVR MCU w/ Motor Control | Microchip
部品番号: ATMEGA32M1-15MZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.95 | $495.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.98 | $3,980.00 |
ATMEGA32M1-15MZ 概要
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 131 instructions in a single clock cycle, sitting within the broader power management and embedded control hierarchy of MCU-based motor drive systems. The ATmega M1 family (ATmega16M1/32C1/32M1/64C1/64M1) adds dedicated motor-control peripherals to the standard megaAVR core, replacing a generic MCU plus discrete gate-driver solution with a single-chip design.
Key features include 32 KB of self-programmable ISP Flash with read-while-write capability, 27 general purpose I/O lines, 32 general purpose working registers, and an internal oscillator option that eliminates the need for an external crystal in cost-sensitive designs. The integrated PSC (Power Stage Controller) generates complementary PWM outputs with dead-time insertion for 3-phase BLDC, PMSM, and ACIM motor drives.
The device also integrates peripherals common to automotive body and drive electronics: a CAN controller, 10-bit ADC, USART, SPI, and TWI (I2C) interfaces, enabling sensor feedback loops and in-vehicle network communication from the same die. The AVR core's single-cycle execution supports deterministic control-loop timing at 16 MHz.
Typical applications include automotive 3-phase motor control (pumps, fans, HVAC actuators), industrial motor drives, and power conversion systems where CAN connectivity and integrated PWM hardware reduce bill-of-materials count.
A key design consideration: the QFN exposed pad is the primary ground and thermal path, so it must be soldered to a grounded copper pour for reliable operation at full load.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: ATMEGA32M1-15MZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATMEGA32M1-15MZ （同一形状・フットプリント） — 相違点: EEPROM, SRAM, ADC, Package / Case, Program Memory Size.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA32M1-15AD
✅ ドロップイン✓ 在庫あり
$1.58 / 個
データシートを見る →ATMEGA32M1-15AZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATMEGA16M1-15MZ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.58 / 個
データシートを見る →ATMEGA64M1-15MZ
✅ ドロップイン✓ 在庫あり
$3.12 / 個
データシートを見る →ATMEGA32M1-15MZ 最大定格＆電気的特性
| Core Architecture | 8-bit AVR RISC |
| Program Memory Size | 32 KB (16K x 16) ISP Flash |
| EEPROM Size | 1 KB |
| SRAM Size | 2 KB |
| Maximum Clock Speed | 16 MHz |
| Number of I/O | 27 general purpose I/O lines |
| Instructions | 131 instructions, most single-cycle |
| Oscillator Type | Internal |
| Motor Control Peripheral | Integrated 3-phase motor power stage (PSC) |
| パッケージ / ケース | 32-QFN with exposed pad |
| 電源電圧 | 3.3 V / 5 V (automotive range) |
| Communication Interfaces | CAN, USART, SPI, TWI (I2C) |
| Packaging | Tape & Reel (TR) |
| 実装タイプ | Surface Mount |
| Automotive Qualification | Automotive grade (per Microchip product page) |
ATMEGA32M1-15MZ 32-qfn with exposed pad ピン配置ガイド
ATMEGA32M1-15MZ (32-qfn with exposed pad パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATMEGA32M1-15MZ.
詳細は データシート をご参照ください。
主な用途
ATMEGA32M1-15MZ の用途: 6 件s: Automotive 3-Phase Motor Control, Industrial Motor Drives and Pumps, DC-DC and Power Conversion Control, Automotive Body Electronics Modules, Robotics and Mechatronic Actuators, HVAC Blower and Fan Control.
Automotive 3-Phase Motor Control
The ATMEGA32M1-15MZ fits automotive 3-phase motor nodes such as pumps, fans, HVAC blowers, and throttle actuators because its integrated PSC (Power Stage Controller) generates complementary PWM signals with programmable dead-time insertion, directly driving an external 3-phase gate-driver stage without a separate motor-control IC. The 16 MHz AVR core executes six-step or sensorless FOC control loops deterministically, while the 32 KB ISP Flash with read-while-write supports field firmware updates over the in-vehicle network. The on-chip CAN controller connects the node to the vehicle body bus, and the internal oscillator reduces component count in cost-sensitive high-volume modules. The automotive 3.3 V/5 V supply range and QFN exposed-pad thermal design target the harsh under-hood and cabin actuator environment typical of OEM motor modules.
おすすめ
Industrial Motor Drives and Pumps
In industrial 3-phase drives for conveyors, small pumps, and fans, the ATMEGA32M1-15MZ consolidates PWM generation, current-feedback processing, and supervisory logic into a single 32-pin QFN device. The PSC peripheral's complementary outputs with dead-time control protect the external MOSFET bridge from shoot-through, while the on-chip ADC (described in the family datasheet as part of the motor feedback path) samples phase currents for closed-loop speed and torque regulation. The 32 KB ISP Flash accommodates ramp tables, protection state machines, and communication stacks, and the USART/SPI/TWI interfaces link the MCU to HMI panels or industrial fieldbus gateways. Using a single MCU instead of a generic microcontroller plus discrete PWM logic shortens development and reduces BOM cost, which matters in cost-driven industrial equipment.
おすすめ
DC-DC and Power Conversion Control
The ATMEGA32M1-15MZ can serve as the digital controller for DC-DC converters, battery chargers, and small power-conversion stages, exploiting the same PSC peripheral that drives motors to produce precisely timed complementary PWM with dead-time for half-bridge and synchronous topologies. The 2 KB SRAM and 32 KB Flash hold compensator coefficients, state machines, and logging code, while the 16 MHz single-cycle AVR core keeps control-loop latency low and deterministic. The 10-bit-class ADC feedback path (per the family datasheet) monitors output voltage and current for regulation and fault shutdown. The CAN controller is valuable in automotive and telecom power shelves where the converter must report status to a supervisory bus. Layout-wise, keeping the exposed pad well grounded minimizes ground bounce between the power stage and the MCU's analog references.
おすすめ
Automotive Body Electronics Modules
Beyond motor drives, the ATMEGA32M1-15MZ suits automotive body modules such as window lifters, seat adjusters, and wiper systems, which combine small DC motor control with CAN networking. The 27 general purpose I/O lines handle limit switches, Hall sensors, and lamp or relay outputs, while the integrated PSC drives the motor H-bridge with hardware dead-time. The CAN controller supports OEM network diagnostics and UDS-style flashing over the 32 KB ISP Flash, whose read-while-write capability lets firmware update itself without halting motor-control interrupts. The internal oscillator eliminates crystal cost across the fleet of low-cost modules, and the automotive 3.3 V/5 V operating range tolerates load-dump-filtered supply rails. Its QFN package keeps module PCBs compact for integration into actuator housings.
おすすめ
Robotics and Mechatronic Actuators
Robotics subsystems such as grippers, joint actuators, and mobile-robot drive units benefit from the ATMEGA32M1-15MZ's combination of a real-time motor PWM engine and a general 8-bit core. The PSC generates 3-phase or half-bridge PWM for BLDC and brushed-DC stages, while the 32 general purpose working registers and single-cycle ALU execute PID position loops at kHz rates without floating-point hardware. SPI and TWI interfaces connect encoders, IMUs, and host controllers, and the USART provides a simple telemetry link. The 16 MHz clock and internal oscillator allow fast bring-up on custom actuator boards, and the 32 KB Flash leaves headroom for trajectory interpolation code. The exposed-pad QFN-32 dissipates controller heat effectively inside sealed actuator housings where airflow is absent.
おすすめ
HVAC Blower and Fan Control
HVAC blowers, condenser fans, and pump modules in vehicles and buildings are classic applications for the ATMEGA32M1-15MZ, which generates the 3-phase commutation needed for BLDC blower motors through its integrated PSC with dead-time insertion. The 16 MHz core runs sensorless back-EMF commutation and speed-ramp algorithms from the 32 KB Flash, and the on-chip ADC path samples DC-link current for overload protection, reducing external analog components. In automotive HVAC, the CAN controller receives zone-demand commands over the body bus and reports fault status; in building ventilation, the USART or TWI interfaces connect to room controllers. The internal oscillator supports cost-optimized designs, while the automotive temperature grade and exposed-pad QFN package ensure reliability in hot plenum environments with minimal airflow over the controller itself.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATMEGA32M1-15MZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATMEGA32M1-15AD | ATMEGA32M1-15AZ | ATMEGA16M1-15MZ | ATMEGA64M1-15MZ |
|---|---|---|---|---|---|
| Package | 32-QFN (exposed pad) | 32-QFN (exposed pad) - same family | 32-TQFP - different footprint, verify land pattern | 32-QFN (exposed pad) - same | 32-QFN (exposed pad) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB ISP Flash | 32 KB | 32 KB | 16 KB | 64 KB |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Motor Power Stage (PSC) | Yes, 3-phase | Yes, 3-phase | Yes, 3-phase | Yes, 3-phase | Yes, 3-phase |
| CAN Controller | Yes | Yes | Yes | Yes | Yes |
主な差別化要因
- Integrated 3-phase motor power stage controller （vs ATMEGA328P-AUR)
- On-chip CAN controller for automotive networks （vs ATMEGA32M1-15AZ)
- Balanced memory point in the M1 family （vs ATMEGA16M1-15MZ)
- Cost-optimized vs 64 KB sibling （vs ATMEGA64M1-15MZ)
設計ノート
The exposed pad on the bottom of the 32-QFN package is the main ground and thermal connection of the ATMEGA32M1-15MZ. Design the land pattern with a grounded copper pour under the pad and an array of thermal vias (typically 4-9 vias of ~0.3 mm) stitched to the internal ground plane. Incomplete reflow of the exposed pad is the most common field failure for QFN MCUs and manifests as ADC ground-reference errors and sporadic resets under motor-load transients. Confirm reflow profile with your assembler against Microchip's QFN packaging guidelines.
When driving a 3-phase bridge from the PSC outputs, always enable hardware dead-time insertion sized for your gate driver and MOSFET switching times rather than relying on software delays. Add bulk capacitance (e.g., 47-100 uF) close to the external inverter DC link and a 0.1 uF decoupling capacitor directly at each VCC pin of the MCU. Route phase-current sense lines differentially back to the ADC and keep them away from the PSC PWM traces to avoid switching noise corrupting the feedback loop.
The part number suffix encodes package and temperature: -MZ denotes the QFN package with exposed pad, while -AZ denotes TQFP - they are NOT footprint-identical despite being functional equivalents. Also, the 15 speed grade corresponds to the 16 MHz maximum clock; do not exceed this rating. When using the internal oscillator, verify CAN bit-timing tolerance requirements, since many designers add an external crystal for reliable CAN at higher bit rates. Confirm firmware size against 32 KB Flash before switching to ATMEGA16M1-15MZ.
コンプライアンス情報
Verified web data describes the part as automotive grade (3.3V/5V automotive per FindIC listing) but does not state explicit RoHS/REACH/AEC-Q100 certificates. The related ATMEGA32M1-15MD variant is listed by Abacus Technologies as EU RoHS Compliant and REACH Compliant. Confirm certificates on the official Microchip product page before production release.
