ATMEGA64M1-15AZ - 64KB AVR MCU 16MHz Automotive | Microchip
MPN： ATMEGA64M1-15AZ ✓ 啟用中ATMEGA64M1-15AZ 概覽
An 8-bit microcontroller is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. Within the power-management and embedded-control hierarchy, it sits above simple logic ICs and below 32-bit application processors, making AVR-class MCUs the workhorses of motor control, automotive body electronics, and industrial sensing nodes where cost, power, and code density matter more than raw throughput.
Key features include the advanced AVR RISC architecture executing 131 powerful instructions, most in a single clock cycle, plus read-while-write Flash so the MCU can update firmware while executing from the same array. The M1 variant integrates a dedicated motor-control Power Stage Controller (PSC) and CAN controller, differentiating it from generic ATmega64 parts.
Technical depth: the device combines 64 KB of in-system-programmable Flash organized for boot-loader operation, 2 KB of EEPROM for nonvolatile parameter storage, and 4 KB SRAM. Peripheral set includes an 10-bit ADC, PWM via the PSC, CAN 2.0B, SPI, and UART interfaces. The automotive AZ suffix carries operation to +125 C ambient with AEC-grade screening.
Typical applications include automotive motor control (DC, BLDC), LIN/CAN body-control nodes, industrial pump and fan controllers, and HVAC actuators.
Design consideration: budget Flash headroom since the 64 KB array is the family maximum; for smaller code bases, ATMEGA32M1-15AZ offers a drop-in footprint-identical alternative.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 ATMEGA64M1-15AZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATMEGA64M1-15AZ （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, SRAM, Flash Memory.
ATMEGA64M1-15MZ
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA64C1-15AZ
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA32M1-15AZ
✅ 直接替換📋 參考替代品（不在目錄中）
ATMEGA32M1-AU
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA32C1-15AZ
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA64M1-15AZ 最大額定值與電氣特性
| Core Architecture | 8-bit AVR RISC |
| Program Memory Size | 64 KB (32K x 16) ISP Flash |
| SRAM Size | 4 KB |
| EEPROM Size | 2 KB |
| Maximum Clock Speed | 16 MHz |
| Instructions | 131 instructions, most single-cycle |
| Flash Feature | Read-while-Write (ISP) |
| 封裝 / 外殼 | 32-TQFP |
| 腳位數 | 32 |
| 安裝類型 | Surface Mount |
| Oscillator Type | Internal |
| 工作溫度 | -40 C to +125 C (automotive) |
| Peripherals | PSC (Power Stage Controller), CAN, SPI, UART, ADC, PWM |
| Packaging | Tape & Reel (TR) |
| Series | ATmega64M1 (Automotive ATmega M1 family) |
| RoHS 狀態 | Green / RoHS compliant |
ATMEGA64M1-15AZ 32-tqfp 腳位配置指南
ATMEGA64M1-15AZ（32-tqfp 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATMEGA64M1-15AZ.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATMEGA64M1-15AZ 適用於 6 應用s: Automotive BLDC/DC Motor Control, Automotive Body Control / CAN Nodes, Industrial Pump and Fan Controllers, HVAC Actuator and Damper Drives, Automotive Lighting and LED Control, Sensor Acquisition and Diagnostic Nodes.
Automotive BLDC/DC Motor Control
The ATMEGA64M1-15AZ is purpose-built for automotive motor control: its integrated Power Stage Controller (PSC) generates complementary PWM pairs with programmable dead-time for driving half-bridges, while the CAN controller connects the node to the vehicle network. The AZ grade operates to +125 C, covering under-hood and pump-in-tank environments. In a typical BLDC design the PSC drives a three-phase MOSFET bridge while the 10-bit ADC samples current via a shunt; the 64 KB Flash accommodates field-oriented-control code plus commutation tables. Unlike a general-purpose MCU plus external PWM controller, the single-die M1 solution reduces BOM count and PCB area.
推薦
Automotive Body Control / CAN Nodes
In body-electronics nodes such as window lifts, seat controllers, and lighting modules, the ATMEGA64M1-15AZ combines a CAN 2.0B controller, UART (LIN-capable via software), and 27 GPIO lines in one 32-TQFP die. The 2 KB EEPROM stores calibration and configuration data across power cycles, and the internal oscillator option removes the external crystal for cost-sensitive nodes. The +125 C automotive rating covers cabin and engine-bay locations. Because 64 KB read-while-write Flash supports boot-loader updates over CAN, fleets can be re-flashed during service; the 4 KB SRAM handles multiple concurrent message buffers and state machines without external RAM.
推薦
Industrial Pump and Fan Controllers
Industrial HVAC and circulation-pump controllers benefit from the ATMEGA64M1-15AZ's combination of PSC-based PWM, ADC current sensing, and 64 KB Flash for PID and diagnostic firmware. The internal oscillator and wide temperature range simplify compact, sealed enclosures, while the 10-bit ADC reads pressure and temperature sensor chains directly. PWM frequency and dead-time are configured in the PSC without CPU loading, so control loops run deterministically. In such designs the MCU typically drives a smart gate-driver or discrete half-bridge for a 12-24 V DC motor, and a CAN or UART link reports speed, current, and fault codes to the supervisory controller for predictive maintenance.
推薦
HVAC Actuator and Damper Drives
HVAC dampers, blend doors, and valve actuators demand precise positioning, quiet drive, and nonvolatile position memory. The ATMEGA64M1-15AZ delivers PSC-complementary PWM for brushed DC or stepper drive stages, 2 KB EEPROM to persist travel limits and calibration after power loss, and ADC inputs for position feedback potentiometers or Hall sensors. The +125 C rating suits air-handler compartments, and the internal oscillator trims component count. Firmware including stall detection, soft-start ramps, and end-stop learning fits comfortably in 64 KB Flash, while CAN or LIN-over-UART integration lets the actuator join modern building-automation or vehicle climate networks without an external communication chip.
推薦
Automotive Lighting and LED Control
Adaptive lighting modules and LED drivers in vehicles need flicker-free PWM, thermal derating, and diagnostic reporting. The ATMEGA64M1-15AZ generates high-resolution PSC PWM for LED current control, samples the 10-bit ADC for current feedback and NTC temperature monitoring, and implements derating curves in firmware. Operation to +125 C permits mounting near headlamp housings, and CAN connectivity supports status reporting to the body controller. The 64 KB Flash stores multiple lighting profiles and OEM-specific communication stacks, while read-while-write boot-loader capability allows profile updates during service. A 16 MHz maximum clock and single-cycle AVR instructions ensure deterministic PWM edges without interrupt jitter.
推薦
Sensor Acquisition and Diagnostic Nodes
Distributed sensing nodes for pressure, temperature, and position benefit from the ATMEGA64M1-15AZ's 10-bit ADC with internal reference, 4 KB SRAM for filtering and logging, and 2 KB EEPROM for calibration constants. The internal oscillator and 32-TQFP footprint produce compact, low-cost designs, while CAN or UART links stream processed values to a gateway. Single-cycle AVR instruction execution lets the MCU implement IIR/FIR filtering and linearization tables in real time at 16 MHz. For aftermarket telematics and test instrumentation, 64 KB Flash accommodates protocol stacks plus data-logging routines, and the ISP/boot-loader Flash architecture permits field firmware upgrades via the communication bus.
推薦
推薦產品摘要
工程參考資料，適用於 ATMEGA64M1-15AZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATMEGA64M1-15MZ | ATMEGA64C1-15AZ | ATMEGA32M1-15AZ | ATMEGA32C1-15AZ |
|---|---|---|---|---|---|
| Package | 32-TQFP | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 2 KB |
| EEPROM | 2 KB | 2 KB | 4 KB | 1 KB | 1 KB |
| Max Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Motor Control (PSC) | Yes | Yes | Yes (variant detail differs) | Yes | Yes (variant detail differs) |
| Automotive Grade / Temp | Yes, -40 C to +125 C | Industrial grade | Yes, -40 C to +125 C | Yes, -40 C to +125 C | Yes, -40 C to +125 C |
主要差異化特點
- Full 64 KB Flash with read-while-write for boot-loader field updates (對比ATMEGA32M1-15AZ)
- Automotive +125 C screening (AZ grade) (對比ATMEGA64M1-15MZ)
- Integrated motor-control PSC with complementary PWM (對比ATMEGA644P-20AU)
設計說明
Supply the ATMEGA64M1-15AZ from a clean 5 V rail (the M1 family operates at 2.7-5.5 V for 16 MHz operation per family datasheet - verify the exact VCC/frequency derating table in the current Microchip document before finalizing a 3.3 V design, as max frequency scales with VCC). Decouple VCC and AVCC with 100 nF ceramics placed within 3 mm of each pin pair, plus 10 uF bulk near the supply entry. When the PSC drives a motor bridge, isolate the MCU ground from the power ground with a star or Kelvin connection so bridge switching currents do not corrupt ADC readings.
Keep the CAN transceiver, crystal (if used instead of the internal oscillator), and PSC output traces routed with short returns. Place the 32-TQFP so PSC complementary outputs exit on the same side as the gate-driver to minimize loop area and EMI. Route analog sensor lines away from PSC/CAN traces, and use the ADC's internal noise-reduction mode (sleep conversion) when reading small signals. Provide an ISP header (6-pin) even in production layouts so boot-loaders can be initially flashed in-circuit.
Do not assume the ATMEGA64M1-15AZ runs at 16 MHz at 3.3 V - AVR maximum frequency is VCC-dependent in the M1 family. Also note the C1 and M1 variants are not 100% peripheral-identical despite the same footprint (EEPROM size and PSC details differ), so validate firmware before substituting ATMEGA64C1-15AZ. Finally, the AZ grade is automotive-screened; using the cheaper MZ in a +125 C application risks reliability and warranty issues.
合規資訊
Mouser lists the part as 'Green' and automotive 125deg grade; MicrochipDirect provides RoHS and Conflict Minerals declarations. REACH and halogen-free status not stated in provided data.
