ATMEGA64M1-15MD - 64KB AVR MCU, 150C Auto, QFN-32 | Microchip
MPN: ATMEGA64M1-15MD β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.25 | $62.50 |
| 100 | $5.6 | $560.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.65 | $4,650.00 |
ATMEGA64M1-15MD Overview
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, positioning this device within the MCU hierarchy: microcontroller -> embedded processor -> integrated circuit. The M1 family branch of the AVR ATmega line adds automotive-qualified peripherals targeted at motor control and in-vehicle networking.
Key features include 64 KB of self-programmable ISP Flash with read-while-write capability, a dedicated Programmable Serial Controller (PSC) for advanced motor-control PWM generation, a CAN controller for in-vehicle networking, and an operating supply range of 4.5 V to 5.5 V. The -15 suffix denotes the 16 MHz speed grade, while the MD suffix identifies the automotive-grade 150 C temperature specification with green/RoHS packaging.
The AVR core uses 32 general-purpose working registers directly connected to the ALU, allowing one-cycle instruction execution that delivers up to 16 MIPS at 16 MHz. Read-while-write Flash permits firmware updates in the field without stalling execution, an important property for automotive service and OTA-style update strategies.
Typical applications include DC and BLDC motor control (using the PSC and ADC), CAN-based automotive body and powertrain nodes, HVAC blowers, fuel pumps, and industrial motor drives. The 150 C rating also suits underhood and on-engine mounting positions.
Design consideration: this is a 5 V-only part; level shifting is required when interfacing 3.3 V peripherals, and the QFN-32 exposed pad should be soldered to a ground pour for thermal and signal-integrity reasons.
This page synthesizes distributor inventory data, same-family drop-in variants, and practical design notes not consolidated in the manufacturer datasheet. Pricing shown is estimated and must be confirmed by RFQ as of 2026-09-18.
Drop-in alternatives for ATMEGA64M1-15MD β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA64M1-15MD (same form factor and footprint) β differing in EEPROM, Package, SRAM, Supply Voltage.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA64M1-15MU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA64M1-15MZ
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$3.12 / Unit
View Datasheet βATMEGA32M1-15MU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA16M1-15MU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA64C1-15MU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA32C1-15MU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA64M1-15MD Maximum Ratings & Electrical Characteristics
| Core | 8-bit AVR RISC |
| Flash Memory | 64 KB (32K x 16) ISP, read-while-write |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Maximum Clock Frequency | 16 MHz |
| Supply Voltage | 4.5 V to 5.5 V |
| General Purpose I/O Lines | 27 |
| Working Registers | 32 general purpose |
| Package | 32-VQFN Exposed Pad (7x7 mm) |
| Mounting Type | Surface Mount |
| Temperature Grade | Automotive 150 C specification (MD suffix) |
| Qualification | AEC-Q100 (automotive family ATmega16M1/32M1/64M1/64C1) |
| Key Peripherals | PSC (motor control PWM), CAN controller, ADC, SPI, UART |
| Programming | In-System Programmable (ISP) |
| Data Bus Width | 8 bit |
| Lifecycle Stage | ACTIVE |
| RoHS Status | Green (per Mouser listing) |
ATMEGA64M1-15MD 32-vqfn exposed pad (7x7 mm) Pin Configuration Guide
Pin configuration for ATMEGA64M1-15MD (32-vqfn exposed pad (7x7 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMEGA64M1-15MD.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA64M1-15MD is suitable for 6 applications: BLDC Motor Control, Automotive CAN Body Node, HVAC Blower Control, Fuel Pump Driver Module, Industrial Motor Drives and Actuators, Electric Power Steering Assist Pumps.
BLDC Motor Control
The ATMEGA64M1-15MD fits BLDC motor control because its PSC (Programmable Serial Controller) generates complementary PWM outputs with hardware dead-time insertion and fault shutdown, while the integrated ADC samples shunt-resistor current for commutation control. Running at 16 MHz on a 4.5-5.5 V supply, the single-cycle AVR core executes field-oriented or six-step control loops in real time. Place the MCU between the gate-driver inputs and the CAN bus: the PSC drives a 3-phase inverter while the CAN controller reports speed, temperature, and fault status. The 150 C automotive grade allows mounting near the motor, reducing harness length; verify self-heating by estimating Pd = Vcc x Icc plus I/O driver losses.
Recommended
Automotive CAN Body Node
For body-electronics nodes such as window lifts, seat adjusters, and wiper modules, the ATMEGA64M1-15MD offers an on-chip CAN controller that removes the need for an external CAN transceiver-controller chip, cutting BOM cost and board area in the 7x7 mm QFN-32 footprint. The 64 KB read-while-write Flash supports field firmware updates over the vehicle service procedure, and 2 KB EEPROM stores calibration and learned-position data without external NVM. Operating at 4.5-5.5 V matches the automotive 12 V rail after load-dump clamping, and the 150 C automotive temperature specification tolerates underhood-adjacent mounting. Combine with a CAN transceiver and 5 V LDO for a complete node.
Recommended
HVAC Blower Control
Automotive HVAC blowers demand closed-loop speed control with diagnostic reporting - a match for the ATMEGA64M1-15MD's PSC PWM, 10-bit ADC, and CAN interface in one 32-QFN package. The MCU regulates blower speed from the cabin controller's CAN commands while monitoring current and temperature through the ADC, implementing stall detection and overcurrent shutdown in hardware fault logic. The 16 MHz AVR core leaves ample MIPS headroom above the PWM loop frequency, and 4 KB SRAM holds sensor filtering buffers. The 150 C grade suits the engine-bay HVAC plenum environment; the exposed pad must be soldered to a ground pour to extract heat in the confined module housing.
Recommended
Fuel Pump Driver Module
In-tank and in-line fuel pump drivers benefit from the ATMEGA64M1-15MD's combination of motor-control PWM, current-sense ADC, and CAN diagnostics in a 150 C-rated device. The PSC generates pump drive PWM for pressure regulation, the ADC closes the fuel-pressure loop, and the CAN controller delivers status and diagnostic trouble codes to the vehicle network, supporting on-board diagnosis requirements. Flash read-while-write allows calibration storage and secure field updates. Because the module may mount on the frame rail or near the tank, the MD grade's 150 C automotive specification provides margin over typical underbody ambients. Estimate junction temperature using Pd = 5 V x Icc plus driver dissipation before finalizing the thermal design.
Recommended
Industrial Motor Drives and Actuators
Beyond automotive, the ATMEGA64M1-15MD serves industrial actuators - conveyor actuators, valve drives, and small pumps - where its PSC PWM replaces an external MCU-plus-PWM-IC solution. The 5 V-only supply simplifies industrial panel designs that already distribute 5 V logic power, and the CAN controller links the drive to industrial CAN/CANopen networks. The 64 KB Flash accommodates protocol stacks plus the motion control loop simultaneously, while 4 KB SRAM supports communication buffering. The 150 C rating, though aimed at automotive, adds reliability margin in hot control cabinets. Development uses the standard AVR ISP/Atmel-ICE toolchain, so no specialized industrial tools are required.
Recommended
Electric Power Steering Assist Pumps
Electro-hydraulic power-steering pumps require safety-relevant motor control: the ATMEGA64M1-15MD provides hardware PWM dead-time, fault-shutdown inputs, ADC-based current monitoring, and CAN communication to the steering ECU in a single AEC-Q100-family device. The 16 MHz single-cycle core executes the current loop and speed ramps deterministically, while 64 KB Flash holds both control firmware and diagnostic routines. The 150 C automotive grade addresses the high underhood ambient near steering hydraulics, and the QFN-32 exposed pad gives a low-impedance thermal path when soldered to a multilayer ground plane. Use the CRC-protected Flash read-while-write mechanism for firmware integrity checks required in safety reviews.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA64M1-15MD β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA64M1-15MU | ATMEGA32M1-15MU | ATMEGA16M1-15MU | ATMEGA64C1-15MU |
|---|---|---|---|---|---|
| Package | 32-VQFN (7x7 mm) Exposed Pad | 32-VQFN (7x7 mm) - same | 32-VQFN (7x7 mm) - same | 32-VQFN (7x7 mm) - same | 32-VQFN (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 32 KB | 16 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 2 KB | 1 KB | 4 KB |
| Maximum Clock | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Temperature Grade | 150 C automotive (MD) | 105 C (MU) | 105 C (MU) | 105 C (MU) | 105 C (MU) |
| PSC Motor-Control PWM | Yes (full PSC) | Yes | Yes | Yes | Reduced (C1 peripheral set) |
| CAN Controller | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| EEPROM | 2 KB | 2 KB | 1 KB | 512 B | 2 KB |
Key Differentiators
- Automotive 150 C temperature grade (vs ATMEGA64M1-15MU)
- Double the memory of ATMEGA32M1-15MU (vs ATMEGA32M1-15MU)
- Full PSC motor-control PWM retained vs ATMEGA64C1-15MU (vs ATMEGA64C1-15MU)
- Trade-off: 5 V-only supply (vs ATMEGA32U2-MU)
Design Notes
The 32-QFN exposed pad is the primary heat-removal path for the ATMEGA64M1-15MD. Connect it to a multilayer ground plane through an array of thermal vias (typically 3x3 or 4x4 under the pad). Estimated: at 5 V, 20 mA typical core+I/O current, dissipation is about 100 mW - negligible; but with multiple 20 mA GPIO drivers, add roughly 5 V x I_load per pin and verify junction temperature stays well below the 150 C automotive rating in the module's worst-case ambient.
Place a 100 nF ceramic decoupling capacitor at each VCC pin, as close to the package as possible, plus a 10 uF bulk capacitor near the MCU. Keep the ISP header (MOSI, MISO, SCK, RESET, VCC, GND) routed short and away from PSC motor-control traces, which carry high di/dt edges. Route CAN TX/RX to the transceiver with a series resistor near the MCU to damp ringing.
This is a 5 V-only device: do not connect 3.3 V peripherals directly to GPIO without level shifting. Do not exceed the 16 MHz speed grade at the 150 C automotive specification - consult the family Appendix A automotive datasheet for any frequency derating near maximum temperature. Also note the ATmega M1/C1 family is not code-compatible with the general-purpose ATmega64; peripheral registers (PSC, CAN) differ, so firmware does not port directly.
For motor-control designs, star-ground the power stage and signal ground at the exposed pad. Keep PSC outputs to the gate drivers as short twisted pairs or adjacent traces, and place current-shunt sensing close to the ADC pins with Kelvin routing to preserve 10-bit ADC accuracy in noisy drive environments.
Compliance Information
Mouser lists the part as Green (RoHS). The ATmega16M1/32M1/32C1/64M1/64C1 family datasheet includes an automotive specification appendix and references AEC-Q100 qualification. REACH/halogen/conflict-minerals status not stated in provided data.
