ATMEGA64M1-15AZ - 64KB AVR MCU 16MHz Automotive | Microchip
MPN: ATMEGA64M1-15AZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.12 | $7.12 |
| 10 | $6.48 | $64.80 |
| 100 | $5.75 | $575.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.68 | $4,680.00 |
ATMEGA64M1-15AZ Overview
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.
Drop-in alternatives for ATMEGA64M1-15AZ 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 ATMEGA64M1-15AZ (same form factor and footprint) β differing in ADC, Operating Temperature, Package, Mounting Type, EEPROM.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA64M1-15MZ
β Drop-Inβ In Stock
$3.12 / Unit
View Datasheet βATMEGA64C1-15AZ
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA32M1-15AZ
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA32M1-AU
β Drop-Inβ In Stock
$4.98 / Unit
View Datasheet βATMEGA32C1-15AZ
β Drop-Inβ In Stock
$2.95 / Unit
View Datasheet βATMEGA64M1-15AZ Maximum Ratings & Electrical Characteristics
| 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) |
| Package / Case | 32-TQFP |
| Pin Count | 32 |
| Mounting Type | Surface Mount |
| Oscillator Type | Internal |
| Operating Temperature | -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 Status | Green / RoHS compliant |
ATMEGA64M1-15AZ 32-tqfp Pin Configuration Guide
Pin configuration for ATMEGA64M1-15AZ (32-tqfp 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 ATMEGA64M1-15AZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA64M1-15AZ is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA64M1-15AZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Full 64 KB Flash with read-while-write for boot-loader field updates (vs ATMEGA32M1-15AZ)
- Automotive +125 C screening (AZ grade) (vs ATMEGA64M1-15MZ)
- Integrated motor-control PSC with complementary PWM (vs ATMEGA644P-20AU)
Design Notes
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.
Compliance Information
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.
