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ATMEGA64L-8MQ - 8-Bit AVR MCU 64KB 8MHz 64-QFN | Microchip
ATMEGA64L-8MQ

ATMEGA64L-8MQ - 8-Bit AVR MCU 64KB 8MHz 64-QFN | Microchip

The Microchip Technology ATMEGA64L-8MQ is an 8-bit AVR ATmega microcontroller IC delivering up to 8 MIPS throughput at 8 MHz, with 64KB (32K x 16) of In-System Programmable FLASH, 4KB SRAM, 2KB EEPROM, and a supply voltage range of 2.7V to 5.5V, packaged in a 64-pin VFQFN (9x9 mm) exposed-pad surface-mount package. The Q suffix denotes Microchip's green/RoHS-compliant matte-tin plating. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, achieving throughput approaching one MIPS per MHz. Within the power-management hierarchy, the ATmega64 sits in the mid-range flash microcontroller family, bridging small ATmega8/16/32 parts and the ATmega128, and integrates CPU, memory, timers, ADC, UARTs, SPI, TWI and analog comparators on one die. Key features include the AVR enhanced RISC core with 130 powerful instructions and 32 x 8 general-purpose working registers, fully static operation, in-system self-programmable flash, and an on-chip ADC that operates down to the extended-temperature industrial range. The low-voltage L variant is specified for 2.7V to 5.5V operation at up to 8 MHz, enabling single-supply battery-powered designs. Architecturally, the single-cycle execution model lets designers optimize power consumption versus processing speed, since the same work can be completed at a lower clock frequency. Peripherals include two 8-bit timers, two 16-bit timers, two UARTs, an 8-channel 10-bit ADC, SPI and TWI interfaces. Typical applications include industrial control and monitoring, battery-powered instrumentation, sensor hubs, and embedded communication nodes that need multiple UARTs. Design note: Microchip lists this part as a mature product not recommended for new designs, replaced by the ATmega64A family - plan second-source or migration early. This page adds distributor pricing, drop-in same-family alternatives, and selection guidance not found in the raw datasheet, with prices as of 2026-09-18.

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ATMEGA64L-8MU - 8-bit AVR MCU, 8MHz, 64KB Flash | Microchip
ATMEGA64L-8MU

ATMEGA64L-8MU - 8-bit AVR MCU, 8MHz, 64KB Flash | Microchip

The Microchip Technology ATMEGA64L-8MU is an 8-bit AVR ATmega microcontroller with 64KB of in-system programmable Flash (32K x 16), 4KB SRAM, 2KB EEPROM, and a maximum clock speed of 8MHz, housed in a 64-pin QFN (9x9 mm) package. An 8-bit microcontroller is a complete computer system on a single integrated circuit, combining a processor core, memory, and peripherals such as timers, UARTs, ADCs, and SPI/I2C interfaces. The ATmega64 belongs to the AVR family of enhanced RISC microcontrollers, positioned within the broader hierarchy of embedded processors and power-management-capable MCU platforms. AVR cores execute most instructions in a single clock cycle, achieving throughputs approaching one MIPS per MHz. Key features include 130 powerful instructions with mostly single-cycle execution, 32 x 8 general purpose working registers, fully static operation, and 53 general purpose I/O lines. The 64KB self-programmable Flash supports in-system programming via SPI, and the 4KB internal SRAM plus 2KB EEPROM provide ample on-chip data storage for embedded control tasks. Technically, the ATMEGA64L-8MU is based on the AVR enhanced RISC architecture with a Harvard bus design that fetches instructions and data simultaneously. The L-suffix grade supports lower supply voltage operation than the standard grade, making it suitable for battery-powered and 3V-class designs, while the U-suffix temperature range covers -40C to +85C for industrial environments. The low-power CMOS process allows the system designer to optimize power consumption versus processing speed. Typical applications include industrial automation and control panels, building and HVAC controllers, embedded instrumentation, and legacy system maintenance where the ATmega64 replaces the earlier ATmega103 on existing PCBs, as it is 100% pin compatible with that device. When designing with this part, note that Microchip lists the ATmega64 as a mature product not recommended for new designs, with the ATmega64A as the recommended replacement; pin-compatible migration within the ATmega64/ATmega128 family is documented in Microchip application notes. This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility guidance, and practical design notes not found in the manufacturer datasheet, providing information gain beyond raw specification listings.

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ATMEGA64L-8MUR - 8MHz AVR MCU 64KB Flash | Microchip
ATMEGA64L-8MUR

ATMEGA64L-8MUR - 8MHz AVR MCU 64KB Flash | Microchip

The Microchip Technology ATMEGA64L-8MUR is an 8-bit AVR ATmega microcontroller delivering up to 8 MIPS throughput at 8 MHz, with 64 KB (32K x 16) in-system programmable Flash, 4 KB SRAM, 2 KB EEPROM, and 53 general-purpose I/O lines, housed in a 64-QFN (9x9 mm) MLF surface-mount package. An 8-bit microcontroller (MCU) is a self-contained computing chip that integrates a processor core, non-volatile program memory, static RAM, and peripherals such as timers, ADCs, and serial interfaces on a single die. Within the power-management and embedded-systems hierarchy, the MCU sits at the control layer above discrete logic and below application processors, executing one instruction per clock cycle in the AVR enhanced RISC architecture for near-1 MIPS per MHz performance. Key features include the AVR RISC core with 130 powerful instructions (most single-cycle), 32 x 8 general-purpose working registers, fully static operation, and dual programmable serial USARTs. The 64 KB self-programmable Flash supports bootloader firmware updates, while the JTAG interface (IEEE compliant, on-chip debug and boundary scan) enables in-circuit debugging. Two 8-bit and two 16-bit timers with PWM, an 8-channel 10-bit ADC, byte-oriented Two-Wire Interface (I2C), SPI, and an analog comparator round out the peripheral set. The ATmega64L 'L' variant is characterized for operation down to 2.7 V and up to 8 MHz, allowing single-supply 3.3 V or 5 V designs. Advanced RISC Harvard architecture with separate instruction and data buses achieves C-code density close to assembly. Power management includes six sleep modes and an on-chip Brown-out detector for supply-glitch resilience. Typical applications include industrial control panels, metering systems, building automation nodes, and battery-powered instrumentation where the 53 I/O lines and dual USARTs eliminate external glue logic. Per Microchip, this is a mature product not recommended for new designs; the ATmega64A is the designated replacement. Design consideration: keep ADC channels free of high-current PWM switching by careful PCB routing, and always enable the Brown-out detector below 4.5 V supplies. This page synthesizes distributor pricing tiers, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

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ATMEGA64M1-15AD - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA64M1-15AD

ATMEGA64M1-15AD - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA64M1-15AD is an automotive-grade 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory (read-while-write capable), 2 KB EEPROM, 4 KB SRAM, and a maximum clock frequency of 16 MHz, housed in a 32-pin TQFP (7x7 mm) package rated for operation up to 150 degrees C. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, positioned within the power-management and embedded-control hierarchy as a complete system-on-chip: CPU, program memory, data memory, peripherals, and I/O integrated in a single IC. The ATmega M1/C1 family extends the standard ATmega line with motor-control and automotive connectivity peripherals targeted at in-vehicle embedded nodes. Key features of the ATMEGA64M1-15AD include 64 KB self-programmable ISP Flash, 2 KB on-chip EEPROM for parameter storage, 4 KB internal SRAM, 32 general purpose working registers, and 27 general purpose I/O lines in this package option. The part integrates a motor-control peripheral set and LIN/ CAN-class communication capability that distinguishes the M1 family from generic ATmega64 devices. Architecturally, the AVR core couples a single-cycle ALU with fast-register file access, achieving up to 16 MIPS throughput at 16 MHz. Read-while-write Flash allows firmware updates in the field without stalling execution, supporting bootloader-based OTA or diagnostic update strategies common in automotive ECUs. The A temperature grade suffix (-15AD) qualifies the device for extended ambient conditions demanded by under-hood and near-engine placements. Typical applications include automotive body-control modules, LIN-bus mechatronic nodes, DC motor and blower control units, HVAC actuators, and industrial motor drives where a 5 V supply rail and high junction temperature rating are required. Design consideration: the 4.5 V to 5.5 V supply window means the part must be powered from a regulated 5 V rail (typically from a vehicle 12 V bus via a pre-regulator), and the 150 degrees C rating must be reconciled with package thermal resistance in the PCB stackup. This page synthesizes verified distributor data, drop-in alternatives, pricing tiers, and practical design notes not found in the manufacturer datasheet.

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ATMEGA64M1-15AZ - 64KB AVR MCU 16MHz Automotive | Microchip
ATMEGA64M1-15AZ

ATMEGA64M1-15AZ - 64KB AVR MCU 16MHz Automotive | Microchip

The Microchip Technology ATMEGA64M1-15AZ is an 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and a 16 MHz maximum clock, housed in a 32-pin TQFP package and qualified for automotive applications up to +125 C. 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.

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ATMEGA64M1-15MD - 64KB AVR MCU, 150C Auto, QFN-32 | Microchip
ATMEGA64M1-15MD

ATMEGA64M1-15MD - 64KB AVR MCU, 150C Auto, QFN-32 | Microchip

The Microchip Technology ATMEGA64M1-15MD is an 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and a 16 MHz maximum clock frequency, housed in a 32-pin VQFN (7x7 mm) exposed-pad package rated for the automotive 150 C temperature grade. 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.

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ATMEGA64M1-15MZ - 64KB Flash AVR MCU 16MHz 32-QFN | Microchip
ATMEGA64M1-15MZ

ATMEGA64M1-15MZ - 64KB Flash AVR MCU 16MHz 32-QFN | Microchip

The Microchip Technology ATMEGA64M1-15MZ is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, and 2 KB EEPROM, operating at up to 16 MHz from a 2.7 V to 5.5 V supply in a 32-pin VQFN exposed-pad (7x7 mm) package. It is an automotive AEC-Q100 qualified part aimed at motor-control and body-electronics systems. An 8-bit AVR microcontroller executes most instructions in a single clock cycle using an enhanced RISC architecture with 32 general-purpose working registers, combining high code efficiency with low power consumption. Within the power-management hierarchy, the ATmega M1/C1 family sits in the embedded MCU class dedicated to automotive motor control, joining the broader categories of 8-bit microcontrollers, flash MCUs, and automotive semiconductors. Key differentiating features include 64 KB of self-programmable ISP Flash with read-while-write capability for field firmware updates, an integrated motor-control peripheral set including the PSC (Programmable Slice Counter) for multi-phase motor drive, 27 general purpose I/O lines, and dedicated LIN (Local Interconnect Network) support for in-vehicle networking. The 15 MHz grade suffix in -15MZ denotes the automotive speed grade used in vehicle environments. Architecturally, the device is a low-power CMOS AVR core with single-cycle ALU operation, in-system programmable Flash, and peripherals tailored to brushed and brushless DC motor control such as high-resolution PWM generation and complementary outputs with dead-time control. This makes it a complete single-chip solution for mechatronic nodes where the MCU directly drives power stages. Typical applications include automotive DC and BLDC motor control (window lifters, HVAC blowers, pumps), LIN-based body-control modules, and industrial motor-drive nodes requiring automotive reliability grades. When designing with this part, plan thermal dissipation through the exposed pad on the 32-VQFN: connect it to a ground pour with thermal vias, since motor-drive duty cycles concentrate heat in the package. This page synthesizes distributor pricing data, drop-in same-family alternatives, and automotive-qualification context not consolidated in the standard Microchip datasheet.

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ATMEGA64M1-AU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA64M1-AU

ATMEGA64M1-AU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip

The Microchip Technology ATMEGA64M1-AU is a high-performance, low-power 8-bit AVR RISC microcontroller combining 64 KB ISP Flash memory with read-while-write capability, 2 KB EEPROM, 4 KB SRAM, and 16 MHz max clock speed, housed in a 32-pin TQFP (7x7 mm) package. A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and peripherals onto one die, sitting at the heart of embedded control systems within the broader power-management and automotive-electronics hierarchy. The AVR ATmega family is an 8-bit RISC architecture with 32 general-purpose working registers, executing most instructions in a single clock cycle for high code efficiency. Key differentiating features of the ATmega64M1 include one dedicated motor power stage controller (PSC) with complementary PWM outputs, a LIN (Local Interconnect Network) 2.1-compliant UART with hardware LIN support, two flexible timer/counters with compare modes and PWM, and an 11-channel 10-bit ADC with two independent muxes for simultaneous sampling of motor phase currents. Technical depth: the AVR core runs at up to 16 MHz from a 4.5 V to 5.5 V supply, delivering roughly 16 MIPS throughput. The on-chip PSC peripheral was purpose-built for BLDC/DC motor control with programmable dead-time and fault protection, while the hardware LIN block offloads automotive LIN bus communication from software. Typical applications include automotive body electronics and LIN nodes, BLDC/brushed DC motor control in HVAC blowers and pumps, and industrial sensor/actuator control where 5 V noise immunity matters. Design consideration: because the supply range tops out at 5.5 V, level-shift LIN transceivers and gate drivers must be selected for 5 V logic compatibility; ensure Brown-out detection is enabled for automotive load-dump robustness. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical motor-control design notes not found in a single manufacturer datasheet.

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ATMEGA64M1-MU - 8-bit AVR MCU 64KB Flash 16MHz LIN | Microchip
ATMEGA64M1-MU

ATMEGA64M1-MU - 8-bit AVR MCU 64KB Flash 16MHz LIN | Microchip

The Microchip Technology ATMEGA64M1-MU is an 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 2 KB EEPROM, 4 KB SRAM, and a maximum CPU clock of 16 MHz, housed in a 32-pin VQFN (5x5 mm) exposed-pad package. It integrates a LIN 2.1 controller and motor-control-oriented peripherals targeted at automotive and industrial nodes. A microcontroller unit (MCU) is a single-chip computer that combines a processor core, nonvolatile program memory, data RAM, and peripherals on one die, sitting inside the broader hierarchy of embedded processors: AVR 8-bit core -> ATmega family -> microcontroller -> semiconductor device. The AVR architecture uses a Harvard memory map and mostly single-cycle instruction execution, so effective throughput approaches 16 MIPS at 16 MHz. Key features of the ATMEGA64M1 include read-while-write self-programming Flash for in-system updates, 27 general-purpose I/O lines, and 32 general-purpose working registers that give the compiler fast register access. The M1 sub-family adds automotive-grade peripherals such as the LIN controller, a Power Stage Controller (PSC) for motor drive PWM generation, and an analog section suited to sensor-based closed-loop control. Architecturally, the device belongs to the ATmega16M1/32M1/64M1/64C1 automotive family sharing the same die-level peripherals and software compatibility, which simplifies migration between memory-density points. The external data memory interface of the generic ATmega64 line is replaced by LIN and PSC blocks, trading universal bus expansion for in-vehicle networking and drive capability. Typical applications include LIN-based body control modules, DC and BLDC motor control with PSC-driven half-bridges, HVAC blower and pump control, and sensor or actuator nodes on the 12V automotive bus. The 16 MHz rating and rich analog block also fit pump and fan controllers in industrial equipment. Design consideration: at the 16 MHz maximum frequency the device is typically clocked from the internal oscillator or an external crystal; ensure the VQFN exposed pad is soldered to a solid ground plane for thermal and EMC performance in automotive environments. This page synthesizes distributor pricing, family drop-in alternatives, and application guidance not found in a single manufacturer datasheet.

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ATMEGA8-16AC - 8-bit AVR MCU, 8KB Flash, 16MHz | Microchip
ATMEGA8-16AC

ATMEGA8-16AC - 8-bit AVR MCU, 8KB Flash, 16MHz | Microchip

The Microchip Technology ATMEGA8-16AC is an 8-bit AVR RISC microcontroller with 8KB of In-System Programmable Flash, 1KB SRAM, 512B EEPROM, and a 6 or 8-channel 10-bit ADC, delivering up to 16 MIPS throughput at 16MHz in a 32-pin TQFP package. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, positioning it within the broader hierarchy of microcontrollers -> embedded processors -> semiconductors. MCUs of this class integrate program Flash, data SRAM, nonvolatile EEPROM, timers, ADC, and communication peripherals on a single die, replacing multi-chip solutions in cost-sensitive embedded systems. Key features include the Advanced RISC architecture with 130 powerful instructions, 32 general-purpose working registers, and fully static operation to 16MHz. The -16A suffix denotes the 16MHz maximum clock; the -C suffix denotes the commercial 0C to +70C temperature range with 4.5V to 5.5V supply. Peripherals include two 8-bit timers, one 16-bit timer with input capture and dual PWM outputs, USART, SPI, and TWI (I2C-compatible) interfaces. The ATmega8 AVR core pairs the Flash program memory with a separate SRAM data path and an on-chip boot-capable self-programming Flash, allowing firmware updates over UART or other links without external programmers. Brown-out reset, internal RC oscillator options, and six sleep modes support robust, low-power designs. The 10-bit ADC supports both single-ended and differential inputs with a selectable 2.56V internal reference. Typical applications include industrial control panels, sensor interfaces and data loggers, motor and LED control, hobby and educational platforms (the classic Arduino heritage), and small consumer appliances where 8KB of code space and 5V I/O are sufficient. When designing with the ATMEGA8-16AC, remember that 16MHz operation requires a 4.5V to 5.5V supply; the 8MHz ATMEGA8L variants are needed for 2.7V to 5.5V designs. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in a single manufacturer datasheet.

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ATMEGA8-16AI - 8-Bit AVR MCU 16MHz 8KB Flash | Microchip
ATMEGA8-16AI

ATMEGA8-16AI - 8-Bit AVR MCU 16MHz 8KB Flash | Microchip

The Microchip ATMEGA8-16AI is an 8-bit AVR RISC microcontroller with 8 KB of in-system programmable Flash, 1 KB SRAM, and 512 bytes EEPROM, running at up to 16 MHz and delivering up to 16 MIPS throughput, housed in a 32-pin TQFP (7x7 mm) package. It integrates a 10-bit successive-approximation ADC with 6 or 8 multiplexed channels, two 8-bit timers, one 16-bit timer, a programmable watchdog, an internal calibrated RC oscillator, and a full set of serial interfaces including USART, SPI, and a byte-oriented two-wire (I2C-compatible) interface. An AVR microcontroller is a single-chip computer built around the AVR enhanced RISC architecture, a Harvard-architecture 8-bit core that executes most instructions in a single clock cycle from 32 general-purpose working registers. Within the semiconductor taxonomy, the ATmega8 sits at the entry level of the AVR ATmega family, which itself belongs to the broader class of 8-bit microcontrollers, embedded processors, and finally integrated circuits. The ATmega8 was the original device that popularized the AVR platform in hobbyist and industrial designs, and its register map and instruction set remain the reference point for later ATmega parts. Key differentiators of the ATMEGA8-16AI include 8 KB self-programming Flash with an endurance rating of 10,000 write/erase cycles, 130 powerful instructions with most executing in a single clock cycle, 32 programmable I/O lines, and a wide 2.7 V to 5.5 V operating range. The 16 MHz maximum frequency at 4.5 V to 5.5 V makes it suitable for timing-sensitive control loops, while the 10-bit ADC with 15 kSPS conversion rate supports direct analog sensor interfacing without external converters. The device uses Atmel's high-density nonvolatile memory process technology and a fully static core that can be clocked down to DC, enabling aggressive power reduction in battery-powered designs. Six sleep modes, including Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby, allow the MCU to trade throughput for current consumption, with Power-down current in the low microampere range. Typical applications include industrial motor and relay control, battery chargers and power supplies, handheld instrumentation, home automation nodes, and legacy embedded control boards. The integrated USART, SPI, and TWI interfaces make it a natural fit for designs that must bridge analog sensors to a host processor or field bus. When designing with the ATMEGA8-16AI, note that the TQFP-32 package requires careful decoupling of AVCC and VCC, and that the internal RC oscillator should be calibrated if used as the system clock. The device is obsolete per distributor lifecycle data, so designs should plan for a migration path to the pin-compatible ATmega8A or the ATmega88 family. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for replacement planning and layout decisions.

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ATMEGA8-16AU - 8-bit AVR MCU 16MHz 8KB Flash | Microchip
ATMEGA8-16AU

ATMEGA8-16AU - 8-bit AVR MCU 16MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA8-16AU (originally Atmel) is an 8-bit AVR RISC microcontroller running at up to 16 MHz with 8 KB of In-System Programmable FLASH, 512 B EEPROM, and 1 KB SRAM, housed in a 32-pin TQFP (7 x 7 mm, 0.8 mm pitch) surface-mount package. It operates from a 4.5 V to 5.5 V supply and provides 23 programmable I/O lines. An 8-bit microcontroller (MCU) is a self-contained computing chip that integrates a processor core, memory, and peripherals on a single die. Within the power-management hierarchy of embedded systems, the ATmega8 belongs to the AVR family of reduced-instruction-set (RISC) MCUs, positioned as a compact workhorse for control tasks where 32-bit processors are unnecessary. Key features include the Advanced RISC architecture with 130 powerful instructions, most executing in a single clock cycle, plus 32 general-purpose working registers. Peripherals include two 8-bit timers/counters with PWM, one 16-bit timer, a 10-bit ADC with 6 or 8 multiplexed channels, a byte-oriented Two-Wire Interface (I2C-compatible), an SPI serial port, and a programmable USART. In-System Programmable (ISP) FLASH allows firmware updates on the assembled board. Architecturally, the AVR Harvard design accesses program and data memory simultaneously, sustaining close to 1 MIPS per MHz of clock, so the 16 MHz ATMEGA8-16AU delivers roughly 16 MIPS throughput. ISP and self-programming support field updates without removing the chip. Typical applications include industrial automation and sensor control, motor control and power-conversion boards, consumer appliances, hobbyist and Arduino-compatible boards (the MiniCore project supports ATmega8), and instrumentation front-ends using the 10-bit ADC. A key design consideration: the 4.5-5.5 V supply range means this speed grade is not suitable for 3.3 V rails; use the ATmega8L-8AU for low-voltage designs. Provide proper ISP header and crystal layout on the XTAL1/XTAL2 pins. This page synthesizes distributor listings, drop-in alternatives, cross-reference data, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8-16MC - 8KB Flash 16MHz AVR MCU 32-VQFN | Microchip
ATMEGA8-16MC

ATMEGA8-16MC - 8KB Flash 16MHz AVR MCU 32-VQFN | Microchip

The Microchip (Atmel) ATMEGA8-16MC is a low-power 8-bit AVR RISC microcontroller delivering up to 16 MIPS throughput at 16 MHz, with 8KB In-System Programmable Flash, 512B EEPROM, 1KB SRAM, and a 32-pin VQFN (5x5 mm) package. An 8-bit microcontroller is a self-contained computing device that integrates a processor core, program memory, data memory, and peripherals on a single silicon die. Within the power-management and embedded-control hierarchy, MCUs sit at the system level: they read sensors, execute firmware, and drive actuators, replacing discrete logic and analog control circuits. The AVR family popularized single-cycle RISC execution, where most of its 130 instructions complete in one clock cycle, giving deterministic real-time behavior prized in embedded control. Key features of the ATMEGA8-16MC include Harvard architecture with separate program and data buses, 32 general-purpose working registers directly connected to the ALU, and fully static operation allowing clock frequencies down to DC. The 10-bit ADC with 6 or 8 multiplexed channels handles analog sensing without external converters, while three flexible Timer/Counters with compare modes support PWM generation, event counting, and precise timing. Architecturally, the AVR core pairs its register file with an arithmetic logic unit in a single-cycle pipeline: one instruction is fetched while the previous executes. This yields 1 MIPS per MHz efficiency, letting engineers run at lower clock speeds to cut power consumption. In-System Programmable (ISP) Flash with Read-While-Write capability enables firmware updates on assembled boards via the serial peripheral USART or SPI interface. Typical applications include industrial control panels, motor and LED control, sensor acquisition nodes using the built-in 10-bit ADC, and low-cost consumer appliance firmware. The compact 5x5 mm VQFN suits space-constrained designs. Design-wise, verify the exact supply voltage range for the 16 MHz speed grade in the manufacturer datasheet before layout, and decouple AVCC separately from VCC for ADC accuracy. This page synthesizes distributor pricing context, drop-in alternatives, pinout data, and practical design notes not found in the raw datasheet.

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ATMEGA8-16MJ - 8-bit AVR MCU 16MHz 8KB Flash 32-VQFN | Microchip
ATMEGA8-16MJ

ATMEGA8-16MJ - 8-bit AVR MCU 16MHz 8KB Flash 32-VQFN | Microchip

The Microchip Technology ATMEGA8-16MJ is an 8-bit AVR RISC microcontroller delivering 16 MIPS throughput at 16 MHz, with 8 KB (4K x 16) In-System Programmable Flash, 1 KB SRAM, 512 bytes EEPROM, and 23 general-purpose I/O lines, housed in a 32-VFQFN exposed-pad (MLF-32, 5x5 mm) package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. Within the power/performance hierarchy, it sits as: AVR ATmega core -> 8-bit microcontroller -> embedded processor -> system-on-board controller. MCUs of this class run firmware directly from Flash and are the backbone of cost-sensitive embedded control systems. Key features include the Advanced RISC architecture with 130 powerful instructions, most executed in a single clock cycle; 32 general-purpose 8-bit working registers; three flexible Timer/Counters with compare modes; a programmable serial USART; and an internal RC oscillator option that removes the need for an external crystal in many designs. Technically, the AVR Harvard architecture separates program and data buses, enabling Read-While-Write Flash programming and single-cycle instruction execution. The 6- or 8-channel 10-bit ADC, two-wire (I2C-compatible) interface, and SPI port cover most sensing and communication needs in a single chip. In-System Programming via SPI allows firmware updates without removing the device from the board. Typical applications include industrial automation control nodes, consumer appliance controllers, and embedded sensor systems where a 16 MHz, 8 KB Flash budget is sufficient and the compact 5x5 mm QFN footprint saves board space. Design consideration: the -MJ suffix indicates the industrial temperature MLF package; verify voltage range and brown-out fuse settings against your supply rail, and use the exposed pad as ground for best thermal and EMI performance. This page synthesizes distributor availability, drop-in alternative analysis, and pinout detail not consolidated in the manufacturer datasheet. Pricing shown as of 2026-09-18.

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ATMEGA8-16MU - AVR 8-bit MCU 16MHz 8KB Flash | Microchip
ATMEGA8-16MU

ATMEGA8-16MU - AVR 8-bit MCU 16MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA8-16MU is an 8-bit AVR RISC microcontroller with 8KB of In-System Programmable Flash memory, a maximum clock speed of 16 MHz, and 23 general-purpose I/O lines, housed in a 32-pad VQFN/MLF (5x5 mm) surface-mount package. It operates from a 4.5V to 5.5V supply, making it a native 5V logic device for industrial environments. An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, program memory, data memory, and peripherals on a single chip. MCUs sit at the heart of the embedded-systems hierarchy - from raw silicon to the microcontroller unit to complete embedded control systems - executing dedicated control tasks in appliances, motors, sensors, and communication equipment. Key features of the ATMEGA8-16MU include the advanced AVR RISC architecture with 130 powerful instructions, most executed in a single clock cycle, delivering up to 16 MIPS throughput at 16 MHz. On-chip memory comprises 8KB (4K x 16) ISP Flash, 512B EEPROM, and SRAM for data storage. Integrated analog and digital peripherals - including a 10-bit ADC, timers, USART, SPI, and TWI (I2C) - reduce external component count. Technically, the AVR core's Harvard architecture separates program and data buses, allowing simultaneous access and single-cycle instruction execution. In-System Programmability (ICSP) via the SPI or bootloader enables firmware updates without removing the device from the PCB, while debugWIRE-style tool support through MPLAB SNAP programmers simplifies development. Typical applications include industrial control and automation nodes, motor control and power-supply supervision, and consumer appliance interfaces. The 5V supply range and 23 I/O lines suit noise-tolerant industrial signal environments where 3.3V parts struggle. For design, budget the flash carefully: 8KB fills quickly with floating-point or communication stacks, and the industrial temperature variant (suffix I) should be selected for -40C to +85C environments. This page synthesizes verified distributor data, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8-16MUR - 8KB Flash 16MHz AVR MCU | Microchip
ATMEGA8-16MUR

ATMEGA8-16MUR - 8KB Flash 16MHz AVR MCU | Microchip

The Microchip Technology ATMEGA8-16MUR is an 8-bit AVR RISC microcontroller with 8 KB in-system self-programmable Flash, 512 B EEPROM, 1 KB SRAM, and a maximum clock speed of 16 MHz, housed in a 32-pin VQFN (5x5 mm) exposed-pad package (MLF-32). An 8-bit microcontroller integrates a CPU core, program memory, data memory, and peripherals such as timers, UART, SPI, and ADC on a single silicon die, forming the lowest tier of the embedded processor hierarchy (MCU -> embedded processor -> SoC). Microchip's AVR architecture executes most of its 130 powerful instructions in a single clock cycle, delivering up to 16 MIPS at 16 MHz. Key features include the advanced RISC AVR core with 32 general-purpose working registers, a 6 or 8 channel 10-bit ADC, in-system self-programmable Flash for field firmware updates, and industrial temperature grade (IND) qualification per the Mouser listing. The exposed pad improves thermal and ground performance in the compact 5x5 mm footprint. Technical depth: the ATmega8 Harvard architecture separates program and data buses, allowing simultaneous fetch and execution. Two-wire Interface (I2C-compatible), USART, and SPI serial interfaces cover most connectivity needs, while three PWM channels support motor and LED control. Data retention of Flash and EEPROM is specified for 20 years at 85C per Atmel/Microchip documentation. Typical applications include industrial control nodes, consumer appliances, sensor interfaces using the 10-bit ADC, and hobby/embedded products requiring 5V operation at 4.5 V to 5.5 V supply. Design consideration: program the fuse bits correctly for clock source selection; the device ships calibrated for internal RC oscillator, but external crystal on PB6/PB7 is required for full 16 MHz accuracy tolerance. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and design notes not found on any single distributor page.

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ATMEGA8-16PC - 16MHz 8-bit AVR MCU, 8KB Flash | Microchip
ATMEGA8-16PC

ATMEGA8-16PC - 16MHz 8-bit AVR MCU, 8KB Flash | Microchip

The Microchip Technology ATMEGA8-16PC is an 8-bit AVR RISC microcontroller with a 16 MHz maximum operating frequency, 8 KB of self-programmable flash memory, 1 KB of SRAM, and a 28-pin PDIP package. Its specified operating supply range is 4.5 V to 5.5 V, making it suitable for 5 V embedded control, sensor, actuator, and communication systems. The part also provides 512 bytes of EEPROM and a 10-bit ADC with six or eight channels, depending on the device variant and package details. An AVR microcontroller is an embedded-processing semiconductor that combines a CPU core, program memory, data memory, peripherals, and input/output ports on one integrated circuit. The ATmega8 family uses a RISC architecture designed for efficient instruction execution and broad embedded-control use. Its self-programmable flash allows firmware to be programmed and updated in system, while SRAM supports working data and stack operations. The device belongs to the broader hierarchy of 8-bit MCU, embedded controller, digital IC, and semiconductor. The ATMEGA8-16PC combines 16 MHz operation with 8 KB flash, 1 KB SRAM, and 512 bytes EEPROM. Its ADC supports 10-bit conversion and multiple channels, enabling direct acquisition of analog sensor signals without a separate converter. The 28-pin PDIP package provides through-hole assembly compatibility and straightforward prototyping. The supplied data identifies the AVR ATmega series, an 8-bit architecture, and the -16 speed designation corresponding to the 16 MHz device. At 16 MHz, the AVR core can execute its instruction set at a high rate for control tasks, while the small memory footprint suits compact firmware and low-cost embedded products. The ADC, EEPROM, digital I/O, and in-system programmability reduce the need for external support circuitry. The verified data does not specify every electrical timing, current, temperature, pin, or package dimension, so those values should be confirmed in the manufacturer datasheet before production design. Typical uses include industrial control boards, temperature and light monitoring, simple motor or relay control, educational AVR platforms, and compact sensor interfaces. A designer should account for the 4.5 V to 5.5 V supply requirement, connect the appropriate clock and decoupling components, and preserve the device-specific pin functions when laying out a replacement board. Firmware and bootloader compatibility should also be verified before changing the MCU grade or package. This product data consolidates the verified ATMEGA8-16PC specifications, package identity, distributor listings, pricing search context, and practical selection considerations. It is intended to support initial design decisions, sourcing, and comparison rather than replace the complete manufacturer datasheet, programming manual, and electrical validation.

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ATMEGA8-16PI - 8KB Flash, 16MHz AVR MCU, 28-PDIP | Microchip
ATMEGA8-16PI

ATMEGA8-16PI - 8KB Flash, 16MHz AVR MCU, 28-PDIP | Microchip

The Microchip Technology (Atmel) ATMEGA8-16PI is an 8-bit AVR RISC microcontroller with 8KB (4K x 16) In-System Programmable Flash, 1KB SRAM, and 512B EEPROM, running at up to 16MHz from a 4.5V to 5.5V supply in a 28-pin PDIP (0.300 in, 7.62mm) package rated for the industrial temperature range of -40C to +85C. An 8-bit AVR microcontroller is a single-chip processor built on the AVR enhanced RISC architecture, in which most instructions execute in a single clock cycle, delivering throughput near 1 MIPS per MHz. Microcontrollers of this class integrate program Flash, SRAM, EEPROM, peripherals, and a CPU core in one package, sitting between simple logic ICs and application processors in the embedded systems hierarchy. Key features include 8KB self-programmable Flash with 10,000 write-cycle endurance, 23 programmable I/O lines, one 8-channel 10-bit ADC (6 channels in PDIP), two 8-bit and one 16-bit timer with PWM, a hardware USART, SPI, and TWI (I2C) interfaces, plus an on-chip analog comparator. These peripherals allow the ATMEGA8-16PI to replace multiple discrete components in compact embedded designs. The AVR core uses Harvard architecture with separate program and data buses, and includes 32 general-purpose working registers directly connected to the ALU, enabling single-cycle execution and high code density. In-system programmability via SPI allows firmware updates without removing the device from the board, supported by lock bits for code protection. Typical applications include hobby and Arduino-compatible boards, industrial control panels, appliance control, sensor interfacing with the built-in ADC, and low-cost serial communication bridges using the hardware USART. The DIP package is favored for prototyping, education, and repair of legacy through-hole designs. Design-wise, the 4.5V to 5.5V operating range pairs naturally with 5V logic; for 2.7V to 5.5V or low-power battery designs, select the ATmega8L speed-graded variant instead. Add 0.1uF decoupling on VCC and AVCC, and keep the reset pin pulled up for reliable ISP programming. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-18.

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ATMEGA8-16PU - 8-Bit AVR MCU 16MHz 8KB Flash | Microchip
ATMEGA8-16PU

ATMEGA8-16PU - 8-Bit AVR MCU 16MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA8-16PU is an 8-bit AVR RISC microcontroller delivering up to 16 MIPS throughput at 16 MHz, with 8 KB of In-System Programmable FLASH, 1 KB SRAM, and 512 B EEPROM, housed in a 28-pin PDIP (PU) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the embedded systems hierarchy, the ATmega8 belongs to the AVR ATmega family of 8-bit microcontrollers, positioned above tinyAVR parts and below the ATmega64/128 family, and it competes with Microchip PIC16 and STMicroelectronics STM8 devices. Key differentiating features include the advanced AVR RISC architecture with 130 powerful instructions, most executing in a single clock cycle, plus 32 general-purpose 8-bit working registers that enable the 1 MIPS/MHz throughput rating. The device integrates three flexible timer/counters, a 10-bit ADC with 8 channels, I2C (Two-Wire Interface), SPI, and UART/USART connectivity, a programmable watchdog timer, internal calibrated RC oscillator, and brown-out detection. Technical depth: the read-while-write FLASH supports true in-system programming via SPI, and the separate on-chip boot loader program section allows firmware updates over the serial port without external programmer hardware. Fully static operation permits clocking down to 0 Hz for minimum power consumption in idle and power-down sleep modes. Typical applications include hobbyist and education platforms (Arduino-compatible boards via MiniCore), industrial sensor nodes, motor control with PWM timer outputs, LED displays, and small embedded control products where through-hole mounting simplifies prototyping. Design consideration: the PDIP package is ideal for breadboarding, but at 16 MHz ensure a proper decoupling capacitor (100 nF) close to VCC/GND and use an external crystal with appropriate load capacitors for clock accuracy. This page synthesizes distributor pricing, verified drop-in alternatives such as ATMEGA8A-PU, and practical design notes not found in the manufacturer datasheet.

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ATMEGA808-AFR - 20MHz 8KB Flash AVR MCU TQFP-32 | Microchip
ATMEGA808-AFR

ATMEGA808-AFR - 20MHz 8KB Flash AVR MCU TQFP-32 | Microchip

The Microchip Technology ATMEGA808-AFR is an 8-bit megaAVR 0 series microcontroller with an AVR processor core featuring a hardware multiplier, running at up to 20 MHz with 8 KB Flash, 1 KB SRAM, and 256 bytes of EEPROM, housed in a 32-pin TQFP (7x7 mm) package with AEC-Q100 automotive-grade qualification. An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, executing one instruction per cycle on 8-bit data words. Within the power-management and embedded-control hierarchy, the MCU sits at the top of the system, orchestrating sensors, actuators, and communication interfaces. The megaAVR 0 series is Microchip's modernized AVR family built on the Core Independent Peripherals (CIP) philosophy, descended from the classic ATmega architecture used in countless industrial and consumer designs. Key features include the 20 MHz maximum CPU clock, 8 KB of self-programmable Flash memory, and Core Independent Peripherals that continue operating without CPU intervention. The device integrates a 10-bit ADC, analog comparators, USARTs, SPI, and TWI (I2C) interfaces, plus flexible event system routing. The AFR suffix denotes the automotive temperature grade of -40C to +125C and functional safety (FuSa) support, per DigiKey product data. Technically, the AVR core executes most instructions in a single clock cycle with a Harvard architecture and hardware multiplier, delivering efficient MIPS-per-MHz. The event system allows peripherals such as timers, ADC, and comparators to interact directly, offloading deterministic tasks from software and reducing interrupt latency and jitter. Typical applications include automotive body and comfort modules, industrial sensor nodes, motor control辅助 circuits, home appliances, and general-purpose embedded control where low cost, low power, and CIP-driven determinism matter. The 7x7 mm TQFP-32 footprint suits compact two-layer PCBs. A key design consideration: the AFR (automotive) variant is pin-compatible with the industrial ATMEGA808-AN, so a single PCB layout can serve both temperature-grade SKUs; verify memory-size needs before choosing between 808/1608/3208/4808 family members, which share the same TQFP-32 footprint. This page synthesizes distributor pricing, drop-in alternatives within the megaAVR 0 family, pinout data, and practical design notes not consolidated in the manufacturer datasheet, helping engineers shortlist and cross-reference parts faster.

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ATMEGA808-AUR - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip
ATMEGA808-AUR

ATMEGA808-AUR - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip

The Microchip ATMEGA808-AUR is an 8-bit megaAVR 0-series microcontroller featuring the AVR processor with hardware multiplier, running at up to 20 MHz, with 8 KB Flash, 1 KB SRAM and 256 bytes of EEPROM, housed in a 32-pin TQFP (7x7 mm) package. The -AUR suffix denotes Tape and Reel packaging with an industrial temperature rating of -40C to +85C. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory (Flash), data memory (SRAM), non-volatile EEPROM, and peripherals such as timers, USART, SPI, I2C and ADC on one chip. Microcontrollers form the lowest layer of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip, and are the building blocks of virtually every electronic product. Key features of the ATMEGA808-AUR include a 20 MHz maximum clock frequency with functionality maintained down to 1.8V, 8 KB of on-chip In-System Reprogrammable Flash organized with a 16-bit data width (AVR instructions are 16 or 32 bits wide), 1 KB of SRAM, and 256 bytes of Data EEPROM. The device also carries Functional Safety (FuSa) documentation support per Microchip's product listing, making it attractive for safety-relevant industrial designs. The megaAVR 0-series uses Microchip's latest Core Independent Peripherals (CIPs), allowing peripherals such as timers and comparators to operate without CPU intervention, which reduces interrupt latency and software complexity. The AVR RISC architecture executes most instructions in a single cycle, and the hardware multiplier enables efficient 8x8 arithmetic for control loops and lightweight DSP tasks. Typical applications include industrial automation and sensor nodes, motor control and power conversion, home appliances, and general-purpose embedded control where 8 KB of Flash is sufficient. The 32-pin TQFP offers 25+ GPIO and a 7x7 mm footprint suited to compact two- or four-layer boards. Design consideration: Flash programming and debugging use the single-wire UPDI interface on pin PA0, so reserve UPDI access on your PCB for in-system programming. This page synthesizes verified distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet. Pricing references are as of 2026-09-18.

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ATMEGA808-MF - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip
ATMEGA808-MF

ATMEGA808-MF - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA808-MF is an 8-bit AVR megaAVR 0-series microcontroller with hardware multiplier, running at up to 20 MHz with 8 KB Flash, 1 KB SRAM and 256 bytes of EEPROM, housed in a 32-pin VQFN (5x5 mm) package. It is a Functional Safety (FuSa) qualified part operating from a 4.5V to 5.5V supply. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals on one die. Within the hierarchy of semiconductor devices, the MCU sits at the application layer of embedded systems: an 8-bit AVR core is a RISC architecture well suited to cost-sensitive control tasks, sitting above bare logic ICs and below 32-bit ARM-based application processors. The megaAVR 0-series is Microchip's modernized AVR family built on Core Independent Peripherals (CIPs). Key features of the ATMEGA808-MF include the AVR RISC CPU with a hardware multiplier executing most instructions in a single cycle, 20 MHz maximum clock frequency, 8 KB of self-programmable Flash memory, 1 KB of SRAM, and 256 bytes of EEPROM for parameter retention. Core Independent Peripherals such as TCA/TCB timers, the Analog-to-Digital Converter (ADC), analog comparators, and configurable custom logic (CCL) offload tasks from the CPU, reducing latency and code complexity. Technically, the megaAVR 0-series introduces a new peripheral set with event system routing, allowing peripherals to communicate without CPU intervention. The device supports single-cycle I/O access, multi-level interrupt vectors, and an CRC-checked boot process. Memory is organized as Harvard architecture with separate program and data buses. Typical applications include industrial control and automation nodes, Functional Safety (FuSa) oriented designs, home appliances, motor control interfaces, and embedded sensing systems where 8 KB of code space and rich analog peripherals are sufficient. Design consideration: the -MF variant is specified for 4.5V to 5.5V operation to reach the full 20 MHz clock; for lower-voltage or battery designs, the wide-voltage -MN variant (down to 1.8V) should be evaluated instead. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA808-MU - 8KB AVR MCU 20MHz VQFN-32 | Microchip
ATMEGA808-MU

ATMEGA808-MU - 8KB AVR MCU 20MHz VQFN-32 | Microchip

The Microchip Technology ATMEGA808-MU is an 8-bit AVR megaAVR 0-series microcontroller with hardware multiplier, running at up to 20 MHz, offering 8 KB Flash, 1 KB SRAM, and 256 bytes of EEPROM in a 32-pin VQFN (5x5 mm) package with exposed pad. An 8-bit microcontroller (MCU) is an integrated circuit that integrates a processor core, program memory, data memory, and peripherals on a single chip, executing one instruction over an 8-bit data bus. Within the embedded-system hierarchy, the MCU sits at the device level below system-on-chip and application processors, and the megaAVR 0-series is Microchip's modernized AVR generation built on the latest Core Independent Peripherals philosophy, succeeding classic megaAVR parts such as the ATmega328P family while maintaining the AVR instruction-set heritage. Key differentiating specifications include the wide 1.8V to 5.5V operating voltage range, which allows direct operation from single-cell Li-ion-adjacent 3.3V and 5V industrial rails; the 20 MHz maximum CPU clock with single-cycle hardware multiplier for efficient math; and Functional Safety (FuSa) documentation support, easing compliance work in safety-oriented designs. Connectivity covers I2C, SPI, and USART serial interfaces with 27 general-purpose I/O lines on the 32-pin variant. Technically, the megaAVR 0-series AVR core features a modified Harvard architecture with a two-stage pipeline, single-cycle instruction execution for most instructions, and peripheral modules such as event system routing that let timers, ADCs, and communication blocks interact without CPU intervention, reducing interrupt latency and deterministic-jitter in real-time loops. Flash-based program memory supports in-system self-programming for bootloaders. Typical applications include industrial control and automation nodes, consumer appliances and HVAC control boards, and motor control or LED lighting systems where a 5V-tolerant 8-bit MCU with rich timers is preferred over 32-bit parts for cost and simplicity. The FuSa support also suits functional-safety assessments in industrial equipment. A key design consideration: supply decoupling and the exposed pad should be soldered to ground for thermal and EMC performance, and the 1.8-5.5V range means BOD thresholds must be programmed to match the rail. This page synthesizes distributor pricing, drop-in alternatives within the megaAVR 0-series, and practical design guidance not found in the manufacturer datasheet, with pricing as of 2026-09-18.

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ATMEGA808-MUR - 8-bit AVR MCU 20MHz 8KB Flash | Microchip
ATMEGA808-MUR

ATMEGA808-MUR - 8-bit AVR MCU 20MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA808-MUR is an 8-bit megaAVR 0-series microcontroller with a 20 MHz AVR core with hardware multiplier, 8 KB Flash, 1 KB SRAM and 256 bytes of EEPROM, housed in a 32-pin VQFN (5x5 mm) package with exposed pad. It is part of the functional-safety (FuSa) qualified megaAVR 0 family. A microcontroller (MCU) is a single-chip embedded computer integrating a processor core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog-to-digital converters. Within the power-management hierarchy of embedded design, an 8-bit MCU like the ATmega808 sits at the low-to-mid complexity tier, ideal for deterministic, low-cost control tasks where a 32-bit ARM core would be unnecessary. Key features include the AVR RISC processor executing most instructions in a single cycle for up to 20 MIPS at 20 MHz, 10-bit ADC capability (per LCSC product data), operation from -40C to +85C, and 5V operation characteristic of the megaAVR 0 series. The series uses Microchip's latest Core Independent Peripherals (CIPs), allowing hardware tasks such as PWM generation and communication to run without CPU intervention, reducing firmware complexity and improving real-time determinism. Architecturally, the ATmega808/809/1608/1609 family shares the ATmega809 family datasheet (document DS40002172C), with Flash organized as 16-bit words since AVR instructions are 16 or 32 bits wide. On-chip In-System Programming (ISP) allows reprogramming without removal from the board. The event system interconnects peripherals directly, enabling autonomous signal routing between timers, ADC, and custom logic peripherals. Typical applications include industrial automation control boards, home appliance and consumer electronics control, and motor control or lighting systems where 5V noise immunity and single-cycle I/O access are valuable. The 32-VQFN (5x5) exposed-pad package suits space-constrained, thermally demanding PCBs. Design consideration: the 8 KB Flash and 1 KB SRAM budget firmware size carefully; use -O2 compilation and the tiny printf variants. The exposed pad should be soldered to a ground plane for thermal and EMC performance. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing verified as of 2026-09-18.

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