Circuitos integrados

ATMEGA324A-CUR

ATMEGA324A-CUR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA324A-CUR is an 8-bit AVR RISC microcontroller with 32KB ISP Flash, 1KB EEPROM, 2KB SRAM, a 20MHz maximum clock, and 1.8V to 5.5V supply operation, housed in a 49-ball VFBGA (5x5 mm) package supplied on tape and reel. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs on one die. Within the power-management hierarchy of embedded systems, the MCU sits at the application layer: AVR MCUs like the ATmega324A execute control loops, communication, and signal acquisition, replacing multi-chip discrete logic with one programmable device. Key features include an advanced RISC architecture with 131 powerful instructions, most executing in a single clock cycle; 32 general-purpose working registers; and 32 general-purpose I/O lines. The read-while-write ISP Flash enables self-programming for firmware updates in the field, while the real-time counter plus three flexible timers support precision timing tasks. Technically, the ATmega324A pairs its pipelined AVR core with a 10-bit ADC, multiple serial interfaces, and an on-chip debug/programming channel via In-Circuit Serial Programming (ICSP), compatible with Microchip MPLAB SNAP and Atmel-ICE tools. The wide 1.8V to 5.5V operating range covers 2.5V, 3.3V, and 5V rails, letting one design span battery and industrial voltage domains. Typical applications include industrial sensor nodes, consumer appliance control, and portable battery-powered devices where the compact 5x5 mm VFBGA footprint saves PCB area. Design consideration: at 20MHz the part achieves up to 20 MIPS, but full-speed operation at the lowest voltage is derated per the datasheet frequency-versus-voltage curve, so check safe operating margins for 1.8V designs. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA324A-MCHR

ATMEGA324A-MCHR - 8-bit AVR MCU 32KB Flash 20MHz VQFN-44 | Microchip

The Microchip Technology ATMEGA324A-MCHR is an 8-bit AVR RISC microcontroller with 32KB ISP Flash memory, 1KB EEPROM, and 2KB SRAM, delivering 32 general-purpose I/O lines at clock speeds up to 20 MHz in a 44-pin VQFN (MLF) surface-mount package with exposed pad. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs into one chip. Microcontrollers form the lowest tier of the embedded-computing hierarchy, sitting below system-on-chip (SoC) and application processor families, and are the workhorses of embedded control, IoT nodes, and industrial automation. The ATmega324A belongs to the classic 8-bit AVR family originally developed by Atmel, now part of Microchip Technology. Key features include the advanced RISC architecture with 131 powerful instructions, most of which execute in a single clock cycle, plus 32 general-purpose working registers. Read-while-write Flash allows self-programming for bootloaders and field firmware updates. Peripherals include a real-time counter, three flexible timers with PWM, multiple USARTs, an SPI interface, a two-wire interface (TWI/I2C), and a 10-bit ADC, enabling compact single-chip designs. The enhanced AVR core achieves roughly 1 MIPS per MHz throughput, so at the maximum 20 MHz clock the device delivers approximately 20 MIPS. In-System Programming (ISP) over SPI permits programming without removing the chip from the board, reducing production cost. The 2KB SRAM provides adequate headroom for modest protocol stacks and control loops, while the 1KB EEPROM retains calibration data through power cycles. Typical applications include industrial automation and sensor acquisition nodes, consumer appliances and HVAC controls, and battery-powered instrumentation where the low-power AVR core and wide voltage operation keep average current low. Design consideration: the MCHR suffix denotes the industrial-temperature, 20 MHz VQFN-44 speed/package grade; verify the supply voltage range on the current Microchip datasheet, since distributor summaries occasionally cite different speed-grade figures. This page synthesizes verified distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA324A-MU

ATMEGA324A-MU - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA324A-MU is an 8-bit AVR RISC microcontroller with 32KB ISP Flash memory, 1KB EEPROM, and 2KB SRAM, delivered in a 44-pin VQFN (VFQFN) package with exposed pad and rated for up to 20 MHz operation across an industrial temperature range. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single silicon die. Within the power-management and embedded-systems hierarchy, the ATmega324A sits in the general-purpose 8-bit MCU family, a class still widely chosen for cost-sensitive, low-power control tasks where a 32-bit device would add cost and complexity without benefit. Key features include the AVR enhanced RISC architecture executing 131 powerful instructions, most in a single clock cycle, delivering throughput close to 1 MIPS per MHz. The 32KB of In-System Programmable (ISP) Flash supports read-while-write operation, allowing firmware updates while executing. The part provides 32 general-purpose I/O lines and 32 general-purpose working registers directly connected to the ALU, enabling efficient single-instruction access to two independent registers. Technical depth: the ATmega324A is fabricated in a low-power CMOS process and belongs to the ATmega164A/324A/644A/1284 datasheet family, which shares a common peripheral set including a real-time counter, multiple timers, USART, SPI, and TWI (I2C) serial interfaces. Operating voltage coverage of 2.5V, 3.3V, and 5V systems allows a single design to serve multiple power domains, with the -MU suffix denoting the VQFN industrial-temperature tape-and-reel option. Typical applications include industrial automation controllers, sensor and data-acquisition nodes, HVAC and building-control boards, and consumer appliances that need robust 5V-tolerant I/O with mature tooling. Design consideration: the 44-VFQFN exposed pad should be soldered to a grounded thermal land pattern for both mechanical reliability and heat dissipation; omitting the exposed-pad connection is a common field-failure cause on QFN AVRs. This page synthesizes verified distributor pricing, drop-in same-family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.

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ATMEGA324P-15AT

ATMEGA324P-15AT - 8-bit AVR MCU, 32KB Flash 44-TQFP | Microchip

The Microchip Technology ATMEGA324P-15AT is an 8-bit AVR RISC microcontroller with 32 KB ISP Flash memory, 1 KB EEPROM, 2 KB SRAM, and 32 general-purpose I/O lines, executing up to 16 MIPS at 16 MHz in a 44-pin TQFP (10x10 mm) package. It is AEC-Q100 qualified and positioned for automotive and industrial embedded control. An 8-bit AVR microcontroller is a single-chip computer built around the AVR enhanced RISC core, which belongs to the broader hierarchy of embedded processors: MCU -> microcontroller -> integrated circuit -> semiconductor. The AVR architecture loads one instruction per clock cycle through a single-stage pipeline, and combines a Harvard bus structure with 32 general-purpose working registers directly connected to the arithmetic logic unit, allowing most instructions to execute in a single cycle. Key features of the ATMEGA324P-15AT include read-while-write ISP Flash for self-programming, the picoPower technology set for low standby consumption, two 8-bit timers, one 16-bit timer, a 10-bit ADC with up to 8 single-ended channels, an analog comparator, USART, SPI and two-wire (I2C-compatible) TWI serial interfaces, plus a JTAG interface for boundary scan and on-chip debugging. Technically, the picoPower platform combines a low-leakage process with software-selectable sleep modes, including power-save and standby modes with a running 32.768 kHz crystal timer, enabling battery-backed automotive modules to hold real-time functions in the microampere range. The P suffix denotes the picoPower die generation of the ATmega324 family, and the 15 speed grade supports full function at 16 MHz across the supply window per the speed-versus-voltage curve of the AVR ATmega series. Typical applications include automotive body and comfort control nodes, industrial sensor and actuator controllers, motor control panels, HVAC systems, and battery-powered instrumentation where AEC-Q100 qualification and mature tooling matter. Design consideration: respect the AVR clock-versus-VCC safe operating region - at 16 MHz the device must be operated in the upper supply range, so avoid undervoltage brownout conditions by enabling the internal brown-out detector. This page synthesizes distributor pricing, drop-in alternatives within the AVR ATmega family, and practical design notes not found in the manufacturer datasheet.

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ATMEGA324P-15AT1

ATMEGA324P-15AT1 - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

The Microchip (Atmel) ATMEGA324P-15AT1 is a picoPower 8-bit AVR RISC microcontroller delivering 16 MIPS at 16 MHz, with 32 KB ISP Flash memory, 2 KB SRAM, 1 KB EEPROM, and 32 general purpose I/O lines in a 44-pin TQFP (10x10 mm) package, and it is AEC-Q100 qualified for automotive use. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, sitting within the broader hierarchy of embedded processors: MCU -> AVR ATmega family -> microcontroller unit (MCU) -> semiconductor integrated circuit. AVRs integrate program Flash, data SRAM, EEPROM, timers, UART/SPI/TWI serial interfaces and a 10-bit ADC on a single die, replacing multi-chip solutions in cost- and power-sensitive embedded control designs. Key features include the picoPower low-power technology with idle, power-down and power-save sleep modes, read-while-write Flash for in-system self-programming, and a rich peripheral set: two 8-bit timers, one 16-bit timer, real-time counter, 8-channel 10-bit ADC, USART, SPI and two-wire (I2C) interfaces, and an on-chip debug capability via debugWIRE-style ICSP using just two I/O pins plus reset. The AVR core pairs 32 general purpose working registers directly with the ALU, eliminating the accumulator bottleneck of older 8051-class architectures. In-system programmable (ISP) Flash supports firmware updates in the field through SPI, while boot-section self-programming enables bootloader-based updates over UART. Typical applications include automotive body and comfort modules (leveraging its AEC-Q100 qualification), industrial sensors and actuators, and consumer appliance control boards where 5V-tolerant I/O and wide 2.7V to 5.5V supply operation simplify system design. When designing with this device, budget the maximum 16 MHz clock against your 5.5V worst-case supply, and reserve the PC2-PC7 pins carefully since they double as JTAG/oscillator functions; configure fuses deliberately because an incorrect clock fuse selection can lock out ICSP access. This page synthesizes distributor pricing (LCSC, DigiKey, Octopart), same-footprint drop-in alternatives within the AVR family, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA324P-15MT

ATMEGA324P-15MT - 8-bit AVR MCU 16MHz 32KB Flash VQFN-44 | Microchip

The Microchip Technology ATMEGA324P-15MT is a picoPower 8-bit AVR RISC microcontroller delivering 16 MIPS at 16 MHz, with 32 KB ISP Flash memory, 1 KB EEPROM, 2 KB SRAM, and 32 general purpose I/O lines, housed in a 44-pin VQFN (7x7 mm) surface-mount package. An 8-bit AVR microcontroller is a single-chip computer that integrates a RISC processor core, program memory, data memory, timers, serial peripherals, and analog converters on one die. Within the semiconductor hierarchy it belongs to the microcontroller (MCU) family: processor core, then microcontroller, then embedded system-on-chip. MCUs run the firmware that controls everything from household appliances to industrial sensors, executing deterministic real-time code with low power consumption. The ATMEGA324P is built on the Advanced RISC Architecture with 131 powerful instructions, most executing in a single clock cycle, plus 32 general purpose working registers that are directly connected to the arithmetic logic unit. picoPower technology enables aggressive sleep modes, with the real-time counter running independently to support battery-powered designs. Peripherals include three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface (I2C-compatible), an SPI interface, and an 8-channel 10-bit ADC. In-system programmable (ISP) Flash with read-while-write capability allows firmware updates in the field without removing the device. The 16 MHz maximum clock, internal oscillator option, and wide operating voltage range make the part suitable for both cost-optimized and low-power designs. Typical applications include industrial sensor nodes, HVAC and building automation, consumer appliances, motor control using timer PWM outputs, and battery-powered metering products where the picoPower sleep currents extend battery life. A key design consideration: VQFN packages require a well-defined PCB land pattern and adequate thermal via stitching under the exposed pad for reliable soldering and ground return. This page synthesizes distributor availability data, drop-in alternatives within the AVR ATmega family, and practical design guidance not found in the manufacturer datasheet. Pricing references are as of 2026-09-17.

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ATMEGA324P-15MT1

ATMEGA324P-15MT1 - 8-bit AVR MCU 32KB 44-QFN | Microchip

The Microchip Technology ATMEGA324P-15MT1 is an 8-bit AVR RISC microcontroller with 32KB of ISP Flash program memory, 1KB EEPROM, 2KB SRAM, 32 general-purpose I/O lines, and a maximum operating frequency of 16 MHz, housed in a 44-pin VQFN (44-VFQFN, 7x7 mm) package with exposed pad. It is part of the AVR ATmega family and carries Automotive AEC-Q100 qualification, indicated by the T1 temperature/suffix coding of the 15M speed-grade family. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, placing it in the microcontroller tier of the semiconductor hierarchy (microcontroller -> embedded processor -> integrated circuit). ATmega devices combine program Flash, data SRAM, and EEPROM on one die, along with timers, ADC channels, and serial communication interfaces, forming a complete embedded control system on a single chip. Key features include read-while-write Flash operation for in-system self-programming, 32 general-purpose working registers directly connected to the ALU, and multiple serial interfaces including SPI and TWI (I2C-compatible) plus USART channels. The 44-QFN exposed-pad package provides a compact 7x7 mm footprint with improved thermal and ground performance, suiting space-constrained industrial and automotive nodes. The device belongs to Microchip's picoPower ATmega324P generation, which emphasizes low power consumption through multiple sleep modes, allowing battery-powered and always-on automotive body-electronic applications to minimize standby current. The AVR core supports In-Circuit Serial Programming (ICSP) and on-chip debugging via the debugWIRE interface using the RESET line. Typical applications include automotive auxiliary control modules, industrial sensor and actuator nodes, HVAC and appliance controllers, and handheld instrumentation where a 5V-tolerant 8-bit MCU with 2.7V to 5.5V supply range simplifies mixed-voltage system design. Designers should note that the exposed pad must be soldered to a grounded PCB land pattern for both mechanical reliability and EMC performance, and fuse-bit configuration governs clock source and boot-loader operation. This page synthesizes verified distributor specifications, drop-in family alternatives, and practical design notes beyond what typical distributor listings provide.

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ATMEGA324P-15MZ

ATMEGA324P-15MZ - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-15MZ is an 8-bit AVR RISC microcontroller featuring 16MHz max core speed, 32KB (16K x 16) ISP Flash program memory, 2KB SRAM and 1KB EEPROM, housed in a 44-pin VQFN (7x7 mm) surface-mount package with exposed pad. The device provides 32 general purpose I/O lines and 32 general purpose working registers. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory and peripherals into one chip, forming the heart of embedded systems. The AVR ATmega family sits within the broader hierarchy of 8-bit MCUs, embedded processors, and semiconductors. AVR cores execute most instructions in a single clock cycle through a Harvard architecture with separate program and data buses, delivering high code efficiency for C and assembly programming. Key features of this part include 32KB of ISP Flash with read-while-write capability for in-system firmware updates, 1KB of on-chip EEPROM for non-volatile parameter storage, and in-circuit debugging plus In-Circuit Serial Programming (ICSP) support via just two I/O pins and the reset line. According to Microchip, the picoPower technology on the ATmega324P platform reduces power consumption in sleep and standby modes, extending battery life in portable designs. Technical depth: the AVR RISC core pairs a rich instruction set with fast single-cycle execution, while the peripheral set typical of the ATmega324P family includes USART, SPI, I2C-compatible TWI, timers, and a 10-bit ADC, allowing one chip to handle communications, timing and analog sensing simultaneously. Firmware is developed in Microchip's MPLAB X ecosystem; the MPLAB SNAP programmer connects through an 8-pin SIL connector and implements ICSP and on-chip debugging. Typical applications include industrial control and automation nodes, battery-powered instruments, sensor interfaces and consumer appliances where 32KB of flash, 2KB of RAM and 16MHz throughput are sufficient. Design consideration: the 44-VQFN exposed-pad package requires a well-defined ground plane on the PCB; verify the 16MHz speed grade against your supply voltage before finalizing the design, and reserve programming pads for the two ICSP pins during layout. This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, so engineers can evaluate sourcing risk and second sources in one place. Pricing and stock refresh as of 2026-09-17.

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ATMEGA324P-20AQR

ATMEGA324P-20AQR - 8-bit AVR MCU, 32KB Flash, 20MHz | Microchip

The Microchip ATMEGA324P-20AQR is a picoPower 8-bit AVR RISC microcontroller delivering up to 20 MIPS throughput at 20 MHz, with 32 KB ISP Flash, 1 KB EEPROM, and 2 KB SRAM, housed in a 44-pin TQFP (10x10 mm) surface-mount package rated for extended temperature operation at 2.7V to 5.5V. An 8-bit AVR microcontroller is a single-chip computing device that integrates a Harvard-architecture RISC processor core, program Flash memory, data SRAM, nonvolatile EEPROM, and a rich set of peripherals (timers, USARTs, SPI, ADC) on one die. Within the power-management hierarchy, microcontrollers such as the ATmega324P sit at the top of embedded control systems, replacing discrete MCU-plus-logic combinations in cost- and power-sensitive designs. Key features of this device include 131 powerful instructions with most executing in a single clock cycle, 32 general-purpose working registers, and read-while-write Flash that allows firmware self-programming. The picoPower technology provides aggressive sleep modes - power-down, power-save, and standby - for battery applications. Two USARTs, one SPI, one two-wire (I2C) interface, an 8-channel 10-bit ADC, and a JTAG boundary-scan/debug port round out the peripheral set. Architecturally, the advanced RISC core is fully static, allowing clock frequencies down to DC without state loss. Hardware multipliers and single-cycle ALU operations let the ATMEGA324P-20AQR sustain up to 16-20 MIPS, while the pipelined fetch achieves near one-MIPS-per-MHz efficiency. In-system programmability via SPI (ICSP) and JTAG on-chip debugging simplify development and field updates. Typical applications include industrial automation nodes and sensor hubs (extended temperature rating supports harsh environments), consumer appliances and HVAC controllers that leverage the 10-bit ADC, and battery-powered meters where picoPower sleep currents extend battery life for years. Design consideration: the 44-pin TQFP requires careful decoupling - place 100 nF ceramic capacitors at both VCC pins and AVCC close to the die, and route the reset trace short with an external 10 kOhm pull-up for reliable ICSP programming. This page synthesizes verified distributor data, drop-in alternative MPNs, pinout detail, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA324P-20AU

ATMEGA324P-20AU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-20AU is a high-performance picoPower 8-bit AVR RISC microcontroller delivering 20 MIPS at 20 MHz, with 32 KB ISP Flash, 1 KB EEPROM, and 2 KB SRAM, housed in a 44-pin TQFP (10x10 mm) surface-mount package operating from a 5V supply. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, positioning it in the embedded control hierarchy between simple 8051-class MCUs and 32-bit ARM Cortex-M devices. The ATmega family is a workhorse for industrial control, hobby electronics, and appliance designs where 5V I/O tolerance and low cost matter more than raw processing power. Key features include 32 general purpose I/O lines, two USARTs, a byte-oriented Two-Wire (I2C-compatible) interface, an SPI interface, an 8-channel 10-bit ADC, and three flexible timer/counters with compare modes and PWM. The picoPower technology enables aggressive sleep modes for battery-sensitive designs, while the AVR enhanced RISC instruction set achieves near 1 MIPS/MHz throughput. Architecturally, the device pairs 32 general purpose working registers directly with the ALU, eliminating the accumulator bottleneck of classic 8-bit MCUs. Read-while-write Flash allows self-programming for bootloaders, and In-System Programming (ISP) via SPI simplifies production programming without removing the chip. Typical applications include industrial automation nodes, HVAC and appliance control, sensor acquisition systems using the 10-bit ADC, and embedded designs requiring dual UART ports for modem and debug links. A key design consideration is that this 5V part runs at 20 MHz only at 4.5V-5.5V; at lower VCC the maximum clock frequency derates per the datasheet frequency-versus-voltage curve. This page synthesizes distributor pricing, drop-in family alternatives (ATMEGA324PA, ATMEGA324PB, ATMEGA644P), pinout data, and practical design notes not found in a single manufacturer source.

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ATMEGA324P-20AUR

ATMEGA324P-20AUR - 8-Bit AVR MCU 32KB 20MHz | Microchip

The Microchip Technology ATMEGA324P-20AUR is an 8-bit AVR RISC microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, 32 general-purpose I/O lines, and a 20 MHz maximum clock, supplied in a 44-pin TQFP (10x10 mm) package. It operates from 4.5 V to 5.5 V and is rated for the industrial temperature range of -40C to +85C. An AVR microcontroller is a single-chip embedded controller built on a modified Harvard RISC architecture that executes most instructions in a single clock cycle. Within the product taxonomy it sits at AVR MCU -> 8-bit microcontroller -> microcontroller (MCU) -> embedded processor -> semiconductor. The ATmega324P family is the picoPower generation of the classic ATmega32 line, adding a real-time counter, a JTAG interface, and byte-oriented two-wire serial interface while retaining the 131-instruction AVR core. Key differentiators include 32 KB of self-programmable Flash with read-while-write support, 1 KB of EEPROM for non-volatile parameter storage, 2 KB of SRAM, and a rich peripheral set: two USARTs, an SPI master/slave, a byte-oriented TWI (I2C) interface, three flexible timer/counters with compare modes and PWM, and an 8-channel 10-bit ADC. The picoPower design keeps active current low and supports six sleep modes, making the device suitable for battery-backed and always-on control applications. The ATmega324P is fabricated on Microchip's high-endurance Flash process, guaranteeing 10,000 write/erase cycles for Flash and 100,000 cycles for EEPROM. In-system programming is supported through SPI, JTAG, or a bootloader, and the on-chip debug system allows real-time emulation without an external emulator pod. Typical applications include industrial control panels, building automation nodes, motor control front-ends, battery chargers, handheld instruments, and legacy ATmega32 redesigns where additional USART and timer resources are required. The 44-pin TQFP footprint is shared with the ATmega164P and ATmega644P, allowing memory scaling without PCB changes. When designing with this device, decouple every VCC pin with a 100 nF ceramic capacitor placed within a few millimeters of the pin, and keep the AREF pin bypassed with 100 nF plus 10 uF when the ADC is used. The 20 MHz rating requires VCC at or above 4.5 V; derate the clock to 10 MHz for 2.7 V operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement, and layout decisions.

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ATMEGA324P-20MQ

ATMEGA324P-20MQ - 8-bit AVR MCU 32KB 20MHz VQFN-44 | Microchip

The Microchip Technology ATMEGA324P-20MQ is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, 32 general-purpose I/O lines and 20 MHz maximum clock speed, housed in a 44-pin VQFN (7x7 mm) exposed-pad package operating from 5V. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory and peripherals on one die. The ATmega324P sits within the AVR ATmega family of 8-bit MCUs, which in turn belongs to the broader category of embedded microcontrollers used in power management, industrial control and consumer systems. AVR cores execute most instructions in a single clock cycle, and this device implements 131 powerful instructions with 32 general-purpose working registers for fully static operation. Key features include 32 KB of in-system self-programmable Flash with read-while-write capability, allowing firmware updates without halting execution; picoPower low-power technology for sleep currents in the microamp class; a real-time counter plus multiple flexible timers; and JTAG plus In-Circuit Serial Programming (ICSP) for debugging and programming through only two device I/O pins and reset. Throughput is approximately 20 MIPS at the full 20 MHz clock. Architecturally, the AVR uses a Harvard structure with separate program and data buses, giving fast, deterministic instruction fetch. The P suffix denotes the picoPower feature set, which adds power-reduction registers that can clock-gate individual peripherals to cut consumption in idle, power-save, power-down and standby sleep modes. Typical applications include industrial automation nodes, sensor and data-logging systems, motor and LED control, and consumer appliances that need moderate memory and rich I/O in a compact surface-mount footprint. When designing, reserve the RESET line for ICSP and consider the newer ATMEGA324PA for new designs, as Microchip designates it as the newer device in this family. This page synthesizes distributor pricing, drop-in family alternatives, pinout and practical design notes not found in a single manufacturer datasheet view.

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ATMEGA324P-20MQR

ATMEGA324P-20MQR - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-20MQR is a high-performance picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash memory, 1 KB EEPROM, 2 KB SRAM and 20 MHz maximum operating frequency, housed in a 44-pin VQFN (7x7 mm) package with exposed pad. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, non-volatile program memory, RAM, and peripherals such as timers, UARTs and ADCs into one chip. The ATmega family sits within the broader hierarchy of 8-bit RISC microcontrollers, which are widely used where deterministic, low-power embedded control is required. AVRs execute most instructions in a single clock cycle, delivering high code efficiency for their class. Key features of this device include 32 general purpose I/O lines, 32 general purpose working registers, read-while-write Flash for in-system programming, a real time counter, and the picoPower technology suite for low sleep-mode consumption. The AVR core achieves near 20 MIPS throughput at 20 MHz, and three flexible timer/counters with compare modes support PWM generation and precise event timing. Architecturally, the AVR uses a Harvard structure with separate program and data buses, allowing simultaneous Flash and SRAM access. In-system self-programming enables boot-loader firmware updates in the field, while the JTAG interface supports boundary scan, on-chip debug, and programming on the 44-VQFN package. Typical applications include industrial automation controllers, consumer appliances, and battery-operated instrumentation, where the combination of 32 KB Flash, rich peripherals and picoPower sleep modes fits both cost-sensitive and power-sensitive designs. Design consideration: the 44-VQFN exposed pad must be soldered to a grounded PCB land pattern for reliable thermal and electrical performance; verify the Flash clock constraints between 4.5 V and 5.5 V supply domains in the manufacturer datasheet before finalizing the crystal selection. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet alone.

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ATMEGA324P-20MU

ATMEGA324P-20MU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-20MU is a high-performance picoPower 8-bit AVR RISC microcontroller delivering 20 MHz clock speed, 32 KB ISP Flash memory and 2 KB SRAM in a 44-pin VQFN (7x7 mm) package with exposed pad, operating from a 4.5 V to 5.5 V supply. An 8-bit AVR microcontroller is a single-chip computer that executes an advanced RISC instruction set, combining program Flash, data SRAM, EEPROM, timers, communication peripherals and general-purpose I/O in one package. Within the embedded hierarchy, the ATmega324P sits in the mid-range of the AVR ATmega family, positioned between smaller parts such as the ATmega168 and larger devices such as the ATmega644P, and is a classic member of the wider microcontroller unit (MCU) and power-management-of-systems product category. Key features include 131 powerful instructions with mostly single-cycle execution, 32 general-purpose I/O lines, 1 KB EEPROM with read-while-write Flash capability, a real-time counter, and three flexible timers/counters with compare modes and PWM outputs. The device integrates two USARTs, a byte-oriented two-wire serial interface (I2C-compatible), an SPI serial port, a 10-bit ADC, and a programmable watchdog timer with an internal oscillator. Technically, the picoPower technology enables very low power consumption in sleep modes, while the Harvard architecture with 32 general-purpose working registers achieves throughputs approaching 1 MIPS per MHz, letting designers trade clock speed directly against supply current. In-system programmability (ISP) via SPI allows firmware updates on the assembled board, and JTAG boundary-scan and on-chip debugging are supported through MPLAB tools such as the SNAP programmer. Typical applications include industrial control panels, sensor nodes and instrumentation, consumer appliances, and motor-control or HVAC systems where a 5 V noise-immune MCU with rich peripherals is preferred over a 3.3 V part. A key design consideration: at 20 MHz and 5 V operation, verify Brown-out Detection settings and decouple AVCC with an RC filter to preserve ADC accuracy. Pricing on this page is current as of 2026-09-17, and drop-in alternatives from the same ATmega family are listed below. This page synthesizes distributor pricing, pin-compatible family alternatives, design notes and AI-optimized FAQs not found together on the manufacturer datasheet, giving engineers a complete sourcing and design reference in one place.

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ATMEGA324P-20MUR

ATMEGA324P-20MUR - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-20MUR is an 8-bit AVR RISC microcontroller delivering 20 MIPS at 20 MHz, with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, and 32 general-purpose I/O lines, housed in a 44-pin VQFN (7x7 mm) surface-mount package for industrial temperature ranges at 4.5 V to 5.5 V supply. An 8-bit AVR ATmega microcontroller is a single-chip computer that integrates a Harvard-architecture RISC processor core, program memory (Flash), data memory (SRAM), nonvolatile storage (EEPROM), and peripherals such as timers, UARTs, SPI, TWI (I2C), and a 10-bit ADC on one die. It sits at the lowest tier of the embedded-systems hierarchy - microcontroller, embedded processor, SoC - making it the workhorse of cost-sensitive embedded control designs. Key features include the AVR advanced RISC architecture with 131 powerful instructions, most executing in a single clock cycle, enabling true 20 MIPS throughput at 20 MHz. The picoPower technology from the P-series reduces active and sleep-mode current consumption, critical for battery-backed and energy-conscious designs. Read-while-write Flash allows firmware updates during operation, and In-System Programming (ISP) via SPI enables field upgrades without removing the device. The ATmega324P integrates two 8-bit timers, one 16-bit timer, two USARTs, SPI, TWI, an 8-channel 10-bit ADC, analog comparator, and JTAG (IEEE 1149.1) boundary-scan and debug support - per the Microchip ATmega324P product family documentation. The 44-pin VQFN 7x7 mm footprint suits space-constrained boards while remaining hand-solderable for prototyping. Typical applications include industrial control panels, building automation nodes, sensor and metering systems, consumer appliances, and embedded instrumentation where 5 V industrial signaling and moderate code density (up to 32 KB) are required. Design consideration: at 20 MHz the device must be operated at 4.5 V to 5.5 V; ensure your supply rail is 5 V and place 100 nF decoupling on every VCC/AVCC pin pair. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing refreshed as of 2026-09-17.

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ATMEGA324P-A15AZ

ATMEGA324P-A15AZ - 8-bit AVR MCU 32KB Flash 16MHz TQFP-44 | Microchip

The Microchip Technology ATMEGA324P-A15AZ is an automotive-grade, AEC-Q100 qualified 8-bit AVR RISC microcontroller with 32KB ISP Flash memory, 1KB EEPROM, 2KB SRAM, and 32 general-purpose I/O lines, operating at 16 MHz in a 44-pin TQFP (10x10 mm, 0.8 mm pitch) package. A microcontroller (MCU) integrates a processor core, memory, and programmable peripherals on a single chip, forming the lowest tier of the embedded-system hierarchy: transistor -> logic IC -> microcontroller -> system-on-module. The AVR family uses an advanced RISC architecture with 131 mostly single-cycle instructions and 32 general-purpose working registers, allowing a throughput close to 1 MIPS per MHz. Key features of the ATMEGA324P-A15AZ include picoPower low-power technology, read-while-write Flash programming, and a rich peripheral set: three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire (I2C) serial interface, and an 8-channel 10-bit ADC. Supply voltage is rated 4.5V to 5.5V for this speed grade (the AVR family spans 2.7V to 5.5V across variants). The picoPower technology reduces power in idle and power-down modes, which is significant in automotive battery-connected nodes. The AVR Harvard architecture separates program and data buses, letting instruction fetches overlap with data access for efficient C-code execution. In-System Programming (ISP) enables field firmware updates without removing the device from the PCB. Typical applications include automotive body and comfort modules, industrial sensor nodes, motor control auxiliaries, and building-automation controllers. The AEC-Q100 qualification and automotive temperature grade make it suitable for under-dash and cabin environments. Design consideration: respect the 5V supply requirement of this speed grade and budget EEPROM write endurance in logging applications. Ensure SPI/TQFP thermal relief per Microchip layout guidance. This page synthesizes distributor inventory, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet. Pricing information as of 2026-09-17 is quote-based at listed distributors.

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ATMEGA324P-A15MZ

ATMEGA324P-A15MZ - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

The Microchip Technology ATMEGA324P-A15MZ is an 8-bit AVR RISC microcontroller with 32KB (16K x 16) ISP FLASH memory, 2KB SRAM, 1KB EEPROM, and 32 general-purpose I/O lines, clocked at up to 16MHz and housed in a 44-pin VQFN (7x7 mm) exposed-pad package operating from a 4.5V to 5.5V supply. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die, sitting at the center of the embedded systems hierarchy between discrete logic and full application processors. The ATmega family belongs to the AVR 8-bit RISC line, one of the most widely deployed microcontroller architectures in industrial, automotive, and consumer electronics. Key features of the ATMEGA324P-A15MZ include the Advanced RISC architecture with 131 powerful instructions, most executing in a single clock cycle, and 32 general-purpose working registers directly connected to the ALU for maximum code efficiency. The 'P' suffix denotes the picoPower class with low active and sleep current consumption, while the 'A' grade and automotive-grade suffix indicate extended qualification for demanding environments, per FindIC automotive classification. On-chip peripherals include two 8-bit timers, 16-bit timers with input capture and PWM output compare channels, a 10-bit ADC with multiplexed single-ended and differential inputs, USART serial ports, two-wire interface (TWI/I2C), SPI, an analog comparator, and programmable watchdog timer with separate on-chip oscillator. Read-while-write ISP FLASH allows in-system firmware updates without removing the device from the board. Typical applications span automotive body electronics and sensors, industrial control and motor-driven systems, building automation, consumer appliances, and battery-powered instrumentation where the picoPower sleep modes extend operating life. For design, note the 4.5V to 5.5V supply range: at the 16MHz grade the device is 5V-only, so level shifting is required for 3.3V peripherals, and the VQFN exposed pad should be soldered to a grounded copper pour for both thermal and EMC performance. This page synthesizes distributor pricing context, verified drop-in alternatives within the same 44-VQFN footprint, and practical engineering design notes not found in the manufacturer datasheet alone.

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ATMEGA324PA-ANR

ATMEGA324PA-ANR - AVR 8-bit MCU 32KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA324PA-ANR is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash memory, 1 KB EEPROM, 2 KB SRAM, 32 general-purpose I/O lines, and a maximum clock frequency of 20 MHz, housed in a 44-pin TQFP surface-mount package rated to 105 C and supplied on tape and reel. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip. Within the power-management hierarchy of embedded systems, the MCU sits at the top as the system controller, orchestrating sensors, actuators, and communication interfaces. The ATmega324PA belongs to the AVR ATmega family, based on the AVR enhanced RISC architecture that executes most of its 131 instructions in a single clock cycle, achieving throughput approaching 1 MIPS per MHz. Key features include in-system programmable (ISP) Flash with read-while-write capability, picoPower low-power technology for battery-operated designs, and rich connectivity: I2C (TWI), SPI, and UART/USART serial interfaces. The 32 general-purpose working registers are directly connected to the ALU, allowing two independent registers to be accessed in one instruction execution for maximum efficiency. Technically, the ATmega324PA integrates two 8-bit timers, one 16-bit timer, a 10-bit ADC with multiple single-ended and differential channels, an analog comparator, a programmable watchdog timer with an internal oscillator, and six sleep modes (including Power-down and Power-save) that let designers trade processing speed against power consumption precisely. Typical applications include industrial automation control nodes, battery-powered sensor and metering devices, and consumer appliance interfaces where a moderate memory footprint of 32 KB Flash and 2 KB SRAM is sufficient. A key design consideration: the picoPower variants (PA suffix) provide the lowest active and sleep currents in the family, but clock speed scales directly with power draw, so match the system clock to the actual throughput requirement. This page synthesizes distributor pricing as of 2026-09-17, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA324PA-AU

ATMEGA324PA-AU - 32KB AVR MCU 20MHz TQFP-44 | Microchip

The Microchip (Atmel) ATMEGA324PA-AU is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, 32 GPIO lines, and a 20 MHz maximum clock, housed in a 44-pin TQFP (10x10 mm, 0.8 mm pitch) surface-mount package. An 8-bit AVR microcontroller is a single-chip processor that integrates a Harvard-architecture RISC CPU, program Flash, data SRAM, EEPROM, and peripherals on one die. It sits within the broader hierarchy: MCU -> embedded processor -> integrated circuit, and belongs to the ATmega family used throughout the embedded systems industry. Executing most of its 131 instructions in a single clock cycle, the AVR core achieves throughput approaching 1 MIPS per MHz, letting designers trade clock speed directly against power consumption. Key features include the picoPower low-power technology suite, read-while-write Flash for in-system programming, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented 2-wire serial interface (TWI/I2C), and an 8-channel 10-bit ADC. The 5 V supply range (4.5 V to 5.5 V per the Atmel/Microchip datasheet listing) makes it robust in electrically noisy industrial environments. Architecturally, the device pairs the AVR enhanced RISC core with 32 general-purpose working registers directly connected to the ALU, so a rich instruction set executes in one clock per instruction for most opcodes. In-system programmable Flash with read-while-write support allows firmware updates over SPI or UART bootloaders without removing the chip from the board. Typical applications include industrial automation controllers, sensor nodes and instrumentation, LED lighting and motor-control boards, and hobbyist/embedded products that benefit from the huge ATmega ecosystem of Arduino-compatible tools, compilers, and programmers. For design, keep clock speed as low as the application allows to exploit picoPower sleep modes, and use 100 nF decoupling on each supply pin. Confirm brown-out and supply tolerance at 5 V operation for reliability. This page synthesizes verified distributor data, drop-in alternatives, design notes, and SEO-structured technical content not found on the manufacturer product page alone.

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ATMEGA324PA-AUR

ATMEGA324PA-AUR - 8-Bit AVR MCU 32KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA324PA-AUR is a high-performance picoPower 8-bit AVR RISC microcontroller with 32 KB of in-system programmable Flash, 2 KB SRAM, and 1 KB EEPROM, operating at up to 20 MHz and housed in a 44-pin TQFP (10x10 mm) package. It delivers up to 20 MIPS throughput at 20 MHz and operates from 1.8 V to 5.5 V. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the semiconductor taxonomy, the ATmega324PA sits in the AVR family, under 8-bit microcontrollers, under microcontrollers, under embedded processing ICs. The AVR enhanced RISC architecture executes most instructions in a single clock cycle, giving roughly one MIPS per megahertz. The ATMEGA324PA-AUR integrates 32 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes, two USARTs, a byte-oriented two-wire serial interface, an SPI serial port, an 8-channel 10-bit ADC, a programmable watchdog timer with internal oscillator, and a JTAG interface for boundary-scan and on-chip debugging. The picoPower technology keeps active current low while allowing 1.8 V operation, making the device suitable for battery-powered designs. Typical applications include industrial control panels, battery management systems, home automation nodes, motor control, sensor hubs, and legacy AVR-based designs migrating from ATmega16/32 devices. The 44-pin TQFP footprint is shared across the ATmega164PA/324PA/644PA/1284P family, allowing firmware and layout reuse with only memory-size changes. When designing with this device, decouple every VCC pin with a 100 nF ceramic capacitor placed close to the pin, and provide a clean reset signal through a 10 kOhm pull-up with an optional 100 nF capacitor to ground. The AUR suffix denotes tape-and-reel packaging for automated assembly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement, and layout decisions.

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ATMEGA324PA-CU

ATMEGA324PA-CU - 8-bit AVR MCU 32KB Flash 20MHz VFBGA-49 | Microchip

The Microchip Technology ATMEGA324PA-CU is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, and a 20 MHz maximum clock, housed in a 49-ball VFBGA (5x5 mm) package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals into one package. Within the power-management hierarchy of embedded systems, the 8-bit AVR family from Microchip (originally Atmel) sits in the cost- and power-sensitive segment between tiny 6-pin MCUs and 32-bit ARM cores, and the ATmega324 series is its mid-density 44/49-pin workhorse for general-purpose embedded control. Key features of the ATMEGA324PA-CU include 32 general-purpose I/O lines, 32 general-purpose working registers directly connected to the ALU, 131 mostly single-cycle instructions yielding throughput close to 1 MIPS per MHz, and the picoPower low-power technology for sleep currents suited to battery designs. Memory resources are generous for the class: 32 KB of self-programmable ISP Flash with read-while-write capability, 1 KB of EEPROM for non-volatile calibration data, and 2 KB of internal SRAM. The AVR enhanced RISC architecture executes powerful instructions in a single clock cycle, achieving throughputs up to ten times faster than conventional CISC microcontrollers at the same clock rate. The device supplies three flexible timer/counters with compare modes and PWM, two USARTs for serial communication, a byte-oriented Two-Wire Interface (TWI/I2C), and an 8-channel 10-bit ADC, allowing one chip to service sensing, actuation, and communication simultaneously. Operating supply spans 2.5 V, 3.3 V, and 5 V rails, easing reuse across 5 V industrial and 3.3 V portable designs. Typical applications include industrial automation nodes, portable battery-powered instruments exploiting picoPower sleep modes, consumer appliance control boards, and sensor hubs using the ADC plus TWI. The 5x5 mm VFBGA-49 ball grid array makes the part attractive for compact, two-sided PCB layouts. Design consideration: at 20 MHz and 5 V the device is near its speed/voltage corner; verify the speed-versus-voltage curve in the manufacturer datasheet and provide 100 nF decoupling on every VCC/AVCC ball pair. This page synthesizes distributor cross-reference data, drop-in replacement guidance, and design notes not found in the manufacturer datasheet.

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ATMEGA324PA-CUR

ATMEGA324PA-CUR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

The Microchip Technology (Atmel) ATMEGA324PA-CUR is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash memory, 1 KB EEPROM, and 2 KB SRAM, delivering up to 20 MHz clock operation with 32 general-purpose I/O lines in a 49-ball VFBGA (5x5 mm) package supplied in tape and reel. An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle, sitting at the entry level of the microcontroller hierarchy (MCU -> 8-bit MCU -> AVR ATmega family). AVR MCUs combine program Flash, data SRAM, and EEPROM on a single die, making them self-contained embedded controllers for cost- and power-sensitive designs. Key features include the Advanced RISC architecture with 131 powerful instructions, read-while-write Flash for in-system programming, Microchip's picoPower technology for sub-uA sleep currents, and operation across 2.5V/3.3V/5V supply rails. The 32 general-purpose working registers are directly connected to the ALU, enabling single-cycle execution and high code density for C and assembly development. The picoPower technology uses multiple sleep modes (Idle, Power-down, Power-save, Standby) with an asynchronous timer that keeps a real-time clock running in the deepest low-power states, extending battery life in portable and metering products. The VFBGA ball-grid package minimizes board area to 25 mm2, ideal for compact, two-sided PCB layouts. Typical applications include battery-powered portable instruments, industrial sensor nodes, consumer appliances, and low-cost embedded control where 32 KB Flash is sufficient for the application firmware. For design, note that maximum clock frequency derates with supply voltage; verify the speed-versus-voltage curve in the manufacturer datasheet before selecting a 20 MHz crystal at 2.5V operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA324PA-MCH

ATMEGA324PA-MCH - 8-bit AVR MCU, 20MHz, 32KB Flash | Microchip

The Microchip Technology ATMEGA324PA-MCH is a high-performance, low-power 8-bit AVR RISC microcontroller with 32 KB ISP Flash memory, 1 KB EEPROM, 2 KB SRAM, and up to 20 MHz clock speed, housed in a 44-pin VQFN (5x5 mm) package with exposed pad. It delivers 32 general-purpose I/O lines and near-1 MIPS/MHz throughput. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, sitting in the embedded control hierarchy between tiny 8-pin AVRs and the larger ATmega644/1284 family. MCUs of this class integrate CPU, flash program memory, SRAM, EEPROM, and peripherals on a single die, forming the core of a power management and control system in embedded products. Key differentiating features include Microchip picoPower technology for ultra-low sleep-mode consumption, an advanced RISC core with 131 instructions and 32x8 general-purpose working registers, an on-chip 2-cycle hardware multiplier, and full in-system programmability (ISP) with read-while-write flash capability. Two 8-bit timers, one 16-bit timer, a 10-bit ADC, USART, SPI, and two-wire interface (I2C) peripherals round out the feature set. Architecturally, the device achieves CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing designers to optimize power consumption versus processing speed. The picoPower variant (the P-suffix die) supports multiple sleep modes including Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby. Typical applications include industrial automation sensors and actuators, consumer appliance control boards, battery-powered instrumentation, and building-control or HVAC systems, where the 32 KB flash provides ample headroom for protocol stacks and the VQFN-44 footprint saves board area versus TQFP. For reliable operation, provide a stable 2.7V to 5.5V supply, decouple VCC and AVCC with 100 nF ceramics placed close to the pads, and keep the reset line properly pulled up. Flash endurance of 10,000 write cycles should be respected in data-logging designs. This page synthesizes distributor availability, drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-17.

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ATMEGA324PA-MCHR

ATMEGA324PA-MCHR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA324PA-MCHR is a picoPower 8-bit AVR RISC microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM, 32 general-purpose I/O lines and a maximum clock frequency of 20 MHz, housed in a 44-pin QFN (5x5 mm) surface-mount package with exposed pad. An 8-bit AVR microcontroller is a self-contained computing device that integrates a processor core, program memory, data memory and peripherals such as timers, ADCs and serial interfaces on a single silicon die. Within the power-management and embedded-systems hierarchy, the AVR ATmega family sits in the general-purpose microcontroller category, executing most of its 131 instructions in a single clock cycle to achieve throughput approaching one MIPS per MHz. Key features of the ATMEGA324PA-MCHR include the AVR enhanced RISC architecture, in-system programmable (ISP) Flash with read-while-write support, and the picoPower technology suite that minimizes consumption in sleep modes. Peripherals include a 10-bit ADC, USART, SPI, two-wire interface (I2C), JTAG boundary-scan/debug access, and multiple timer/counters with PWM capability. Technically, the device combines an advanced RISC core with 32 general-purpose working registers directly connected to the ALU, so a single instruction can execute in one clock cycle. In-Circuit Serial Programming (ICSP) via tools such as the MPLAB SNAP allows firmware updates using only two I/O pins plus reset, and JTAG enables on-chip debugging during development. Typical applications include industrial automation controllers, consumer appliances, HVAC and building-control systems, and battery-operated instruments where the picoPower sleep modes extend battery life. When designing with this part, budget the clock source carefully: 20 MHz is valid at higher supply voltage ranges, and PCB layout should place the 100 nF decoupling capacitor and exposed thermal pad grounding as close to the QFN as possible for signal integrity and reliable reset behavior. This page adds information gain beyond the datasheet: verified distributor pricing tiers, same-package drop-in alternatives within the ATmega family, comparison tables, and practical design notes synthesized as of 2026-09-17.

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Productos (38.000+)

ATMEGA324A-CUR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

ATMEGA324A-MCHR - 8-bit AVR MCU 32KB Flash 20MHz VQFN-44 | Microchip

ATMEGA324A-MU - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

ATMEGA324P-15AT - 8-bit AVR MCU, 32KB Flash 44-TQFP | Microchip

ATMEGA324P-15AT1 - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

ATMEGA324P-15MT - 8-bit AVR MCU 16MHz 32KB Flash VQFN-44 | Microchip

ATMEGA324P-15MT1 - 8-bit AVR MCU 32KB 44-QFN | Microchip

ATMEGA324P-15MZ - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

ATMEGA324P-20AQR - 8-bit AVR MCU, 32KB Flash, 20MHz | Microchip

ATMEGA324P-20AU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

ATMEGA324P-20AUR - 8-Bit AVR MCU 32KB 20MHz | Microchip

ATMEGA324P-20MQ - 8-bit AVR MCU 32KB 20MHz VQFN-44 | Microchip

ATMEGA324P-20MQR - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip

ATMEGA324P-20MU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

ATMEGA324P-20MUR - 8-bit AVR MCU 20MHz 32KB Flash | Microchip

ATMEGA324P-A15AZ - 8-bit AVR MCU 32KB Flash 16MHz TQFP-44 | Microchip

ATMEGA324P-A15MZ - 8-Bit AVR MCU 16MHz 32KB Flash | Microchip

ATMEGA324PA-ANR - AVR 8-bit MCU 32KB Flash 20MHz | Microchip

ATMEGA324PA-AU - 32KB AVR MCU 20MHz TQFP-44 | Microchip

ATMEGA324PA-AUR - 8-Bit AVR MCU 32KB Flash 20MHz | Microchip

ATMEGA324PA-CU - 8-bit AVR MCU 32KB Flash 20MHz VFBGA-49 | Microchip

ATMEGA324PA-CUR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip

ATMEGA324PA-MCH - 8-bit AVR MCU, 20MHz, 32KB Flash | Microchip

ATMEGA324PA-MCHR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip