Microcontroladores

Produtos (18688)

ATMEGA644P-A15AZ - 64KB Flash 16MHz 5V AVR MCU | Microchip
ATMEGA644P-A15AZ

ATMEGA644P-A15AZ - 64KB Flash 16MHz 5V AVR MCU | Microchip

The Microchip Technology ATMEGA644P-A15AZ is an 8-bit AVR RISC microcontroller with 64KB Flash, 4KB SRAM, and 2KB EEPROM, rated for 16 MHz operation at 4.5V to 5.5V supply, housed in a 44-pin TQFP (10x10 mm) surface-mount package. An 8-bit microcontroller is a single-chip computer whose data bus, ALU, and registers operate on 8-bit words. In the system hierarchy it belongs to the embedded processor family: microcontroller -> embedded MCU -> semiconductor IC. Microcontrollers such as the ATMEGA644P-A15AZ integrate CPU, program memory, data memory, peripherals (USART, SPI, I2C/TWI, timers, ADC), and I/O ports on a single die, replacing multi-chip processor boards in cost- and power-sensitive designs. The AVR architecture executes most instructions in a single clock cycle, delivering throughput approaching 1 MIPS per MHz. Key features of the ATMEGA644P-A15AZ include 64KB of self-programmable Flash memory, 4KB of internal SRAM, 2KB of EEPROM for non-volatile data storage, and 53 general-purpose I/O lines across four 8-bit ports. The picoPower 'P' suffix denotes low-power AVR core operation, and the device provides two USARTs for serial communication. The integrated 10-bit ADC supports up to 8 channels, and six PWM channels support motor and lighting control. Technically, the AVR enhanced RISC core combines a rich instruction set with 32 general-purpose working registers, all directly connected to the ALU, allowing two independent registers to be accessed in one instruction executed in one clock cycle. The A15AZ speed-grade marking is characterized at 5V and 16 MHz across the -40C to +85C (or +105C) automotive temperature range, satisfying AEC-Q100 stress-test requirements as evidenced by the 'AZ' suffix and the automotive qualification trail documented on the Microchip product page. Typical applications include industrial control and automation nodes, embedded instrumentation and data loggers, automotive body and chassis subsystems, and consumer appliance control boards, where the 5V-tolerant I/O and 53 I/O lines simplify direct connection to sensors, keypads, displays, and actuators without level shifting. Design consideration: the ATMEGA644P-A15AZ is specified for a 4.5V to 5.5V supply; designs targeting 3.3V operation must instead select the picoPower ATMEGA644PA family or a low-voltage variant, since this A15AZ speed-grade part is characterized at 5V and 16 MHz. Microchip lists the ATmega644P family as a mature product, not recommended for new designs, replaced by the ATmega644PA. This page synthesizes distributor stock and pricing signals, drop-in alternative cross-references from verified web data, and practical design guidance not found in the manufacturer datasheet alone, providing engineers a single decision-ready resource.

USD $4,42 Em estoque
ATMEGA644P-A15MZ - 64KB AVR MCU, 16MHz, VQFN-44 | Microchip
ATMEGA644P-A15MZ

ATMEGA644P-A15MZ - 64KB AVR MCU, 16MHz, VQFN-44 | Microchip

The Microchip Technology ATMEGA644P-A15MZ is an 8-bit AVR RISC microcontroller with 64KB ISP flash, 4KB SRAM, and 2KB EEPROM, operating at up to 16 MHz from a 4.5V to 5.5V supply in a 44-pin VQFN (7x7 mm) package. This automotive-grade variant is compliant with AEC-Q100 and targets vehicular and industrial applications. An 8-bit AVR microcontroller is a complete computer-on-a-chip built around the AVR RISC core, combining program memory, data memory, timers, serial interfaces, and an ADC in a single IC. Within the power-management-free MCU hierarchy, it sits below 32-bit MCUs and above small 8-bit parts like the ATmega328, making it a mid-range embedded processor for control tasks. Key features include dual USARTs for two independent serial links, an 8-channel 10-bit ADC for analog sensing, and a byte-oriented TWI (I2C) interface plus SPI for peripherals. 32 general-purpose I/O lines and three flexible timers with compare modes and PWM support motor control and LED driving. In-system programmability with read-while-write flash allows firmware updates on the final product. The AVR architecture executes most instructions in a single clock cycle, delivering up to 16 MIPS throughput at 16 MHz. Harvard-architecture separate program and data buses, 32 general-purpose working registers, and a rich interrupt structure provide deterministic real-time behavior valued in automotive body electronics and industrial automation. JTAG and debugWIRE-style debug access simplifies software bring-up. Typical applications include automotive body control modules, industrial sensor nodes, HVAC controllers, and motor-driven appliances. The dual USART and 10-bit ADC make it a fit for gateway nodes bridging analog sensors to serial networks. When designing with this part, budget the 4KB SRAM carefully - stack, heap, and buffers share it - and use the brown-out detector plus watchdog timer for robust operation in electrically noisy vehicle environments. This page synthesizes distributor pricing from LCSC and DigiKey, drop-in alternatives within the ATmega644P/644PA family, and practical design notes not found in the manufacturer datasheet.

USD $2,00 Em estoque
ATMEGA644PA-ANR - 8-bit AVR MCU 64KB Flash 44-TQFP | Microchip
ATMEGA644PA-ANR

ATMEGA644PA-ANR - 8-bit AVR MCU 64KB Flash 44-TQFP | Microchip

The Microchip Technology ATMEGA644PA-ANR is a high-performance, low-power 8-bit AVR RISC microcontroller featuring 64 KB of ISP Flash memory with read-while-write capability, 2 KB EEPROM, 4 KB SRAM, and 32 general purpose I/O lines, housed in a 44-pin TQFP (10x10 mm) package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the heart of embedded systems. The ATmega family sits within the broader hierarchy of 8-bit microcontrollers, part of Microchip's AVR line, which is widely used in industrial control, consumer devices, and hobbyist electronics. picoPower technology makes this part a member of the low-power MCU class suited for battery-operated designs. Key features include an advanced RISC architecture with 131 powerful instructions, most executing in a single clock cycle, and throughput up to 20 MIPS at 20 MHz. Peripherals include two USARTs, an 8-channel 10-bit ADC, a byte-oriented Two-Wire Interface (TWI/I2C), SPI, three flexible timer/counters with compare modes and PWM, a real-time counter, an on-chip 2-cycle multiplier, and an on-chip debug interface. The picoPower technology supports multiple sleep modes for aggressive power reduction. The ATMEGA644PA-ANR is manufactured in Microchip's high-density nonvolatile memory process, and the ISP Flash can be reprogrammed in-system through the SPI serial interface, by a conventional programmer, or by an on-chip boot program, enabling firmware updates in the field. Verified data lists a 16 MHz speed grade with operation to 105 C and a Tape & Reel (TR) supply format. Typical applications include industrial automation nodes, sensor acquisition systems using the 10-bit ADC, motor control with PWM timers, and embedded communication products using the dual USARTs or TWI bus. A key design consideration: the AVR core is fully static, so clock speed can be scaled down to reduce power, and the internal RC oscillator eliminates an external crystal in non-timing-critical designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $3,35 Em estoque
ATMEGA644PA-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip
ATMEGA644PA-AU

ATMEGA644PA-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip

The Microchip Technology ATMEGA644PA-AU is a high-performance 8-bit AVR RISC picoPower microcontroller delivering 20 MHz maximum clock frequency, 64 KB ISP Flash memory with read-while-write capability, 4 KB SRAM, and 2 KB EEPROM, housed in a 44-pin TQFP (10x10 mm) package operating from 1.8V to 5.5V. An 8-bit AVR microcontroller is a reduced-instruction-set computing (RISC) device in the microcontroller unit (MCU) hierarchy of embedded processors, integrating a CPU core, program memory, data memory, and peripherals on a single chip. Microcontrollers sit below application processors and above ASICs in the embedded system taxonomy, making them the workhorse of industrial control, consumer devices, and IoT nodes. The AVR family is distinguished by its single-cycle instruction execution through 32 general-purpose working registers, achieving up to 20 MIPS throughput at 20 MHz. Key features include 32 general purpose I/O lines, two USARTs for asynchronous serial communication, a byte-oriented Two-Wire serial interface (TWI/I2C), an SPI serial port, an 8-channel 10-bit ADC with up to 15 kSps throughput, and three flexible timer/counters with compare modes and PWM. The picoPower technology achieves very low power consumption in active and sleep modes, extending battery life in portable designs through six software-selectable power-saving modes. The 64 KB Flash supports In-System Programming (ISP) with read-while-write, enabling firmware field updates without external programmers. The device supports boot loader programming through any interface and operates across 1.8V-5.5V supply range, allowing direct interface with both 3.3V and 5V logic. Peripherals include a real-time counter with separate oscillator, programmable watchdog timer with on-chip oscillator, and JTAG/OCD/debugWIRE on-chip debug interface. Typical applications include industrial control systems, sensor nodes, battery-powered instrumentation, motor control boards using PWM channels, and Arduino-compatible hobby projects where the 644P variant is widely supported. The wide operating voltage also suits solar-powered remote sensing nodes. For design, decouple VCC and AVCC separately with 100 nF ceramic capacitors, and reserve the RESET pin for ISP programming access. The device programs via ICSP using only two I/O pins plus reset. Supply voltage determines maximum safe clock frequency, so verify speed-grade derating at low VCC (10 MHz max at 2.7V). This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.

USD $4,61 Em estoque
ATMEGA644PA-AUR - 8-Bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644PA-AUR

ATMEGA644PA-AUR - 8-Bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip

The Microchip Technology ATMEGA644PA-AUR is a high-performance 8-bit AVR RISC picoPower microcontroller featuring 64 KB ISP Flash memory with read-while-write capability, 4 KB SRAM, 2 KB EEPROM, and 32 general purpose I/O lines, executing up to 20 MIPS at 20 MHz in a 44-pin TQFP (10x10 mm) package. An 8-bit microcontroller is an integrated circuit that executes program instructions and controls peripherals using an 8-bit-wide CPU data path. Within the embedded systems hierarchy, the ATmega644PA belongs to the AVR ATmega family of flash-based MCUs, which sits under the broader categories of microcontrollers, embedded processors, and semiconductors. Single-cycle instruction execution allows system designers to optimize power consumption versus processing speed, approaching one MIPS per megahertz. Key features include 131 powerful instructions with mostly single-clock cycle execution, 32 general purpose working registers, an on-chip 2-cycle hardware multiplier, and Microchip's picoPower technology for ultra-low sleep-mode current. Peripherals comprise three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface (TWI/I2C), an 8-channel 10-bit ADC, a real-time counter, and SPI for in-system programming. Architecturally, the device uses a Harvard-architecture AVR RISC core with separate program and data buses, enabling read-while-write flash operation and deterministic single-cycle execution. The 64 KB self-programmable ISP flash supports bootloader firmware updates in the field, while the 2 KB EEPROM retains calibration data through power cycles. Typical applications include industrial automation controllers, sensor data loggers, embedded human-machine interfaces, motor control panels, battery-powered instrumentation, and educational/prototyping boards where a large flash map and rich peripheral set are required. A key design consideration is supply voltage: the device operates across the industrial range, so choose clock frequency and BOD (brown-out detector) settings according to the rail used to guarantee margin across temperature. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

USD $1,78 Em estoque
ATMEGA644PA-MNR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644PA-MNR

ATMEGA644PA-MNR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA644PA-MNR is a high-performance 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and 32 general purpose I/O lines, delivered in a 44-pad VQFN (7x7 mm) exposed-pad package on tape and reel. An 8-bit AVR microcontroller is a single-chip processor based on the AVR enhanced RISC architecture, in which most of the 131 powerful instructions execute in a single clock cycle. This gives the ATmega family a throughput approaching 1 MIPS per MHz, allowing system designers to optimize power consumption versus processing speed. Within the embedded processing hierarchy, the ATmega644PA sits in the general-purpose flash MCU class alongside the ATmega164A/324A/1284 family members, all sharing a common core and peripheral set. Key features of the ATMEGA644PA-MNR include read-while-write Flash for reliable in-system self-programming, Microchip's picoPower technology for ultra-low sleep-mode consumption, an internal oscillator that removes the need for an external crystal in many designs, and a rich peripheral set with JTAG for on-chip debugging and boundary scan. The PA suffix denotes the picoPower, low-voltage grade supporting operation down to 1.8 V. Architecturally, the device combines 32 general purpose working registers directly connected to the ALU, allowing two independent registers to be accessed in one instruction, plus hardware multiplier and multiple sleep modes. In-system programmable Flash and support for ICSP via two I/O pins and reset (compatible with MPLAB SNAP and Atmel-ICE tools) simplify manufacturing and field updates. Typical applications include industrial control and automation nodes, sensor acquisition systems, battery-powered portable instruments, and embedded HVAC or building-control boards, where 64 KB of program memory and low active power per MHz are decisive. For design, note that the VQFN exposed pad should be soldered to a ground plane for thermal and signal integrity, and Mouser lists a 105C temperature grade variant so confirm the exact suffix grade against the datasheet. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

USD $1,80 Em estoque
ATMEGA644PA-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU

ATMEGA644PA-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip

The Microchip Technology ATMEGA644PA-MU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory (32K x 16), 2 KB EEPROM, 4 KB SRAM, and 32 general purpose I/O lines, housed in a 44-pin VQFN (7x7 mm) package and capable of up to 20 MHz operation (20 MIPS throughput). An 8-bit AVR microcontroller is a single-chip processor built around an advanced RISC core in which most instructions execute in a single clock cycle, yielding approximately 1 MIPS per MHz. Within the power management and embedded control hierarchy, the ATmega family sits as a general-purpose flash microcontroller that integrates program memory, data memory, timers, serial interfaces, and an ADC on one die, replacing multi-chip MCU solutions in cost- and power-sensitive systems. Key features of the ATMEGA644PA-MU include Microchip's picoPower technology for industry-leading low-power consumption, read-while-write Flash for self-programming, two programmable serial USARTs, a byte-oriented Two-Wire serial interface (I2C-compatible), an SPI serial interface, and three flexible timer/counters with compare modes and PWM. An 8-channel 10-bit ADC and a real-time counter (RTC) with a separate oscillator round out the peripheral set. The advanced RISC architecture provides 131 powerful instructions, fully static operation, 32 x 8 general purpose working registers, and an on-chip 2-cycle hardware multiplier. In-system programmable (ISP) Flash with high endurance non-volatile memory segments supports field firmware updates, while the enhanced power-save modes make the part well suited to battery-powered designs. Typical applications include industrial control and automation, sensor and data-logging nodes, consumer appliances, and battery-operated metering or monitoring products where 64 KB of program memory, rich peripherals, and low active/sleep current are required. A key design consideration: the picoPower ATMEGA644PA achieves its lowest sleep currents only when unused peripherals and clock sources are disabled, and the 44-VQFN exposed pad should be soldered to a ground plane for thermal and signal-integrity performance. This page synthesizes distributor availability, drop-in alternatives within the ATmega164A/324A/644A/1284 family, and practical design notes not found in the manufacturer datasheet. Pricing shown is estimated; verify current distributor pricing as of 2026-09-18 before ordering.

USD $3,78 Em estoque
ATMEGA644PA-PU - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip
ATMEGA644PA-PU

ATMEGA644PA-PU - 8-bit AVR MCU 20MHz 64KB Flash DIP-40 | Microchip

The Microchip Technology ATMEGA644PA-PU is an 8-bit AVR RISC picoPower microcontroller delivering 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and 20 MHz maximum clock speed in a 40-pin PDIP (0.600 inch, 15.24 mm) package with 32 general purpose I/O lines. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers and serial interfaces on one die. The ATmega family sits within the broader hierarchy of 8-bit microcontrollers under the AVR architecture, a category widely used in embedded systems, industrial control, and hobbyist electronics such as Arduino-compatible boards. Key features include 64 KB of self-programmable ISP Flash with read-while-write capability, an 8-channel 10-bit ADC, two USARTs for serial communication, a byte-oriented Two-Wire (I2C-compatible) interface, and three flexible timer/counters with compare modes and PWM outputs. The picoPower technology provides multiple sleep modes for battery-powered designs. Architecturally, the AVR core executes most instructions in a single clock cycle using 32 general purpose working registers, achieving throughput of up to 20 MIPS at 20 MHz. In-system programmability allows firmware updates without removing the chip from the PCB, and boot-code sections support self-programming for field upgrades. Typical applications include industrial automation controllers, sensor data loggers, motor control boards, and educational or prototyping platforms. The through-hole DIP-40 package makes this version especially popular for breadboard prototyping, repair of legacy equipment, and low-volume production where hand soldering is required. One design consideration: the DIP-40 package occupies significant board area compared to the 44-pin TQFP (ATMEGA644PA-AU) sibling, so high-density designs should evaluate surface-mount variants, while prototyping and serviceability favor the -PU. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-18.

USD $5,15 Em estoque
ATMEGA644PV-10MQ - 8-Bit AVR MCU 64KB Flash 10MHz | Microchip
ATMEGA644PV-10MQ

ATMEGA644PV-10MQ - 8-Bit AVR MCU 64KB Flash 10MHz | Microchip

The Microchip Technology ATMEGA644PV-10MQ is a low-power CMOS 8-bit AVR ATmega microcontroller with 64KB (32K x 16) ISP Flash, 4KB SRAM, and 2KB EEPROM, executing at up to 10MHz from a 1.8V to 5.5V supply, housed in a 44-pad VQFN (7x7 mm, exposed pad) package with extended temperature and Green/RoHS attributes. An 8-bit microcontroller is an integrated circuit that combines a processor core, memory, and peripherals on a single chip to perform dedicated control tasks. The ATmega644PV-10MQ belongs to the AVR enhanced RISC family within the broader hierarchy of microcontrollers under embedded processors. AVR cores execute most instructions in a single clock cycle, achieving throughput close to 1 MIPS per MHz, which lets designers trade clock speed for lower power consumption. Key features include in-system self-programmable Flash via SPI, On-chip Boot code support, picoPower technology for battery-friendly sleep currents, and two full-duplex USARTs (the P suffix denotes the dual-UART variant of the ATmega644 family). The wide 1.8V to 5.5V operating range supports both single-cell battery systems and 5V industrial rails without a regulator change. Architecturally, the device is manufactured in Atmel/Microchip high-density nonvolatile memory technology. The on-chip ISP Flash allows reprogramming in-system through the SPI serial interface, by a conventional programmer, or by boot code running on the AVR core, simplifying field upgrades. Typical applications include battery-powered sensor nodes, industrial control panels and HMI boards, and energy or utility metering where the wide supply range and picoPower sleep modes extend battery life. Design consideration: at 5.5V the maximum rated speed of 10MHz limits overclocking headroom, so verify timing margins if you migrate code from 20MHz ATmega644P variants. This page synthesizes distributor availability, drop-in alternatives, and design notes not found in the manufacturer datasheet.

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ATMEGA644PV-10MU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip
ATMEGA644PV-10MU

ATMEGA644PV-10MU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip

The Microchip Technology (Atmel) ATMEGA644PV-10MU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB of In-System Programmable (ISP) Flash memory, 2KB EEPROM, 4KB SRAM and a maximum operating frequency of 10 MHz, housed in a 44-pin VQFN (7x7 mm) exposed-pad package rated for -40C to +85C industrial operation. An 8-bit AVR microcontroller is a single-chip computer built around the AVR enhanced RISC architecture, in which most instructions execute in a single clock cycle. Within the semiconductor hierarchy, it belongs to the microcontroller (MCU) family under embedded processors, integrating CPU, program Flash, data SRAM, EEPROM and peripherals such as timers, USARTs and ADC on one die, eliminating external memory chips in typical embedded control designs. Key features include 64KB (32K x 16) self-programmable Flash with read-while-write support, 32 general purpose I/O lines, three flexible timers/counters with compare modes and PWM channels, two USARTs for serial communication, a byte-oriented 2-wire serial interface (TWI/I2C), an SPI serial port, and a 10-bit ADC. The picoPower (V) variant emphasizes low active and sleep current for battery-powered designs. The AVR core uses a Harvard architecture with 32 general purpose working registers directly connected to the ALU, allowing one-cycle execution of most instructions and delivering up to 10 MIPS throughput at the 10 MHz maximum clock. In-System Programming and self-programming support field firmware updates without removing the device from the PCB. Typical applications include industrial automation nodes, embedded sensor controllers, battery-powered instruments, and communication modules where the 1.8V-capable supply range, 10-bit ADC and dual USARTs fit low-power measurement and control systems. Design consideration: the picoPower ATmega644PV runs at reduced maximum frequency versus the 20 MHz ATmega644P; verify your clock plan and use the internal calibrated RC oscillator or an external crystal within the 10 MHz limit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $4,88 Em estoque
ATMEGA644PV-10PQ - 8-Bit AVR MCU 64KB Flash 10MHz | Microchip
ATMEGA644PV-10PQ

ATMEGA644PV-10PQ - 8-Bit AVR MCU 64KB Flash 10MHz | Microchip

The Microchip Technology ATMEGA644PV-10PQ is an 8-bit AVR ATmega microcontroller with 64KB (32K x 16) In-System Programmable Flash, 4KB SRAM, and a 10MHz maximum clock frequency, housed in a 40-pin PDIP (0.600 inch, 15.24mm) through-hole package. An 8-bit AVR microcontroller is a self-contained computer-on-a-chip belonging to the broader hierarchy of microcontroller units (MCUs), embedded processors, and integrated circuits. AVR devices use a Harvard architecture with a RISC instruction set, executing most instructions in a single clock cycle, which makes them efficient in both speed and code density. The ATmega family sits in the mainstream general-purpose tier, with program memory, SRAM, EEPROM, timers, ADC, and serial communication peripherals all integrated on the die. Key features of the ATMEGA644PV-10PQ include 64KB of self-programmable Flash with an on-chip boot loader section, 2KB of EEPROM for nonvolatile data storage, and 4KB of internal SRAM. The P-variant core adds a second hardware USART, giving designers two independent serial channels. Connectivity peripherals include I2C (TWI), SPI, and UART/USART interfaces. The V-grade device operates from a 1.8V supply, and an internal calibrated oscillator removes the need for an external crystal in many designs. Technically, the device is manufactured using a high-density nonvolatile memory process, and its on-chip ISP Flash can be reprogrammed in-system through the SPI serial interface, by a conventional programmer, or by an on-chip boot program running on the AVR core. This three-path update capability reduces field-update cost and supports remote firmware upgrades. Typical applications include industrial control and instrumentation, through-hole prototyping and hobbyist/embedded education boards, and battery-powered or low-voltage systems that benefit from the 1.8V V operating range. A key design consideration is that the PV grade is speed-limited to 10MHz at its low-voltage operating range; designs needing higher clock rates should evaluate the 20MHz ATMEGA644P-20PQ in the same 40-pin PDIP footprint. This page synthesizes distributor pricing context, drop-in alternatives, a full 40-pin pinout, and practical design notes not found in the manufacturer datasheet summary.

USD $4,98 Em estoque
ATMEGA644V-10AU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip
ATMEGA644V-10AU

ATMEGA644V-10AU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip

The Microchip (Atmel) ATMEGA644V-10AU is an 8-bit AVR ATmega microcontroller with 64 KB in-system programmable Flash, 2 KB EEPROM, 4 KB SRAM, 32 general-purpose I/O lines, and a maximum clock speed of 10 MHz, housed in a 44-pin TQFP (10x10 mm) surface-mount package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded systems hierarchy: transistor -> logic IC -> processor -> microcontroller -> full embedded system. The ATmega644 family is based on the AVR enhanced RISC architecture, which executes most instructions in a single clock cycle. Key features include 64 KB of self-programmable ISP Flash with read-while-write support, up to 10 MIPS throughput at 10 MHz, two USARTs for serial communication, three flexible timers/counters with compare modes and PWM, a 10-bit ADC, and byte-oriented Two-Wire Interface (I2C) plus SPI serial interfaces. The V-grade speed/voltage bin supports low-voltage operation, making it suitable for battery-powered designs. Architecturally, the AVR core uses 32 general-purpose working registers directly connected to the ALU, allowing one-cycle instruction execution and eliminating the bottleneck typical of accumulator-based 8-bit architectures. In-System Programmable Flash enables firmware updates on the assembled board via ICSP, supported by tools such as the MPLAB SNAP debugger. Typical applications include industrial automation nodes, battery-powered instrumentation, HVAC and building-control boards, and serial communication gateways that benefit from dual USARTs and low-voltage operation. Design consideration: at 10 MHz this device favors low-power, low-noise designs over compute-heavy workloads; if higher performance is required, pin-compatible 20 MHz P-grade variants in the same 44-TQFP footprint can be evaluated. This page synthesizes verified distributor pricing, drop-in family alternatives, design notes, and lifecycle information not consolidated on the manufacturer datasheet alone.

USD $6,88 Em estoque
ATMEGA644V-10PU - 8-bit AVR MCU 64KB Flash 10MHz DIP-40 | Microchip
ATMEGA644V-10PU

ATMEGA644V-10PU - 8-bit AVR MCU 64KB Flash 10MHz DIP-40 | Microchip

The Microchip Technology ATMEGA644V-10PU is an 8-bit AVR RISC microcontroller delivering 10 MHz maximum clock speed, 64 KB of In-System Programmable Flash (32K x 16), and 1.8 V to 5.5 V low-voltage operation, housed in a 40-pin PDIP package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip. The ATmega644V belongs to the AVR ATmega family of 8-bit microcontrollers, positioned above the ATmega48/88/168/328 line and below the ATmega1280/2560 megaAVR line in the power-management and embedded-control hierarchy. The AVR core executes most instructions in a single clock cycle using a Harvard architecture with 32 general-purpose working registers, achieving throughput close to 1 MIPS per MHz. Key features include 64 KB self-programmable Flash with read-while-write support, 2 KB EEPROM, 4 KB SRAM, and 32 general-purpose I/O lines. On-chip peripherals cover two USARTs, a byte-oriented TWI (I2C) interface, SPI, an 8-channel 10-bit ADC, a real-time counter, and three flexible timers/counters with compare modes and PWM. The low-voltage V-variant operates from 1.8 V to 5.5 V at up to 10 MHz, enabling battery-powered and energy-harvesting designs. Architecturally, the ATMEGA644V-10PU uses an enhanced RISC AVR core manufactured in a low-power CMOS process. JTAG (IEEE 1149.1) boundary scan, on-chip debug, and In-Circuit Serial Programming (ICSP) via RESET/VCC/GND and two I/O pins simplify development; the MPLAB SNAP and earlier AVR ISP tools program the device in-circuit. Typical applications include low-power battery-operated sensor nodes, industrial control panels, hobbyist and educational boards (such as Sanguino-class Arduino derivatives), and embedded instrumentation where a through-hole DIP-40 footprint simplifies prototyping and repair. One key design consideration: clock frequency is voltage-dependent; at VCC below 2.7 V the maximum safe clock is limited, so verify the frequency-versus-voltage curve in the Microchip datasheet before overclocking near the 1.8 V floor. This page synthesizes distributor pricing, pin-compatible ATmega family alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-09-18.

USD $5,93 Em estoque
ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA645-16AI

ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip ATMEGA645-16AI is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB ISP Flash, 4KB SRAM, 2KB EEPROM, an 8-channel 10-bit ADC, and a JTAG interface, packaged in a 64-pin TQFP (14x14 mm) rated for industrial temperatures from -40C to +85C. It delivers up to 16 MIPS throughput at 16 MHz and operates from 2.7V to 5.5V. A microcontroller of this class combines a processor core, program memory, data memory, and peripherals on a single chip, sitting at the device level of the semiconductor hierarchy: ATmega645 -> AVR 8-bit MCU -> microcontroller -> embedded processor. Such MCUs replace multi-chip CPU, RAM, and ROM solutions in cost-sensitive embedded designs where single-cycle instruction execution simplifies timing-critical code. Key features include the advanced AVR RISC architecture with 130 powerful instructions, most executing in a single clock cycle; 32 general-purpose working registers directly connected to the ALU; In-System Programmable (ISP) Flash for field firmware updates; and on-chip JTAG for boundary-scan debugging. The 10-bit ADC with 8 multiplexed channels supports sensor acquisition, while SPI, USART, and TWI (I2C) interfaces cover most communication needs. The AVR Harvard architecture fetches instructions and data over separate buses, enabling most instructions to complete in one 62.5 ns cycle at 16 MHz. Nested interrupt vectors, a two-cycle hardware multiplier, and sleep modes down to microamp-level idle currents round out the power-performance profile. Typical applications include industrial control panels, building automation and HVAC controllers, consumer appliances with LCD segments, and data-acquisition nodes using the integrated 10-bit ADC. Design tip: run the core at 5V when you need the full 16 MHz rating, since flash access time constrains low-voltage operation to lower clock speeds; decouple VCC with 0.1 uF per supply pin. This page adds distributor pricing tiers, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

USD $6,45 Em estoque
ATMEGA645-16AUR - 8-Bit AVR MCU 64KB 16MHz 64-TQFP | Microchip
ATMEGA645-16AUR

ATMEGA645-16AUR - 8-Bit AVR MCU 64KB 16MHz 64-TQFP | Microchip

The Microchip ATMEGA645-16AUR is an 8-bit AVR RISC microcontroller with 64 KB in-system-programmable Flash, 4 KB SRAM, 2 KB EEPROM, and an 8-channel 10-bit ADC, clocked at up to 16 MHz and delivered in a 64-pin TQFP (14 x 14 mm) package rated for the industrial 4.5 V to 5.5 V supply range. A microcontroller (MCU) integrates a processor core, memory, and peripherals on a single chip, forming the lowest level of the embedded-system hierarchy: MCU -> processor -> semiconductor -> integrated circuit. The AVR ATmega family uses an advanced RISC architecture with 130 mostly single-cycle instructions, delivering up to 16 MIPS at 16 MHz. Key features include 64 KB (32K x 16) self-programmable ISP Flash, a JTAG interface for on-chip debugging and boundary scan, 53 programmable I/O lines, an 8-channel 10-bit analog-to-digital converter, and two 8-bit plus one 16-bit timer architecture typical of the ATmega family. Boot loader support enables firmware reprogramming in the field via UART or other interfaces. Architecturally, the AVR core separates program and data buses (Harvard architecture), executing most instructions in one clock cycle. Peripherals typically include USART serial links, SPI and I2C (TWI) interfaces, timers with PWM outputs, and analog comparators, allowing a single device to handle sensing, control, and communication in mid-complexity embedded designs. Typical applications include industrial control and automation, embedded instrumentation and data loggers, and consumer appliance controllers where 64 KB of code space, robust I/O, and 5 V noise immunity are valued. The 5.5 V maximum supply suits direct connection to industrial 5 V buses. Design consideration: keep the AVCC pin within 300 mV of VCC and decouple all supply pins with 100 nF ceramics placed within 5 mm of the package; connect RESET with a 10 k pull-up for reliable ISP programming. This page synthesizes distributor pricing, drop-in alternatives, design notes, and AEO-optimized FAQs not found in the manufacturer datasheet.

USD $5,40 Em estoque
ATMEGA645-16MI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA645-16MI

ATMEGA645-16MI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip

The Microchip Technology ATMEGA645-16MI is an 8-bit AVR RISC microcontroller with 64KB of In-System Programmable Flash (32K x 16 organization), 4KB SRAM, and 2KB EEPROM, executing at up to 16MHz in a 64-pin QFN (9x9 mm) package. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 130 powerful instructions in a single clock cycle. In the system hierarchy, the ATmega645 sits in the ATmega family of flash-based MCUs, positioned above the ATmega325 and below the ATmega1281, and is a core building block of embedded power management and control systems. Key features include a 16MHz maximum core clock (16 MIPS throughput at 16MHz Dhrystone), 53 programmable I/O lines, an 8-channel 10-bit ADC, and an on-chip JTAG interface for boundary-scan and on-chip debugging. The device also integrates a segment LCD controller, making it distinct from the ATmega644 and other same-pin-count AVR parts. Boot-code self-programming enables in-system reprogramming over SPI, UART, or JTAG. Architecturally, the ATmega645 uses the advanced AVR RISC core with 32 general-purpose working registers directly connected to the ALU, allowing two independent registers to be accessed in one instruction executed in one clock cycle. Read-While-Write Flash capability allows code updates while the program is running. Low-power modes including Idle, Power-down, Power-save, and Standby reduce consumption for battery-powered designs. Typical applications include industrial control panels with LCD user interfaces, battery-powered metering, HVAC controllers, and consumer appliances that benefit from the integrated LCD driver and 10-bit ADC. Design consideration: the -16MI speed grade is rated for 16MHz across the full industrial temperature range, but analog ADC accuracy and Flash endurance figures degrade near the extremes, so verify operating margins at maximum ambient. This page synthesizes distributor stock data, drop-in alternative analysis, and practical design guidance not found in the manufacturer datasheet.

USD $3,92 Em estoque
ATMEGA645-16MU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA645-16MU

ATMEGA645-16MU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip

The Microchip Technology ATMEGA645-16MU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB of In-System Programmable Flash, 16MHz maximum clock frequency, and 2.7V to 5.5V operating voltage, housed in a 64-pin QFN (9x9 mm) surface-mount package. A microcontroller is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, ADCs, and communication interfaces. Within the embedded-systems hierarchy, the 8-bit ATmega family sits in the cost- and power-sensitive segment below 32-bit ARM MCUs, and the ATmega645 belongs to the megaAVR branch, which targets applications needing 32KB to 256KB of Flash with mature, well-documented peripherals. Key features include 130 powerful RISC instructions with mostly single-cycle execution, delivering 16 MIPS throughput at 16MHz; 64KB ISP Flash, 4KB SRAM, and 2KB EEPROM; 68 programmable I/O lines; and an 8-channel 10-bit ADC. An on-chip JTAG interface supports boundary-scan testing and on-chip debugging, which shortens development cycles on densely populated boards. Architecturally, the AVR core uses a Harvard structure with separate program and data buses, allowing one instruction to be fetched while another executes. The ATMEGA645-16MU is rated for the industrial temperature range and is offered in a GREEN, RoHS-conscious package; supply voltage tolerance of 2.7V to 5.5V allows direct operation from 3.3V or 5V rails, with full 16MHz speed specified for 4.5V to 5.5V operation. Typical applications include industrial control and automation nodes, consumer appliances and HVAC controllers, and battery-powered instrumentation where the 2.7V low-voltage operation and low-power idle/power-down modes extend battery life. The large I/O count suits keypad, display, and relay-matrix-heavy designs. A key design consideration is clock-versus-voltage derating: below 4.5V the safe maximum clock frequency decreases, so designs running at 3.3V should target 8MHz-class operation or use the V-graded speed variants. This page synthesizes distributor availability data, pin-compatible family alternatives, and practical design guidance not found on the manufacturer product page alone.

USD $4,65 Em estoque
ATMEGA645-16MUR - 8-bit AVR MCU 64KB 16MHz 64-QFN | Microchip
ATMEGA645-16MUR

ATMEGA645-16MUR - 8-bit AVR MCU 64KB 16MHz 64-QFN | Microchip

The Microchip Technology ATMEGA645-16MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB (32K x 16) In-System Programmable Flash, 4KB SRAM, and 2KB EEPROM, operating at up to 16 MHz and housed in a 64-pad QFN/MLF package measuring 9 x 9 mm. An AVR ATmega microcontroller is an 8-bit reduced-instruction-set (RISC) processor that executes most of its 130 instructions in a single clock cycle, placing it in the broader hierarchy of microcontrollers -> embedded processors -> integrated circuits. The AVR architecture achieves near 1 MIPS per MHz throughput, allowing engineers to either maximize performance or run slower clocks to cut power consumption, which is why the ATmega family dominates cost-sensitive embedded designs. Key features include 16 MIPS throughput at 16 MHz, an 8-channel 10-bit ADC for analog sensing, a JTAG interface for on-chip debugging and boundary scan, and 53 general-purpose I/O lines on this QFN variant. The device also integrates an LCD controller, making it one of the few ATmega parts with a built-in segment LCD driver, a differentiator against mainstream parts like the ATmega64A. Technically, the ATMEGA645-16MUR uses the enhanced AVR RISC core with 32 general-purpose working registers directly connected to the ALU, delivering single-cycle execution. The 64KB self-programmable Flash supports ISP (In-System Programming) and boot-loader based firmware updates, while the 2KB EEPROM retains calibration data through power cycles. Typical applications include industrial HMI panels with segment LCD displays, battery-powered metering products, building automation nodes, and consumer appliance controls, where the integrated LCD driver, ADC, and 5V tolerance reduce external component count. Design consideration: at 16 MHz the part requires a 4.5V to 5.5V supply; derating to the ATMEGA645V-8MUR grade permits 2.7V to 5.5V operation at 8 MHz if lower voltage rails are needed. This page synthesizes distributor availability data, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet.

USD $3,35 Em estoque
ATMEGA6450-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA6450-16AI

ATMEGA6450-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA6450-16AI is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB (32K x 16) of In-System Programmable Flash, 4KB of SRAM, 2KB of EEPROM, and a 16MHz maximum core clock, housed in a 100-pin TQFP (14x14 mm) package. An 8-bit AVR microcontroller is a single-chip processor built around the AVR advanced RISC architecture, in which most of the 130 powerful instructions execute in a single clock cycle. Within the power-management hierarchy of an embedded system, the MCU sits at the top of the control chain, integrating program memory, data memory, timers, serial interfaces, and analog peripherals on one die, eliminating external glue logic for many designs. Key features include the 130-instruction RISC core with 32 general-purpose working registers, 64KB self-programmable Flash with 32K x 16 organization, 2KB EEPROM for non-volatile parameter storage, and 4KB of internal SRAM. The device operates from a 5V supply in the industrial temperature range, and the -16AI speed grade confirms full 16MHz operation. In-System Programmability (ISP) allows firmware updates on the assembled PCB without removing the device. Technically, the Harvard-architecture AVR core fetches instructions and data over separate buses, achieving close to 1 MIPS per MHz. The Flash memory supports 10,000 write cycles, and the EEPROM supports 100,000 cycles, providing durable field-calibration storage. On-chip debug and programming access through the SPI interface simplifies both development and production programming. Typical applications include industrial control panels, instrumentation front ends, building automation nodes, and legacy AVR designs requiring high GPIO count in a 100-pin TQFP footprint. The large port count suits designs driving many LEDs, relays, or keypad matrices directly from the MCU. Design consideration: at 5V and 16MHz the device is near its speed-voltage corner, so verify supply integrity with local decoupling at each VCC/GND pair and observe the 100-TQFP thermal pad layout for heat spreading. This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $6,20 Em estoque
ATMEGA6450-16AU - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA6450-16AU

ATMEGA6450-16AU - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip

The Microchip Technology ATMEGA6450-16AU is a high-performance, low-power 8-bit AVR ATmega microcontroller delivering 16 MIPS at 16 MHz, with 64 KB of In-System Programmable Flash, 2 KB of EEPROM, and 4 KB of internal SRAM, housed in a 100-pin TQFP (14x14 mm) package. The -16A speed grade supports operation from 4.5 V to 5.5 V. An AVR ATmega microcontroller is a reduced-instruction-set (RISC) 8-bit MCU built on the AVR advanced RISC architecture. Within the power-management hierarchy, an MCU integrates a processor core, program memory, data memory, peripherals, and clock generation into a single integrated circuit, replacing discrete logic and serving as the primary control element in embedded systems. Key features include the advanced RISC core with 130 powerful instructions, most executed in a single clock cycle; 64 KB of self-programmable Flash organized as 32K x 16 with the In-System Programmability (ISP) and boot-code capability that made the AVR family an industry standard; and a rich peripheral set including JTAG for on-chip debugging, an 8-channel/10-channel 10-bit ADC, and serial interfaces (USART, SPI, TWI/I2C). The MegaCore open-source Arduino support package also targets this family directly. Technical depth: the AVR Harvard architecture separates program and data buses, enabling most instructions to complete in one clock cycle and yielding roughly ten times the throughput per megahertz of conventional CISC 8-bit MCUs. The 130-instruction set is largely single-cycle, with eight general-purpose working registers directly connected to the ALU. In-System Programmable Flash allows firmware updates on the final product via the SPI interface, and the boot section supports self-programming for field upgrades. Typical applications include industrial automation controllers, building automation and LCD-based operator interfaces, instrumentation front ends, and general-purpose embedded control where 64 KB of code density, a 16 MHz clock, and a high I/O-count 100-pin footprint are required. Designers choose this part when the smaller ATmega3250 (32 KB) is insufficient for application code. Design consideration: the -16AU grade is specified for 4.5 V to 5.5 V supply; designs running at 3.3 V must select an -8A (2.7-5.5 V) grade at a lower clock, so confirm rail voltage before layout. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

USD $7,85 Em estoque
ATMEGA6450-16AUR - 8-Bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA6450-16AUR

ATMEGA6450-16AUR - 8-Bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA6450-16AUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB (32K x 16) in-system programmable Flash, 4KB SRAM, 2KB EEPROM, and 16MHz operation at 16 MIPS throughput, housed in a 100-pin TQFP (14x14 mm) surface-mount package. The AUR suffix denotes the green, RoHS-compliant tape-and-reel industrial option rated for -40C to +85C operation. An 8-bit microcontroller integrates a processor core, program memory, data memory, and peripherals on a single silicon die. Within the power-management-and-embedded hierarchy, the AVR ATmega family sits in the 8-bit MCU class above entry-level 6-pin parts and below 32-bit ARM Cortex-M devices, offering deterministic single-cycle instruction execution for real-time control. Key features include the advanced AVR RISC architecture with 130 powerful instructions, most executed in a single clock cycle; an 8-channel 10-bit analog-to-digital converter; a JTAG interface for on-chip debugging and boundary scan; and 68 programmable I/O lines across multiple GPIO ports. Up to 16 MIPS at 16 MHz gives the performance headroom typically expected from much larger processors while retaining 5V-tolerant I/O favored in industrial designs. Architecturally, the device uses a Harvard structure with separate program and data buses, permitting single-cycle access to general-purpose working registers. In-system programmable Flash allows firmware updates over SPI after assembly, while the EEPROM retains calibration data through power cycles. Supply voltage spans 2.7V to 5.5V, with full 16MHz speed specified at 4.5V to 5.5V per the operating-ratings table. Typical applications include industrial automation controllers, motor-control and HVAC boards, building access panels, and LCD-equipped instrumentation. The high pin count and broad peripheral set suit designs that need many I/O lines plus analog sensing in one MCU. Design consideration: at 16MHz, full-speed operation requires a 4.5V to 5.5V supply, so 3.3V systems must select the lower-speed 8MHz speed grade instead. This page synthesizes verified distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not consolidated in the manufacturer datasheet.

USD $5,66 Em estoque
ATMEGA6450A-AU - 8-bit AVR MCU 64KB 20MHz TQFP-100 | Microchip
ATMEGA6450A-AU

ATMEGA6450A-AU - 8-bit AVR MCU 64KB 20MHz TQFP-100 | Microchip

The Microchip Technology ATMEGA6450A-AU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 2 KB EEPROM, 4 KB SRAM and a 20 MHz maximum clock frequency, housed in a 100-pin TQFP (14x14 mm) package. An 8-bit AVR ATmega microcontroller belongs to the broader product hierarchy of embedded microcontroller units (MCU), a class of single-chip computers integrating a processor core, program memory, data memory, timers, communication peripherals and general-purpose I/O on one die. The AVR architecture uses Harvard memory mapping with a two-stage pipeline: the ATmega6450A executes 130 powerful instructions, most of which complete in a single clock cycle, delivering up to 20 MIPS throughput at 20 MHz. Key features include in-system self-programmable Flash with read-while-write capability, a JTAG interface for boundary-scan, on-chip debugging and programming, three flexible 16-bit timer/counters with compare modes, an internal RC oscillator, and 54 general-purpose I/O lines (69 in larger packages of the family). The core operates from a 5 V nominal supply (2.5 V, 3.3 V and 5 V operating points are recognized for the ATmega6450 family), suiting industrial noise-margin designs. Architecturally, the ATmega6450A combines the AVR enhanced RISC core with 32 general-purpose working registers directly connected to the arithmetic logic unit, allowing one-cycle execution of most instructions. The device also integrates an 8-channel 10-bit ADC, analog comparator, USART serial ports, SPI and two-wire (I2C-compatible) interfaces for full system connectivity. Typical applications include industrial control panels and HMI front ends, building automation and HVAC controllers, and instrumentation that benefits from the LCD drive capability of the ATmega6450 family and the large 100-pin TQFP pin count. Design consideration: at 20 MHz and 5 V, ensure the supply is decoupled with 100 nF ceramics at multiple VCC/GND pin pairs of the TQFP-100, and verify the brown-out detector threshold matches your 5 V regulator dropout to prevent Flash corruption during power dips. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

USD $5,95 Em estoque
ATMEGA6450A-AUR - 8-Bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA6450A-AUR

ATMEGA6450A-AUR - 8-Bit AVR MCU 20MHz 64KB Flash | Microchip

The Microchip Technology (Atmel) ATMEGA6450A-AUR is an 8-bit AVR RISC microcontroller with 64KB of In-System Programmable Flash, 4KB SRAM, 2KB EEPROM, 68 programmable I/O lines, and a 20MHz maximum clock frequency, housed in a 100-pin TQFP (14x14 mm) package delivered in Tape & Reel. An 8-bit AVR microcontroller is a reduced-instruction-set (RISC) single-chip computer that executes most instructions in a single clock cycle. Within the power-management and embedded-control hierarchy, an MCU integrates a processor core, program Flash, data SRAM, nonvolatile EEPROM, timers, serial interfaces, and an ADC on one die, replacing multi-chip board-level logic. The AVR ATmega family is one of the most widely deployed 8-bit MCU architectures, also known through the Arduino ecosystem. Key features include the advanced RISC architecture with 130 powerful instructions, most executing in a single cycle, delivering up to 16 MIPS at 16 MHz (20 MIPS at 20 MHz). The device provides an 8-channel 10-bit ADC, a JTAG interface for on-chip debugging and boundary scan, and In-System Programmable (ISP) Flash allowing firmware updates on the assembled PCB. The ATmega6450A core achieves near-1 MIPS/MHz efficiency through a Harvard architecture with separate instruction and data buses, single-cycle ALU operations, and fast register file access across 32 general-purpose working registers. Typical applications include industrial control panels with many I/O points, LCD-equipped instruments and metering products, building automation nodes, and legacy AVR designs requiring 64KB code density in a large-pin-count TQFP footprint. When designing with this device, verify the operating voltage range of 2.7V to 5.5V against your clock frequency choice, as maximum safe frequency derates at lower supply voltages. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $4,65 Em estoque
ATMEGA6450P-AU - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA6450P-AU

ATMEGA6450P-AU - 8-bit AVR MCU 64KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA6450P-AU is a high-performance picoPower 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 2 KB EEPROM, and 4 KB SRAM, executing at up to 20 MHz from a 100-pin TQFP (14x14 mm) package. An 8-bit AVR ATmega microcontroller is a Harvard-architecture RISC processor that connects 32 general-purpose working registers directly to the ALU, allowing most instructions to execute in a single clock cycle. Within the power-management hierarchy, it integrates flash program memory, SRAM, EEPROM, timers, communication peripherals, and analog functions into a single chip, replacing multi-chip solutions in embedded systems. Key features include 130 powerful instructions with mostly single-cycle execution, read-while-write flash capability, 54/69 general-purpose I/O lines, and a JTAG interface for boundary-scan and on-chip debugging. The picoPower technology delivers very low power consumption in sleep modes, important for battery-powered designs. Technical depth: the AVR core achieves throughputs up to 10x faster than conventional CISC microcontrollers at equivalent clock rates. The device provides three flexible timer/counters with compare modes, internal and external interrupt sources, and serial peripherals including USART, SPI, and two-wire interface (per the ATmega6450P family datasheet summary). Typical applications include industrial control panels with keypad and LCD interfaces, building automation and HVAC controllers, and instrumentation front ends that leverage the large GPIO count of the 100-pin TQFP package. Design consideration: verify the maximum clock rating against supply voltage - higher frequencies require higher VCC, so a design targeting 20 MHz operation must run at the upper portion of the 2.7V to 5.5V range. This page synthesizes distributor pricing, drop-in alternatives within the ATmega 100-pin family, and practical design notes not found in the manufacturer datasheet.

USD $5,90 Em estoque