Microcontrôleurs

ATMEGA1281V-8MUR

ATMEGA1281V-8MUR - 8-bit AVR MCU 128KB Flash 8MHz | Microchip

The Microchip Technology ATMEGA1281V-8MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB ISP flash memory, 8KB SRAM, and 4KB EEPROM, executing at up to 8 MHz from a 1.8V to 5.5V supply in a 64-pin QFN (9x9 mm, MLF) exposed-pad package. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in which most of its instructions execute in a single clock cycle. Within the power-management hierarchy, an MCU of this class combines the CPU, program memory, data memory, timers, serial interfaces and analog peripherals on one die, replacing multi-chip solutions in embedded control systems. The ATmega family sits between the small ATtiny and the largest ATmega2560-class devices. Key features include 133 powerful instructions (most single-cycle), 32 general-purpose working registers, four flexible USARTs, a byte-oriented 2-wire (I2C-compatible) interface, a master/slave SPI interface, and six flexible timer/counters with compare modes and PWM. An 8/16-channel 10-bit ADC, programmable watchdog timer with separate on-chip oscillator, on-chip analog comparator, and interrupt and wake-up on pin change round out the peripheral set. Technically, the advanced RISC core achieves close to 1 MIPS per MHz throughput, so the 8 MHz V-grade device delivers roughly 8 MIPS while allowing operation down to 1.8V for battery-powered designs. The 128KB flash supports ISP (In-System Programming) via SPI, and JTAG-based on-chip debugging uses two device I/O pins plus reset, as described on the Microchip ATmega1281 product page. Typical applications include industrial automation controllers, sensor data loggers, HVAC and building control, and battery-powered instrumentation where the 1.8V minimum supply and rich peripheral set (4 USARTs, 10-bit ADC) reduce external component count. When designing, remember that the V speed grade limits operation to 8 MHz across the full 1.8V to 5.5V range; above 8 MHz at 5V, the 16 MHz grade (ATmega1281-16) is required instead. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $4,02 En stock

ATMEGA1284-AUR

ATMEGA1284-AUR - 8-Bit AVR MCU 128KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA1284-AUR is an 8-bit AVR RISC microcontroller with 128 KB ISP flash, 16 KB SRAM, 4 KB EEPROM, and 20 MHz maximum clock speed, housed in a 44-pin TQFP (10x10 mm) package supplied on tape and reel. It delivers up to 20 MIPS throughput at 20 MHz and operates from 1.8 V to 5.5 V. An AVR microcontroller is a Harvard-architecture 8-bit RISC device that executes most instructions in a single clock cycle, sitting in the hierarchy: AVR MCU -> 8-bit microcontroller -> microcontroller unit (MCU) -> embedded processor -> semiconductor IC. The ATmega family is the classic general-purpose AVR line, widely used where deterministic timing, low power, and 5 V-tolerant I/O matter more than raw compute. The ATMEGA1284-AUR integrates 32 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented two-wire serial interface, an 8-channel 10-bit ADC, and a programmable watchdog timer with internal oscillator. picoPower technology keeps active and idle current low for battery-powered designs. Architecturally, the device uses 131 powerful instructions with fully static operation down to 0 Hz, enabling sleep modes that retain SRAM contents. The 128 KB flash supports read-while-write, allowing bootloader-based field firmware updates without an external programmer. The 16 KB SRAM is unusually large for an 8-bit MCU, which suits buffering-heavy applications such as protocol gateways and data loggers. Typical applications include industrial control panels, home automation gateways, battery-powered sensor nodes, motor control front-ends, and legacy 5 V system upgrades. The 44-pin TQFP footprint is shared with the ATmega164/324/644 family, enabling code and PCB reuse across memory sizes. When designing with this device, decouple every VCC pin with a 100 nF ceramic capacitor placed close to the pin, and keep the AREF pin bypassed with 100 nF plus a 10 uF bulk capacitor for ADC accuracy. The reset pin requires an external pull-up and must not be left floating. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing and layout decisions.

USD $4,61 En stock

ATMEGA1284-MUR

ATMEGA1284-MUR - 8-bit AVR MCU, 128KB Flash, 20MHz | Microchip

The Microchip Technology ATMEGA1284-MUR is a high-performance, low-power 8-bit AVR ATmega microcontroller with 128KB ISP flash memory, 16KB SRAM, and 4KB EEPROM, executing up to 20 MIPS at a 20MHz clock in a 44-pin VQFN (7x7 mm) package with exposed pad. An 8-bit AVR microcontroller is a single-chip computer built on the AVR enhanced RISC architecture, in which most of its instructions execute in a single clock cycle to deliver throughput approaching one MIPS per megahertz. Within the power-management and embedded-processing hierarchy, the ATmega family sits in the broad microcontroller (MCU) class, alongside competitors such as the PIC, STM8, and 8051 cores. The ATMEGA1284-MUR belongs to the ATmega164A/PA/324A/PA/644A/PA/1284/P family documented in the shared Microchip (Atmel) datasheet. Key features include the 128KB self-programmable flash with read-while-write capability, 16KB of internal SRAM (the largest in the ATmega 44-pin family), 4KB EEPROM for non-volatile parameter storage, and 32 general-purpose I/O lines with 32 general-purpose working registers. Peripherals comprise two flexible USARTs, an SPI interface, a two-wire (I2C) interface, an 8-channel 10-bit ADC, a real-time counter, and three timer/counters with compare modes and PWM. Technically, the device implements 133 powerful instructions, most executed in single clock cycle, with optional Harvard-architecture code and data buses. Operating voltage covers 2.5V, 3.3V, and 5V systems (per distributor parametric data), allowing direct interfacing with 5V industrial logic or battery-friendly 3.3V designs. ISP and parallel programming plus boot-section self-programming enable field firmware updates without removing the chip from the PCB. Typical applications include industrial control and automation nodes, embedded systems requiring large SRAM buffers such as graphic LCD controllers and Ethernet-attached sensors, and hobbyist or educational platforms - the MightyCore Arduino hardware package explicitly supports the ATmega1284. The 44-VQFN footprint suits compact, two-layer and four-layer industrial PCBs. When designing with this device, place a 100nF ceramic decoupling capacitor at each VCC/AVCC pin pair close to the package, and route the exposed pad to a solid ground plane for thermal and EMC performance. Remember that the ADC reference and AVCC supply should be filtered separately from digital VCC for best analog accuracy. This page synthesizes distributor pricing (LCSC from $2.2196), drop-in alternatives within the ATmega 44-pin family, pinout guidance, and practical design notes not consolidated on the manufacturer datasheet alone. Pricing references are as of 2026-09-15.

USD $1,72 En stock

ATMEGA1284-PU

ATMEGA1284-PU - 8-bit AVR MCU 128KB Flash 20MHz PDIP-40 | Microchip

The Microchip Technology ATMEGA1284-PU is an 8-bit AVR ATmega microcontroller IC delivering 20 MHz maximum clock speed, 128KB (64K x 16) in-system programmable Flash, and 16KB SRAM, housed in a 40-pin PDIP (PLASTIC DUAL IN-LINE) package. An 8-bit AVR microcontroller is a complete computer-on-a-chip based on the AVR enhanced RISC architecture, in which most of the 133 powerful instructions execute in a single clock cycle. Combined with 32 general-purpose working registers, this architecture achieves CPU throughput approaching one million instructions per second (MIPS) per MHz, placing the ATmega family within the broader hierarchy of microcontrollers -> embedded processors -> integrated circuits, and making it a classic choice for through-hole, hobbyist, and industrial control designs. Key features include 128KB of self-programmable Flash with read-while-write capability, 4KB of on-chip EEPROM, 16KB of SRAM (the largest SRAM of any standard ATmega in this family), 32 general-purpose I/O lines, and an operating voltage range of 2.5V to 5.5V across the speed grades, allowing operation from a 5V industrial bus or a 3.3V battery rail. On-chip peripherals include an 8-channel 10-bit ADC, two 8-bit and one 16-bit timers with PWM, a real-time counter, two USARTs, SPI, two-wire interface (I2C), analog comparator, watchdog timer, and an internal calibrated RC oscillator. JTAG (Port C) provides on-chip debugging and boundary-scan, and ISP programming is supported through the SPI port. Typical applications include stand-alone industrial controllers, embedded instrumentation, retro-computing and Arduino-compatible builds (fully supported by the MightyCore Arduino core), motor and LED control, and test equipment where the through-hole DIP-40 package simplifies prototyping, socketing, and field replacement. Design consideration: for full 20 MHz operation, use the 5V (2.7V-5.5V) speed grade; the maximum safe frequency scales down at lower supply voltages. Place 100 nF decoupling capacitors directly across the VCC/GND pin pairs. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

USD $6,21 En stock

ATMEGA1284P-AU

ATMEGA1284P-AU - 8-bit AVR MCU 128KB Flash 20MHz TQFP-44

The Microchip ATMEGA1284P-AU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 128 KB of in-system programmable Flash with read-while-write capability, 4 KB EEPROM, and 16 KB SRAM, housed in a 44-pin TQFP package (AU suffix). It integrates 32 general-purpose I/O lines, 32 general-purpose working registers, and a rich peripheral set including two USARTs, an SPI, a TWI (I2C) interface, a 10-bit ADC, six PWM channels, and a real-time counter with separate oscillator. An 8-bit AVR microcontroller is a single-chip computer built around the AVR enhanced RISC architecture, executing most instructions in a single clock cycle to deliver throughputs approaching 1 MIPS per MHz. AVR microcontrollers sit within the broader hierarchy: 8-bit MCU -> microcontroller unit -> embedded processor -> semiconductor IC. They are widely used in hobbyist (Arduino), industrial, and consumer applications because the architecture is deterministic, low-power, and supported by a mature GCC toolchain (avr-gcc) and Atmel/Microchip Studio IDE. Key features of the ATMEGA1284P-AU include 20 MHz maximum operating frequency, 1.8V-5.5V wide operating voltage, six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) with as little as 100 nA current draw at 1.8V, and QTouch library support for capacitive touch sensing. The advanced RISC core delivers 135 powerful instructions with most executing in one clock cycle. The device supports In-System Programming (ISP) via SPI and self-programming via the boot block. The peripheral set includes two 8-bit timer/counters and two 16-bit timer/counters with separate prescalers and compare modes, an 8-channel 10-bit ADC, an analog comparator, a programmable watchdog timer with on-chip oscillator, and an interrupt controller with 31 vectored interrupts. The JTAG interface (IEEE 1149.1 compliant) enables on-chip debug. Typical applications include industrial control systems, home automation gateways, sensor data loggers, automotive body and aftermarket modules, USB-to-UART bridges, hobbyist Arduino-compatible boards (MightyCore and bobuino variants), and low-power wireless sensor nodes. The 32 GPIO count combined with two hardware serial ports makes it a strong upgrade path for designs that outgrow the ATmega328P-based Arduino Uno. When designing with this device, allocate PCB area for the 44-pin TQFP land pattern and ensure the decoupling network (100 nF plus 10 uF bulk) is placed within 5 mm of the AVCC and VCC pins. Programmers must apply the correct fuse settings: the default internal RC oscillator at 8 MHz may be replaced by an external crystal for time-critical UART or USB applications. This page synthesizes distributor pricing, drop-in alternatives from the ATmega AVR family, and practical design notes not found in the standalone Atmel datasheet.

USD $4,65 En stock

ATMEGA1284P-MU

ATMEGA1284P-MU - 128KB Flash 8-Bit AVR MCU 20MHz | Microchip

The Microchip ATMEGA1284P-MU is an 8-bit AVR RISC microcontroller with 128KB (64K x 16) ISP FLASH memory, 4KB EEPROM, 16KB SRAM, and 32 general-purpose I/O lines, housed in a 44-pin VQFN (7x7 mm) package with exposed pad, executing up to 20 MIPS at 20 MHz. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in the broader microcontroller (MCU) hierarchy: MCU -> embedded processor -> semiconductor IC. AVR devices achieve throughputs approaching 1 MIPS per MHz by executing most powerful instructions in a single clock cycle, which lets designers run lower clock speeds, reduce EMI, and cut power consumption compared with CISC 8-bit alternatives. Key features include 128KB of In-System Programmable (ISP) FLASH with Read-While-Write support, the largest SRAM (16KB) in the megaAVR 44-pin family, and picoPower technology for low-power battery designs. Peripherals comprise a Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, two USARTs, a byte-oriented 2-wire interface (TWI/I2C), SPI, an 8-channel 10-bit ADC, and a programmable Watchdog Timer. Technically, the ATmega1284P uses the Advanced RISC AVR core with 32 general-purpose working registers directly connected to the ALU, giving single-cycle execution. In-system programming via SPI and self-programming boot support simplify field firmware updates without removing the device from the PCB. Typical applications include industrial automation and sensor acquisition nodes, motor and LED control systems, battery-powered instruments, and hobby/embedded systems such as Arduino-compatible boards via the MightyCore hardware package. A key design consideration: the 44-VQFN (MU) package requires an exposed-pad ground connection on the PCB land pattern for reliable grounding and thermal dissipation, and the supply range and clock configuration must be matched to BOD settings for safe flash writes. This page synthesizes distributor availability, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet. Pricing shown is estimated as of 2026-09-16.

USD $4,10 En stock

ATMEGA1284P-MUR

ATMEGA1284P-MUR - 8-bit AVR MCU 20MHz 128KB Flash | Microchip

The Microchip Technology ATMEGA1284P-MUR is an 8-bit AVR RISC microcontroller with 128 KB In-System Programmable Flash, 16 KB SRAM, and 4 KB EEPROM, running at up to 20 MHz (up to 20 MIPS throughput) from a 2.7 V to 5.5 V supply in a 44-pin VQFN (7x7 mm) surface-mount package with exposed pad. An 8-bit microcontroller is an integrated circuit that executes program instructions and controls peripherals using an 8-bit-wide data path. The AVR family from Atmel (now Microchip) uses an enhanced RISC architecture in which most instructions execute in a single clock cycle, placing the ATmega1284P in the hierarchy: microcontroller -> 8-bit MCU -> AVR ATmega family -> embedded processing and power management of a complete system on a single chip. Key features include 128 KB of self-programmable Flash with Read-While-Write support, 131 powerful instructions most of which execute in one cycle, 32 x 8 general-purpose working registers, and an on-chip 2-cycle hardware multiplier. The PicoPower-qualified design delivers low active and sleep-mode currents, making the picoPower P suffix meaningful for battery-powered designs. The peripheral set comprises three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface (TWI/I2C), an SPI serial port, an 8-channel 10-bit ADC, a real-time counter (RTC), and 32 general-purpose I/O lines. In-system programming (ISP) and JTAG debugging are supported through the dedicated pins. Typical applications include industrial control and automation nodes, embedded sensing and data loggers, and consumer or IoT devices that need large program memory (128 KB Flash) and generous RAM (16 KB SRAM) without moving to a 32-bit platform. When designing with this device, decouple VCC and AVCC separately with 0.1 uF ceramic capacitors close to the pins, and plan Flash self-programming (Read-While-Write) if bootloaders are used. This page synthesizes distributor listings, drop-in family alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet.

Devis En stock

ATMEGA1284P-PU

ATMEGA1284P-PU - 128KB AVR MCU 20MHz 40-PDIP | Microchip

The Microchip Technology ATMEGA1284P-PU is an 8-bit AVR RISC microcontroller with 128 KB ISP Flash memory, 16 KB SRAM, and 4 KB EEPROM, running at up to 20 MHz and housed in a 40-pin PDIP through-hole package. It operates from 1.8 V to 5.5 V and delivers near 1 MIPS per MHz throughput. An AVR ATmega microcontroller is a Harvard-architecture 8-bit 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). It integrates program Flash, data SRAM, EEPROM, timers, USARTs, and ADC on one die, making it a complete embedded control system in a single through-hole or SMD package. Key differentiating features include the largest SRAM in its class at 16 KB, dual USARTs for two independent serial links, three flexible timer/counters with compare modes and PWM outputs, an 8-channel 10-bit ADC, and a byte-oriented Two-Wire Interface (TWI/I2C). The P suffix denotes picoPower technology for low active and sleep current, important for battery-powered designs. Architecturally, the ATmega1284P pairs its enhanced RISC core with 32 general-purpose working registers, all directly connected to the ALU, eliminating intermediate register transfers. Read-While-Write Flash allows self-programming and bootloader firmware updates. The real-time counter with separate oscillator supports RTC clocking from a 32.768 kHz crystal. Typical applications include 3D printer controller boards (notably the RepRap/Sanguinololu ecosystem), hobbyist and educational Arduino-compatible builds via MightyCore, and legacy industrial control retrofits where the through-hole DIP-40 footprint is required for repairability and socketed replacement. When designing with this part, note that Flash self-write timing and brown-out reset settings must be configured via fuse bits, and at 20 MHz a 5 V supply is required per the datasheet speed-grade table. This page synthesizes verified distributor pricing, drop-in family alternatives, complete 40-pin pinout data, and practical design notes not consolidated in the manufacturer datasheet.

USD $6,05 En stock

ATMEGA128A-AN

ATMEGA128A-AN - 8-bit AVR MCU 128KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA128A-AN is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB In-System Programmable Flash (read-while-write), 4KB EEPROM, 4KB SRAM, 53 general-purpose I/O lines and a 16MHz maximum clock, housed in a 64-pin TQFP package rated to 105C. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power-management hierarchy, MCUs such as the ATmega128A integrate CPU, program memory, data memory, timers and peripherals on one die, replacing multi-chip solutions in embedded control systems. The ATmega128A belongs to the AVR ATmega family and the broader microcontroller unit (MCU) category. Key features include 135 powerful RISC instructions, 32 general-purpose working registers, four flexible Timer/Counters with compare modes and PWM, a Real Time Counter, and 2 USARTs. Per the Microchip datasheet summary (Atmel-8151S), the device also provides one byte-oriented Two-Wire Interface (I2C), SPI, an 8-channel 10-bit ADC, and JTAG boundary-scan and on-chip debugging. Architecturally, the AVR core uses single-cycle instruction execution with a deep pipeline, achieving near-1 MIPS per MHz throughput. Read-while-write Flash allows code updates during operation. The improved manufacturing process of the A-variant delivers significantly lower power consumption than the original ATmega128. Typical applications include legacy industrial control upgrade, embedded instrumentation, motor-control front ends, and building automation nodes. Its 100% pin compatibility with ATmega103 and ATmega128 makes it ideal for PCB redesign-free refreshes. Design consideration: at 16MHz and 5V, keep decoupling close to all VCC pins and observe XTAL1/XTAL2 layout; use the Migration application note AVR525 when replacing ATmega128. This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in alternatives, a full 64-pin pinout table, and practical design notes.

USD $1,95 En stock

ATMEGA128A-ANR

ATMEGA128A-ANR - 8-bit AVR MCU 128KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA128A-ANR is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB flash, 16MHz maximum clock speed, and 53 general-purpose I/O lines, housed in a 64-pin TQFP (14x14 mm) package. An 8-bit AVR microcontroller is a single-chip processor based on the AVR enhanced RISC architecture, in which most instructions execute in a single clock cycle, delivering throughput close to 1 MIPS per MHz. MCUs of this class sit at the core of embedded systems, combining processor, non-volatile program memory, SRAM data memory, EEPROM, timers, communication peripherals, and analog-to-digital conversion in one package within the broader power-management and control hierarchy of a system. Key differentiating features of the ATMEGA128A include read-while-write flash capability for in-system self-programming, 4KB of EEPROM for data retention, 4KB of internal SRAM, 32 general-purpose working registers, a real-time counter, four flexible timer/counters with compare modes and PWM, and two USARTs for serial communication. The AVR architecture executes 135 powerful instructions, most in a single clock cycle, giving it strong code density and deterministic real-time behavior. Technically, the ATMEGA128A is fabricated in a low-power CMOS process and provides a byte-addressable external memory interface (ports PA through PC serve as AD0-AD15 with WR/RD/ALE control), an 8-channel 10-bit ADC, byte-oriented Two-Wire Interface (I2C-compatible), SPI, and a JTAG interface for on-chip debugging and boundary scan. It is 100% pin compatible with the ATmega103 and can replace it on existing PCBs using the M103C compatibility fuse. Typical applications include industrial automation and control panels, building and HVAC controllers, instrumentation and data loggers, motor control, and legacy ATmega103/ATmega128 designs requiring a second source or extended availability. The large 128KB flash accommodates substantial firmware including protocol stacks and HMI code. A key design consideration: the -ANR suffix denotes the TQFP 14x14 mm package with tape-and-reel delivery; verify operating voltage range against clock frequency, as maximum rated speed drops at lower VCC in the AVR family. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

USD $7,96 En stock

ATMEGA128A-AU

ATMEGA128A-AU - 8-bit AVR MCU 128KB Flash 16MHz TQFP-64 | Microchip

The Microchip Technology ATMEGA128A-AU is a high-performance, low-power 8-bit AVR RISC microcontroller with 128 KB of In-System Programmable Flash, 4 KB EEPROM, 4 KB SRAM and 53 general-purpose I/O lines, clocked at up to 16 MHz in a 64-pin TQFP (14x14 mm) surface-mount package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory and peripherals such as timers, serial interfaces and ADCs. Within the power-management and embedded-system hierarchy, the ATmega MCU family sits in the general-purpose embedded controller class, executing powerful instructions in a single clock cycle to deliver throughputs close to 1 MIPS per MHz. Key differentiating features include the AVR enhanced RISC architecture with 133 instructions (most single-cycle) and 32 general-purpose working registers, read-while-write Flash for self-programming, a real-time counter (RTC), four flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface (TWI/I2C), an SPI serial port, and an 8-channel 10-bit ADC with optional differential inputs. JTAG boundary-scan and on-chip debug simplify production testing. The core operates from 2.7 V to 5.5 V. The AVR Harvard architecture achieves deterministic single-cycle execution, and the ATmega128A is fabricated on an improved process relative to the original ATmega128, giving significantly lower power consumption. Power-saving idle, ADC noise reduction and power-down modes suit battery-operated designs. Typical applications include legacy industrial control upgrades, building automation and HVAC controllers, instrumentation and data loggers, and hobby/education boards where a pin-compatible replacement for the classic ATmega128 or ATmega103 is required without PCB redesign. Design consideration: maximum clock frequency is supply-voltage dependent - verify the 16 MHz rating is used only at the upper supply range, and decouple AVCC/AREF carefully for ADC accuracy. This page synthesizes distributor pricing tiers, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet summary.

USD $4,30 En stock

ATMEGA128A-AUR

ATMEGA128A-AUR - 8-Bit AVR MCU 128KB Flash 16MHz TQFP-64 | Microchip

The Microchip Technology ATMEGA128A-AUR is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 128KB of in-system programmable flash memory with read-while-write capability, 4KB of EEPROM, 4KB of SRAM, and 53 general-purpose I/O lines, housed in a 64-pin TQFP (14x14 mm) surface-mount package rated for the industrial temperature range. An 8-bit microcontroller (MCU) is a self-contained computing device that integrates a processor core, memory, and programmable peripherals on a single silicon die. The ATmega128A belongs to the AVR family of microcontrollers, positioned within the broader hierarchy of embedded processors under the power-management and control-system category. AVR MCUs execute powerful instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz, allowing system designers to optimize power consumption versus processing speed. Key features include an advanced RISC architecture with 133 powerful instructions, most of which execute in a single clock cycle; 32 general-purpose working registers; four flexible timer/counters with compare modes and PWM channels; two USARTs for serial communication; and a byte-oriented two-wire serial interface (TWI/I2C) plus SPI. The 16MHz maximum clock frequency delivers approximately 16 MIPS of throughput at 5V operation. The device operates from a single supply of 2.7V to 5.5V, supporting both 3.3V and 5V system designs. Flash memory supports in-system programming (ISP) through the SPI port, enabling firmware updates after board assembly without removing the device. Read-while-write flash capability allows firmware execution during EEPROM or flash programming operations. Typical applications include industrial control and factory automation, sensor and data-acquisition systems, motor and power-control nodes, building automation, and legacy embedded designs where a mature, well-documented AVR platform with ample flash is required. The 53 I/O lines and external memory interface make it well suited to designs driving keypads, displays, and multiple serial links simultaneously. For design, note that flash programming voltage and bootloader considerations affect layout: reserve access to the SPI pins (PB0-PB3) for ISP programming headers. Decouple VCC pins with 100nF ceramics placed close to each supply pin. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet, providing a single reference for sourcing and design decisions.

USD $3,12 En stock

ATMEGA128A-MN

ATMEGA128A-MN - 8-bit AVR MCU, 128KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA128A-MN is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB (64K x 16) flash memory, 4KB EEPROM, 4KB SRAM, and 53 general-purpose I/O lines, delivered in a 64-pin QFN (9x9 mm, VFQFN with exposed pad) surface-mount package running at up to 16 MHz. An 8-bit microcontroller is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs onto one silicon die. Within the power-management and embedded-systems hierarchy, it belongs to the AVR family of enhanced RISC MCUs, positioned above simple 8-bit controllers like the ATtiny series and below 32-bit ARM-based parts, making it a workhorse for mid-complexity embedded control. Key features include the AVR enhanced RISC architecture executing 133 powerful instructions - most in a single clock cycle - achieving throughput close to 1 MIPS per MHz. The flash supports read-while-write capability for in-system firmware updates, and 4KB of EEPROM retains calibration data through power cycles. The internal RC oscillator eliminates external crystals in timing-tolerant designs, and the part is rated to 105 degrees C for industrial environments. Technically, the ATmega128A combines a 32-register general-purpose file directly connected to the ALU, four flexible timer/counters, a real-time counter, and multiple serial interfaces. Throughputs near 16 MIPS at 16 MHz let designers meet demanding control loops without migrating to 16- or 32-bit cores, preserving the large legacy AVR code base and toolchain investment. Typical applications include industrial automation controllers, building automation and HVAC nodes, test and measurement instrumentation, and legacy ATmega103 board upgrades - the ATmega128A is 100% pin compatible with ATmega103 per the Microchip datasheet. Design consideration: the 64-QFN exposed-pad package requires a solid ground vias array under the thermal pad; budget EEPROM write endurance and verify ISP programming pin access (MOSI/MISO/SCK/RESET) on your PCB for production programming. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet, based on data verified as of 2026-09-16.

USD $5,42 En stock

ATMEGA128A-MUR

ATMEGA128A-MUR - 8-bit AVR MCU 128KB 16MHz 64-QFN | Microchip

The Microchip Technology ATMEGA128A-MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB flash memory, 16MHz maximum clock speed, 4KB EEPROM, 4KB SRAM, and 53 general-purpose I/O lines, housed in a 64-pin VQFN (9x9 mm) exposed-pad package. Operating from 2.7V to 5.5V, it delivers throughput approaching 1 MIPS per MHz. An 8-bit AVR microcontroller is a single-chip computer that integrates a RISC processor core, program flash, data SRAM, EEPROM, and peripheral functions such as timers, UARTs, and SPI on one die. Within the embedded systems hierarchy, it sits under the microcontroller family, which belongs to the broader class of integrated circuits and semiconductor devices used for embedded control. Key differentiating features include 133 powerful instructions, most executing in a single clock cycle; 32 general-purpose working registers directly connected to the ALU; read-while-write flash for in-system self-programming; four flexible timer/counters with compare modes and PWM; two USARTs; and a byte-oriented Two-Wire Interface (I2C-compatible) plus SPI and EBI/EMI connectivity. Architecturally, the ATmega128A uses the AVR enhanced RISC Harvard architecture with separate instruction and data buses, allowing single-cycle instruction fetch and execution. The advanced architecture achieves near-1 MIPS/MHz efficiency, letting designers optimize power consumption versus processing speed, aided by multiple sleep modes and an on-chip real-time counter. Typical applications include industrial control and embedded automation, motor control, metering, IoT end nodes, and low-power board-level designs where 128KB of flash supports larger C code bases without external memory. A key design consideration: the 64-QFN (9x9 mm) exposed pad must be soldered to a grounded thermal land pattern for reliable operation, and the 16MHz clock should be supplied via the on-chip oscillator or an external crystal per the datasheet clock configuration options. This page synthesizes distributor pricing, drop-in alternatives such as ATMEGA128A-MU and ATMEGA1284P-MUR, pinout guidance, and practical design notes not found in the manufacturer datasheet, adding value for sourcing and selection engineers. Pricing data is current as of 2026-09-16.

USD $5,20 En stock

ATMEGA128L-8AI

ATMEGA128L-8AI - 8-bit AVR MCU 8MHz 128KB TQFP-64 | Microchip

The Microchip (Atmel) ATMEGA128L-8AI is an 8-bit AVR RISC microcontroller with 128KB in-system programmable Flash, 4KB SRAM, 4KB EEPROM, and an 8-channel 10-bit ADC, running at up to 8MHz from a 2.7V to 5.5V supply in a 64-pin TQFP (14x14 mm) package, industrial temperature grade. An 8-bit microcontroller (MCU) is a self-contained computing chip integrating a processor core, program memory, data memory, and peripherals such as timers, UARTs, SPI, I2C, and ADC on a single die. MCUs sit at the device level of the embedded systems hierarchy: semiconductor -> integrated circuit -> embedded processor -> microcontroller, and are the workhorses of industrial control, instrumentation, and consumer electronics. Key features of the ATmega128 include the advanced AVR RISC architecture with 133 mostly single-cycle instructions, 32 general-purpose working registers, throughput approaching 1 MIPS per MHz, and a JTAG interface for on-chip debugging and boundary-scan. The chip also integrates two 8-bit timers, two 16-bit timers, two USARTs, SPI, TWI (I2C), and an analog comparator, giving designers a complete peripheral set without external glue logic. Architecturally, the ATmega128 uses a Harvard structure with separate program and data buses, allowing instruction fetch and data access to occur in the same clock cycle. Self-programming Flash enables in-system field updates through boot-loader firmware, while the byte-addressable EEPROM retains calibration data through power cycles. Power management modes (idle, power-down, power-save) reduce consumption for battery-operated designs. Typical applications include industrial automation controllers, building and HVAC control, metering, battery-powered instrumentation, and legacy embedded designs requiring large 128KB program memory at modest clock rates. Design consideration: choose the -8AI (8MHz, industrial) over the -16AI variant when operating below 5.5V or when power budget matters; verify that the ATmega128L flash erase/write cycles at low voltage match your end-of-life update plans. This page synthesizes distributor availability data, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $6,60 En stock

ATMEGA128L-8AJ

ATMEGA128L-8AJ - 8MHz AVR MCU 128KB Flash TQFP-64 | Microchip

The Microchip Technology (Atmel) ATMEGA128L-8AJ is an 8-bit AVR RISC microcontroller with 128KB self-programming Flash, 4KB SRAM, 4KB EEPROM, an 8-channel 10-bit ADC, and JTAG on-chip debugging, operating at up to 8MHz in a 64-pin TQFP (14x14 mm) package. An 8-bit microcontroller is a single-chip computer whose CPU processes data in 8-bit words; the AVR ATmega family sits within the broader microcontroller hierarchy (embedded processor -> MCU -> 8-bit MCU -> AVR ATmega), integrating program memory, data memory, peripherals, and CPU on one die. MCUs of this class are the workhorses of cost-sensitive embedded control systems. Key features include 133 powerful instructions (most single-cycle), 32 general-purpose 8-bit registers, 53 general-purpose I/O lines, EBI/EMI external memory interface, and connectivity peripherals covering SPI, I2C (TWI), and dual UART/USART. The JTAG interface supports on-chip debug and boundary scan, while the 8-channel 10-bit ADC with internal reference serves analog sensing directly. Technically, the ATmega128 uses an advanced RISC Harvard architecture with separate program and data buses, achieving close to 1 MIPS per MHz; at the 8MHz 'L' grade this yields up to 8 MIPS throughput. The self-programming Flash allows field firmware updates through the bootloader, and the low-voltage 'L' variant is characterized for operation at 2.7V to 5.5V. Typical applications include industrial automation controllers, building automation and HVAC boards, and legacy embedded systems originally designed around the pin-compatible ATmega103. Design consideration: the ATMEGA128L-8AJ is obsolete in most distribution channels; new designs should target the ATmega1281 or ATmega2561 families, while sustaining designs can use the drop-in variants listed on this page. This page synthesizes distributor availability, drop-in alternatives, pinout data, and practical design notes not found on the manufacturer product page.

USD $8,70 En stock

ATMEGA128L-8ANR

ATMEGA128L-8ANR - 8MHz 128KB Flash AVR MCU | Microchip 64-TQFP

The Microchip Technology ATMEGA128L-8ANR is a high-performance, low-power 8-bit AVR RISC microcontroller that combines 128 KB of in-system programmable Flash memory, 4 KB SRAM, 4 KB EEPROM, and rich on-chip peripherals in a 64-pin TQFP (14x14 mm) package. It executes instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz, with a maximum operating frequency of 8 MHz for the low-power ATmega128L variant. An AVR microcontroller is an 8-bit RISC (Reduced Instruction Set Computer) processor based on a Harvard architecture with separate program and data buses, allowing instruction fetch and data access to occur in the same clock cycle. The ATmega128L belongs to the megaAVR family, which sits in the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC. It is designed for embedded applications requiring deterministic real-time response, low power consumption, and integrated analog/digital peripherals. Key features include 53 general-purpose I/O lines, 32 general-purpose working registers, four flexible Timer/Counters with compare modes and PWM, two USARTs, a byte-oriented Two-wire Serial Interface (TWI/I2C-compatible), an SPI serial interface, an 8-channel 10-bit successive-approximation ADC, a JTAG interface for on-chip debugging, and a watchdog timer with separate on-chip oscillator. The device supports supply voltages from 2.7 V to 5.5 V (the 'L' variant optimizes low-voltage operation versus the standard ATmega128). The architecture uses an advanced RISC core with 133 powerful instructions, most executed in a single clock cycle. The integrated JTAG (IEEE 1149.1-compliant) interface supports boundary-scan and on-chip debug, simplifying in-system programming and field updates. The peripheral feature set is balanced for industrial control, human-interface designs, and battery-powered instrumentation. Typical applications include industrial automation and control, low-power IoT edge nodes, embedded HMI panels, sensor data acquisition systems, motor control firmware platforms, and battery-powered portable instrumentation. The wide 2.7 V to 5.5 V supply range also makes it suitable for legacy 5 V systems as well as 3.3 V designs with adequate decoupling. When designing with this part, ensure the JTAG pins are correctly terminated if the interface is unused, and respect the maximum clock frequency versus supply voltage tradeoff: at 2.7 V the device is rated up to 8 MHz, while higher frequencies require an external clock or crystal with proper load capacitor selection. Programming via SPI is also supported for bootloader-based field upgrades. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design considerations not found on a single datasheet page.

USD $11,85 En stock

ATMEGA128L-8AU

ATMEGA128L-8AU - 8MHz 128KB Flash AVR MCU | Microchip

The Microchip Technology ATMEGA128L-8AU is an 8-bit AVR RISC microcontroller with 128KB in-system programmable Flash, 4KB EEPROM, 4KB SRAM, and 53 general-purpose I/O lines, operating at up to 8 MHz from a 2.7V to 5.5V supply in a 64-lead TQFP (14x14 mm) package. An 8-bit microcontroller is a complete computer system on a single chip, integrating a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs. Within the power-management hierarchy of embedded systems, the MCU sits at the heart of the control layer, executing user firmware that sequences sensors, actuators, and communication interfaces. The AVR ATmega family is a Harvard-architecture RISC line now manufactured and supported by Microchip Technology following its acquisition of Atmel Corporation. Key features of the ATMEGA128L-8AU include 133 powerful instructions, most executable in a single clock cycle, delivering throughput approaching 1 MIPS per MHz. The 8-channel 10-bit ADC supports analog sensing, while the built-in JTAG interface enables on-chip debugging and boundary-scan testing. The L-8 speed-voltage grade guarantees operation across the full 2.7V to 5.5V industrial range at 8 MHz, and six low-power sleep modes reduce standby consumption for battery-operated products. Architecturally, the device pairs the AVR enhanced 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. Memory is organized as 128KB of ISP Flash with optional boot-code section for in-application programming, plus 4KB EEPROM for nonvolatile parameter storage and 4KB internal SRAM, expandable via the external memory interface on Ports A and C. Typical applications include industrial automation and control panels, battery-powered data loggers and metering systems, and embedded communication nodes using the dual hardware USARTs, SPI, and two-wire (I2C-compatible) interfaces. The JTAG debugger makes it equally suitable for long-lifetime products requiring in-circuit field updates. A key design consideration is clock selection: at 8 MHz the ATmega128L reaches its speed limit across the full voltage range, so use the internal calibrated RC oscillator or a conservative external crystal, and confirm fuse settings (CKOPT, BODLEVEL) before production programming. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $23,49 En stock

ATMEGA128L-8MI

ATMEGA128L-8MI - 8-bit AVR MCU, 128KB Flash, 8MHz | Microchip

The Microchip ATMEGA128L-8MI is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB of in-system programmable Flash memory (64K x 16), 4KB SRAM, 4KB EEPROM, an 8-channel 10-bit ADC, and a JTAG interface for on-chip debugging, packaged in a 64-pad QFN (MLF, 9x9 mm) for industrial temperature operation at up to 8 MHz. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 133 instructions in a single clock cycle. Within the embedded-systems hierarchy, it sits as a mid-range microcontroller unit (MCU) within Microchip's AVR ATmega family, combining program memory, data memory, peripherals, and CPU on one die - the classic single-chip embedded controller. Key features include 128KB self-programming Flash with a boot loader section for field firmware updates, 4KB internal SRAM and 4KB EEPROM for data retention without external memory, and up to 8 MIPS throughput at 8 MHz. The 8-channel 10-bit ADC supports analog sensing, while the JTAG interface enables boundary-scan testing and on-chip debugging. Two 8-bit and two 16-bit timers, USARTs, SPI, and a two-wire interface (I2C) round out the peripheral set. The advanced RISC architecture pairs 32 general-purpose working registers directly with the ALU, so a single instruction can execute an operation on register contents in one clock cycle. This yields deterministic, fast interrupt response and efficient C-compiler code density - a hallmark of the AVR line. The self-programming Flash allows the device to update its own program memory through a boot-loader routine, eliminating external programming hardware in the field. Typical applications include industrial automation nodes, building and HVAC controllers, battery-powered instrumentation that leverages the low-power operating modes, and motor-control or sensing boards that use the 10-bit ADC. Its 5V-friendly industrial rating suits noisy factory environments. Design consideration: the L-suffix device is speed-graded to 8 MHz; driving it above the rated frequency for the supply voltage range violates timing margins. Plan Flash wear-levelling if you store data in the 4KB EEPROM frequently. This page synthesizes distributor availability data, drop-in alternative options, and practical design notes not found in the manufacturer datasheet.

USD $4,68 En stock

ATMEGA128L-8MJ

ATMEGA128L-8MJ - 8-bit AVR MCU, 128KB Flash, 8MHz | Microchip

The Microchip Technology ATMEGA128L-8MJ is an 8-bit AVR RISC microcontroller with 128KB of In-System Programmable Flash, 4KB SRAM, and 4KB EEPROM, operating at up to 8 MHz from a 2.7V to 5.5V supply in a 64-pin VFQFN package with exposed pad. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power-management hierarchy, the ATmega128 family sits in the general-purpose mid-range segment: microcontroller -> embedded processor -> system-on-chip building block. The AVR core uses 32 general-purpose working registers directly connected to the ALU, allowing one-cycle execution that delivers approximately 8 MIPS at the 8 MHz maximum clock of this L-grade (low-voltage) variant. Key features include 133 powerful instructions, 53 general-purpose I/O lines, four flexible Timer/Counters with compare modes and PWM, a Real Time Counter, and in-system programmable Flash with Read-While-Write capability for field firmware updates. Communication and analog capability are comprehensive for its class: two USARTs, a byte-oriented Two-wire Serial Interface (TWI/I2C-compatible), an SPI serial port, an 8-channel 10-bit ADC, and a JTAG interface for on-chip debugging and boundary-scan. This peripheral set lets a single ATMEGA128L-8MJ replace a MCU plus separate UART, ADC, and EEPROM devices in cost-sensitive boards. Typical applications include industrial control panels, building automation nodes, battery-powered instrumentation benefiting from the low-voltage L variant, and legacy designs originally built around the pin-compatible ATmega103, which the ATmega128 can directly replace. Design consideration: keep the ADC reference clean and decouple AVCC, and note that at 8 MHz the device is specified across the full 2.7V-5.5V range, while 16 MHz operation would require the 16 MHz grade and 4.5V-5.5V supply. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $10,95 En stock

ATMEGA128L-8MN

ATMEGA128L-8MN - 8MHz AVR MCU 128KB Flash 64-QFN | Microchip

The Microchip Technology ATMEGA128L-8MN is an 8-bit AVR RISC microcontroller delivering 8 MIPS at 8 MHz, with 128 KB of in-system programmable Flash, 4 KB SRAM, 4 KB EEPROM, and an 8-channel 10-bit ADC, housed in a 64-QFN (9x9 mm) surface-mount package operating from 2.7 V to 5.5 V. An 8-bit AVR microcontroller is a self-contained computing IC that integrates a RISC processor core, program memory, data memory, and peripherals such as timers, UARTs, SPI, and ADCs on a single die. Within the power-management and embedded-systems hierarchy, MCUs sit at the application layer, executing user firmware for control, sensing, and communication tasks in everything from industrial automation to consumer devices. Key features include 133 powerful instructions with most executing in a single clock cycle, 53 programmable I/O lines, a JTAG interface for on-chip debugging and boundary-scan, and two 8-bit plus two 16-bit timers with PWM capability. The ATmega128 architecture also integrates dual USARTs, SPI, and a two-wire (I2C-compatible) interface, allowing multiple communication channels simultaneously. Technically, the AVR enhanced RISC core couples a large register file of 32 general-purpose working registers directly to the ALU, avoiding the accumulator bottleneck of classic 8-bit architectures. The -8MN suffix denotes the 8 MHz L-version rated from 2.7 V to 5.5 V, while the MN package code identifies the lead-free 64-pad QFN with a 9x9 mm body suitable for compact, thermally efficient layouts. Typical applications include industrial control panels, building automation and sensor hubs, battery-powered instruments where the low-voltage L-grade supports 3.3 V operation, and legacy ATmega128 designs maintained by Rochester Electronics distribution. Design consideration: when running from a 3.3 V rail, use the internal RC oscillator or a crystal rated for the low-voltage frequency limit; at 5 V the L-grade remains limited to 8 MHz, so choose the ATMEGA128-16MN variant only when a 4.5-5.5 V supply and 16 MHz operation are acceptable. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

USD $7,68 En stock

ATMEGA128L-8MNR

ATMEGA128L-8MNR - 8-bit AVR MCU 128KB Flash 64-QFN | Microchip

The Microchip Technology ATMEGA128L-8MNR is a high-performance, low-power 8-bit AVR RISC microcontroller with 128 KB of In-System Programmable Flash memory, 4 KB SRAM, 4 KB EEPROM, an 8-channel 10-bit ADC, and a JTAG interface for on-chip debugging, executing at up to 8 MHz across a 2.7 V to 5.5 V supply range in a 64-QFN (9x9 mm, MLF with exposed pad) package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the semiconductor hierarchy, this device belongs to the AVR ATmega family of 8-bit microcontrollers under the broader power-management and embedded-processing category. Its Advanced RISC architecture provides 133 powerful instructions, most of which execute in a single clock cycle, delivering high code efficiency and MIPS-per-megahertz performance. Key features include 64 K x 16 organization of Flash program memory supporting both ISP (In-System Programming) and IAP (In-Application Programming), 53 general-purpose I/O lines, and an 8-channel 10-bit A/D converter. The JTAG boundary-scan and on-chip debug capability simplify development, while the extended industrial temperature range of the MNR suffix (up to 105C per distributor listings) suits harsh environments. Architecturally, the AVR core uses a Harvard structure with separate program and data buses, 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. The device supports boot-code sections with write-protect, an 8-bit and a 16-bit timer/counter with PWM, two USARTs, SPI, TWI (I2C-compatible), and an analog comparator. Typical applications include industrial automation and control nodes, building and HVAC controllers, sensor data acquisition systems, battery-powered instrumentation (leveraging the 2.7 V low-voltage operation), and legacy ATmega103 board upgrades, since the ATmega128 is 100% pin compatible with ATmega103. When designing with this part, note that the MLF/QFN exposed pad should be soldered to a grounded PCB land pattern for both thermal dissipation and mechanical reliability, and that the 8 MHz speed grade with the L suffix allows full functionality down to 2.7 V, whereas the 16 MHz ATMEGA128 variants require 4.5 V to 5.5 V. This page synthesizes distributor pricing (as of 2026-09-16), verified drop-in alternatives within the AVR ATmega MLF-64 family, and practical design guidance not found in the manufacturer datasheet, providing procurement and engineering teams a single citable reference.

USD $4,55 En stock

ATMEGA128L-8MU

ATMEGA128L-8MU - 8MHz AVR MCU 128KB Flash QFN-64 | Microchip

The Microchip Technology ATMEGA128L-8MU is a high-performance, low-power 8-bit AVR RISC microcontroller delivering 8 MHz max clock speed, 128KB of In-System Programmable Flash, and 53 general-purpose I/O lines, housed in a 64-pin QFN (MLF) 9x9 mm package. It operates from a 2.7V to 5.5V supply. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in which most of its 133 powerful instructions execute in a single clock cycle, placing it in the broader hierarchy of microcontroller units (MCUs) within the embedded processor and semiconductor family. MCUs integrate CPU, program memory, data memory, and peripherals on a single die, making them the control backbone of embedded systems. Key features of the ATMEGA128L-8MU include 128KB (64K x 16) programmable Flash memory, 4KB SRAM, 4KB EEPROM, an 8-channel 10-bit A/D converter, and an IEEE-compatible JTAG interface for on-chip debugging and boundary-scan. It also provides two 8-bit and two 16-bit timers/counters, two USARTs, SPI, TWI (I2C-compatible), and six PWM channels, enabling compact single-chip designs. Technically, the advanced AVR RISC architecture with a 32-register general-purpose file is directly connected to the ALU, allowing one instruction executed per clock cycle for throughput up to 8 MIPS at 8 MHz. The JTAG boundary-scan capability simplifies production test, while In-System Programmability allows firmware updates on the final PCB without removal. Typical applications include industrial control and automation nodes, building and HVAC controllers, sensor data acquisition systems, and legacy embedded designs originally built around the pin-compatible ATmega103. The low-voltage 2.7V operation suits battery-powered instruments. A key design consideration: when replacing an ATmega103, configure the M103C fuse so the ATmega128 boots with ATmega103-compatible behavior; consult Microchip application note on ATmega103 migration. This page synthesizes distributor pricing, verified drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

USD $12,39 En stock

ATMEGA128L-8MUR

ATMEGA128L-8MUR - 8-bit AVR MCU 128KB 8MHz 64-QFN | Microchip

The Microchip Technology ATMEGA128L-8MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 128KB of in-system programmable FLASH, 4KB SRAM, 4KB EEPROM, and an 8MHz maximum clock frequency, housed in a 64-pad QFN (MLF) 9x9 mm package with exposed pad. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power-management hierarchy of embedded systems, the MCU sits at the application layer, coordinating sensors, actuators, and communication interfaces while managing its own sleep and power modes. The AVR family pioneered single-cycle RISC execution in 8-bit MCUs, and the ATmega128 remains one of its most widely adopted flagship devices. Key features include 133 powerful instructions (most single-cycle), 53 general-purpose I/O lines, an 8-channel 10-bit ADC, two 8-bit and two 16-bit timers with PWM, two USARTs, SPI, TWI (I2C), an analog comparator, and a JTAG interface for on-chip debugging and boundary scan. The wide 2.7V to 5.5V supply range of the L (low-voltage) grade allows direct operation from 3.3V or 5V rails. Technically, the ATmega128 achieves up to 8 MIPS throughput at 8MHz, with six sleep modes (idle, ADC noise reduction, power-save, power-down, standby, extended standby) down to sub-uA power-down current levels. Self-programmable flash enables boot-loader based field updates, while the JTAG port supports IEEE-style on-chip debug via AVR JTAGICE tools. Typical applications include industrial automation and process control nodes, building automation and metering, and low-power battery-operated instruments requiring both ample flash for protocol stacks and rich peripheral integration. Design consideration: the MLF/QFN center pad must be soldered to a grounded PCB pad for reliable ground return; also note the MUR reel coding requires reflow assembly, not hand soldering. This page synthesizes verified distributor pricing, drop-in alternatives, pin-compatibility guidance, and practical design notes not found in the manufacturer datasheet alone.

USD $11,75 En stock

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