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ATMEGA8535L-8AJ - 8KB AVR MCU, 8MHz, TQFP-44 | Microchip
ATMEGA8535L-8AJ

ATMEGA8535L-8AJ - 8KB AVR MCU, 8MHz, TQFP-44 | Microchip

The Microchip Technology ATMEGA8535L-8AJ is an 8-bit AVR RISC microcontroller with 8KB in-system programmable Flash, 512 bytes SRAM, 512 bytes EEPROM, and an 8-channel 10-bit ADC, running at up to 8MHz in a 44-pin TQFP package. The L suffix denotes low-voltage operation from 2.7V to 5.5V, and the AJ suffix denotes the industrial -40C to +85C temperature grade in the TQFP package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. In the embedded-systems hierarchy, an MCU sits above discrete logic and below application processors, providing self-contained control for sensors, actuators, and human-machine interfaces. Key features of the ATMEGA8535L include the AVR advanced RISC architecture with 130 powerful instructions, most executing in a single clock cycle, and 32 general-purpose working registers. The core delivers up to 16 MIPS throughput at 16MHz, so at the 8MHz limit of this L-grade part it still reaches roughly 8 MIPS. Communication peripherals include a byte-oriented Two-wire Serial Interface (I2C/TWI), an SPI interface, and a programmable USART (UART), covering virtually all common embedded buses. The peripheral set comprises three flexible Timer/Counters with compare and PWM modes, internal and external interrupt sources, a watchdog timer, and the 8-channel 10-bit analog-to-digital converter with internal reference options, plus 32 general-purpose I/O lines. In-System Self-Programming of the Flash with Read-While-Write support enables field firmware updates without a socketed device. Typical applications include industrial control panels, battery-powered instruments (leveraging the 2.7V low-voltage operation and low-power idle/power-down modes), sensor data acquisition front ends using the 8-channel ADC, and motor control or lighting systems using the PWM timer outputs. Design consideration: the 8MHz clock ceiling of this L-grade device is the trade-off for 2.7V operation; if your design runs at 5V and needs 16MHz, choose the ATMEGA8535-16A variants instead. This page synthesizes verified distributor inventory data, drop-in alternatives, and practical design guidance not found in a single manufacturer datasheet.

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ATMEGA8535L-8AU - 8-bit AVR MCU 8KB Flash 44-TQFP | Microchip
ATMEGA8535L-8AU

ATMEGA8535L-8AU - 8-bit AVR MCU 8KB Flash 44-TQFP | Microchip

The Microchip Technology ATMEGA8535L-8AU is a low-power 8-bit AVR RISC microcontroller with 8 KB of in-system programmable Flash, 512 B SRAM, 512 B EEPROM, and an 8-channel 10-bit ADC, supplied in a 44-lead TQFP (10x10 mm) package and rated for 0-8 MHz operation at 2.7-5.5 V. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the semiconductor taxonomy, the ATMEGA8535L-8AU sits in the hierarchy of 8-bit MCU -> microcontroller -> embedded processor -> integrated circuit, and it belongs to the AVR ATmega family, which is known for its single-cycle RISC execution and deterministic interrupt latency. Key features include 8 KB Flash (4K x 16), 512 B SRAM, 512 B EEPROM, 32 programmable I/O lines, two 8-bit and one 16-bit timer/counter, a 4-channel PWM unit, an 8-channel 10-bit ADC, a programmable USART, a master/slave SPI, and a byte-oriented two-wire serial interface (I2C). The device delivers up to 8 MIPS at 8 MHz and supports six sleep modes for low-power operation. The ATmega8535L core uses the enhanced AVR RISC architecture with 130 powerful instructions, most executing in a single clock cycle. The 'L' suffix denotes the low-voltage version, which operates from 2.7 V to 5.5 V and is speed-graded to 8 MHz, while the standard ATmega8535 runs at 4.5-5.5 V and up to 16 MHz. This makes the L-grade part attractive for battery-powered and 3.3 V mixed-supply designs. Typical applications include industrial control panels, battery chargers, motor control, home appliances, sensor interfaces, and legacy 8-bit embedded designs that require a proven, well-documented AVR core with generous I/O count. The 44-TQFP package offers a compact 10x10 mm footprint suitable for space-constrained boards. When designing with this device, ensure the supply is decoupled with a 100 nF ceramic capacitor close to each VCC pin, and note that the internal RC oscillator is factory-calibrated to +/-3% at 8 MHz, which may be adequate for many applications without an external crystal. The ATmega8535L is a mature, active-lifecycle part with extensive third-party toolchain support. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement, and layout decisions.

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ATMEGA8535L-8JI - 8KB Flash AVR MCU 44-PLCC | Microchip
ATMEGA8535L-8JI

ATMEGA8535L-8JI - 8KB Flash AVR MCU 44-PLCC | Microchip

The Microchip (Atmel) ATMEGA8535L-8JI is an 8-bit AVR RISC microcontroller with 8 KB of In-System Programmable Flash, 512 B SRAM, 512 B EEPROM, and an 8-channel 10-bit ADC, rated for 8 MHz operation in a 44-pin PLCC (16.6 x 16.6 mm) package for the industrial temperature range of -40C to +85C. An AVR microcontroller is a family of 8-bit reduced-instruction-set (RISC) MCUs in the broader hierarchy of microcontroller -> embedded processor -> integrated circuit. AVR cores execute most instructions in a single clock cycle, and the ATmega8535 achieves up to 16 MIPS throughput at 16 MHz across the family, making it a classic choice for deterministic, low-power embedded control. Key features of the ATMEGA8535L-8JI include the advanced RISC architecture with 130 powerful instructions and 32 general-purpose working registers, fully static operation, In-System Programmable (ISP) Flash for field firmware updates, and the L suffix indicating a wide 2.7V to 5.5V supply range. The J suffix denotes the 44-lead PLCC package, and the I suffix grades the device for -40C to +85C industrial environments. Technically, the Harvard architecture separates program and data buses, allowing the single-cycle instruction fetch that gives AVR its high code efficiency. On-chip peripherals such as the 8-channel 10-bit ADC, timers/counters, UART, and SPI reduce external component count. The 8 MHz rating of the L-speed grade balances performance with the low-voltage operating window. Typical applications include industrial control panels, sensor data acquisition nodes using the 8-channel ADC, motor control and appliance boards, and legacy AVR system maintenance where the PLCC-44 socketed footprint must be preserved. A key design consideration: the L grade runs up to 8 MHz across the full 2.7V to 5.5V range; if your board runs at 5V and needs 16 MHz, choose the ATMEGA8535-16JI speed grade instead. This page synthesizes distributor availability, drop-in same-package alternatives, and practical design guidance not consolidated in the manufacturer datasheet.

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ATMEGA8535L-8JJ - 8KB AVR MCU, 8MHz, 44-PLCC | Microchip
ATMEGA8535L-8JJ

ATMEGA8535L-8JJ - 8KB AVR MCU, 8MHz, 44-PLCC | Microchip

The Microchip Technology ATMEGA8535L-8JJ is an 8-bit AVR RISC microcontroller with 8 KB of In-System Programmable Flash memory, 512 bytes of SRAM, 512 bytes of EEPROM, and an 8-channel 10-bit ADC, rated for 8 MHz operation (ATmega8535L low-voltage grade) in a 44-pin PLCC (J) surface-mount package. An AVR microcontroller is a family of 8-bit Harvard-architecture MCUs from Microchip (originally Atmel) that executes most instructions in a single clock cycle. Within the product hierarchy, the ATmega8535 sits at: microcontroller -> 8-bit MCU -> AVR ATmega family. Because program memory and data memory are separate buses, the AVR can achieve up to 16 MIPS throughput at 16 MHz, delivering performance typically requiring larger clock speeds in CISC architectures. Key features include 130 powerful RISC instructions (most single-cycle), 32 general-purpose working registers, 32 programmable I/O lines, and three flexible Timer/Counters with compare modes. The device also integrates a byte-oriented Two-wire Serial Interface (TWI, I2C-compatible), a serial programmable USART, an SPI interface, and internal/external interrupt sources. The 10-bit ADC resolves 8 single-ended channels, suitable for sensor interfaces in cost-sensitive designs. The L suffix denotes the low-voltage product grade, operating from 2.7V to 5.5V with a maximum clock of 8 MHz, versus the 16 MHz standard grade. Self-programming Flash with Read-While-Write support enables field firmware updates without external programmers, while ISP via SPI simplifies production programming. Typical applications include industrial control boards, sensor data acquisition systems, motor control auxiliaries, and legacy embedded systems where the 44-PLCC footprint must be maintained for socketed or board-level compatibility. Designers should note the 8 MHz limit of the L-grade part: designs requiring 16 MHz throughput must use the standard-grade ATmega8535 variant instead. This page synthesizes verified distributor pricing, drop-in alternatives, pinout details, and practical design notes beyond what the manufacturer datasheet provides.

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ATMEGA8535L-8JU - AVR 8-bit MCU 8KB Flash 8MHz 44-PLCC | Microchip
ATMEGA8535L-8JU

ATMEGA8535L-8JU - AVR 8-bit MCU 8KB Flash 8MHz 44-PLCC | Microchip

The Microchip Technology ATMEGA8535L-8JU is a low-power 8-bit AVR RISC microcontroller with 8KB Flash, 512B SRAM, 512B EEPROM and an 8-channel 10-bit ADC, rated 0-8 MHz at 4.5-5.5V, housed in a 44-lead PLCC (J-lead, 16.6x16.6 mm) package for industrial temperature ranges. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. The ATmega8535 belongs to the AVR ATmega family, which sits within the broader microcontroller hierarchy: MCU -> embedded processor -> integrated circuit -> semiconductor. AVR's Harvard architecture with 130 mostly single-cycle instructions delivers up to 16 MIPS at 16 MHz, giving roughly 1 MIPS per MHz efficiency. Key features include 8KB (4K x 16) self-programmable Flash, 512 bytes of in-system EEPROM, an 8-channel 10-bit successive-approximation ADC, 32 programmable I/O lines, two 8-bit and one 16-bit timers with PWM, a programmable serial USART, and an on-chip analog comparator. The 'L' speed grade and GREEN designation support low-power, lead-free designs. Technically, the AVR enhanced RISC core executes most instructions in one clock cycle through a two-stage pipeline, while 32 general-purpose registers are directly connected to the ALU. Six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) let designers cut quiescent draw in battery-powered systems. Typical applications include industrial control panels, ADC-based sensor acquisition nodes, motor and lighting control boards, and legacy PLCC-footprint AVR designs needing a second source. The 44-PLCC package suits socketed production and prototype environments. Design consideration: the 'L' grade limits clocking to 8 MHz; above that, choose ATMEGA8535-16Jx variants. Ensure 4.5-5.5V supply since this is not the 2.7V-capable low-voltage option across all conditions. This page synthesizes distributor pricing, drop-in alternatives, pin guidance, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA8535L-8JUR - 8-Bit AVR MCU 8MHz 8KB Flash 44-PLCC | Microchip
ATMEGA8535L-8JUR

ATMEGA8535L-8JUR - 8-Bit AVR MCU 8MHz 8KB Flash 44-PLCC | Microchip

The Microchip Technology ATMEGA8535L-8JUR is an 8-bit AVR ATmega RISC microcontroller operating at 8 MHz with 8 KB (4K x 16) of In-System Programmable Flash memory, 512 bytes SRAM, 512 bytes EEPROM, and an 8-channel 10-bit ADC, housed in a 44-pin PLCC (16.6 x 16.6 mm) surface-mount package rated for industrial temperature ranges. An AVR microcontroller is a modified-Harvard-architecture, 8-bit reduced instruction set computer (RISC) device in the broader hierarchy of microcontrollers (MCU -> embedded processor -> integrated circuit). AVR cores execute most instructions in a single clock cycle through a two-stage pipeline, giving deterministic instruction timing that is prized in real-time embedded systems. The ATmega8535 sits in the mid-range ATmega family between the smaller ATmega8 and larger ATmega64 parts, offering the classic AVR peripheral set with an expanded analog section. Key features include up to 16 MIPS throughput at 16 MHz (8 MIPS at this part's 8 MHz ceiling for the L-grade), 130 powerful instructions most of which execute in a single cycle, 32 general-purpose working registers, and fully static operation. The 8-channel 10-bit analog-to-digital converter with internal bandgap reference supports direct sensor interfacing, while three flexible Timer/Counters with compare modes drive PWM and timing functions. Connectivity covers a serial programmable USART, a byte-oriented Two-Wire Serial Interface (TWI, compatible with I2C), and a Serial Peripheral Interface (SPI) that doubles as the In-System Programming (ISP) download path. In-System Programmable Flash with Read-While-Write capability allows firmware updates in the end product without removal. Low-power modes (Idle, Power-down, Power-save) extend battery life in portable designs. Typical applications include industrial control and automation nodes, motor control and HVAC systems, sensor data acquisition using the 8-channel ADC, and legacy AVR design maintenance where the PLCC-44 footprint must be preserved. The L suffix denotes a 2.7 V minimum supply enabling 3V-class battery-powered operation. Design consideration: the L-grade 8 MHz speed limit must be respected; run the ATMEGA8535-16 variants if a 16 MHz clock is required, and ensure decoupling on both VCC/AVCC pins plus a stable analog reference for ADC accuracy. This page synthesizes distributor availability, drop-in PLCC-44 alternatives, and practical design notes not found in a single manufacturer datasheet, with pricing as of 2026-09-19.

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ATMEGA8535L-8MC - 8MHz AVR MCU, 8KB Flash | Microchip
ATMEGA8535L-8MC

ATMEGA8535L-8MC - 8MHz AVR MCU, 8KB Flash | Microchip

The Microchip (Atmel) ATMEGA8535L-8MC is an 8-bit AVR RISC microcontroller with 8 KB self-programming Flash program memory, 512 B SRAM, 512 B EEPROM, and an 8-channel 10-bit ADC, rated for 0-8 MHz operation (up to 8 MIPS) at 2.7 V to 5.5 V, housed in a 44-pad QFN/MLF package (7 x 7 mm, 0.5 mm pitch) with exposed pad. An 8-bit AVR microcontroller is a single-chip Harvard-architecture processor that executes most of its 130 instructions in a single clock cycle, sitting within the power-management/embedded-control hierarchy as a complete MCU: CPU core, program Flash, data SRAM, EEPROM, timers, ADC, and serial interfaces in one package. The ATmega8535 belongs to the classic ATmega family that also includes the ATmega8515 and ATmega16, all sharing the AVR RISC core and similar peripheral sets. Key features include 32 general-purpose working registers with full static operation, two 8-bit timers and one 16-bit timer with PWM, an 8-channel 10-bit A/D converter, a programmable serial USART, SPI interface, and the two-wire serial interface (I2C-compatible). The self-programming Flash enables in-system programming and bootloader firmware updates without a programmer socket. The L suffix designates the low-voltage speed grade: 2.7 V to 5.5 V operation at 0-8 MHz, while the standard ATmega8535 runs 0-16 MHz at 4.5-5.5 V. Six software-selectable sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) support battery-operated designs. The MC suffix indicates the commercial temperature grade in the 44-pad QFN/MLF package. Typical applications include industrial sensor nodes using the 8-channel ADC, motor control and PWM actuation, battery-powered instruments, and general embedded control where compact 7 x 7 mm surface-mount packaging is required. For design, decouple VCC/AVCC with 100 nF ceramics placed within 2 mm of the pads, and tie the exposed pad to a ground pour for thermal and EMC performance. Verify that 8 MHz operation is sufficient for your ISR budget, since the 16 MHz ATmega8535 grades are not pin-different. This page synthesizes distributor availability, drop-in same-package alternatives, pricing context, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA8535L-8MI - 8-bit AVR MCU, 8KB Flash, 44-QFN | Microchip
ATMEGA8535L-8MI

ATMEGA8535L-8MI - 8-bit AVR MCU, 8KB Flash, 44-QFN | Microchip

The Microchip Technology ATMEGA8535L-8MI is a high-performance, low-power 8-bit AVR RISC microcontroller with 8 KB of In-System Programmable Flash, 512 bytes of SRAM, 512 bytes of EEPROM, and an 8-channel 10-bit ADC, delivered in a 44-pin VQFN/MLF exposed-pad package rated for the industrial temperature range. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in which most of its 130 instructions execute in a single clock cycle, making the AVR family a cornerstone of embedded control alongside other 8-bit families such as PIC16 and 8051 derivatives. Microcontrollers of this class integrate program memory, data memory, peripherals, and CPU in one chip, sitting at the device level of the broader embedded systems hierarchy. Key features include up to 16 MIPS throughput at 16 MHz (this L-variant operates up to 8 MHz across a 2.7V-5.5V supply), three flexible Timer/Counters with compare modes, a programmable USART, a byte-oriented Two-wire Serial Interface (TWI/I2C), an SPI serial port, and 32 general purpose I/O lines. The 8-channel 10-bit ADC directly interfaces analog sensors without external conversion hardware. The AVR core uses fully static operation and advanced RISC architecture with 32 general purpose working registers, allowing C-compiler-friendly code density and deterministic execution. Self-programming Flash enables in-field firmware updates, while the Read-While-Write capability lets the bootloader write program memory without stalling execution. Brown-out detection, internal RC oscillator options, and multiple sleep modes support low-power, battery-conscious designs. Typical applications include industrial sensor nodes using the 8-channel ADC, motor control and HVAC boards using Timer/Counter PWM, and legacy systems where the ATMEGA8535 is pin compatible with the AT90S8535 for PCB drop-in upgrades. Design tip: the MLF exposed pad must be soldered to a grounded PCB land for thermal and ground integrity, and fuse configuration (clock source, brown-out, S8535C compatibility mode) must be programmed before relying on AT90S8535 migration behavior. This page synthesizes distributor stock data, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8535L-8MU - AVR 8-bit MCU 8MHz 8KB Flash | Microchip
ATMEGA8535L-8MU

ATMEGA8535L-8MU - AVR 8-bit MCU 8MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA8535L-8MU is a low-power, high-performance 8-bit AVR RISC microcontroller delivering up to 8 MIPS at 8 MHz, with 8 KB of In-System Programmable Flash, 512 B SRAM, 512 B EEPROM, and an 8-channel 10-bit ADC, housed in a 44-pad VQFN/MLF (7 x 7 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. Within the semiconductor hierarchy, the ATMEGA8535L-8MU belongs to the ATmega family -> AVR 8-bit MCU -> microcontroller unit (MCU) -> embedded processor. Its Harvard architecture with separate program and data buses gives it throughput roughly ten times faster per megahertz than comparable CISC microcontrollers. Key features include 130 powerful instructions (most single-cycle), 32 general-purpose working registers, 32 programmable I/O lines, three timers (two 8-bit, one 16-bit with PWM output compare), an 8-channel 10-bit analog-to-digital converter, USART serial port, SPI interface, two-wire (I2C-compatible) interface, and an analog comparator. The L suffix denotes an extended operating voltage of 2.7 V to 5.5 V, while the 8 speed grade permits clock frequencies from 0 to 8 MHz. Technically, the ATmega8535 provides six software-selectable power-saving sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby), internal and external interrupt sources, and on-chip debugging via JTAG. Self-programmable Flash enables boot-loader-based field updates, and lock bits protect code IP. Typical applications include industrial control systems, battery-powered instrumentation, motor control front ends using the 10-bit ADC, and legacy AT90S8535 board upgrades - the ATmega8535 is pin compatible with the earlier AT90S8535. Design consideration: for battery designs, exploit Power-down mode with the asynchronous Timer/Counter2 oscillator to cut standby current to microamp levels; note the JTAG-enable fuse should be disabled when pins PC2-PC5 are needed as general I/O. This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8535L-8MUR - 8-bit AVR MCU 8KB Flash 44-VQFN | Microchip
ATMEGA8535L-8MUR

ATMEGA8535L-8MUR - 8-bit AVR MCU 8KB Flash 44-VQFN | Microchip

The Microchip Technology ATMEGA8535L-8MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 8 KB of In-System Programmable Flash (4K x 16), 512 B SRAM, 512 B EEPROM, and an 8-channel 10-bit ADC, delivering up to 8 MHz operation in a 44-pad VQFN/MLF (7 x 7 mm) surface-mount package. An AVR ATmega microcontroller is an 8-bit reduced-instruction-set (RISC) MCU that executes most of its 130 powerful instructions in a single clock cycle. In the embedded-systems hierarchy, it belongs to the ATmega family of AVR microcontrollers, which sit within Microchip's broader 8-bit MCU portfolio and typically serve as the main system controller in cost-sensitive, low-power designs. Key features include the advanced RISC core with 32 x 8-bit general-purpose working registers, a throughput of up to 16 MIPS at 16 MHz (8 MIPS at this part's 8 MHz grade), and 32 programmable I/O lines. The L-suffix grade operates from a 2.7 V to 5.5 V supply at speeds of 0 to 8 MHz, making it suitable for both 3.3 V and 5 V systems, while the non-L ATmega8535 requires 4.5 V to 5.5 V and runs to 16 MHz. The peripheral set covers two 8-bit and two 16-bit timers/counters with PWM, an 8-channel 10-bit ADC, a byte-oriented Two-Wire Serial Interface (I2C-compatible), an SPI serial port, a programmable serial USART, and an on-chip analog comparator. Six software-selectable power-saving modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby) let designers cut current draw dramatically in battery-operated equipment. Typical applications include industrial control panels, sensor data acquisition with the 10-bit ADC, motor control via PWM timers, building automation, and legacy AVR system maintenance where the ATmega8535 was originally designed in. Design-wise, use the VQFN package's exposed pad for solid ground connection, keep the analog reference (AREF) path clean when using the ADC, and remember that debug relies on the debugWIRE-compatible serial interface toolchain since this generation lacks JTAG. Flash endurance and ISP support allow field firmware updates over SPI. This page synthesizes verified distributor pricing, same-footprint drop-in alternatives across the AVR ATmega family, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA8535L-8PI - 8-bit AVR MCU 8KB Flash 8MHz | Microchip
ATMEGA8535L-8PI

ATMEGA8535L-8PI - 8-bit AVR MCU 8KB Flash 8MHz | Microchip

The Microchip Technology ATMEGA8535L-8PI is a high-performance, low-power 8-bit AVR RISC microcontroller with 8KB self-programming Flash program memory, 512 bytes SRAM, 512 bytes EEPROM, an 8-channel 10-bit ADC, and an operating frequency of up to 8 MHz, packaged in a 40-pin PDIP (0.600 in, 15.24 mm) with 32 general-purpose I/O lines. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in which program memory and data memory are accessed on separate buses, allowing most of its 130 powerful instructions to execute in a single clock cycle. Within the power-management hierarchy, a microcontroller unit (MCU) integrates CPU, memory, timers, and communication peripherals on one die, making it the central control element of an embedded system. Key features include the AVR advanced RISC core with 32 general-purpose working registers delivering up to 16 MIPS throughput at 16 MHz (8 MIPS at the 8 MHz speed grade of the L variant), In-System Programmable (ISP) Flash with Read-While-Write capability, and a wide 2.7V to 5.5V operating voltage range unique to the ATmega8535L low-voltage grade. Peripheral integration covers three flexible Timer/Counters with compare modes, a byte-oriented Two-wire Serial Interface (I2C/TWI), a programmable serial USART, and an SPI interface for 544-byte SRAM expansion. Six software-selectable power-saving sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) enable battery-operated designs. The 8-channel 10-bit successive-approximation ADC supports single-ended and differential conversions, useful for direct analog sensor acquisition. The JTAG-less, low-cost design targets classic through-hole prototyping on 0.600 in DIP sockets. Typical applications include industrial control and automation, motor and HVAC control boards, sensor data acquisition nodes, and educational/hobby embedded platforms where DIP packages simplify prototyping and in-circuit programming. Design consideration: the ATmega8535L speed grade limits operation to 0-8 MHz and 2.7-5.5V; for 16 MHz 4.5-5.5V operation choose the ATMEGA8535-16P grade instead, keeping the identical footprint. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8535L-8PU - 8KB Flash AVR MCU 8MHz DIP-40 | Microchip
ATMEGA8535L-8PU

ATMEGA8535L-8PU - 8KB Flash AVR MCU 8MHz DIP-40 | Microchip

The Microchip Technology ATMEGA8535L-8PU is an 8-bit AVR RISC microcontroller with 8 KB In-System Programmable Flash, 512 B SRAM, 512 B EEPROM, an 8-channel 10-bit ADC, and a maximum clock of 8 MHz, housed in a 40-pin PDIP (DIP-40) through-hole package. An AVR microcontroller is a single-chip computer built on the AVR enhanced RISC architecture, in which most of its 130 instructions execute in a single clock cycle, delivering roughly 1 MIPS per MHz. Within the embedded-systems hierarchy, a microcontroller unit (MCU) integrates the CPU core, program memory, data memory, peripherals, and general-purpose I/O on one die, replacing multi-chip processor-plus-logic solutions in industrial control, instrumentation, and hobbyist platforms. Key features include 32 programmable I/O lines, an 8-channel 10-bit A/D converter for direct analog sensor connection, three flexible timer/counters (two 8-bit, one 16-bit) with compare and PWM modes, a byte-oriented Two-wire Serial Interface (TWI/I2C), and a full-duplex serial USART. The L suffix denotes the low-voltage grade, operating from 2.7V to 5.5V at 0-8 MHz per the internal verified database, suiting battery-powered designs. Technically, the Harvard architecture with separate program and data buses plus a 2-cycle hardware multiplier underpins the high code efficiency. Six software-selectable sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) trade wake-up latency for microamp-level current. The 8 KB Flash supports 1,000 write/erase cycles with Read-While-Write, enabling field firmware updates via SPI ISP. Typical applications include industrial control panels, ADC-based sensor data loggers, PWM motor control, and breadboard-friendly educational embedded systems where the through-hole DIP-40 package simplifies prototyping. Design consideration: verify the VCC-versus-frequency curve before clocking near 8 MHz at low VCC, use a 0.1 uF decoupling capacitor across VCC/GND, and keep the AREF path clean for 10-bit ADC accuracy. This page synthesizes distributor pricing, drop-in DIP-40 alternatives, full pinout, and design notes not consolidated in the manufacturer datasheet.

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ATMEGA88-15AD - 8KB Flash AVR MCU 16MHz 5V | Atmel/Microchip
ATMEGA88-15AD

ATMEGA88-15AD - 8KB Flash AVR MCU 16MHz 5V | Atmel/Microchip

The Atmel (now Microchip Technology) ATMEGA88-15AD is a high-performance, low-power 8-bit AVR RISC microcontroller with 8KB of In-System Programmable (ISP) Flash memory with read-while-write capability, 512B EEPROM, 1KB SRAM, 23 general purpose I/O lines, and a maximum clock speed of 16 MHz, supplied in a 32-pin TQFP package (7 x 7 mm, 1.0 mm height, 0.8 mm pitch) operating from a 4.5V to 5.5V supply. An 8-bit AVR microcontroller is a single-chip computer built on the AVR enhanced RISC architecture, in which most instructions execute in a single clock cycle. Within the power-management hierarchy it integrates the CPU, program memory, data memory, timers, and peripherals on one die, delivering throughput approaching 1 MIPS per MHz and letting system designers optimize power consumption versus processing speed. Key features include 130 powerful instructions with mostly single-cycle execution, 32 general purpose working registers, three flexible timer/counters with compare modes and PWM, a 6-channel 10-bit ADC, a programmable serial USART, an SPI serial interface, a two-wire (I2C-compatible) interface, and an on-chip debug capability via debugWIRE. The advanced RISC pipeline combined with Harvard architecture memory bus separates instruction and data paths, so the 8KB flash programs while the core fetches the next instruction - a major reason the AVR family achieves near 1 MIPS per MHz efficiency. In-system programmability via the SPI port or bootloader allows firmware updates after board assembly. Typical applications include industrial control and automation nodes, motor and LED control with PWM timers, and embedded systems requiring serial communication over USART, SPI, or I2C. Its 5V supply suits legacy 5V industrial buses and robust noise-margin designs. Design consideration: the 4.5V to 5.5V operating range means this device is not suitable for 3.3V-only systems - select a 20 MHz-capable or V-series variant for wider voltage rails. This page synthesizes distributor pricing, verified drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA88-15AT - 8-bit AVR MCU 8KB Flash 16MHz TQFP-32 | Microchip
ATMEGA88-15AT

ATMEGA88-15AT - 8-bit AVR MCU 8KB Flash 16MHz TQFP-32 | Microchip

The Microchip Technology (Atmel) ATMEGA88-15AT is a low-power 8-bit AVR RISC microcontroller with 8KB in-system programmable Flash, 1KB SRAM, and 512B EEPROM, operating at up to 16MHz from a 4.5V to 5.5V supply in a 32-pin TQFP (7x7 mm, 0.8 mm pitch) package. An 8-bit microcontroller integrates a CPU core, program memory, data memory, timers, and peripherals on a single chip, sitting at the entry level of the embedded processing hierarchy (microcontroller -> embedded processor -> semiconductor IC). The ATmega88 belongs to the ATmega48/88/168 family, based on the AVR enhanced RISC architecture that executes powerful instructions in a single clock cycle, achieving throughput approaching 1 MIPS per MHz so system designers can optimize power consumption versus processing speed. Key features include 130 powerful instructions with mostly single-cycle execution, 23 programmable I/O lines, two 8-bit timers and one 16-bit timer with PWM, a 6-channel 10-bit ADC, and connectivity via SPI, TWI (I2C), and USART interfaces. The 15 speed grade supports a 16MHz maximum clock, and the part is rated to 85 degrees C operation per distributor data. The AVR core uses a Harvard architecture with separate program and data buses, plus in-system programmable (ISP) Flash via SPI, enabling firmware updates on the production line. Hardware-supported boot loading, internal RC oscillators, a power-on reset, a brown-out detector, and an on-chip debug capability via debugWIRE reduce external component count and bill-of-materials cost. Typical applications include industrial automation control, consumer appliances, battery chargers, sensor nodes, and hobby/educational platforms such as Arduino-compatible designs, where low cost and robust peripheral integration matter more than raw processing power. For design, note that the ATmega88 is pin compatible with the ATmega8 but not a firmware drop-in; porting guidance is given in Microchip application note AVR094, and the ATmega48/168 share the same footprint for memory-size scaling. This page synthesizes distributor data, drop-in alternatives, and practical design notes beyond what the manufacturer datasheet provides.

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ATMEGA88-15MT - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip
ATMEGA88-15MT

ATMEGA88-15MT - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip

The Microchip Technology ATMEGA88-15MT is a low-power 8-bit AVR RISC microcontroller with 8KB of In-System Programmable Flash memory, 16 MHz maximum clock speed, and 4.5V to 5.5V supply voltage, housed in a 32-pin QFN (5x5 mm) surface-mount package. An 8-bit AVR microcontroller is a single-chip processor that integrates a RISC CPU core, program Flash, data SRAM, EEPROM, and peripheral functions such as timers, USART, and ADC on one die. Microcontrollers sit at the heart of the embedded systems hierarchy, above discrete logic and below application processors, and the ATmega family (ATmega48/88/168/328) is one of the most widely deployed 8-bit MCU families in industrial and hobby electronics, including the Arduino ecosystem. Key features include the AVR advanced RISC architecture with 130 powerful instructions, most executing in a single clock cycle, delivering throughput approaching 1 MIPS per MHz. The device provides 8KB (4K x 16) self-programmable Flash with read-while-write support, 23 general-purpose I/O lines, 32 general-purpose working registers, and a rich peripheral set including three flexible timer/counters with compare modes, a serial programmable USART, and a byte-oriented Two-Wire serial interface (I2C-compatible). Technically, the Harvard-architecture core separates program and data buses, allowing simultaneous Flash and SRAM access. In-System Programming (ISP) enables field firmware updates without removing the chip, while boot-loader support allows reprogramming through application code. The picoPower-class low-power design supports multiple sleep modes for battery-conscious applications. Typical applications include industrial automation and control nodes, consumer appliance control boards, and sensor or communication interfaces where 5V logic compatibility and proven AVR toolchain support matter. Design consideration: at the full 16 MHz clock the part requires a 4.5V to 5.5V supply; for 2.7V to 5.5V operation the clock must be derated, so confirm the supply rail before finalizing the crystal selection. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA88-15MT1 - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip
ATMEGA88-15MT1

ATMEGA88-15MT1 - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip

The Microchip Technology ATMEGA88-15MT1 is an 8-bit AVR ATmega microcontroller IC delivering 16 MHz clock operation, 8KB (4K x 16) of In-System Programmable FLASH, and 1KB of SRAM in a 32-pin VFQFN (5x5 mm) package with exposed pad. It runs from a 4.5V to 5.5V supply and provides 23 general-purpose I/O lines. An 8-bit microcontroller (MCU) is a single integrated circuit that contains a processor core, memory, and programmable input/output peripherals on one die. Within the embedded systems hierarchy, the ATMEGA88-15MT1 belongs to the AVR ATmega family, which sits under the broader categories of microcontrollers, embedded processors, and semiconductors. MCUs of this class are the workhorses of cost-sensitive embedded control, replacing discrete logic and analog control loops with software-defined behavior. Key features include the Advanced RISC AVR architecture with 130 powerful instructions, most executing in a single clock cycle; 512 bytes of EEPROM for non-volatile data storage; and hardware support for In-System Programming (ISP), allowing firmware updates without removing the chip from the board. The 32-VFQFN exposed-pad package provides excellent thermal and electrical performance for space-constrained designs. Architecturally, the AVR core uses a Harvard structure with separate program and data buses, enabling single-cycle instruction fetch and execution. Peripheral sets typically include an 8-bit and a 16-bit timer, a 10-bit ADC, USART, SPI, and two-wire interface (I2C), allowing the device to service sensing, communication, and actuation tasks concurrently. Per the hotenda listing, the part carries AEC-Q100 automotive qualification, supporting deployment in harsh environments. Typical applications include automotive body and comfort control modules, industrial sensor nodes and motor control boards, and consumer appliance control panels. The 16 MHz rating and 23 I/O lines give enough headroom for most 8-bit control tasks without moving to larger, costlier devices. A key design consideration is the 4.5V to 5.5V supply window: this 15-speed-grade part is rated for 16 MHz only across the 5V range, so designers targeting 3.3V or battery operation should evaluate the ATmega88V or picoPower ATmega88PA variants instead. This page synthesizes distributor availability data, drop-in alternatives, pinout information, and practical design guidance not found in the manufacturer datasheet.

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ATMEGA88-15MT2 - 8KB Flash AVR MCU 150C TQFP-32 | Microchip
ATMEGA88-15MT2

ATMEGA88-15MT2 - 8KB Flash AVR MCU 150C TQFP-32 | Microchip

The Microchip Technology ATMEGA88-15MT2 is a high-performance picoPower 8-bit AVR RISC microcontroller with 8 KB ISP Flash memory, 512 B EEPROM, and 1 KB SRAM, housed in a 32-pin TQFP (32A, 7 x 7 mm) package rated for operation up to 150 degrees C at 4.5 V to 5.5 V supply. The MT2 suffix denotes Microchip's highest-temperature automotive-grade offering, and product qualification per AEC-Q100 has been verified during regular product qualification. An AVR microcontroller is a class of 8-bit reduced-instruction-set (RISC) MCUs in the wider microcontroller and embedded processor hierarchy, combining CPU, program Flash, data SRAM, EEPROM, and peripherals on a single chip. The ATmega88 sits in the middle of the ATmega48/88/168 family: identical pinout and peripherals, differing only in memory density (4 KB / 8 KB / 16 KB Flash). Key features include 130 powerful instructions with mostly single-cycle execution, 32 general purpose working registers, 23 programmable I/O lines, three flexible timer/counters, a 10-bit ADC, and read-while-write ISP Flash. The advanced RISC Harvard architecture delivers up to 16 MIPS throughput at 16 MHz, enabling computationally demanding control loops in a small footprint. Technical depth: the core executes most instructions in a single clock cycle, and the picoPower technology suite provides multiple sleep modes (idle, ADC noise reduction, power-down, power-save, standby) for aggressive energy budgets. In-system programmability with read-while-write support allows firmware updates in the field via SPI. Typical applications include automotive body and powertrain auxiliary modules, industrial control nodes exposed to high ambient temperatures, sensor interfaces using the 10-bit ADC, and motor or lighting control where the -15 grade's 150 degrees C rating removes derating concerns. Design consideration: because the -15 grade is specified at elevated junction temperature, verify total power dissipation so the TQFP-32 thermal resistance keeps junction temperature within the 150 degrees C rating. This page synthesizes cross-reference data, drop-in alternatives, pinout detail, and design guidance not consolidated in the manufacturer datasheet.

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ATMEGA88-15MZ - 8-Bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip
ATMEGA88-15MZ

ATMEGA88-15MZ - 8-Bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip

The Microchip Technology (Atmel) ATMEGA88-15MZ is a high-performance, low-power 8-bit AVR RISC microcontroller executing up to 16 MIPS at 16 MHz, with 8 KB of In-System Programmable Flash (4K x 16), 512 B EEPROM, 1 KB SRAM, and 23 general-purpose I/O lines, housed in a 32-pin QFN/MLF (5x5 mm) exposed-pad package. The -15MZ suffix denotes the 4.5V to 5.5V supply range (V), the 16 MHz speed grade, and the RoHS-compliant matte-tin QFN package. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that fetches instructions from Flash and data from SRAM in a single clock cycle. Within the power-management and embedded-control hierarchy, it sits at the entry level of the ATmega family, below the ATmega168 and ATmega328P, and executes most of its 130 instructions in one cycle, achieving near 1 MIPS per MHz throughput. Key features include two 8-bit timers and one 16-bit timer with output compare and PWM channels, a 10-bit ADC with 6 multiplexed single-ended input channels (plus 2 differential channels with programmable gain of 1x, 10x, or 200x), a byte-oriented two-wire serial interface (I2C-compatible), an SPI serial interface, and a programmable serial USART. The picoPower-capable core supports six software-selectable power-saving modes, with idle current and power-down operation suited to battery-operated designs. The AVR enhanced RISC architecture combines 32 general-purpose working registers directly connected to the arithmetic logic unit, allowing two independent registers to be accessed in one instruction. In-System Programming and In-Application Programming via the SPI port or bootloader permit firmware updates after assembly, while the 512 B EEPROM retains calibration and configuration data through power cycles. Debugging is supported through debugWIRE on the single-wire RESET pin. Typical applications include industrial automation sensors, automotive-grade body and comfort control modules, smart-home and IoT end nodes, motor control with PWM, and 5V-tolerant legacy designs where the wide 4.5V to 5.5V operating range tolerates unregulated supplies. For design, place 100 nF decoupling capacitors at every VCC/AVCC pin pair and route the exposed QFN pad to a solid ground plane for thermal and EMC performance. This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA88-20AI - 8-bit AVR MCU 20MHz 8KB Flash TQFP-32 | Microchip
ATMEGA88-20AI

ATMEGA88-20AI - 8-bit AVR MCU 20MHz 8KB Flash TQFP-32 | Microchip

The Microchip Technology ATMEGA88-20AI is a high-performance, low-power 8-bit AVR RISC microcontroller delivering up to 20 MIPS throughput at 20 MHz, with 8 KB of ISP self-programming Flash, 512 B EEPROM, 1 KB SRAM, and a 32-pin TQFP (7x7 mm) package rated for -40C to +85C operation. An 8-bit AVR microcontroller is a single-chip computer that executes an advanced RISC instruction set, combining program memory, data memory, timers, analog-to-digital conversion, and serial communication peripherals on one die. Within the power-management hierarchy of embedded systems, the ATmega family sits at the entry-to-mid range of Microchip (formerly Atmel) MCU offerings, below the ATmega328 and ATmega2560 families. Key features include 131 powerful instructions with mostly single-cycle execution, 32 general purpose working registers, 23 general purpose I/O lines, and picoPower technology for low static power consumption. On-chip peripherals comprise three flexible timer/counters with compare modes, a 10-bit 8-channel ADC, a programmable serial USART, a byte-oriented Two-Wire Interface (TWI/I2C), and an SPI serial port. Technical depth comes from the AVR Harvard architecture with single-level pipelining, allowing one instruction per clock cycle. The device supports DebugWIRE on-chip debugging through the reset line, In-System Programming (ISP) with read-while-write Flash, and offers brown-out detection, power-on reset, and internal calibrated RC oscillator options at 8 MHz and 128 kHz. Operation spans 1.8 V to 5.5 V with 20 MHz performance guaranteed at 4.5 V to 5.5 V. Typical applications include industrial sensor nodes and motor control boards (the industrial -40C to +85C temperature grade suits factory environments), consumer appliance user interfaces, and battery-powered instrumentation where picoPower sleep modes extend battery life. A key design consideration: maximum clock frequency scales with VCC - 20 MHz is only guaranteed above 4.5 V, so designs running at 3.3 V must limit the clock to roughly 13.3 MHz or account for derating. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-19.

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ATMEGA88-20AU - 8-Bit AVR MCU 8KB Flash 20MHz | Microchip
ATMEGA88-20AU

ATMEGA88-20AU - 8-Bit AVR MCU 8KB Flash 20MHz | Microchip

The Microchip Technology ATMEGA88-20AU is an 8-bit AVR RISC microcontroller with 8 KB of in-system programmable Flash, 1 KB SRAM, and 512 B EEPROM, running at up to 20 MHz and housed in a 32-pin TQFP (7x7 mm) package. It delivers up to 20 MIPS throughput at 20 MHz and operates from 2.7 V to 5.5 V. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. The AVR family sits within the broader hierarchy of 8-bit MCUs, which in turn belong to the microcontroller class of embedded processors. The ATmega88 is built on Microchip's picoPower AVR RISC architecture, executing most instructions in a single clock cycle from 32 general-purpose working registers. Key features include 8 KB ISP Flash with read-while-write capability, 1 KB SRAM, 512 B EEPROM, 23 general-purpose I/O lines, three flexible timer/counters with compare modes, an 8-channel 10-bit ADC, a programmable watchdog timer, and debugWIRE on-chip debugging. The device supports 20 MIPS at 20 MHz and offers multiple sleep modes for low-power operation. The ATmega88 uses a Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. Its 130-instruction set is optimized for C compiler efficiency, and the on-chip debugWIRE interface provides non-intrusive emulation using only the RESET pin, eliminating the need for a dedicated debug header. Typical applications include consumer electronics, industrial control, battery management, sensor nodes, and legacy ATmega8 design migrations. The 32-TQFP package with 0.8 mm pitch suits automated assembly, and the wide 2.7-5.5 V supply range supports both 3.3 V and 5 V systems. When designing with this device, decouple VCC and AVCC with 100 nF ceramic capacitors placed close to the pins, and connect the AREF pin through a low-impedance path when using the ADC. The RESET pin requires an external pull-up for reliable power-on reset. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection, replacement, and layout decisions.

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ATMEGA88-20MI - 8-bit AVR MCU 20MHz 8KB Flash | Microchip
ATMEGA88-20MI

ATMEGA88-20MI - 8-bit AVR MCU 20MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA88-20MI is a high-performance, low-power 8-bit AVR RISC microcontroller combining 8 KB of ISP Flash memory with read-while-write capability, 1 KB SRAM, 512 B EEPROM, and 23 general-purpose I/O lines, delivered in a 32-pad VQFN (5x5 mm) package rated for the industrial temperature range of -40C to +85C. It executes up to 20 MIPS at 20 MHz and operates from 1.8 V to 5.5 V. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers and communication interfaces. Within the embedded-systems hierarchy, an 8-bit RISC MCU like the ATmega88 family sits below 32-bit MCUs and application processors, making it the workhorse of cost-sensitive, low-power control tasks in the power management and embedded control stack. Key features include an advanced RISC architecture with 131 powerful instructions, most executable in a single clock cycle; 32 general-purpose 8-bit working registers; three flexible timer/counters with compare modes; and in-system self-programmable Flash. Peripherals include a serial programmable USART, byte-oriented Two-Wire Interface (TWI/I2C), SPI serial interface, an 8-channel 10-bit ADC, an analog comparator, and internal calibrated RC oscillator options. Technical depth: the AVR Harvard architecture fetches instructions and data over separate buses, sustaining one MIPS per MHz. debugWIRE provides on-chip debugging over the RESET line with a single wire, and the picoPower techniques reduce active and sleep current. Brown-out detection, internal/external interrupt sources, and a watchdog timer round out robust-system features. Typical applications include industrial control systems, robotics, sensor nodes, HVAC and appliance control, and battery-powered instrumentation where 5 V operation, 10-bit ADC sampling, and low cost matter. The 32-VQFN 5x5 mm footprint suits compact two-layer PCBs. Design consideration: at 20 MHz and 5 V the device meets its timing window only above 4.5 V; below 4.5 V the maximum clock must be derated per the datasheet frequency-voltage curve. This page synthesizes distributor sourcing data, drop-in alternatives within the same footprint, and practical design notes not found in the manufacturer datasheet.

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ATMEGA88-20MJ - 8-bit AVR MCU 20MHz 8KB Flash VQFN-32 | Microchip
ATMEGA88-20MJ

ATMEGA88-20MJ - 8-bit AVR MCU 20MHz 8KB Flash VQFN-32 | Microchip

The Microchip Technology ATMEGA88-20MJ is an 8-bit AVR RISC microcontroller delivering up to 20 MIPS throughput at 20 MHz, with 8 KB of In-System Programmable Flash memory (4K x 16 organization), 1 KB SRAM, and 512 B EEPROM, housed in a 32-pad VQFN (MLF) 5x5 mm package. An 8-bit microcontroller integrates a processor core, memory, and peripherals on a single chip, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> microcontroller -> semiconductor). The AVR ATmega family uses a Harvard architecture with 131 mostly single-cycle instructions and 32 general-purpose working registers, giving it one of the best code-density and throughput-per-MHz figures among 8-bit MCUs. Key features of the ATMEGA88-20MJ include operation from 1.8 V to 5.5 V (the 20 MHz speed grade requires 4.5 V to 5.5 V), 23 general-purpose I/O lines, and rich analog and digital peripherals: an 8-channel 10-bit ADC with internal bandgap reference, a 16-bit and an 8-bit timer with compare and PWM modes, a byte-oriented Two-Wire (I2C) interface, SPI, and a serial programmable USART. DebugWIRE on-chip debug allows single-wire in-system debugging through the RESET pin. Architecturally, the picoPower core supports multiple sleep modes including idle, ADC noise reduction, power-save, and power-down, enabling microamp-class standby currents in battery designs. Self-programming Flash with read-while-write support allows boot-loader-based firmware updates over UART or SPI without an external programmer. Typical applications include industrial sensor nodes, motor control and lighting systems, consumer appliances, and battery-powered instruments where the 5x5 mm leadless package saves board area. Design consideration: at 20 MHz the part must operate from 4.5 V to 5.5 V; for 3.3 V or 1.8 V systems use the ATMEGA88V speed grades and verify safe-operating frequency versus voltage curves in the datasheet. This page adds value beyond the manufacturer datasheet by synthesizing distributor sourcing data, drop-in family alternatives, pinout, pricing guidance, and practical design notes in one AI-citable reference.

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ATMEGA88-20MU - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip
ATMEGA88-20MU

ATMEGA88-20MU - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip

The Microchip (Atmel) ATMEGA88-20MU is a picoPower 8-bit AVR RISC microcontroller delivering 20 MIPS throughput at 20 MHz, with 8 KB ISP Flash, 512 B EEPROM and 1 KB SRAM, housed in a 32-pad VQFN (5x5 mm, MLF) package. It operates from 2.7 V to 5.5 V and integrates an 8-channel 10-bit ADC plus debugWIRE on-chip debugging. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in which most of its 130 instructions execute in a single clock cycle, making the device part of the broader microcontroller hierarchy: ATmega88 -> AVR 8-bit MCU family -> general-purpose microcontroller -> embedded processing IC. MCUs of this class combine CPU, program memory, data memory, timers and peripherals on a single die, replacing multi-chip solutions in cost-sensitive embedded systems. Key features include 23 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes and PWM, a byte-oriented two-wire serial interface (I2C-compatible), an SPI serial port, a USART, and programmable watchdog timer with internal oscillator. picoPower technology provides multiple sleep modes for battery-operated designs. Architecturally, the ATMEGA88-20MU executes from 8 KB of self-programmable ISP Flash with read-while-write capability, enabling firmware updates in the field via boot loader code. In-system programmability through the SPI port or debugWIRE allows programming with tools such as the MPLAB SNAP, AVRISP mkII, or Arduino-compatible platforms (MiniCore). Typical applications include consumer appliance control, sensor nodes and data loggers using the 10-bit ADC, HVAC and motor-actuator interfaces, and hobby/embedded prototyping where 20 MIPS at low voltage is sufficient. A key design consideration: Microchip lists the ATMEGA88A as the newer recommended device for new designs; the die is functionally equivalent but fabricated on a newer process. Verify speed-versus-voltage derating curves for your supply rail. This page synthesizes distributor availability, drop-in alternative cross-references, pinout data, and design notes not consolidated in the manufacturer datasheet. Pricing shown requires verification - see validation note.

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ATMEGA88-20PI - 8KB Flash 20MHz AVR MCU 28-DIP | Microchip
ATMEGA88-20PI

ATMEGA88-20PI - 8KB Flash 20MHz AVR MCU 28-DIP | Microchip

The Microchip Technology ATMEGA88-20PI is an 8-bit AVR RISC microcontroller with 8KB ISP Flash (4K x 16), 1KB SRAM, 512B EEPROM, and up to 20 MIPS throughput at 20MHz, housed in a 28-pin PDIP (0.300 inch, 7.62mm) package. The PI suffix indicates the industrial temperature range of -40C to +85C and lead-free DIP packaging. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 131 instructions in a single clock cycle, sitting within the power-management-and-embedded-control hierarchy between simple 8051-class MCUs and 32-bit ARM Cortex-M devices. AVR MCUs remain a staple of embedded control, hobby electronics (the Arduino Uno is built on the closely related ATmega328P), and cost-sensitive industrial products. Key features include 23 general-purpose I/O lines, three flexible timer/counters with compare and PWM modes, an 8-channel 10-bit ADC, byte-oriented Two-Wire (I2C) interface, SPI, and a serial programmable USART. Peripherals include brown-out detection/reset, power-on reset, watchdog timer, and debugWIRE on-chip debugging through the reset pin. The ATmega88 self-programming Flash supports read-while-write operation for in-system firmware updates, and the picoPower technology family provides multiple sleep modes for low-power designs. Operating voltage spans 1.8V to 5.5V (the 20MHz speed grade requires 4.5V to 5.5V for full-speed operation). Typical applications include industrial sensor nodes, motor and LED control, HVAC controllers, battery-powered instruments, and education/embedded prototypes where through-hole DIP mounting simplifies assembly and socket-based rework. Design consideration: when running at 20MHz, keep the supply at 5V within the 4.5V-5.5V band and place 100nF decoupling on VCC/AVCC with AREF decoupled separately. This page adds distributor-sourced alternatives, pinout, design notes, and pricing context beyond what the manufacturer datasheet provides.

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