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ATMEGA8HVA-4TUR

ATMEGA8HVA-4TUR - AVR 8-Bit MCU 4MHz 8KB Flash | Microchip

The Microchip Technology ATMEGA8HVA-4TUR is an 8-bit AVR ATmega microcontroller IC with a 4 MHz maximum clock speed, 8KB (4K x 16) of FLASH program memory, and a high-voltage tolerant peripheral set, housed in a 28-pin TSOP/TSSOP (0.465 inch, 11.80 mm width) surface-mount package supplied in tape and reel. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripheral interfaces on one die. The AVR ATmega family from Microchip (originally Atmel) sits within the broader hierarchy of 8-bit microcontrollers used in embedded control, sitting above discrete logic and below 32-bit application processors. The AVR core combines a rich instruction set with 32 general-purpose working registers, all directly connected to the arithmetic logic unit, allowing single-cycle instruction execution. Key features of the ATMEGA8HVA-4TUR include the 8KB self-programmable FLASH organized as 4K x 16, a 4 MHz rated operating frequency suited to low-noise, low-EMI designs, and a high-voltage tolerant, open-drain IO pin that supports serial communication per the manufacturer datasheet. In-system programming is supported through 4 general-purpose IO ports that support SPI programming, allowing firmware updates on the assembled PCB without removing the device. Technical context: the HVA variant of the ATmega8 family was developed for applications that must interface with higher-voltage domains, such as automotive battery-connected nodes and sensor conditioning circuits, where a standard MCU pin would be damaged. The AVR architecture's single-cycle execution delivers roughly 1 MIPS per MHz, so at 4 MHz the device provides approximately 4 MIPS of processing throughput. Typical applications include automotive LIN-bus and body-electronics nodes, high-voltage sensor interfaces, battery management supervisory circuits, and industrial control modules that require SPI-programmable firmware in a compact 28-pin footprint. A key design consideration: this device is listed as obsolete by multiple distributor comparison services, so new designs should evaluate drop-in alternatives such as the ATMEGA16HVA-4TU (same 28-TSOP footprint, 16KB FLASH) or plan a redesign to an active AVR or PIC part. This page synthesizes distributor pricing signals, obsolescence status, drop-in alternative analysis, and practical design notes not found in a single manufacturer datasheet, giving engineers a complete sourcing and replacement picture in one place.

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ATMEGA8L-8AI

ATMEGA8L-8AI - AVR 8-bit MCU 8MHz 8KB Flash 32-TQFP | Microchip

The Microchip Technology ATMEGA8L-8AI is a low-power 8-bit AVR RISC microcontroller with 8KB self-programming Flash, 1KB SRAM, 512B EEPROM, and a 6/8-channel 10-bit ADC, operating at up to 8 MHz in a 32-pin TQFP (7x7 mm) industrial-temperature package. The -8AI suffix denotes the low-voltage L variant rated at 2.7V to 5.5V with industrial temperature range. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 130 instructions in a single clock cycle, delivering throughput approaching 1 MIPS per MHz. MCUs of this class sit at the entry level of the embedded microcontroller hierarchy and integrate CPU, program memory, data memory, timers, communication peripherals (SPI, TWI/I2C, UART), and analog-to-digital conversion on a single chip, replacing multi-chip solutions in cost-sensitive embedded control systems. Key features include the 8KB in-system self-programmable Flash with 10,000 write-cycle endurance, on-chip 2.7V to 5.5V operation for battery-powered designs, and a rich peripheral set: three PWM channels, two 8-bit timers plus one 16-bit timer, and both master and slave SPI and TWI interfaces. The AVR core is fully static, allowing clock frequencies down to DC for ultra-low-power operation. Architecture-wise, the ATmega8 couples 32 general-purpose working registers directly to the ALU, so a single instruction can execute an operation between two registers in one clock cycle. Six sleep modes, including Power-down and Power-save, reduce consumption to microamp levels, and a watchdog timer with separate on-chip oscillator adds system reliability. In-system programmability via SPI permits firmware updates after board assembly. Typical applications include industrial sensor nodes using the 10-bit ADC, battery-powered instrumentation exploiting the 1.8V-class L-family voltage range, motor and lighting control using the three PWM channels, and legacy consumer appliances. It fits designs where 8KB of code space and 8 MHz performance are sufficient at minimal cost. Design consideration: program the CKOPT and clock-source fuses correctly for the chosen crystal, since an incorrect fuse setting is the most common cause of a non-starting ATmega8 board. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in a single manufacturer datasheet, per web data verified as of 2026-09-19.

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ATMEGA8L-8AU

ATMEGA8L-8AU - 8-Bit AVR MCU 8KB Flash 8MHz | Microchip

The Microchip Technology ATMEGA8L-8AU is an 8-bit AVR RISC microcontroller with 8 KB of in-system programmable Flash, 1 KB SRAM, and 512 bytes EEPROM, operating at 8 MHz from a 2.7 V to 5.5 V supply in a 32-pin TQFP (7x7 mm) package. It delivers up to 8 MIPS throughput at 8 MHz and integrates 23 programmable I/O lines, an 8-channel 10-bit ADC, and dual 8-bit/16-bit timers. An AVR microcontroller is a Harvard-architecture 8-bit MCU that executes most instructions in a single clock cycle, combining Flash program memory, SRAM data memory, and EEPROM non-volatile storage on one die. Within the product hierarchy, the ATmega8L sits under AVR 8-bit microcontrollers, which fall under general-purpose MCUs, which are part of the broader embedded processor and semiconductor category. The 'L' suffix denotes the low-voltage 2.7-5.5 V version, while '8' indicates 8 MHz maximum clock and 'AU' the TQFP package with industrial temperature range. Key differentiators include 130 powerful instructions with most executing in a single clock cycle, 8 KB Flash with 10,000 write/erase cycles endurance, 512 bytes EEPROM with 100,000 cycles, and a programmable watchdog timer with on-chip oscillator. The device supports ISP programming via SPI and offers five sleep modes for power-sensitive designs. Architecturally, the ATmega8L uses a single-cycle RISC core with 32 general-purpose working registers directly connected to the ALU, achieving throughput approaching 1 MIPS per MHz. This allows system designers to optimize power consumption versus processing speed - a critical trade-off in battery-powered embedded systems. Typical applications include industrial control loops, IoT sensor nodes, motor control, metering equipment, embedded automation, and low-power board designs. The integrated 10-bit ADC and PWM channels make it well-suited for analog sensor interfacing and motor drive control without external components. When designing with the ATMEGA8L-8AU, ensure the decoupling capacitors are placed within 5 mm of the VCC pins and use a 16 MHz crystal or ceramic resonator only if the 8 MHz internal calibrated oscillator accuracy is insufficient. The internal RC oscillator eliminates external components for cost-sensitive designs. 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 procurement and design decisions.

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ATMEGA8L-8MC

ATMEGA8L-8MC - 8KB AVR MCU 8MHz 32-VQFN | Microchip

The Microchip Technology ATMEGA8L-8MC (originally Atmel) is a low-power 8-bit AVR RISC microcontroller with 8KB of In-System Programmable Flash, 1KB SRAM, and 512B EEPROM, running at up to 8MHz in a 32-pin VQFN (5x5 mm) package with exposed pad (32M1). A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog-to-digital converters. The ATmega8 sits in the broader hierarchy of embedded processors: 8-bit microcontroller within the AVR family, itself a branch of the power-management-friendly RISC MCU category popularized by Atmel and now maintained by Microchip Technology. Key features include a 130-instruction AVR RISC core with mostly single-cycle execution delivering up to 8 MIPS at 8MHz, an 8-channel 10-bit ADC for direct sensor interfacing, and connectivity via I2C (TWI), SPI, and UART/USART. On-chip brown-out detection, power-on reset, PWM timers, and a watchdog timer reduce external component count and improve system reliability. Architecturally, the ATmega8 uses a Harvard-structure two-stage pipeline with 32 general-purpose working registers directly connected to the ALU, allowing most instructions to execute in one clock cycle. The 'L' suffix denotes the low-voltage variant (2.7V to 5.5V operation) while the '-8' speed grade caps clock frequency at 8MHz. Typical applications include industrial automation control nodes, consumer electronics such as appliances and remote controls, and automotive accessory systems where a low-cost, low-voltage MCU with integrated ADC is required. Its 23 general-purpose I/O pins cover sensing, actuation, and communication duties in compact designs. When designing with this device, note that the VQFN exposed pad should be soldered to a grounded land pattern for both thermal relief and mechanical robustness, and that the 8MHz speed grade must be respected when selecting crystals or the internal RC oscillator. This page synthesizes verified distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-19.

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ATMEGA8L-8MJ

ATMEGA8L-8MJ - 8MHz AVR MCU, 8KB Flash, 32-VQFN | Microchip

The Microchip Technology ATMEGA8L-8MJ is an 8-bit AVR RISC microcontroller with 8KB (4K x 16) of In-System Programmable FLASH, 512 bytes of EEPROM, 1KB of SRAM, 23 general-purpose I/O lines, an 8MHz maximum clock speed, and I2C, SPI, and UART/USART connectivity, housed in a 32-pin VFQFN exposed-pad (5x5 mm) package. Note: this part is listed as Obsolete by distributor data. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest tier of the embedded computing hierarchy (MCU -> embedded processor -> system-on-chip). The ATmega8 family is part of the AVR line, a modified Harvard-architecture 8-bit RISC family originally developed by Atmel, now owned by Microchip Technology after their 2016 acquisition. The ATMEGA8L-8MJ executes 130 powerful instructions, most in a single clock cycle, achieving close to 1 MIPS per MHz. The L suffix denotes the low-voltage grade (operation below the standard 4.5V floor of the ATmega8), and the internal oscillator option removes the need for an external crystal in cost- or space-sensitive designs. On-chip peripherals include brown-out detection and reset, power-on reset, PWM outputs, and a watchdog timer. Architecturally, the device provides 32 general-purpose working registers directly connected to the ALU, three flexible Timer/Counters with compare modes, a byte-oriented Two-wire Serial Interface (I2C/TWI), a serial programmable USART, and SPI. A 6-channel ADC and Read-While-Write FLASH programming round out the feature set, per the Atmel ATmega8/L datasheet (Atmel-2486). Typical applications include industrial control nodes, sensor and instrumentation boards, hobby and educational embedded systems, and legacy replacement designs where a compact 5x5 mm QFN footprint and 3.3V-friendly operation are required. Design consideration: because this part is obsolete, new designs should target the ATmega8A family or pin-compatible successors, and existing BOMs should secure stock or qualify a drop-in alternative such as ATMEGA8L-8MU before layout freeze. This page synthesizes distributor cross-reference data, packaging details, drop-in alternative analysis, and practical sourcing guidance not found in the manufacturer datasheet.

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ATMEGA8L-8MU

ATMEGA8L-8MU - 8-Bit 8MHz 8KB MCU | Microchip Technology

The Microchip Technology ATMEGA8L-8MU is an 8-bit AVR RISC-based microcontroller with an 8 MHz maximum clock frequency, 8 KB of Flash program memory, 512 bytes of EEPROM, and 1 KB of SRAM, packaged in a 32-VQFN 5 mm × 5 mm package. It provides 23 general-purpose I/O pins and combines low-power operation with programmable in-system serial programming support. What is an 8-bit microcontroller? An 8-bit microcontroller is a programmable semiconductor that executes instructions using an 8-bit data path. The ATMEGA8L belongs to the AVR family, a RISC-based architecture designed for efficient embedded control. Its memory hierarchy includes Flash for firmware, SRAM for working data, and EEPROM for nonvolatile parameter storage, making it suitable for compact control, sensing, communications, and automation products. Key verified features include 8 KB of ISP Flash, read-while-write capability, 512 bytes of EEPROM, 1 KB of SRAM, 23 I/O lines, 32 general-purpose working registers, and three flexible timer/counters. The L designation identifies the low-power version, while the -8 speed grade and M package code indicate the 8 MHz and surface-mount configuration. The 32-VQFN package supports dense PCB layouts but requires careful thermal-pad and assembly planning. The device is based on a high-performance, low-power AVR 8-bit RISC core. Its memory arrangement allows firmware to be programmed and reprogrammed through ISP, while the peripheral set supports embedded timing, serial communication, analog comparison, and digital control tasks. Exact operating-voltage, current, temperature, timer-channel, and package-dimension values are not present in the supplied web data and should be confirmed from the official datasheet before design release. Typical applications include compact sensor controllers, low-cost industrial control modules, battery-operated instruments, LED and display controllers, communications equipment, and small automation systems. The 23 I/O lines provide useful connectivity for buttons, sensors, relays, indicators, and serial interfaces when the board design fits within the device’s electrical and timing limits. For PCB implementation, use the manufacturer’s recommended VQFN land pattern, provide a stable decoupling network close to the supply pins, and connect the exposed pad according to the datasheet’s thermal and layout guidance. Verify programming, clock, reset, and unused-pin requirements before production. This page combines verified distributor data, source links, application guidance, and explicitly marked data gaps rather than guessing unspecified electrical values.

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ATMEGA8L-8PC

ATMEGA8L-8PC - 8MHz AVR 8KB Flash MCU | Microchip

The Microchip Technology ATMEGA8L-8PC is an 8-bit AVR RISC microcontroller delivering up to 8 MIPS throughput at 8 MHz, with 8 KB of self-programming ISP Flash memory, 1 KB SRAM, and 512 bytes of EEPROM, housed in a 28-pin PDIP through-hole package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as ADCs, timers, and serial interfaces onto one die. MCUs sit at the heart of the embedded systems hierarchy - embedded processor, microcontroller, system-on-chip - and the AVR ATmega family from Atmel (now Microchip Technology) is one of the most widely deployed 8-bit MCU architectures, famous as the heart of classic Arduino boards. Key features of the ATMEGA8L-8PC include the advanced AVR RISC architecture with 130 powerful instructions, most executing in a single clock cycle, 32 general-purpose working registers, and two 8-bit and one 16-bit timers/counters. Peripherals include a 6-channel 10-bit ADC, USI-class serial connectivity via SPI, TWI (I2C-compatible), and UART, plus an on-chip analog comparator. The L designation specifies low-voltage operation from 2.7V to 5.5V, making the device suitable for battery-powered designs. The -8 speed grade is rated to 8 MHz, and the P identifies the plastic 28-lead PDIP package while C denotes commercial temperature operation. In-system programmable Flash allows firmware updates without removing the device from the board. Technical depth: fully static operation, optional Brown-out Detection, internal calibrated RC oscillator (1/2/4/8 MHz), and external or internal clock sources provide flexible timing. Power management includes idle, ADC noise reduction, and power-down sleep modes for microamp-class standby current. Typical applications include hobbyist and educational embedded systems, low-cost industrial control, sensor acquisition boards using the 10-bit ADC, and legacy maintenance of AVR-based products. Design consideration: when replacing an ATMEGA8L-8PC with the newer ATMEGA8A, verify fuse settings and the internal RC oscillator calibration bytes. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8L-8PI

ATMEGA8L-8PI - 8MHz AVR 8KB Flash MCU DIP-28 | Microchip

The Atmel (now Microchip Technology) ATMEGA8L-8PI is a low-power, 8-bit AVR RISC microcontroller with 8 KB of In-System Programmable (ISP) FLASH memory, 1 KB of SRAM, 512 bytes of EEPROM, and a maximum clock frequency of 8 MHz, housed in a 28-pin PDIP (PI) package rated for the industrial temperature range. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and programmable peripherals into one package. The ATmega8 belongs to the AVR family of 8-bit microcontrollers, which sits within the broader hierarchy of embedded processors and semiconductor ICs. AVR cores execute most of their 130 instructions in a single clock cycle, delivering high code efficiency for general-purpose embedded control. Key features of the ATMEGA8L-8PI include the advanced AVR RISC architecture with 32 general-purpose working registers, a 10-bit ADC with 6 or 8 multiplexed channels, three timers (two 8-bit, one 16-bit with PWM), a hardware USART, SPI, and TWI (I2C) serial interfaces, plus programmable brown-out detection and internal calibrated RC oscillator. The device operates from 2.7 V to 5.5 V, which makes the L (low-voltage) grade suitable for both 3.3 V battery-powered designs and 5 V industrial systems. The '-8' speed grade guarantees correct operation up to 8 MHz across the full voltage range, while the 'I' suffix denotes the -40C to +85C industrial temperature rating, and the 'P' suffix identifies the through-hole 28-pin plastic DIP package for easy prototyping and low-volume production. Typical applications include industrial control boards, sensor nodes, hobby and educational platforms (including Arduino-compatible boards), home appliances, LED lighting controllers, and battery-powered instruments where the ADC and PWM peripherals simplify analog signal handling. Designers should note that the 8 MHz speed limit and 8 KB flash size are the main constraints; code-heavy projects may prefer the pin-compatible ATmega88 family. This page synthesizes verified distributor data, pin-compatible drop-in alternatives, pricing tiers, and practical design notes not consolidated in the manufacturer datasheet. Pricing references are as of 2026-09-19.

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ATMEGA8L-8PJ

ATMEGA8L-8PJ - 8-bit AVR MCU 8MHz 8KB Flash 28-DIP | Microchip

The Microchip Technology ATMEGA8L-8PJ is an 8-bit AVR RISC microcontroller with 8KB (4K x 16) of In-System Programmable FLASH program memory, 1KB of SRAM, and a maximum clock frequency of 8MHz, packaged in a 28-pin PDIP (0.300-inch, 7.62mm) through-hole package. A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, memory, and programmable peripherals on one die. The AVR ATmega family, originally developed by Atmel and now manufactured by Microchip Technology, sits within the broader taxonomy of embedded processors: MCU -> 8-bit MCU -> AVR core -> ATmega series. MCUs are the compute backbone of embedded systems, executing control loops, communication stacks, and sensor-signal processing in millions of products. Key features of the ATMEGA8L-8PJ include an AVR RISC core delivering close to 1 MIPS per MHz, 512 bytes of EEPROM for non-volatile parameter storage, and connectivity through I2C (Two-Wire Interface), SPI, and UART/USART peripherals. The integrated 6-channel, 10-bit analog-to-digital converter (ADC) with an optional internal 2.56V reference enables direct connection of analog sensors without an external converter. The -PJ grade operates from 2.7V to 5.5V, allowing battery- or USB-powered designs on a single supply rail. Architecturally, the AVR core uses a Harvard structure with separate program and data buses and 32 general-purpose working registers, giving single-cycle execution for most instructions and predictable real-time behavior valued in control applications. In-system programmability allows firmware updates on the assembled board via the SPI (ISP) header. Typical applications include industrial control boards, sensor nodes and data loggers, hobby and educational embedded platforms (Arduino heritage), and small home-automation or battery-powered devices. For design, note the 8MHz ceiling: use the internal RC oscillator or an external crystal, and keep GPIO loading within the 40mA absolute-maximum pin rating for reliability. This page adds value beyond the manufacturer datasheet by synthesizing distributor stock, drop-in alternatives, comparison tables, and practical design notes in one AI-citable reference.

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ATMEGA8L-8PU

ATMEGA8L-8PU - 8-bit AVR MCU, 8KB Flash 8MHz | Microchip

The Microchip Technology ATMEGA8L-8PU is an 8-bit AVR RISC microcontroller with 8KB (4K x 16) of In-System Programmable FLASH, 512B EEPROM, 1KB SRAM, and 23 general-purpose I/O lines, rated for 0 to 8 MHz operation and housed in a 28-pin PDIP package. An 8-bit microcontroller (MCU) is a single integrated circuit that contains a processor core, memory, and programmable peripherals, forming the lowest tier of the embedded processing hierarchy: MCU -> embedded processor -> microprocessor system. The AVR family, originally developed by Atmel and now owned by Microchip Technology, uses an advanced RISC Harvard architecture in which most instructions execute in a single clock cycle, delivering up to 16 MIPS throughput at maximum clock speed. Key features of the ATMEGA8L-8PU include 130 powerful instructions with mostly single-cycle execution, 32 general-purpose working registers, a fully static design, three flexible timer/counters with compare modes, and an internal 8-channel 10-bit A/D converter (6 channels on the PDIP package). The low-voltage L variant operates from 2.7V to 5.5V, making it suitable for battery-powered designs, with power-down mode current in the microampere range. Technically, the device combines read-while-write ISP FLASH with on-chip debugging support via the SPI serial interface, plus a two-wire (I2C-compatible) interface, USART, and SPI peripherals. The AVR core executes from a single-level pipeline, keeping interrupt latency short and deterministic for real-time tasks. Typical applications include hobbyist and educational boards (the part was long used in Arduino-class hardware), industrial sensor nodes, low-cost motor control, home automation, and small consumer appliances where 8KB of code space is sufficient. Design consideration: choose the crystal frequency conservatively - the L-suffix part is limited to 8 MHz; overclocking above the rated speed grade violates the datasheet and reduces reliability across the 2.7V to 5.5V range. This page adds value beyond the manufacturer datasheet by consolidating distributor pricing, drop-in replacement cross-references, pinout data, and practical design guidance in one place.

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ATMEGA8U2-AU

ATMEGA8U2-AU - 16MHz 8-bit AVR USB MCU 8KB Flash TQFP-32

The Microchip Technology ATMEGA8U2-AU is an 8-bit AVR RISC-based microcontroller with integrated full-speed USB 2.0 transceiver, 8KB in-system programmable Flash, 512B EEPROM, and 512B SRAM, operating at up to 16 MHz and housed in a 32-pin TQFP (7x7 mm) package. The device combines 22 general-purpose I/O lines, 32 working registers, two flexible 16-bit timer/counters, USB Full-Speed (12 Mbps) device interface, USART, SPI, and a 10-bit ADC. Core supply operates from 2.7V to 5.5V, while the USB transceiver can run from the internal 3.3V regulator or an external supply. An AVR (Advanced Virtual RISC) microcontroller is a family of 8-bit RISC cores from Microchip (formerly Atmel) featuring single-cycle instruction execution, a large register file, and Harvard architecture with separate program and data buses. The ATmega family sits at the top of the AVR 8-bit hierarchy, between the ATtiny series (smaller pin counts, less memory) and the AVR XMEGA family (higher performance, 16-bit peripherals). The USB-enabled U2 sub-family adds a built-in full-speed USB transceiver and dedicated endpoint RAM, making these parts the go-to choice for HID, CDC, and vendor-class USB devices where a separate FTDI or CP210x bridge would otherwise be required. Key features of the ATMEGA8U2-AU include hardware USB Full-Speed (12 Mbps) with on-chip transceiver and 176 bytes of dedicated endpoint RAM; 8KB Flash with read-while-write support for bootloader updates; 512B EEPROM and 512B SRAM; six PWM channels, 10-bit ADC, two USARTs (one shared with USB), SPI, and TWI (I2C) peripherals; programmable watchdog timer with internal oscillator; and full -40C to +85C industrial operating range. The TQFP-32 (7x7 mm, 0.8 mm pitch) package is hand-solderable and easy to prototype on TQFP adapter boards. The ATmega8U2 uses a 2-stage pipelined Harvard architecture with 130 instructions, most executing in a single clock cycle at 16 MHz (16 MIPS peak). The on-chip PLL-less USB transceiver uses a 48 MHz internal PLL referenced from an external 8 MHz crystal with specific loading requirements, and the core clock can be derived from the same crystal or the internal 8 MHz RC oscillator. The boot loader section is lockable and can self-program the application Flash via USB, HID, or UART, enabling field-upgradeable firmware without an external programmer. Typical applications include USB HID peripherals (keyboards, mice, game controllers), USB CDC virtual COM ports replacing external bridges, Arduino Uno and Mega 2560 USB interface MCU (this is the original 8U2 used on those boards before the 16U2 update), MIDI USB adapters, and industrial USB sensor nodes. The 16 MIPS performance and USB 2.0 Full-Speed compliance cover most low-bandwidth USB device classes. When designing with the ATMEGA8U2-AU, ensure the USB D+/D- traces are 90-ohm differential and length-matched, place the 22 ohm series termination resistors close to the MCU pins, and use a crystal that meets the USB-clock accuracy spec. For bus-powered designs, the internal 3.3V regulator can supply up to 50 mA to external circuitry; for higher loads, use an external LDO. This page synthesizes distributor pricing, drop-in same-package alternatives (notably the higher-flash ATMEGA32U2-AU), and practical design notes not found in the manufacturer datasheet alone, so engineers can pick the right U2 part number and source it without redesigning their PCB.

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ATMEGA8U2-MU

ATMEGA8U2-MU - 8KB Flash 16MHz AVR USB MCU | Microchip (Tape & Reel)

The Microchip Technology ATMEGA8U2-MU is an 8-bit AVR ATmega microcontroller with 8KB ISP Flash memory, 16 MHz maximum clock frequency, and an integrated full-speed USB 2.0 controller, housed in a 32-pin VQFN (5x5 mm) package with exposed pad. It combines 512B EEPROM, 512B SRAM, and 22 general-purpose I/O lines in a compact surface-mount footprint. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest tier of the embedded systems hierarchy: MCU -> embedded processor -> microprocessor-based system. The ATmega8U2 belongs to the AVR 8-bit RISC family, originally developed by Atmel and now manufactured by Microchip Technology following the 2016 acquisition. Key features include an Advanced RISC architecture with 125 powerful instructions, most executed in a single clock cycle; an on-chip USB controller supporting full-speed 12 Mbps operation; SPI, USART, and USB connectivity options; two flexible timer/counters with compare modes and PWM; and a programmable watchdog timer. The read-while-write Flash capability allows in-system self-programming for field firmware updates. The AVR core executes from an 8KB (4K x 16) Flash array while the built-in USB bootloader enables firmware loading without an external programmer in many designs. Operation spans the industrial temperature range, and the VQFN exposed-pad package provides good thermal and electrical performance for space-constrained designs. Typical applications include USB-to-serial bridge conversion (the ATmega8U2 famously serves as the USB interface chip on Arduino UNO boards), USB HID devices such as keyboards and game controllers, embedded industrial control, and consumer peripherals requiring a low-cost USB-capable MCU. Design consideration: the 8KB Flash and 512B SRAM impose tight budget constraints; use the USB bootloader judiciously and monitor RAM usage for USB endpoint buffers to avoid stack overflow in firmware. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet.

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ATMEGA8U2-MUR

ATMEGA8U2-MUR - 8KB Flash 16MHz AVR USB MCU | Microchip

The Microchip Technology ATMEGA8U2-MUR is an 8-bit AVR ATmega microcontroller with 8KB ISP Flash memory, 16 MHz maximum clock frequency, and an integrated full-speed USB 2.0 controller, housed in a 32-pin VQFN (5x5 mm) package with exposed pad. It combines 512B EEPROM, 512B SRAM, and 22 general-purpose I/O lines in a compact surface-mount footprint. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest tier of the embedded systems hierarchy: MCU -> embedded processor -> microprocessor-based system. The ATmega8U2 belongs to the AVR 8-bit RISC family, originally developed by Atmel and now manufactured by Microchip Technology following the 2016 acquisition. Key features include an Advanced RISC architecture with 125 powerful instructions, most executed in a single clock cycle; an on-chip USB controller supporting full-speed 12 Mbps operation; SPI, USART, and USB connectivity options; two flexible timer/counters with compare modes and PWM; and a programmable watchdog timer. The read-while-write Flash capability allows in-system self-programming for field firmware updates. The AVR core executes from an 8KB (4K x 16) Flash array while the built-in USB bootloader enables firmware loading without an external programmer in many designs. Operation spans the industrial temperature range, and the VQFN exposed-pad package provides good thermal and electrical performance for space-constrained designs. Typical applications include USB-to-serial bridge conversion (the ATmega8U2 famously serves as the USB interface chip on Arduino UNO boards), USB HID devices such as keyboards and game controllers, embedded industrial control, and consumer peripherals requiring a low-cost USB-capable MCU. Design consideration: the 8KB Flash and 512B SRAM impose tight budget constraints; use the USB bootloader judiciously and monitor RAM usage for USB endpoint buffers to avoid stack overflow in firmware. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet.

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ATMEGAS64M1-KH-SV

ATMEGAS64M1-KH-SV - 64KB Rad-Tolerant AVR MCU | Microchip

The Microchip Technology ATMEGAS64M1-KH-SV is a radiation-tolerant 8-bit AVR RISC microcontroller combining 64KB of ISP flash memory with read-while-write capability, 2KB of EEPROM, and 4KB of SRAM, executing at up to 8 MHz in a 32-lead CQFP (ceramic quad flat pack) package. A microcontroller (MCU) is a single-chip embedded computer integrating a processor core, program and data memory, and peripherals such as timers, communication interfaces, and converters. Within this hierarchy, the ATmegaS64M1 sits in the 8-bit AVR ATmega family, itself a member of the broader microcontroller and embedded processing semiconductor category used across aerospace, industrial, and consumer electronics. Key features include near-1 MIPS-per-MHz throughput from the AVR enhanced RISC architecture, an integrated CAN controller for robust bus communication, a 10-channel 10-bit ADC and a 10-bit DAC, a 12-bit Power Stage Controller (PSC) for motor drive applications, plus SPI, UART, and 8-bit/16-bit timers with PWM. These peripherals allow a single low-power device to close control loops and communicate on vehicular or spacecraft buses without external companion ICs. Technically, the ATmegaS64M1 is the radiation-tolerant version of the popular commercial ATmega64M1. It has been developed and manufactured according to the stringent requirements of MIL-PRF-38535 and aerospace specification AEQA0239, with quality and reliability verified through qualification compliant with MIL-PRF-38535 and MIL-STD-883. The ceramic CQFP package and space quality grade address enhanced radiation tolerance, extended temperature, and increased reliability for critical aerospace applications. Typical applications include satellite motor control, remote terminal units, reaction wheel and valve control, CAN-based spacecraft subsystem communication, and other New Space missions that require a small footprint, low power, and rad-tolerant behavior at lower cost than rad-hard devices. Design consideration: the 8 MHz maximum clock keeps throughput modest (roughly 8 MIPS), so algorithm-heavy workloads should be sized carefully, but the single-cycle instruction set and integrated PSC deliver excellent real-time motor-control latency at very low power. This page synthesizes verified distributor data, drop-in family alternatives, and aerospace qualification context not found on distributor listings alone.

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ATMXT112S-MAUR

ATMXT112S-MAUR - 112-Node maXTouch Touch Controller | Microchip

The Microchip Technology ATMXT112S-MAUR is a maXTouch S-Series capacitive touchscreen controller IC with 112 mutual-capacitance sensing nodes, housed in a 32-pin UQFN (4x4 mm) package. It supports screens up to 3.5 inches and delivers smartphone-grade multi-touch performance with integrated noise mitigation for operation in noisy environments. A capacitive touch controller is a mixed-signal IC that measures tiny capacitance changes on a touch sensor grid, converts them into touch coordinates, and communicates them to a host processor. In the system hierarchy, a touchscreen controller sits between the touch sensor (ITO pattern on glass or film) and the host MCU or application processor, forming part of the human-machine interface subsystem alongside display drivers and haptic feedback devices. Key features of the ATMXT112S-MAUR include its 112-node sensing matrix for dense electrode layouts, the maXTouch S-Series architecture optimized for small displays up to 3.5 inches, and an advanced noise mitigation system that rejects interference from display drivers and chargers. The device integrates acquisition logic and post-processing, offloading touch detection from the host CPU. Technically, the maXTouch S-Series uses a proprietary acquisition engine with mutual-capacitance scanning and built-in self-calibration. Configuration data is stored on-chip in nonvolatile memory, and communication with the host uses an I2C-compatible interface. The device supports moisture and gloved-finger handling modes and provides robust reporting rates for responsive user interfaces. Typical applications include feature phone touchscreens, handheld game consoles, digital still cameras, portable GPS navigation devices, and small industrial HMI panels. Any battery-powered product with a 3.5-inch or smaller capacitive display benefits from the low-power touch wake-up and high noise immunity. Design consideration: because touch performance depends strongly on the sensor pattern and panel stack-up, use Microchip's maXTouch configuration tooling and reference sensor designs; improper grounding near display VCOM lines is the most common source of false touches. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMXT1386-Z2UIR

ATMXT1386-Z2UIR - maXTouch 1386-Node Touch Controller | Microchip

The Microchip Technology ATMXT1386-Z2UIR is a capacitive touch screen controller from the maXTouch product platform, implementing a 1386-node multi-chip solution (4 chips) that combines charge-transfer acquisition technology with a powerful 32-bit AVR microcontroller core. It is supplied in a 64-terminal HVQCCN (LCC64) surface-mount package. A capacitive touch controller is an interface IC that measures changes in capacitance across a touch sensor grid, converts those measurements into touch coordinates, and communicates them to a host processor. Within the semiconductor hierarchy it sits under data acquisition ICs, specifically touch screen converters and controllers, and forms part of the broader human-machine interface (HMI) signal chain that includes the sensor glass, the controller IC, and the host firmware. Key differentiating features include the 1386-node acquisition capacity, which supports large-format touch panels with many simultaneous sensing channels; the multi-chip architecture that lets four devices cooperate on a single panel; and the integrated 32-bit AVR processing that performs filtering and gesture detection on-chip, reducing host CPU load. The maXTouch platform firmware can be updated in-system, enabling tuning for different glass stack-ups. The charge-transfer acquisition technique offers strong signal-to-noise performance against display noise, which is important for designs where the touch sensor is integrated into or placed close to an LCD. On-chip AVR computation allows advanced touch features such as multi-touch tracking, palm rejection, and moisture compensation depending on the configured firmware. Typical applications include industrial HMI touch panels, large-format touch screens for appliances and kiosks, medical equipment control surfaces, and embedded systems requiring robust multi-touch input on medium-to-large sensor arrays. A key design consideration is that this device has been discontinued by Microchip; the manufacturer officially recommends the ATMXT1066T2 touch controller as the alternative for new designs, so availability should be confirmed before committing to a BOM. This page synthesizes distributor listings, manufacturer product-page data, and cross-reference findings, including drop-in-replacement guidance and procurement notes not found in the manufacturer datasheet.

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ATMXT1386E-Z2U

ATMXT1386E-Z2U - maXTouch 1386-Node Touch Controller | Microchip

The Microchip Technology ATMXT1386E-Z2U is a capacitive touchscreen controller from the maXTouch product platform, implementing a 1386-node multi-chip solution built from four chips. It combines Atmel's patented QMatrix charge-transfer capacitive sensing method with a powerful 32-bit AVR microcontroller, and supports up to 16 simultaneous touches with fast response time. A capacitive touchscreen controller is a type of sensor interface IC that measures mutual capacitance changes across a touch sensor grid, classifies and tracks finger touches, and reports coordinates to a host processor. Within the system hierarchy, it sits in the signal chain between the touch sensor (a patterned ITO or similar electrode layer on the display) and the host MCU or application processor, forming part of the broader human-machine interface (HMI) subsystem. Key features include the 1386 mutual-capacitance node count, which suits medium-to-large touch panels; the patented charge-transfer acquisition engine, which delivers high signal-to-noise measurement accuracy; and multi-touch tracking of up to 16 touches. The high-performance architecture enables fast response and unlimited-touch reporting up to the 16-touch limit, making the device suitable for demanding interactive displays. Technically, the mXT1386E uses a unique charge-transfer acquisition engine implementing the QMatrix capacitive sensing method patented by Atmel. Coupled with a state-of-the-art 32-bit AVR CPU, the entire touchscreen sensing solution can measure, classify and track finger touches with a high degree of accuracy. As a multi-chip (4-chip) solution, the family coordinates sensing across the node array within one firmware-managed platform. Typical applications include tablet and e-reader touchscreens, industrial HMI panels, and consumer electronics displays requiring robust multi-touch performance with gloved-hand and noise immunity characteristic of the maXTouch platform. Design consideration: this part is a multi-chip solution, so verify board space, mechanical stacking and firmware/configuration compatibility against the replacement controller before redesign. Note that Microchip has officially recommended the ATMXT1066T2 as the alternative touch controller for this family. This page synthesizes distributor sourcing data, the manufacturer-recommended replacement, and practical design notes not found in the manufacturer datasheet.

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ATMXT1386E-Z2UR

ATMXT1386E-Z2UR - maXTouch 1386-Node Touch Controller | Microchip

The Microchip Technology ATMXT1386E-Z2UR is a 1386-node capacitive touch screen controller from the maXTouch product platform, implemented as a multi-chip solution combining four chips that pair charge-transfer acquisition technology with a powerful 32-bit AVR microcontroller core. It supports up to 16 simultaneous touches with fast response, and communicates with the host processor through either an I2C-compatible interface or a USB interface, though only one interface should be used in any single design. A capacitive touch controller is an interface IC that measures changes in capacitance across a touch sensor grid, applies touch-detection and noise-immunity algorithms, and reports touch coordinates to a host MCU or application processor. Within the semiconductor hierarchy it sits under touch screen controllers, a subcategory of sensor interface ICs in the maXTouch family spanning small single-chip solutions up to large multi-chip nodes for large-format touch panels. Key differentiating features include the very high 1386-node sensor channel count, support for up to 16 concurrent touch points, self- and mutual-capacitance charge-transfer acquisition, and dual host communication options (I2C-compatible or USB). The multi-chip architecture scales acquisition bandwidth for large touch panels used in industrial HMI and commercial display designs. Technically, the ATMXT1386E integrates four chips operating as one synchronized controller, with the 32-bit AVR execution core running Microchip's maXTouch firmware for touch detection, palm rejection, and noise filtering. Configuration is typically loaded into EEPROM/flash by the host at power-up, allowing tuning of sensitivity and gesture behavior without firmware changes. Typical applications include large-format industrial touch monitors, commercial kiosks and point-of-information terminals, and multi-touch human-machine interfaces where many sensor nodes and reliable multi-touch detection are required. A key design consideration is that Microchip has flagged this product for end-of-life: the manufacturer-recommended alternative touch controller is the ATMXT1066T2, so new designs should target that device while the ATMXT1386E family remains available for last-time-buy and service inventory. This page synthesizes distributor sourcing, the manufacturer-recommended successor, and practical design guidance not found in the standard datasheet listing.

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ATMXT1386XES-CHPSET2

ATMXT1386XES-CHPSET2 - 1386-Node maXTouch Touch IC | Microchip

The Microchip Technology ATMXT1386XES-CHPSET2 is a 1386-node capacitive touch screen sensor IC solution from the maXTouch product platform, supplied as a multi-chip set of 4 chips. By combining charge-transfer touch sensing technology with a powerful 32-bit AVR microcontroller core, this device delivers large-format projected-capacitive touch detection with Microchip's maXTouch signal-processing algorithms. A capacitive touch controller is a specialized mixed-signal IC that scans a matrix of mutual-capacitance nodes on a touch sensor panel, converts capacitance changes into digital coordinates, and reports touch positions to a host processor over a digital interface. In the product taxonomy, this device belongs to Interface ICs > capacitive touch sensors, which sits within the broader families of human-interface devices, sensor interfaces, and mixed-signal integrated circuits. Key characteristics of the ATMXT1386 family include the 1386-node sensing capacity, an on-chip 32-bit AVR processing core for autonomous touch acquisition, and maXTouch filtering that supports gloved operation, passive stylus, and water-rejection behavior typical of the platform. The XES-CHPSET2 ordering code denotes a chip-set (multi-chip) configuration rather than a single monolithic die, which system designers must account for in PCB partitioning. Technically, the charge-transfer acquisition engine periodically drives and senses the electrode matrix, while the embedded AVR firmware applies noise filtering, baseline tracking, and touch classification. This architecture offloads all touch processing from the host, requiring only configuration data and touch reports over the communication interface. Typical applications include large-format touchscreen displays for industrial human-machine interfaces (HMI), point-of-information kiosks, and other commercial touch systems that previously used this high-node-count controller. A key design consideration: Microchip lists the ATMXT1066T2 as the recommended alternative touch controller for the ATMXT1386, since this multi-chip solution is obsolete and no longer recommended for new designs. This page synthesizes distributor availability data, the manufacturer's recommended migration path, and drop-in alternative analysis not found on the Microchip product page alone.

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ATMXT1664S1-CU

ATMXT1664S1-CU - maXTouch Touchscreen Controller IC | Microchip Technology

The Microchip Technology ATMXT1664S1-CU is a maXTouch capacitive touchscreen controller IC from the maXTouch S-series family, supporting 1664 mutual-capacitance sensing nodes for projected-capacitive touch screens, supplied in a compact surface-mount package with RoHS3-compliant construction. According to distributor listings including DigiKey and Octopart, the device is classified as a Touch Screen Controller (IC SENSOR MAXTOUCH). A capacitive touchscreen controller measures mutual capacitance across a matrix of transmit and receive electrodes on the touch sensor. When a finger or passive stylus approaches the intersection of electrodes, local capacitance changes; the controller scans the matrix, converts the capacitance deltas to touch coordinates, applies gesture and noise filtering, and reports touch data to a host processor over an interface such as I2C or SPI. Touchscreen controllers sit within the broader hierarchy of sensor interface ICs and human-machine interface (HMI) semiconductors. The maXTouch S-series architecture integrates a high-performance acquisition engine with differential charge amplifiers, a configurable scan sequencer, and an embedded MCU core executing Microchip-supplied object-based firmware. Self- and mutual-capacitance fusion enables gloved-hand operation and water rejection, while frequency-hopping acquisition combats charger and display noise - a critical requirement for thin bezel tablets, POS terminals, and automotive HMI panels. Technical strengths of the family include high node counts supporting large-format touch panels, the maXTouch object model allowing configuration of key timings and thresholds via I2C registers, and mature firmware tooling through Microchip's maXTouch studio ecosystem. The S1 model designation reflects the firmware/feature configuration of the 1664-node silicon. Typical applications include 7-inch to 13-inch capacitive touchscreens in tablets, human-machine interfaces for white goods and appliances, point-of-sale and ticketing terminals, smart-home wall panels, and industrial operator panels where multi-touch and robust noise immunity are required. When designing with this controller, allocate a clean low-noise analog supply for the sensing core and route the sensor flex connector away from switching regulators; charger-mode noise often dominates real-world touch performance and must be verified with the intended display and charger pair. This page synthesizes distributor sourcing data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-19.

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ATMXT1664S1-CUR

ATMXT1664S1-CUR - maXTouch 1664-Channel Touch Controller | Microchip

The Microchip Technology ATMXT1664S1-CUR is a maXTouch S Series capacitive touchscreen controller with 1664 mutual-sense channels, built on a 32-bit AVR microcontroller architecture, supplied in a reflow-capable surface-mount package for large-format touchscreen devices. A capacitive touch screen controller is an interface IC that measures capacitance changes across a grid of sensor electrodes to detect finger and stylus positions. Within the system hierarchy, it sits between the raw touch sensor (ITO pattern on glass or film) and the host application processor, converting analog charge-transfer measurements into touch coordinates over a digital interface. The maXTouch family from Microchip (originally Atmel) is a widely adopted line of such controllers used from wearables to large interactive displays. The ATMXT1664S1 belongs to the S Series, which brings the maXTouch architecture to large touchscreen devices. Its 1664 sensing channels support high electrode counts typical of large-format panels, while the integrated 32-bit AVR core performs on-chip acquisition, filtering, and gesture processing, offloading the host processor. Multiple S Series devices can operate simultaneously to drive very large screens, a scalability feature documented by Microchip for this family. The suffix structure of the part number encodes ordering options such as temperature grade and packaging (-CUR indicates a reflow-eligible, RoHS-grade ordering variant per Microchip nomenclature). As with all maXTouch parts, configuration of sensitivity, report rate, and multi-touch behavior is performed via firmware objects downloaded to the controller, allowing one PCB design to be tuned for different sensor stacks. Typical applications include large interactive displays, industrial HMI panels, point-of-information kiosks, and premium consumer touch devices where high channel count and robust noise immunity near displays or chargers are required. A key design consideration is that maXTouch controllers require a configuration file matched to the specific sensor pattern and stack-up; mismatched configurations degrade linearity and report rate. Verify communication with the host over the I2C-compatible interface during bring-up. This page synthesizes distributor availability, Microchip product data, and the manufacturer-recommended replacement ATMXT1664T3 into one reference, adding drop-in alternative guidance and design notes not found in the datasheet alone.

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ATMXT224S-CCUR

ATMXT224S-CCUR - 224-Node Touchscreen Controller | Microchip

The Microchip Technology ATMXT224S-CCUR is a capacitive touch screen controller IC from the maXTouch S-series family, featuring 224 mutual-capacitance sensing nodes and support for 1.5 mm passive stylus operation. It is supplied in a surface-mount package (per manufacturer product page; package variant code CCUR) and is designed for high-performance smartphone and tablet touchscreen applications. A capacitive touch screen controller is an integrated circuit that scans a grid of electrodes embedded in a touch panel, measures mutual capacitance changes caused by finger or stylus contact, and applies proprietary algorithms to convert raw signals into accurate touch coordinates. Within the signal-chain hierarchy, the touch controller sits between the touch sensor (passive ITO electrode matrix) and the host application processor, communicating touch data over an I2C or SPI interface. Key features of the ATMXT224S include 224 sensing nodes supporting touch panels up to roughly 8-9 inches, Microchip's patented capacitive touch technology, and passive stylus support at 1.5 mm tip width. These capabilities enable slim bezels, accurate handwriting input, and multi-touch performance required by premium mobile devices. Technically, the maXTouch S-series integrates a dedicated touch-processing engine with Microchip's noise-suppression algorithms, providing immunity against charger and display noise - a critical requirement as displays and charging circuits inject common-mode interference into touch panels. Typical applications include smartphones, tablet touch panels, portable media players, and industrial human-machine interfaces (HMI) that require multi-touch and stylus input. Important design consideration: Microchip's official product page for ATmXT224S states that the recommended alternative touch controller is the ATMXT336U, and the mXT224S is being superseded; new designs should evaluate the successor family. Firmware/configuration data is programmed into the maXTouch controller at production, so design-in requires Microchip's maXTouch development tools. This page synthesizes verified distributor pricing, lifecycle status, and alternative controller guidance not consolidated in the manufacturer datasheet.

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ATMXT2952T2-C2U

ATMXT2952T2-C2U - maXTouch Touch Controller | Microchip

The Microchip Technology ATMXT2952T2-C2U is a maXTouch capacitive touchscreen controller IC from the mXT2952T2 family, supporting up to 2952 touch channels and display sizes up to 21 inches, aimed primarily at industrial designs and housed in a BGA package. A capacitive touchscreen controller is a mixed-signal IC that measures mutual-capacitance changes across a touch sensor grid, converts the raw charge-transfer measurements into touch coordinates and gesture information, and reports them to a host processor over a digital interface. In the system hierarchy, it sits within the human-interface / data acquisition domain: touchscreen controller -> capacitive touch sensor IC -> sensor interface IC -> mixed-signal semiconductor. Key features of the ATMXT2952T2 family include Microchip's Adaptive Sensing technology, which automatically and intelligently switches between touch operating modes based on the detected object or environment, dynamic touch classification for finger, glove, stylus, and water rejection scenarios, and a debug port for tuning (per Microchip application note QTAN0050 'Using the maXTouch Debug Port'). The device supports I2C host communication; in I2C mode the pull-up resistor on the DBG_SS/GPIO0 shared ball is optional and present only if the ball is used as DBG_SS. The architecture pairs a charge-transfer analog front end with on-chip processing that performs self- and mutual-capacitance scanning, noise filtering, and touch classification. Adaptive Sensing allows the same controller to deliver reliable touch performance on thick cover lenses, in wet conditions, and under EMI conditions typical of industrial panels. Typical applications include industrial HMI touch panels up to 21 inches, factory automation displays, medical equipment screens, and commercial kiosk or point-of-information terminals where gloved-hand and water rejection are required. A key design consideration is the shared DBG_SS/GPIO0 ball: only one of these two functions can be selected, and the circuit must be designed accordingly; consult the manufacturer datasheet and QTAN0050 before finalizing the sensor flex pin mapping. Note that Microchip identifies ATMXT2952TD as the recommended alternative touch controller for the ATMXT2952T2, which is relevant for new designs and long-term supply planning. This page synthesizes distributor availability, the recommended replacement, and design guidance not consolidated in the manufacturer datasheet.

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ATMXT336S-MAUR

ATMXT336S-MAUR - 336-Node Touchscreen Controller IC | Microchip

The Microchip Technology ATMXT336S-MAUR is a maXTouch 336-node mutual-capacitance touchscreen controller IC designed for high-performance smartphones and mobile devices, delivered in a reel-packaged surface-mount package (MAU suffix). A capacitive touchscreen controller is a mixed-signal IC that drives and senses a grid of mutual-capacitance nodes on a touch panel, converts raw capacitance changes into digitized touch coordinates, and reports gesture data to a host processor. Within the power management and human-interface hierarchy, it sits between the passive touch panel and the application processor, forming part of the sensor and interface IC layer of a mobile system. Key features include 336 mutual-capacitance sensing nodes, support for 2.0 mm passive stylus input, moisture robustness for wet-finger tracking, and superior electrical noise immunity for operation in hostile AC-charger and display-noise environments, according to the Microchip product page. The maXTouch architecture uses patented capacitive touch acquisition technology with on-chip signal processing, enabling high signal-to-noise ratio touch reporting at high report rates. This makes the mXT336S well suited to dense sensor patterns on thin phone form factors where water rejection and stylus resolution are critical differentiators. Typical applications include premium smartphone touchscreens, small-to-medium tablet and phablet panels, and portable consumer devices requiring passive stylus support and wet-hand operation. When designing with the mXT336S, confirm panel node count and pin mapping against the maXTouch family configuration, and note that Microchip officially recommends the ATMXT336U as the alternative touch controller for this part. This page synthesizes verified distributor pricing, the Microchip-recommended alternative, drop-in family options, and practical sourcing guidance not consolidated in the manufacturer datasheet alone.

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