ATTINY817-MN - 20MHz TinyAVR MCU, 8KB Flash | Microchip
N.º da peça: ATTINY817-MN ✓ AtivoATTINY817-MN Visão geral
An 8-bit microcontroller is a compact embedded-processing device that executes firmware from embedded Flash memory and controls peripherals through digital and analog inputs and outputs. The ATTINY817 belongs to the tinyAVR 1-series hierarchy, combining the AVR processor with hardware multiplier, Event System, SleepWalking, and power-conscious operation. Its 8 KB Flash capacity makes it suitable for compact control tasks rather than storage-intensive connected applications.
The 20 MHz operating rate provides practical performance for event handling, timer-based control, communications, and analog signal conditioning. Memory resources include 8 KB of Flash, 512 bytes of SRAM, and 128 bytes of EEPROM for data that must retain its value when power is removed. The 24-QFN 4 x 4 mm package supports compact surface-mount layouts, while the exposed-pad construction listed by Arrow provides a thermal and electrical land-pattern requirement that must be handled in PCB layout.
Microchip describes the ATtiny817 as a Functional Safety microcontroller in the distributor listing, with the ATTINY817 family built around the 8-bit AVR processor and Core Independent Peripherals. The product family also includes flexible, low-power architecture and SleepWalking functionality. Exact peripheral counts, converter performance, and operating limits were not included in the supplied search records and must be confirmed in the manufacturer datasheet before design sign-off.
Typical uses include compact industrial controllers, sensor-conditioning nodes, compact motor-control peripherals, low-power sensing equipment, and small embedded modules. The 20 MHz clock and 512-byte SRAM suit lightweight control loops, while Event System support can reduce CPU involvement in peripheral-driven workflows.
A critical layout consideration is the 24-QFN thermal pad and exposed ground or thermal connection specified by the manufacturer. Confirm pad geometry, pin assignments, decoupling requirements, and exposed-pad connection in the datasheet before releasing artwork. Also verify whether the -MN temperature and qualification requirements satisfy the end application's environmental needs.
This product record consolidates verified manufacturer and distributor information, current pricing context, same-package functional alternatives, and engineering selection guidance. It distinguishes confirmed facts from specifications that still require datasheet confirmation, supporting faster procurement and engineering review without substituting unsupported assumptions.
Alternativas drop-in para ATTINY817-MN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATTINY817-MN (mesmo formato e footprint) — diferindo em Package, Product Type.
ATTINY817-MF
✅ Drop-InConsulte o preço
Ver ficha técnica →ATTINY817-MFR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATTINY817-MB-VAO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATTINY817-MZT-VAO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATTINY817-MNR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATTINY817-MN Classificações máximas e características elétricas
| Product Type | 8-bit AVR tinyAVR 1-series microcontroller |
| Maximum CPU Frequency | 20 MHz |
| Flash Memory | 8 KB |
| SRAM | 512 bytes |
| EEPROM | 128 bytes |
| Processor Architecture | 8-bit AVR with hardware multiplier |
| Encapsulamento | 24-QFN, 4 x 4 mm |
| Contagem de pinos | 24 pins |
| Tipo de montagem | Surface mount |
| Tensão de alimentação | 3.3 V or 5 V |
| Device Operating Voltage | 1.8 V to 5.5 V |
| Industrial Temperature Rating | Up to 105 °C |
| Core Independent Peripherals | Supported |
| Event System | Supported |
| SleepWalking | Supported |
| Functional Safety | Functional Safety microcontroller designation |
| Manufacturer Part Family | ATtiny817 |
Guia de Configuração de Pinos do ATTINY817-MN 24-qfn, 4 x 4 mm
Configuração de pinos para ATTINY817-MN (pacote 24-qfn, 4 x 4 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para ATTINY817-MN.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ATTINY817-MN é adequado para 6 aplicaçãos: Compact Industrial Sensor Controller, Low-Power IoT Sensing Node, Compact Motor and Actuator Control, Battery-Powered Measurement Module, Communications Interface and Protocol Bridge, Small Form-Factor Control Module.
Compact Industrial Sensor Controller
The ATTINY817-MN fits compact sensor-conditioning and threshold-control modules because its 20 MHz AVR core can combine peripheral processing with a deterministic control loop, while 512 bytes of SRAM and 128 bytes of EEPROM support working state and retained parameters. Its 24-QFN 4 x 4 mm package reduces board area where enclosure space is limited. The device is placed beside the sensor circuitry to acquire analog or digital inputs, run filtering and control logic, and drive alarms, indicators, or downstream communications. The main constraint is firmware capacity: only 8 KB of Flash is available, so diagnostics, protocol stacks, and expansion features must be budgeted carefully.
Recomendado
Low-Power IoT Sensing Node
ATTINY817-MN is appropriate for a small IoT sensing node that periodically reads inputs, performs local filtering, and wakes a communications interface only when data needs transmission. The tinyAVR family's low-power architecture and SleepWalking support are relevant to reducing unnecessary processor activity, while the 20 MHz operating rate allows more computation between sleep events. Its 128 bytes of EEPROM can retain limited configuration values across power cycles, and 512 bytes of SRAM is adequate for compact buffers. The 8 KB Flash limit, however, constrains radio stacks and security code, so protocol complexity must be evaluated before the MCU is selected for the final design.
Recomendado
Compact Motor and Actuator Control
The ATTINY817-MN can serve as the local controller in a compact actuator or motor peripheral where pulse timing, digital feedback, and safety-oriented state handling must run close to the machine. Its 20 MHz processor provides more timing margin than an 8 MHz-class controller, and the 24-pin package exposes a practical mix of I/O for position sensing and command inputs. Core Independent Peripherals and the Event System may reduce CPU intervention for synchronized peripheral events. Firmware must be kept within the verified 8 KB Flash limit, while motor-current protection and thermal management remain functions of the surrounding power stage.
Recomendado
Battery-Powered Measurement Module
ATTINY817-MN suits a battery-powered measurement module because its 1.8 V to 5.5 V device operating range accommodates common low-energy rails, while the tinyAVR family's SleepWalking and low-power architecture support duty-cycled operation. The microcontroller can sample inputs, retain calibration or threshold data in 128 bytes of EEPROM, and avoid continuous CPU activity when measurements are not required. The 8 KB Flash and 512-byte SRAM resources are adequate for compact algorithms but not large data histories. Power-budget calculations must use the official datasheet's actual sleep, active, and analog-current values rather than inferred figures.
Recomendado
Communications Interface and Protocol Bridge
ATTINY817-MN can act as a compact protocol bridge or command interface when the design must combine serial control with limited local logic. Its 20 MHz AVR core provides useful headroom for framing, checksums, state machines, and peripheral coordination, while 512 bytes of SRAM can support modest packet buffers. The available 8 KB Flash should be allocated carefully to the selected protocol and optional Functional Safety checks. Event System and Core Independent Peripherals can assist with deterministic peripheral operations. Before schematic release, confirm the required USART, SPI, I2C, timer, and pin-mux resources against the official ATtiny417/817 datasheet.
Recomendado
Small Form-Factor Control Module
ATTINY817-MN is well matched to a small form-factor module where the 24-QFN 4 x 4 mm footprint preserves board area and the 20 MHz processor supplies useful control performance without moving to a larger MCU. The device can manage local inputs, outputs, retained settings, and timing functions while occupying little routing area. Its 512-byte SRAM and 8 KB Flash are suitable for dedicated control logic, although larger application firmware or multiple communication protocols may exceed the budget. The exposed-pad structure must be connected exactly as directed by Microchip, and the compact package can increase assembly and inspection difficulty on very small boards.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATTINY817-MN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATTINY817-MF | ATTINY817-MFR | ATTINY817-MB-VAO | ATTINY817-MZT-VAO | ATTINY817-MNR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) |
| CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Core Architecture | 8-bit AVR with hardware multiplier | 8-bit AVR tinyAVR 1-series | 8-bit AVR tinyAVR 1-series | 8-bit AVR tinyAVR 1-series | 8-bit AVR tinyAVR 1-series | 8-bit AVR tinyAVR 1-series |
Principais diferenciais
- Compact 20 MHz processing in a 4 x 4 mm footprint (vs ATTINY817-MF)
- Industrial-oriented ordering option (vs ATTINY817-MFR)
- Functional-safety-focused tinyAVR 1-series positioning (vs ATTINY817-MB-VAO)
Notas de projeto
Treat the exposed pad as a mandatory layout feature rather than an unused center pin. Follow the ATtiny417/817 datasheet land pattern, exposed-pad dimensions, and solder-mask and paste recommendations exactly. Place decoupling capacitance adjacent to the applicable supply pins and keep the thermal-pad connection free of unintended isolation. Because the supplied records do not include the complete pin table, do not infer pad connections or pin multiplexing from a generic 24-QFN footprint.
The verified device operating range is 1.8 V to 5.5 V, while Arrow describes the ATTINY817-MN as a 3.3 V or 5 V device. Select the power rail and external components for the exact operating condition required by the complete datasheet. If the design uses SleepWalking, calculate average current from the measured or datasheet sleep and active currents rather than the maximum clock frequency alone. The provided data does not include quiescent-current or analog-current values, so those figures remain verification items.
The 8 KB Flash limit is the most likely design constraint in firmware planning. Reserve space for startup code, bootloader behavior, Functional Safety checks, communication protocols, and application logic before fixing the feature set. Avoid assuming that an ATtiny417 pin-compatible migration preserves every peripheral instance: Microchip states that downward migration may require code modification when fewer peripheral instances are available.
The compact 4 x 4 mm QFN can couple heat into the exposed pad, so thermal performance depends on the PCB copper and surrounding airflow. Use the manufacturer's recommended exposed-pad layout and assess junction temperature against the selected temperature grade, which Mouser lists for the -MN version as industrial and up to 105 °C. The supplied records do not provide junction-temperature, thermal-resistance, or package-power figures; obtain them from the official datasheet before setting operating current or ambient-temperature limits.
Informações de conformidade
Mouser identifies the ATTINY817-MN as Green, but the supplied records do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. These fields remain unknown rather than inferred.
