ATTINY817-MF - 20MHz 8KB AVR MCU | Microchip Technology
部品番号: ATTINY817-MF ✓ 生産中ATTINY817-MF 概要
An 8-bit microcontroller is a compact embedded processor designed to execute control logic, monitor inputs, and operate peripherals without a separate external processor. The ATTINY817 belongs to the tinyAVR 1-series, combining an AVR CPU with hardware multiplier, Event System, SleepWalking, and picoPower technology in an integrated mixed-signal platform.
The device provides 8 KB of Flash for program storage, 512 bytes of SRAM for working data, and 128 bytes of EEPROM for nonvolatile parameter retention. Its hardware multiplier supports efficient multiplication in control and signal-processing routines, while the 20 MHz maximum clock frequency provides additional timing headroom for mixed peripheral workloads.
Core Independent Peripherals allow hardware events to trigger timer, communication, and analog operations without continuous CPU intervention. This event-driven architecture can reduce software polling, improve response timing, and support low-power designs that combine active processing with sleep modes and SleepWalking behavior.
Typical uses include compact sensor controllers, industrial monitoring modules, communication equipment, LED-control systems, and compact consumer-control boards. The 24-pin VQFN footprint is particularly useful where PCB area is constrained and a surface-mount production process is preferred.
When laying out the board, follow the exact exposed-pad, thermal-pad, and decoupling guidance in the manufacturer datasheet. Preserve the specified UPDI programming access, validate analog and communication signal routing, and use the exposed pad as intended for electrical and thermal performance.
This product record combines verified manufacturer specifications, current distributor availability, drop-in family alternatives, and application-focused design guidance. It provides the technical and purchasing context needed to evaluate ATTINY817-MF for an embedded control design without relying on raw distributor listings alone.
ドロップイン代替品: ATTINY817-MF — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATTINY817-MF （同一形状・フットプリント） — 相違点: Package, Product Type.
ATTINY817-SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY817-SH
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY816-MF
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY814-MF
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY816-SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY817-MF 最大定格＆電気的特性
| Product Type | 8-bit AVR RISC microcontroller |
| Series | tinyAVR 1-series |
| 最大クロック周波数 | 20 MHz |
| Flash Memory | 8 KB |
| SRAM | 512 bytes |
| EEPROM | 128 bytes |
| Supply Voltage Range | 4.5 V to 5.5 V |
| 動作温度範囲 | -40°C to +125°C |
| パッケージ | 24-pin VQFN with exposed pad |
| ピン数 | 24 pins |
| CPU Architecture | AVR with hardware multiplier |
| Program Memory Type | Flash |
| Nonvolatile Data Memory | 128-byte EEPROM |
| 実装タイプ | Surface mount |
| Shipping Container | Tray |
| Core Independent Peripherals | Supported |
| Event System | Supported |
| SleepWalking | Supported |
| Technology | picoPower |
| Programming Interface | UPDI |
ATTINY817-MF 24-pin vqfn with exposed pad ピン配置ガイド
ATTINY817-MF (24-pin vqfn with exposed pad パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATTINY817-MF.
詳細は データシート をご参照ください。
主な用途
ATTINY817-MF の用途: 6 件s: Industrial Sensor Monitoring, Compact Communication Controller, LED and Illumination Control, Battery-Powered Portable Control, Security and Access-Control Module, Precision Analog Control.
Industrial Sensor Monitoring
The ATTINY817-MF fits compact industrial sensor-monitoring modules because its 20 MHz AVR processor can sample control signals, supervise thresholds, and manage digital interfaces while the 8 KB Flash accommodates application firmware. The 512-byte SRAM supports working state and the 128-byte EEPROM retains calibration or configuration values. Its verified -40°C to +125°C range supports equipment operating beyond typical commercial temperatures. Core Independent Peripherals can also handle timer or communication events without continuous polling, improving response time and reducing processor load.
おすすめ
Compact Communication Controller
ATTINY817-MF is appropriate for small communication controllers that coordinate sensors, indicators, and a host interface. Its 20 MHz operating frequency provides processing headroom, while the family’s Event System and Core Independent Peripherals support event-driven handling of timer, serial, and external signals. The 8 KB Flash and 512-byte SRAM are suitable for compact protocol stacks and state machines rather than large buffering workloads. The 24-pin VQFN package also helps reduce board area in space-constrained gateway or control modules.
おすすめ
LED and Illumination Control
The ATTINY817-MF can control addressable or multi-channel LED systems where timing accuracy, compactness, and autonomous operation matter. A 20 MHz AVR core supports timer-based updates and effect sequencing, while the hardware multiplier assists calculation-heavy control routines. Its 8 KB Flash provides space for firmware and lookup data, and the 128-byte EEPROM can hold settings that should survive power removal. The 24-pin VQFN footprint supports compact lighting modules without requiring a large through-hole package.
おすすめ
Battery-Powered Portable Control
ATTINY817-MF supports portable and battery-powered control products when the power architecture maintains the verified 4.5 V to 5.5 V supply range. The tinyAVR 1-series incorporates picoPower technology, sleep modes, and SleepWalking, enabling firmware to reduce active time or react to selected events while peripheral functions continue. The 8-bit architecture also avoids the power and cost burden of a larger processor in simple controls. Actual battery life remains application-dependent because regulator efficiency, wake frequency, analog usage, and external load were not quantified in the supplied data.
おすすめ
Security and Access-Control Module
ATTINY817-MF can serve as the controller in compact access-control, keypad, or interlock modules where deterministic state management and multiple digital inputs are required. Its 20 MHz clock supports responsive debouncing and event sequencing, while 8 KB Flash accommodates control logic and the 128-byte EEPROM retains basic configuration. The family’s event-driven peripherals can reduce the need for continuous software polling. Package-level security qualification, cryptographic capability, and tamper-resistance requirements are not stated in the supplied verified data and must be evaluated separately.
おすすめ
Precision Analog Control
ATTINY817-MF is suitable for small mixed-signal control products combining analog supervision with digital processing. The 20 MHz AVR processor can perform closed-loop updates, filtering, and threshold decisions, while the tinyAVR 1-series is described as providing accurate analog features and Core Independent Peripherals. The 8 KB Flash and 512-byte SRAM support compact control algorithms and buffers. An external precision reference such as the TCA4311 can support more demanding measurement accuracy, although the target’s detailed ADC, reference, and converter parameters were not included in the supplied excerpts.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATTINY817-MF — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATTINY817-SS | ATTINY817-SH | ATTINY816-MF | ATTINY814-MF | ATTINY816-SS |
|---|---|---|---|---|---|---|
| Package | 24-pin VQFN with exposed pad | 24-pin VQFN with exposed pad | 24-pin VQFN with exposed pad | 24-pin VQFN with exposed pad | 24-pin VQFN with exposed pad | 24-pin VQFN with exposed pad |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Upper Operating Temperature | +125°C | +85°C | +105°C | +125°C | +125°C | +85°C |
| Special Features | Event System, SleepWalking, Core Independent Peripherals, picoPower | Same tinyAVR 1-series feature platform | Same tinyAVR 1-series feature platform | Family member with different peripheral-instance availability | Family member with fewer peripheral instances | Family member with different peripheral-instance availability |
主な差別化要因
- Higher verified temperature limit （vs ATTINY817-SS)
- Additional temperature-grade headroom （vs ATTINY817-SH)
- Higher family position with 8 KB Flash and 512-byte SRAM （vs ATTINY814-MF)
設計ノート
Use the exposed-pad land pattern and thermal design specified in the Microchip ATtiny417/817 manufacturer datasheet DS40001901C. Place the required input and decoupling capacitors close to their associated supply pins, minimize return-path impedance, and provide a continuous ground reference beneath the device where the package drawing permits. Do not substitute a generic QFN footprint without checking pad dimensions and exposed-pad construction.
Preserve access to the UPDI programming interface and keep programming and debug routing away from sensitive analog and communication nets. If analog inputs are used, separate them from switching-node and high-current return paths, and verify grounding under the intended operating conditions. The verified search excerpts do not provide the complete pin map or analog routing guidance, so the manufacturer package and circuit diagrams must govern the final layout.
Design the supply for the verified 4.5 V to 5.5 V operating range and verify startup, reset, and brownout behavior in the complete system. Because low-power battery operation was not quantified, calculate the complete load-current budget from the MCU, external regulator losses, pull networks, LEDs, sensors, and communications. Validate both average current and peak current rather than relying only on the microcontroller’s sleep-mode specification.
Do not treat family-level pin compatibility as proof that every alternative is a transparent firmware replacement. Microchip states that vertical migration can preserve code, while downward migration may require changes when fewer peripheral instances are available. Before substituting ATTINY814-MF, ATTINY816-MF, or ATTINY816-SS, audit timer channels, comparator and ADC resources, communication instances, interrupt vectors, pin multiplexing, package exposure, and temperature requirements.
コンプライアンス情報
The supplied verified snippets identify a green industrial-temperature device, but they do not explicitly establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been inferred from the product family name.
