ATMEGA165-16AI - 8-bit AVR MCU 16KB Flash 16MHz 64-TQFP | Microchip
部品番号: ATMEGA165-16AI ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.7 | $47.00 |
| 100 | $4.15 | $415.00 |
| 500 | $3.8 | $1,900.00 |
| 1,000 | $3.45 | $3,450.00 |
ATMEGA165-16AI 概要
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power management and embedded control hierarchy, the ATmega family sits in the general-purpose MCU class, bridging small 8-pin AVRs and larger 128KB devices. The ATmega165 is the non-LCD sibling of the ATmega169, sharing the same core, memory map and 64-pin TQFP footprint.
Key features include 130 powerful instructions with mostly single-cycle execution, eight general-purpose 8-bit working registers, fully static operation, and up to 16 MIPS throughput at 16MHz. The part provides in-system programmable FLASH with optional boot-code section for in-application programming, plus JTAG boundary-scan and on-chip debugging support typical of the ATmega165/169 device family.
Architecturally, the ATmega165 uses the AVR enhanced RISC pipeline with a single-level instruction fetch/decode stage, allowing one instruction per clock cycle for most opcodes. Program memory is organized as 8K x 16 bits, and the chip integrates SRAM, EEPROM, timers, USART serial port, SPI interface, an 8-channel 10-bit ADC, and multiple low-power sleep modes that make it well suited to battery-operated designs.
Typical applications include industrial control panels, sensor front ends and data loggers, HVAC and building automation nodes, and legacy embedded systems that require a proven 8-bit platform with ISP field upgrades. The 64-pin TQFP gives generous I/O count for keypads, displays and peripheral expansion.
When designing with the ATMEGA165-16AI, verify the supply voltage range against the specific datasheet table for this speed/temperature grade, decouple VCC and AVCC separately, and use the ISP interface (via the SPI pins) for production programming. Keep the JTAG pins in mind if boundary scan is required, as they double as general-purpose port pins after fuse programming.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing and stock references as of 2026-09-16.
ドロップイン代替品: ATMEGA165-16AI — 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: ATMEGA165-16AI （同一形状・フットプリント） — 相違点: Instruction Set, Package, EEPROM, Core Processor, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA165-16AU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATMEGA165A-AU
✅ ドロップイン✓ 在庫あり
$3.47 / 個
データシートを見る →ATMEGA165PA-AU
✅ ドロップイン✓ 在庫あり
$2.05 / 個
データシートを見る →ATMEGA165V-8AU
✅ ドロップイン✓ 在庫あり
$3.12 / 個
データシートを見る →ATMEGA169-16AU
✅ ドロップイン✓ 在庫あり
$3.6 / 個
データシートを見る →ATMEGA169-16AI
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →ATMEGA165-16AI 最大定格＆電気的特性
| Core Architecture | AVR enhanced RISC, 8-bit |
| Flash Memory | 16 KB (8K x 16) In-System Programmable |
| 最大クロック周波数 | 16 MHz |
| Peak Throughput | 16 MIPS (at 16 MHz) |
| Instruction Set | 130 instructions, most single-cycle |
| Working Registers | 8 x general purpose 8-bit registers |
| パッケージ | 64-TQFP (14 x 14 mm) |
| 実装タイプ | Surface Mount |
| 動作温度 | -40C to +85C (Industrial) |
| Debug/Scan | JTAG on-chip debug and boundary scan (per family datasheet) |
| Programming | In-System Programmable (ISP) via SPI |
ATMEGA165-16AI 64-tqfp (14 x 14 mm) ピン配置ガイド
ATMEGA165-16AI (64-tqfp (14 x 14 mm) 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: ATMEGA165-16AI.
詳細は データシート をご参照ください。
主な用途
ATMEGA165-16AI の用途: 6 件s: Industrial Control Panels, Sensor Nodes and Data Loggers, HVAC and Building Automation, Legacy Embedded System Maintenance, Consumer Appliance Control, Test and Measurement Fixtures.
Industrial Control Panels
The ATMEGA165-16AI's -40C to +85C industrial temperature grade and deterministic AVR RISC core make it a strong fit for industrial control panels that sequence relays, read keypads and drive status indicators. The 64-pin TQFP exposes ample GPIO for front-panel I/O, while the 16KB ISP FLASH accommodates typical control firmware with headroom for field updates via a boot-loader. Its USART and SPI interfaces link to HMI expanders, EEPROM logging and RS-485 transceivers, and single-cycle instruction execution provides predictable scan timing for debounce loops and timing-critical interlocks without an RTOS.
おすすめ
Sensor Nodes and Data Loggers
For battery-backed sensor nodes, the ATmega165 family's fully static core and multiple sleep modes let the ATMEGA165-16AI idle between acquisition cycles, while the on-chip ADC digitizes analog sensors without an external converter. The 16MHz grade provides throughput headroom for filtering and scaling in firmware, and the SPI bus interfaces to SD-card or serial-FLASH logging media. The 64-TQFP footprint supports multi-channel analog front ends, and the picoPower ATMEGA165PA-AU drop-in offers a low-power redesign path without PCB changes when battery life becomes a constraint.
おすすめ
HVAC and Building Automation
Building automation controllers benefit from the ATMEGA165-16AI's combination of 16KB ISP FLASH for protocol stacks, USART for RS-485 MODBUS-style links, and generous port count for damper drives, valve outputs and sensor inputs on one 64-TQFP device. The industrial temperature rating covers rooftop and mechanical-room environments, and in-system programmability allows firmware updates of installed units through the boot-loader without removing controllers from the wall. Deterministic 16 MIPS execution supports fixed-time-step PID loops for temperature control with stable, jitter-free timing.
おすすめ
Legacy Embedded System Maintenance
Many installed AVR-based boards were designed around the original ATmega165 die; the ATMEGA165-16AI serves form-fit-function maintenance of those systems. Verified cross-references show ATMEGA169-16AU as a complete replacement with consistent terminals and package, and the ATMEGA165A/PA revisions as newer-silicon drop-ins, giving procurement several sourcing lanes when the original grade is constrained. Because the instruction set and pinout are unchanged, existing HEX images program identically via SPI ISP, minimizing requalification for repair-and-continue production of legacy equipment.
おすすめ
Consumer Appliance Control
Appliance control boards - coffee machines, washing-machine user interfaces, small heater controllers - historically used 64-pin ATmega devices for their keypad matrices, LED columns and triac-driving port count. The ATMEGA165-16AI supplies 16 MIPS for UI scanning, the ADC for NTC temperature sensing, and the USART for service-diagnostic links, all on one 64-TQFP (14x14 mm) footprint. Where mains zero-cross timing drives triacs, single-cycle instruction execution keeps interrupt latency low. The 16AU commercial-grade sibling can be chosen where the ambient profile permits, reducing cost in consumer housings.
おすすめ
Test and Measurement Fixtures
Bench fixtures and automated test equipment often pair an ATmega-class MCU with instrumentation interfaces. The ATMEGA165-16AI's JTAG boundary-scan capability supports board-level interconnect testing during fixture development, while the SPI and USART ports drive DACs, digitizers and PC links. The 16KB ISP FLASH holds fixture sequences that can be field-reprogrammed as products change, and the industrial temperature grade keeps fixtures stable in non-climate-controlled production areas. The shared 64-TQFP footprint with ATMEGA169 variants lets one fixture PCB serve multiple firmware builds.
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: ATMEGA165-16AI — 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 | ATMEGA165-16AU | ATMEGA165A-AU | ATMEGA165PA-AU | ATMEGA165V-8AU | ATMEGA169-16AU |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Flash Memory | 16 KB ISP FLASH | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz | 16 MHz |
| LCD Controller | No | No | No | No | No | Yes (integrated LCD driver) |
| Power Technology | Standard AVR core | Standard AVR core | Standard AVR core (A revision) | picoPower (lower sleep current) | V-grade wide/lower voltage range | Standard AVR core |
| Drop-in Compatibility | Reference part | Yes - same die, temp grade differs | Yes - newer silicon revision | Yes - picoPower revision | Yes - 8MHz max, verify firmware | Yes - FindIC: complete replacement |
主な差別化要因
- Industrial temperature grade without LCD overhead （vs ATMEGA169-16AU)
- Full 16MHz throughput on original die （vs ATMEGA165V-8AU)
- Newer-silicon sourcing flexibility （vs ATMEGA165A-AU / ATMEGA165PA-AU)
設計ノート
Verify the supply voltage window for the -16AI speed/temperature grade directly in the ATmega165 datasheet tables before fixing the rail; AVR '16' grades and 'V' grades have different voltage ranges, and running a non-V grade below its specified minimum can cause unstable execution at 16MHz. Decouple VCC and AVCC independently with 100nF ceramics placed within 5mm of the pins, and connect AVCC to VCC through a low-pass LC filter when the ADC is active to protect the 10-bit converter from digital rail noise.
On the 64-TQFP (14x14 mm) land pattern, bring the ISP pins (MOSI, MISO, SCK, RESET, VCC, GND) to a tagged header or test pads, since all production programming and boot-loader recovery happens through SPI ISP. If JTAG boundary scan or on-chip debug is planned, route the four JTAG pins to a 2x5 header; otherwise they can be fuse-disabled and reused as port pins. Keep crystal traces for XTAL1/XTAL2 short (under 15mm) with guard ground for reliable 16MHz operation.
A frequent migration pitfall: the pin-compatible ATMEGA169-16AU adds an LCD controller whose pins overlap port pins on the ATmega165; firmware that drives those ports as general-purpose I/O will still work, but verify that no fuse defaults enable the LCD block after swap. Also confirm each candidate revision (A, PA) errata sheet before production - silicon revisions can change timer and USART edge behavior. Finally, reserve RESET as programming-only; disabling RESET for GPIO use complicates ISP recovery.
コンプライアンス情報
Compliance status not stated in the provided verified web data; confirm on the Microchip product compliance page before specification.