ATMEGA165PA-AUR - 16KB Flash 8-Bit AVR MCU 64-TQFP | Microchip
부품 번호: ATMEGA165PA-AUR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.95 | $19.50 |
| 100 | $1.78 | $178.00 |
| 500 | $1.65 | $825.00 |
| 1,000 | $1.54 | $1,540.00 |
ATMEGA165PA-AUR 개요
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in the broader microcontroller unit (MCU) family that integrates CPU, nonvolatile program memory, SRAM data memory, peripherals, and I/O on a single die. Within the power-management hierarchy of embedded systems, MCUs such as the ATmega165PA sit at the control layer, executing firmware that manages sensors, displays, communication links, and actuators.
Key features include the Advanced RISC Architecture with 133 powerful instructions, most executing in a single clock cycle; 32 general-purpose working registers; read-while-write Flash for self-programming; and the picoPower technology that reduces power consumption in sleep modes. These attributes make the device well suited to low-power, code-space-constrained designs that still need substantial peripheral capability.
On the technical side, the ATmega165PA provides a rich peripheral set typical of the ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P family covered by the Microchip (Atmel) 8285 datasheet, including 8/16-bit timers, USART, SPI, and analog-to-digital conversion channels routed to the 54 I/O ports. In-circuit debugging and In-Circuit Serial Programming (ICSP) are supported via MPLAB Snap through two I/O pins and the reset line.
Typical applications include industrial control and automation nodes, LCD-instrumentation front ends, and portable or battery-powered devices where the picoPower sleep modes extend operating life.
A key design consideration: the PA suffix denotes the picoPower variant - firmware power-management registers differ from the non-picoPower ATmega165P, so verify sleep-mode configuration when migrating. Always pair a 0.1 uF decoupling capacitor at each VCC/GND pin pair.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: ATMEGA165PA-AUR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ATMEGA165PA-AUR (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature, Timers, Instruction Set, Flash Memory.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ATMEGA165PA-AU
✅ 드롭인✓ 재고 있음
$2.05 / 개
데이터시트 보기 →ATMEGA165A-AU
✅ 드롭인✓ 재고 있음
$3.47 / 개
데이터시트 보기 →ATMEGA165P-16ANR
✅ 드롭인✓ 재고 있음
$2.18 / 개
데이터시트 보기 →ATMEGA169PA-AUR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ATMEGA169A-AU
✅ 드롭인✓ 재고 있음
$2.98 / 개
데이터시트 보기 →ATMEGA165PA-AUR 최대 정격 & 전기적 특성
| Core Architecture | AVR 8-bit RISC |
| 데이터 버스 폭 | 8 Bit |
| 최대 클록 주파수 | 16 MHz |
| Flash Memory Size | 16 KB (8K x 16) ISP Flash |
| EEPROM Size | 512 B |
| SRAM Size | 1 KB |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Number of I/O Lines | 54 general purpose I/O |
| Instruction Set | 133 powerful instructions, most single-cycle |
| Working Registers | 32 general purpose registers |
| Low Power Technology | picoPower |
| 패키지 | 64-TQFP, 14 x 14 mm, 1 mm height |
| 실장 유형 | Surface Mount (Gull Wing) |
| Temperature Grade | Industrial |
| Programming / Debug | ICSP and in-circuit debug via MPLAB Snap |
| Lifecycle Stage | ACTIVE |
ATMEGA165PA-AUR 64-tqfp, 14 x 14 mm, 1 mm height 핀 구성 가이드
ATMEGA165PA-AUR(64-tqfp, 14 x 14 mm, 1 mm height 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: ATMEGA165PA-AUR.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ATMEGA165PA-AUR 적합 용도: 6 애플리케이션s: Industrial Control and Automation Nodes, Battery-Powered Portable Instrumentation, LCD-Based Instrumentation Front Ends, Sensor Nodes and IoT Edge Devices, Embedded Systems Education and Prototyping, Motor Control and Appliance Subsystems.
Industrial Control and Automation Nodes
The ATMEGA165PA-AUR fits industrial control nodes because its 54 general-purpose I/O lines and 16 MHz 8-bit RISC core handle digital I/O expansion, relay sequencing, and sensor polling in a single 64-TQFP device. Its 2.7 V to 5.5 V supply range tolerates noisy 5 V industrial rails, while the industrial temperature grade covers factory-floor ambients. In a typical node, the MCU reads discrete inputs, drives outputs through the Port D buffers' symmetrical sink/source capability, and reports over USART. The 16 KB ISP Flash with read-while-write support permits field firmware updates over the communication link without stopping the control loop, reducing maintenance downtime in deployed automation equipment.
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Battery-Powered Portable Instrumentation
The picoPower technology on the ATMEGA165PA-AUR is the decisive factor for battery-powered instruments: sleep-mode currents are significantly lower than the non-picoPower ATmega165A, extending operating life in duty-cycled designs. The 2.7 V minimum supply allows direct operation from two alkaline cells or a single Li-ion cell without a boost converter, and the 16 MHz capability lets the design burst to full speed only when needed. With 1 KB SRAM for data buffering and 512 B EEPROM for calibration constants that survive power loss, the device supports portable meters, loggers, and handheld testers. The 64-TQFP industrial-grade package withstands handling and temperature extremes typical of field instruments.
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LCD-Based Instrumentation Front Ends
For instruments requiring segment LCDs, the pin-compatible ATMEGA169PA-AUR variant shares the ATmega165PA's 64-TQFP footprint but adds an on-chip LCD controller/driver, eliminating an external LCD driver IC and its wiring. The ATMEGA165PA-AUR itself is well suited as the processing element where a graphic module is used instead: 54 I/O lines drive a parallel LCD interface plus keypad matrix, while the USART and SPI peripherals handle host communication. According to the 8285 family datasheet, Port D output buffers have symmetrical drive with high sink and source capability, useful for backlight and indicator control. Designers can reuse one PCB across LCD and non-LCD product variants using this footprint.
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Sensor Nodes and IoT Edge Devices
The ATMEGA165PA-AUR serves wired sensor nodes and simple IoT edge devices where the 8-channel-port analog and digital capability reduces component count. Analog sensor signals are handled by the device's ADC channels on Port A, while SPI and USART interfaces connect to transceivers or external converters. PicoPower sleep modes matter here: a node that sleeps most of the time and wakes to sample can run for months or years on primary cells. The 16 KB Flash accommodates sensor calibration, protocol stacks, and a bootloader for over-the-wire firmware updates. The industrial temperature rating supports unconditioned environments such as building utility spaces and outdoor enclosures with passive thermal management.
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Embedded Systems Education and Prototyping
The ATMEGA165PA-AUR is a strong choice for embedded-systems coursework and prototyping because the AVR architecture is well documented, supported by the free AVR toolchain in MPLAB, and programmable with low-cost MPLAB Snap hardware. According to Microchip, MPLAB Snap connects via High-Speed USB 2.0 and uses two I/O pins plus reset for in-circuit debugging and ICSP, so students can flash and debug on the target board without sockets. The 133-instruction mostly single-cycle RISC core teaches pipelining and register-based operation with 32 working registers visible in the debugger. The 64-TQFP requires a breakout or custom board, which itself teaches PCB layout skills; DIP-packaged ATmega siblings ease the first step.
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Motor Control and Appliance Subsystems
In appliances and small motor-driven subsystems, the ATMEGA165PA-AUR generates PWM on its timer outputs and sequences relays or driver stages through the high-drive Port D buffers, whose symmetrical sink and source characteristics are documented in the 8285 family datasheet. The 16 MHz core executes closed-loop control loops with deterministic single-cycle instruction timing, and 54 I/O lines cover user interfaces, limit switches, and status indicators on one die. The 2.7 V to 5.5 V range simplifies interfacing with 5 V driver logic, and the industrial temperature grade suits enclosed, heat-generating appliance environments. The 512 B EEPROM stores fault counters and usage statistics across power cycles for service diagnostics.
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추천 제품 요약
엔지니어링 참조 데이터: ATMEGA165PA-AUR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ATMEGA165PA-AU | ATMEGA165A-AU | ATMEGA165P-16ANR | ATMEGA169PA-AUR | ATMEGA169A-AU |
|---|---|---|---|---|---|---|
| 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 | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB (8K x 16) ISP Flash | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| EEPROM / SRAM | 512 B / 1 KB | 512 B / 1 KB | 512 B / 1 KB | 512 B / 1 KB | 512 B / 1 KB | 512 B / 1 KB |
| picoPower Technology | Yes | Yes | No | No | Yes | No |
| General-Purpose I/O Lines | 54 | 54 | 54 | 54 | Fewer (LCD-dedicated pins) | Fewer (LCD-dedicated pins) |
| On-Chip LCD Controller | No | No | No | No | Yes | Yes |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz (16AN speed grade) | 16 MHz | 16 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Delivery Format | Tape & Reel (R suffix) | Tray | Tray | Tape & Reel (NR suffix) | Tape & Reel | Tray |
주요 차별점
- picoPower low-power technology (vs ATMEGA165A-AU)
- 54 fully general-purpose I/O lines (vs ATMEGA169PA-AUR)
- Active lifecycle with broad distributor stock (vs ATMEGA165P-16ANR)
설계 노트
The 64-TQFP (14 x 14 mm, 1 mm height) footprint requires a land pattern per the Microchip package drawing; use 0.5 mm pitch routing rules with thermal relief vias only where needed. Place a 100 nF ceramic decoupling capacitor at each VCC/GND pin pair, as close to the pins as possible, plus a bulk 10 uF capacitor near the supply entry. Keep the RESET trace short and reserve the SPI pins (SCK, MISO, MOSI) plus RESET on a 2x3 ICSP header so MPLAB Snap can program and debug without board rework.
Because the supply range is 2.7 V to 5.5 V, verify the maximum clock frequency permitted at your minimum supply rail: AVR devices restrict full-speed 16 MHz operation to the higher end of the voltage range (the classic ATmega 0.9*V/f slope constraint - consult the frequency-vs-voltage graph in the 8285 family datasheet). Running 16 MHz from a 2.7 V rail is outside the guaranteed safe operating region, so either raise the rail or reduce f_CPU. If battery life dominates, exploit picoPower sleep modes and disable unused peripheral clocks via the power-reduction registers.
Do not assume the ATmega165A (non-picoPower) and ATmega165PA (picoPower) behave identically in sleep: the PA part has different power-management register behavior and lower sleep currents, so firmware written for the 165A should have its sleep-mode configuration re-validated. Also note the 165PA offers 54 I/O lines while the related ATmega169 variants dedicate some pins to an LCD controller - designs reusing a common 64-TQFP footprint across both must route port functions accordingly. Finally, third-party datasheet mirrors may be outdated; always design against the latest Microchip document 8285 revision.
규정 준수 정보
Verified web data does not include explicit RoHS/REACH statements for this MPN. The FindIC listing mentions 'GREEN, T&R' packaging which generally indicates green/RoHS-compliant production, but formal compliance must be confirmed via Microchip's official product page or certificate search.
