ATMEGA162-16MU - 16MHz AVR MCU 16KB Flash | Microchip
부품 번호: ATMEGA162-16MU ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.19 | $2,190.00 |
ATMEGA162-16MU 개요
An 8-bit AVR microcontroller is a single-chip computer built on the AVR enhanced RISC architecture, in which most of the 133 powerful instructions execute in a single clock cycle. Within the semiconductor hierarchy, it belongs to the microcontroller family: MCU -> embedded processor -> integrated circuit. This single-cycle execution lets designers optimize power consumption against processing speed, achieving throughput near 1 MIPS per MHz.
Key features include 16 KB self-programmable Flash with 10,000 write cycles, 512 B EEPROM with 100,000 write cycles, 35 programmable I/O lines, two 8-bit timers, one 16-bit timer, a USART, SPI serial interface, and an on-chip JTAG module supporting boundary-scan and debug. The extended voltage range of 2.7 V to 5.5 V permits direct battery and 5 V industrial rail operation.
Architecturally, the ATmega162 pairs an AVR core with separate program and data buses (Harvard architecture), enabling single-cycle instruction fetch and execution. Hardware multiply and rich peripheral set offload the CPU, while sleep modes (idle, power-down, power-save) reduce quiescent consumption for battery designs.
Typical applications include industrial control panels, embedded instrumentation, communication adapters with dual UART-style interfaces, and legacy ATmega161 board refresh - the ATmega162 is 100% pin compatible with the ATmega161 and can replace it on existing PCBs (fuse locations and electrical characteristics differ).
Design consideration: when replacing an ATmega161, re-verify fuse bit locations and electrical characteristics per the Microchip ATmega162 datasheet; also budget the MLF-44 exposed pad as a ground connection in the PCB layout.
This page synthesizes distributor pricing, drop-in alternatives, pin-level guidance, and application notes not found in the manufacturer datasheet.
드롭인 대체품: ATMEGA162-16MU — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ATMEGA162-16MU (동일 폼 팩터 및 풋프린트) — 차이점: Package, SRAM, Core Architecture, Flash Program Memory, EEPROM.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ATMEGA162V-16MU
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ATMEGA162-16MI
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ATMEGA162-16MUR
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$3.58 / 개
데이터시트 보기 →ATMEGA161-16MI
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ATMEGA162-16MU 최대 정격 & 전기적 특성
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 16 MHz |
| Program Memory Size | 16 KB (8K x 16) FLASH |
| EEPROM Size | 512 B |
| RAM Size | 1 KB |
| Number of I/O | 35 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Oscillator Type | Internal |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | SPI, UART/USART |
| JTAG Interface | Yes (on-chip debug and boundary-scan) |
| 패키지 | 44-VQFN (7x7 mm, MLF-44), 0.5 mm pitch |
| 실장 유형 | Surface Mount |
| 동작 온도 | -40C to +85C |
| RoHS 상태 | Compliant (GREEN, MO-220VKKD-3) |
| Instruction Set | 133 powerful instructions, most single-cycle |
ATMEGA162-16MU 44-vqfn (7x7 mm, mlf-44), 0.5 mm pitch 핀 구성 가이드
ATMEGA162-16MU(44-vqfn (7x7 mm, mlf-44), 0.5 mm pitch 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: ATMEGA162-16MU.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ATMEGA162-16MU 적합 용도: 6 애플리케이션s: Industrial Control and Automation, Embedded Instrumentation and Test Equipment, Communication Adapters and Protocol Bridges, Legacy ATmega161 Board Refresh and EOL Migration, Battery-Powered and Low-Voltage Portable Devices, Hobby, Education, and Open-Source Embedded Platforms.
Industrial Control and Automation
The ATMEGA162-16MU fits industrial control panels because its 5.5 V maximum supply tolerates noisy 5 V logic rails, its 35 I/O lines drive relays, indicators, and switches directly, and its watchdog timer plus brown-out reset deliver the fault recovery behavior factory automation demands. In a typical panel controller, the MCU polls sensors over SPI, drives PWM outputs for actuators, and reports status on the UART at 16 MIPS of headroom - far more than the scanning workload requires. The 2.7 V floor also supports battery-backed sub-panels. Because the AVR core executes most of its 133 instructions in a single cycle, deterministic interrupt latency simplifies timing-critical I/O sequences without an RTOS.
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Embedded Instrumentation and Test Equipment
Bench instruments, data loggers, and handheld meters benefit from the ATMEGA162-16MU's JTAG on-chip debugging, which allows boundary-scan test and real-time debugging of the final assembled PCB - valuable when a measurement fault could be hardware or firmware. The 16 KB Flash accommodates calibration tables and menu frameworks, while 512 B EEPROM stores user calibration without external NVRAM. The SPI interface reads ADC front-ends, and the USART streams results to a PC. Running at 16 MHz from a 5 V rail, the device delivers sufficient arithmetic throughput for scaling, filtering, and display formatting at update rates typical of panel instrumentation.
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Communication Adapters and Protocol Bridges
The ATmega162 architecture was designed with an enhanced dual-programmable-UART-style I/O structure, making the ATMEGA162-16MU well suited to protocol converters and RS-232/RS-485 bridges where one port talks to a host and another to a field bus. The 16 MHz clock supports baud rates well beyond 115200 with low error using the on-chip baud-rate generator, and 1 KB SRAM buffers packet bursts. Because most AVR instructions execute in a single cycle, byte-level framing and CRC computation run comfortably within interrupt deadlines. The 2.7 V to 5.5 V range also allows the same board design to serve both 5 V industrial transceivers and 3.3 V logic front ends.
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Legacy ATmega161 Board Refresh and EOL Migration
The single strongest use case for the ATMEGA162-16MU is refreshing existing designs built on the ATmega161. According to the Microchip ATmega162 datasheet, the ATmega162 is 100% pin compatible with the ATmega161 and can replace it on current printed circuit boards without layout changes - a rare true drop-in migration path for aging AVR sockets. Firmware recompilation is required because fuse bit locations and electrical characteristics differ from the ATmega161; engineers must re-verify brown-out settings and clock fuses. Once migrated, the design gains higher throughput, more Flash (16 KB), and continued Microchip manufacturing support, eliminating obsolescence risk on legacy PCBs.
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Battery-Powered and Low-Voltage Portable Devices
With a 2.7 V operating floor and AVR sleep modes (idle, power-down, power-save), the ATMEGA162-16MU serves portable and battery-backed equipment such as hand-held readers, remote sensors, and backup controllers. Running from three NiMH cells or a regulated 3.3 V rail, the device executes near 1 MIPS per MHz, so designers can clock it down from 16 MHz to cut current proportionally while retaining the same code. The watchdog and power-on reset guarantee clean recovery after deep discharge events. For products that must operate down to 1.8 V, the pin-identical ATMEGA162V-16MU variant extends the supply range without any PCB change.
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Hobby, Education, and Open-Source Embedded Platforms
The ATmega162 retains an active open-source ecosystem: the MCUdude MajorCore GitHub project provides an Arduino hardware package for the ATmega162 and ATmega8515, enabling modern toolchain development on this classic core. Educational labs use the 44-pin VQFN/MLF device to teach AVR RISC architecture, ISP programming, and JTAG debugging on one chip, since the ATmega162 uniquely combines all three interfaces in a legacy-era part. The 35 I/O lines support breadboard-adapted carrier boards, and SPI/USART exercises map directly onto common lab peripherals. The 133-instruction single-cycle AVR instruction set remains a reference model for teaching embedded assembly.
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추천 제품 요약
엔지니어링 참조 데이터: ATMEGA162-16MU — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ATMEGA162V-16MU | ATMEGA162-16MI | ATMEGA162-16MUR | ATMEGA161-16MI |
|---|---|---|---|---|---|
| Package | 44-VQFN (7x7 mm, MLF-44) | 44-VQFN (7x7 mm, MLF-44) - same | 44-VQFN (7x7 mm, MLF-44) - same | 44-VQFN (7x7 mm, MLF-44) - same | 44-VQFN (7x7 mm, MLF-44) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Max Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Program Flash | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Supply Voltage Range | 2.7 V to 5.5 V | 1.8 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 |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Pin Compatibility Notes | Reference (ATmega162 pinout) | 100% pin compatible | 100% pin compatible | 100% pin compatible | 100% pin compatible, fuse bits and electrical characteristics differ |
주요 차별점
- True drop-in ATmega161 replacement (vs ATMEGA161-16MI)
- Low-voltage variant available in identical footprint (vs ATMEGA162V-16MU)
- Combined ISP + JTAG + dual-UART-style architecture (vs ATMEGA16-16AU)
- Honest trade-off: no ADC (vs ATMEGA164PA)
설계 노트
The MLF-44 (VQFN 7x7 mm) exposed die pad is the primary ground connection and must be soldered to a solid ground plane. Use an array of thermal vias (typically 4-9) under the pad to reduce ground inductance and improve heat spreading. The 0.5 mm pitch requires a no-clean or water-wash soldering profile with stencil apertures of roughly 0.25-0.28 mm to avoid bridging. Per Microchip MLF application guidance, keep the pad slightly larger than the die pad footprint for reliable fillet formation.
Decouple VCC with a 100 nF ceramic capacitor placed within 5 mm of the supply pin, plus a 4.7-10 uF bulk capacitor per board section. Enable the brown-out detector (BOD) via fuse for supplies above 2.7 V - without BOD, a slow supply decay during power-down can corrupt EEPROM contents, a documented AVR failure mode. If using EEPROM writes, respect the 100,000 cycle endurance by wear-leveling or throttling write frequency in logging applications.
When migrating firmware from ATmega161 to ATmega162, re-verify all fuse bit locations - the datasheet explicitly states fuse locations and electrical characteristics differ between the two 100% pin-compatible devices. Also confirm that the 16 MHz rating is valid for your supply voltage: at the low end of the 2.7 V range, derate clock frequency per the datasheet frequency-vs-VCC curve. JTAG pins default to JTAG function after reset; disable the JTAG-enable fuse (or reprogram in software via the JTD bit, written twice within four cycles) if those pins are needed as general I/O.
Route the SPI ISP lines (MOSI, MISO, SCK) with short traces and add a series resistor (typically 100 ohm) on SCK if the header is more than ~10 cm from the MCU, to damp ringing during programming. Keep XTAL1/XTAL2 crystal traces under 10 mm with guard ground for stable 16 MHz operation, and load capacitors per the crystal datasheet (typically 12-22 pF).
규정 준수 정보
GREEN package (MO-220VKKD-3, MLF-44) per FindIC listing indicates RoHS/lead-free. REACH, halogen-free, and conflict-minerals declarations not found in provided data - verify on Microchip compliance portal.
