ATMEGA16-16MJ - 16MHz 16KB Flash AVR MCU, 44-VQFN | Microchip
部品番号: ATMEGA16-16MJ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.8 | $5.80 |
| 10 | $5.22 | $52.20 |
| 100 | $4.64 | $464.00 |
| 500 | $4.18 | $2,090.00 |
| 1,000 | $3.72 | $3,720.00 |
ATMEGA16-16MJ 概要
A microcontroller is a single-chip computer that integrates a processor core, nonvolatile program memory, data RAM, and peripheral controllers on one die. Within the power-management-agnostic hierarchy of embedded silicon, the microcontroller sits below system-on-chip and above bare logic ICs; the AVR ATmega family is a classic 8-bit RISC microcontroller line widely used for cost-sensitive embedded control.
Key features of the ATMEGA16-16MJ include the advanced AVR RISC architecture with 131 powerful instructions, most executing in a single clock cycle, plus eight general-purpose working registers. The device integrates an 8-channel 10-bit ADC, a JTAG interface for on-chip debugging and boundary scan, and self-programming Flash enabling in-system field updates.
Technical depth: the Harvard-architecture core fetches instructions and data over separate buses, sustaining one MIPS per MHz of clock. On-chip peripherals include two 8-bit timers, one 16-bit timer with input capture and PWM output compare channels, a programmable serial USART, an SPI serial interface, and a two-wire (I2C-compatible) interface. Internal RC oscillator options and brown-out detection simplify clocking and supply supervision in compact boards; the exposed pad of the 44-VQFN improves thermal and ground performance.
Typical applications include industrial automation sensors and actuators, motor control and power-supply supervision panels, and embedded instrumentation requiring 10-bit analog acquisition. The industrial temperature range suits factory-floor electronics.
Design consideration: to run at the full 16 MHz speed grade the supply must be 4.5 V to 5.5 V; lower-voltage operation requires derating the clock frequency per the Microchip frequency-versus-voltage curve.
This page synthesizes distributor inventory data, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers one citation-ready reference.
ドロップイン代替品: ATMEGA16-16MJ — 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: ATMEGA16-16MJ （同一形状・フットプリント） — 相違点: Package, Flash Program Memory, Debug Interface, EEPROM, Instruction Set.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA16-16AJ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.1 / 個
データシートを見る →ATMEGA16A-MU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATMEGA16-16MU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATMEGA32-16MU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATMEGA8535L-8MI
✅ ドロップイン✓ 在庫あり
$2.75 / 個
データシートを見る →ATMEGA16-16MJ 最大定格＆電気的特性
| Core Architecture | AVR 8-bit RISC |
| Core Size | 8-bit |
| 最大クロック周波数 | 16 MHz |
| Throughput | Up to 16 MIPS at 16 MHz |
| Flash Program Memory | 16 KB (8K x 16), self-programming |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Instruction Set | 131 instructions, mostly single-cycle |
| ADC | 8-channel, 10-bit |
| Debug Interface | JTAG (on-chip debug and boundary scan) |
| Timers | Two 8-bit, one 16-bit |
| Communication Interfaces | USART, SPI, TWI (I2C-compatible) |
| パッケージ | 44-VQFN (7x7 mm) exposed pad |
| 動作温度範囲 | -40C to +85C (industrial) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | ROHS3 Compliant |
ATMEGA16-16MJ 44-vqfn (7x7 mm) exposed pad ピン配置ガイド
ATMEGA16-16MJ (44-vqfn (7x7 mm) 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: ATMEGA16-16MJ.
詳細は データシート をご参照ください。
主な用途
ATMEGA16-16MJ の用途: 6 件s: Industrial Automation Control Nodes, Sensor Acquisition Systems, Embedded Instrumentation and Test Rigs, Motor Control and PWM Drive Panels, Human-Machine Interface Panels, Power Supply and Battery Charger Supervision.
Industrial Automation Control Nodes
The ATMEGA16-16MJ fits factory automation nodes because its 16 MHz AVR core supplies 16 MIPS of deterministic single-cycle RISC throughput for scanning inputs and driving actuators, while the industrial -40C to +85C temperature rating matches cabinet electronics on the factory floor. The 16 KB self-programming Flash allows firmware field updates over the USART or TWI bus without removing the chip, an important serviceability feature in installed machinery. Four 8-bit GPIO ports give 32 I/O lines, enough for relay banks, limit switches, and status LEDs in one device, and the 16-bit timer with PWM channels handles simple actuator positioning. Placed on a 5 V industrial rail, the MLF-44 exposed-pad package grounds directly to the board pour, improving noise immunity near contactors and motor drivers.
おすすめ
Sensor Acquisition Systems
Sensor front ends benefit directly from the ATMEGA16-16MJ integrated 8-channel 10-bit ADC, which multiplexes eight analog inputs such as thermistors, potentiometers, and pressure bridges without an external converter IC. At a 5 V reference the converter resolves roughly 4.9 mV per LSB, adequate for most process-monitoring tasks, while the 16 MHz core executes oversampling and averaging loops quickly thanks to single-cycle instructions. The 512 B EEPROM stores per-unit calibration constants that survive power cycles, and the TWI (I2C-compatible) interface lets the MCU log or forward readings to a display or supervisory controller. The JTAG on-chip debug interface shortens bring-up by allowing breakpoints during ADC ISR development. The MLF-44 exposed pad provides a low-impedance ground, reducing analog noise coupling in mixed-signal boards.
おすすめ
Embedded Instrumentation and Test Rigs
Bench and production test fixtures use the ATMEGA16-16MJ because its JTAG interface enables true on-chip debugging and boundary-scan, letting engineers step through measurement sequences and inspect register state live during instrument validation. The 16 KB self-programming Flash supports test-sequence firmware swapping at the fixture without desoldering, and the USART provides a simple link to a host PC for logging. Timer PWM output-compare channels generate stimulus waveforms for exercising the device under test, while the 10-bit ADC reads response levels at roughly 4.9 mV resolution per 5 V of reference. The 44-MLF footprint keeps the controller small on dense fixture boards, and the industrial temperature rating tolerates unconditioned lab or line-side environments.
おすすめ
Motor Control and PWM Drive Panels
The ATMEGA16-16MJ suits small motor drive panels through its 16-bit timer with input-capture and PWM output-compare channels, which generate and measure drive waveforms directly in hardware. The 16 MHz clock gives fine PWM resolution (about 16-bit period counts at lower duty-cycle frequencies) and fast interrupt latency for commutation or V/f control loops on DC and small permanent-magnet motors. The 10-bit ADC samples current-shunt or speed-potential feedback on one of eight channels, closing the loop in software while the core's single-cycle RISC instruction set keeps control math deterministic. On a 5 V rail with the MLF-44 exposed pad soldered to a generous ground pour, the device tolerates the electrically noisy environment near power stages and contactors.
おすすめ
Human-Machine Interface Panels
Operator panels and small HMIs pair the ATMEGA16-16MJ with keypads, indicators, and character LCDs. Four 8-bit ports provide 32 GPIO, enough to drive a multiplexed display segment set and scan a 4x4 matrix keypad from a single 44-MLF device, while the single-cycle core refreshes displays and debounces keys without visible lag. The TWI interface can offload GPIO expansion or an RTC, and the USART streams status to a supervisory PLC or a PC. The 512 B EEPROM retains user-set thresholds and last mode through power loss, and the brown-out detector plus reset supervisor keep the panel from latching in corrupted states on brownouts. The 16 KB self-programming Flash allows menu-table and firmware updates in the field via the serial link.
おすすめ
Power Supply and Battery Charger Supervision
Switching power supplies and chargers use the ATMEGA16-16MJ as a supervisory and telemetry controller: the 10-bit ADC reads output voltage, current shunt, and temperature on separate multiplexed channels, and software comparators implement constant-current/constant-voltage charging profiles with programmable thresholds. PWM timer channels can trim or gate the power stage through an optocoupler or drive a precharge relay, while the 16 MIPS core keeps the control loop timing tight. The 512 B EEPROM stores serialized calibration and fault logs, and the industrial temperature range covers -40C to +85C operation in sealed enclosures. Running at the full 16 MHz speed grade requires a 4.5 V to 5.5 V rail, which is conveniently the same rail the supply itself produces.
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: ATMEGA16-16MJ — 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 | ATMEGA16-16AJ | ATMEGA16A-MU | ATMEGA32-16MU | ATMEGA8535L-8MI |
|---|---|---|---|---|---|
| Package | 44-VQFN (7x7 mm) MLF, exposed pad | 44-VQFN (7x7 mm) MLF - same | 44-VQFN (7x7 mm) MLF - same | 44-VQFN (7x7 mm) MLF - same | 44-VQFN (7x7 mm) MLF - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 32 KB | 8 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 2 KB | 512 B |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit | 8-channel, 10-bit | 8-channel, 10-bit | 8-channel, 10-bit |
| JTAG Debug | Yes | Yes | Yes | Yes | Yes |
| Pin Compatibility | Reference (44-MLF AVR pinout) | Pin-to-pin, same die | Pin-to-pin, A-refresh die | Pin-to-pin, memory upgrade | Pin-to-pin, lower speed grade |
主な差別化要因
- Full 16 MHz speed grade in MLF package （vs ATMEGA8535L-8MI)
- Same footprint with double memory available （vs ATMEGA32-16MU)
- JTAG on-chip debug included （vs ATMEGA168V-10MU)
設計ノート
Supply design must respect the frequency-versus-voltage derating curve in the ATmega16 datasheet: full 16 MHz operation requires 4.5 V to 5.5 V VCC. If your board must also run at 3.3 V, reduce the clock to the derated limit or select an L-suffix family variant instead. Place a 100 nF ceramic decoupling capacitor at each VCC/AVCC pin pair, as close to the pads as possible, plus bulk capacitance at the board entry. AVCC should be tied to VCC through an LC filter when the ADC is used, keeping digital switching current out of the converter reference.
The 44-VQFN (7x7 mm) MLF package has its ground return on the exposed die pad underneath the body. Solder this pad to a solid ground pour using an array of small vias (typically 4 to 9) to evacuate heat and minimize ground bounce; an unsoldered pad commonly causes intermittent resets and ADC noise. MLF perimeter pads sit under the body edge, so specify a non-solder-mask-defined (NSMD) footprint and review the datasheet land-pattern drawing before fabrication. Inspection after reflow is limited to side-view, so use X-ray or via-probe checks on first articles.
Three recurring pitfalls with this part: (1) the JTAG pins are shared with Port C - if firmware reuses those pins as GPIO, the JTAGEN fuse must be cleared or the pins will not function, and debugging is then lost; (2) EEPROM writes lose data if VCC collapses mid-write - enable the brown-out detector fuse and keep VCC valid during EEPROM operations; (3) the RESET pin has an internal pull-up but long or noisy reset traces on industrial boards still need an external 10k pull-up plus 100 nF capacitor for robust power-up. Verify all fuse settings against the datasheet register summary before production programming.
When using the 8-channel 10-bit ADC in noisy industrial environments, keep analog traces short, route them away from PWM and USART lines, and filter the AVCC supply. Consider averaging 4 to 16 samples per channel in software; the 16 MIPS core has ample headroom for this. For the XTAL pins, follow the datasheet crystal selection tables and place load capacitors within 5 mm of the pins; internal RC oscillator options avoid the crystal entirely at the cost of frequency accuracy, which matters for USART baud-rate tolerance on long links.
コンプライアンス情報
Distributor data (Full-Electronic) lists ROHS3 Compliant status for this part. Other compliance fields not stated in provided data.