ATTINY48-MU - 4KB 12MHz AVR MCU | Microchip Technology
部品番号: ATTINY48-MU ✓ 生産中ATTINY48-MU 概要
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, timers, communication interfaces, and analog peripherals on one integrated circuit. In the broader hierarchy, the ATTINY48 belongs to the AVR enhanced RISC family of 8-bit embedded microcontrollers, with features suitable for compact control, sensing, and communications designs. Its 1.8 V to 5.5 V operating range supports both low-voltage and conventional 5 V systems.
The device provides up to 12 MIPS throughput at 12 MHz and executes powerful instructions in a single clock cycle. Integrated resources include an 8-bit timer/counter, a 16-bit timer/counter with PWM, a 10-bit analog-to-digital converter, SPI, and debugWIRE for on-chip debugging. The 4 KB Flash memory is organized as 2K x 16 according to the verified distributor data, while the 64 B EEPROM preserves nonvolatile data and the 256 B SRAM supports working memory.
The ATTINY48-MU combines an 8-bit RISC core with multiple mixed-signal peripherals in a compact 32-pin surface-mount package. Its picoPower architecture targets low-power embedded operation, making clocking, peripheral shutdown, and sleep-mode planning important during firmware development. The 10-bit ADC supports analog measurement, while SPI supports communication with sensors, displays, memory, and other digital peripherals.
Typical applications include low-power sensor nodes, industrial control modules, compact motor controllers, metering equipment, simple communication hubs, and embedded automation. The 12 MHz operating point is useful when firmware requires more timing headroom than a low-clock microcontroller while retaining a modest 8-bit processing footprint. The 5 x 5 mm VQFN package also supports dense board layouts where reduced footprint and careful exposed-pad thermal management are priorities.
For new layouts, follow the manufacturer package and pin-assignment documentation exactly, connect the exposed pad to the intended thermal and electrical plane, and validate the power, decoupling, programming, and debug interfaces before layout release. Firmware should also verify analog reference, timer prescaling, peripheral clock gating, and unused-pin states. This page combines verified product, distributor, application, and design information to support component selection without treating unverified alternatives as drop-in replacements.
ドロップイン代替品: ATTINY48-MU — 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。
ATtiny48-MU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATtiny48-MUR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATtiny48-AU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATtiny48-MMU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATtiny88-MU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATTINY48-MU 最大定格＆電気的特性
| Product Type | 8-bit AVR RISC microcontroller |
| Architecture | AVR enhanced RISC |
| 最大クロック周波数 | 12 MHz |
| Maximum Throughput | 12 MIPS at 12 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Flash Memory | 4 KB (2K x 16) |
| EEPROM Memory | 64 B |
| SRAM | 256 B |
| ADC Resolution | 10 bits |
| Timer/Counter 0 | 8-bit timer/counter |
| Timer/Counter 1 | 16-bit timer/counter with PWM |
| Serial Interface | SPI |
| Debug Interface | debugWIRE |
| Programming | In-System Programming |
| Power Technology | picoPower |
| パッケージ | 32-VQFN (5 x 5 mm) |
| Package Type | Surface-mount VQFN |
| Exposed Pad | Present according to verified 32-pin package description |
| Supplier Price | From $1.6693 USD as of 2026-10-22 |
ATTINY48-MU surface-mount vqfn ピン配置ガイド
ATTINY48-MU (surface-mount vqfn 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: ATTINY48-MU.
詳細は データシート をご参照ください。
主な用途
ATTINY48-MU の用途: 6 件s: Low-Power Sensor Nodes, Industrial Metering and Control, Compact Motor-Control Modules, Embedded Automation Modules, Digital Instrumentation and Measurement, Battery-Powered IoT Controller.
Low-Power Sensor Nodes
ATTINY48-MU fits compact sensor nodes because it combines a 4 KB AVR Flash core, 64 B EEPROM, 256 B SRAM, and a 10-bit ADC in one 32-VQFN device. The ADC can digitize analog sensor signals, while SPI can connect a selected digital sensor or storage device. Its 1.8 V to 5.5 V operating range supports low-voltage battery-derived rails, subject to regulator and sensor requirements. The picoPower positioning supports low-power design, although actual current consumption depends on firmware, clock mode, ADC use, and enabled peripherals. Designers should verify the complete datasheet limits before selecting the regulator and configuring sleep states.
おすすめ
Industrial Metering and Control
ATTINY48-MU is suitable for metering and compact industrial control functions where an 8-bit controller must combine measurement with deterministic timing. Its 10-bit ADC provides an analog acquisition path, while the 8-bit timer/counter and 16-bit timer/counter with PWM support event counting, periodic sampling, and actuator timing. SPI can connect a display, sensor, or remote communication module. The 1.8 V to 5.5 V range permits integration across low-voltage and 5 V system rails, but galvanic isolation, protection, calibration, and environmental requirements depend on the final enclosure and installation. Firmware should define error handling and safe output states before deployment.
おすすめ
Compact Motor-Control Modules
ATTINY48-MU can serve as the control core for small motor-control modules that require timed outputs and limited code size. The 16-bit timer/counter with PWM provides a basis for speed, position, or duty-cycle control, while the 8-bit timer/counter can support additional event timing. The 4 KB Flash and 256 B SRAM are appropriate only when the control loop and supervisory logic fit within those resources. External transistor drivers, protection, current sensing, and thermal management remain necessary; the microcontroller package itself is not a motor-power stage. Validate stall conditions, switching noise, and timing behavior with the final power stage and mechanical load.
おすすめ
Embedded Automation Modules
ATTINY48-MU is appropriate for small embedded automation modules that need local sensing, timed logic, and serial connectivity without a larger application processor. Its SPI interface can connect digital sensors or output peripherals, and the two timer/counters support repeated control tasks and PWM-related functions. The 4 KB Flash footprint favors compact firmware, while 256 B SRAM limits buffer-heavy protocols and complex algorithms. In an automation product, define bootloader or ISP access early, validate reset behavior during power cycling, and provide deterministic outputs for actuator faults. The exact environmental and safety requirements remain application-specific and are not implied by the microcontroller specification.
おすすめ
Digital Instrumentation and Measurement
ATTINY48-MU can serve as a local controller in compact instrumentation where a 10-bit ADC, EEPROM, SRAM, and serial debug support are useful. The ADC can acquire a sensor or control point, EEPROM can retain calibration or configuration data, and debugWIRE supports development and field diagnostics. The 1.8 V to 5.5 V range allows operation from multiple rail arrangements, but analog reference quality, input impedance, and noise filtering must be handled carefully. Because the device has only 256 B SRAM and 4 KB Flash, avoid unnecessary buffering and keep protocols deterministic. Verify ADC accuracy, calibration limits, and timing behavior on the target board.
おすすめ
Battery-Powered IoT Controller
ATTINY48-MU is a practical fit for battery-powered IoT controllers that need local sensing and control but not a high-memory application processor. The picoPower family positioning, 1.8 V minimum supply, ADC, EEPROM, and SPI support low-power sensing nodes, while the 32-VQFN package helps minimize board area. Battery life depends on the regulator efficiency, sensor duty cycle, ADC activation, communication bursts, and firmware sleep behavior; the supplied data does not quantify complete active or sleep currents. Validate the power budget with a representative load and avoid placing long communication bursts on the same rail when the RF or sensor path requires additional filtering.
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: ATTINY48-MU — 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 | ATtiny48-MU | ATtiny48-MUR | ATtiny48-AU | ATtiny48-MMU | ATtiny88-MU |
|---|---|---|---|---|---|---|
| Package | 32-VQFN (5 x 5 mm) | 32-VQFN (5 x 5 mm) | 32-VQFN (5 x 5 mm) | 32-VQFN (5 x 5 mm) | 32-VQFN (5 x 5 mm) | 32-VQFN (5 x 5 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主な差別化要因
- Compact integrated control resources （vs ATMEGA8A-MU)
- Low-voltage operating range （vs ATMEGA128A-MU)
- 32-VQFN compact footprint （vs ATtiny48-PU)
設計ノート
The verified ATTINY48-MU operating range is 1.8 V to 5.5 V. Select a regulator whose output tolerance, transient response, and noise remain acceptable across the expected input range and startup sequence. Place the device-side supply and ground connections directly at the package, use short low-impedance traces, and provide the decoupling arrangement required by the manufacturer datasheet. Do not assume that a 5 V rail is interchangeable with a 1.8 V system; revalidate clock speed, ADC behavior, programming voltage, and peripheral limits when changing supply conditions.
The target uses a 32-VQFN 5 x 5 mm package. Generate the land pattern from the current Microchip package drawing rather than relying on a generic QFN footprint. Preserve the exposed-pad and thermal-via strategy recommended for the assembly process, keep the exposed pad electrically consistent with the reference design, and maintain a continuous ground reference beneath the device where practical. Verify pin numbering, programming access, debugWIRE access, and reset routing before releasing the PCB.
Keep SPI traces short, route them away from noisy switching nodes, and provide a continuous ground reference beneath the communication path. For ADC measurements, place input conditioning components close to the source and the MCU pins, keep the analog path away from digital clocks and power converters, and follow the datasheet’s analog-reference requirements. Add filtering only after considering signal bandwidth, ADC acquisition behavior, and source impedance; overly aggressive filtering can degrade measurement response.
Do not treat a similar AVR part as a drop-in replacement without checking the exact pinout, memory map, peripheral mapping, voltage limits, and programming interface. In particular, the supplied cross-reference data does not establish a verified pin-compatible substitute for ATTINY48-MU. Also confirm that the selected ordering suffix matches the intended package and temperature requirements. A firmware build that succeeds does not prove that reset vectors, timers, ADC channels, or boot behavior are compatible on the physical board.
コンプライアンス情報
The verified manufacturer page and distributor snippets do not provide explicit RoHS, REACH, lead-free, halogen-free, AEC-Q100, or conflict-mineral statements for ATTINY48-MU. Compliance fields therefore remain unknown rather than inferred.
