ATTINY48-MU - 4KB 12MHz AVR MCU | Microchip Technology
Référence : ATTINY48-MU ✓ ActifATTINY48-MU Présentation
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.
Alternatives de remplacement direct pour ATTINY48-MU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
ATtiny48-MU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATtiny48-MUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATtiny48-AU
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATtiny48-MMU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATtiny88-MU
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATTINY48-MU Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit AVR RISC microcontroller |
| Architecture | AVR enhanced RISC |
| Fréquence d'horloge maximale | 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 |
| Boîtier | 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 |
Guide de configuration des broches du ATTINY48-MU surface-mount vqfn
Configuration des broches du ATTINY48-MU (boîtier surface-mount vqfn). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATTINY48-MU.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATTINY48-MU convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATTINY48-MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Compact integrated control resources (vs ATMEGA8A-MU)
- Low-voltage operating range (vs ATMEGA128A-MU)
- 32-VQFN compact footprint (vs ATtiny48-PU)
Notes de conception
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.
Informations de conformité
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.
