ATTINY48-MMU - 12MHz AVR Microcontroller, 4KB Flash | Microchip
부품 번호: ATTINY48-MMU ✓ 활성ATTINY48-MMU 개요
A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals on one integrated circuit. The ATtiny48 belongs to the ATtiny family of low-power AVR devices, which use an enhanced RISC architecture and execute most instructions within one clock cycle. Its compact memory and peripheral set are intended for embedded control tasks that require deterministic operation without a large external processor or memory subsystem.
The principal features include 4 KB of ISP flash, 64 bytes of EEPROM, and 256 bytes of SRAM. Peripherals include an 8-bit timer/counter, a 16-bit timer/counter with PWM, a 10-bit analog-to-digital converter, SPI, and debugWIRE on-chip debugging. The 12 MHz operating frequency supports responsive control loops while the 1.8 V to 5.5 V supply range allows operation across common embedded voltage domains.
The enhanced AVR architecture supports throughput approaching 1 MIPS per MHz, while the ATtiny48 reaches up to 12 MIPS at 12 MHz. ISP programming allows firmware to be written and updated through a serial programming interface, and debugWIRE provides a compact debug connection. The 10-bit ADC supports analog measurement, while the 16-bit timer with PWM provides timing and waveform-generation functions for embedded control systems.
Typical applications include compact industrial controllers, low-power sensor nodes, LED lighting controllers, motor-control modules, and small consumer products. The device is particularly suitable when the design needs more local processing and analog measurement than a basic fixed-function controller, but does not require the memory capacity of a larger 8-bit or 32-bit MCU.
PCB design should account for the exposed-pad thermal and electrical connection required by the 28-pin VQFN package. Place the device’s decoupling capacitor close to its supply pins, route programming and debug signals away from sensitive analog inputs, and follow the manufacturer’s land-pattern and exposed-pad guidance during assembly.
This product page organizes the manufacturer specifications, verified source links, package information, practical design guidance, and clearly qualified drop-in alternatives. It is intended to accelerate component selection while preserving the need to validate firmware, timing, memory, and thermal performance during hardware design.
드롭인 대체품: ATTINY48-MMU — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ATTINY48-MMU (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Flash Memory, Package, Product Type, SRAM.
ATTINY48-MMHR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ATTINY88-MMU
✅ 드롭인가격 문의
데이터시트 보기 →ATTINY88-MMHR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ATTINY88-MMH
✅ 드롭인가격 문의
데이터시트 보기 →ATTINY48-MMU 최대 정격 & 전기적 특성
| Product Type | 8-bit AVR RISC-based microcontroller |
| Architecture | AVR enhanced RISC |
| 최대 클록 주파수 | 12 MHz |
| Maximum Throughput | 12 MIPS at 12 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Flash Memory | 4 KB in-system programmable flash |
| EEPROM | 64 bytes |
| SRAM | 256 bytes |
| Program Memory Organization | 4 KB (2K x 16) |
| ADC Resolution | 10-bit |
| Timer/Counter 1 | 8-bit |
| Timer/Counter 2 | 16-bit with PWM |
| Serial Interface | SPI |
| Debug Interface | debugWIRE on-chip debug |
| Programming Interface | In-system programming |
| 패키지 | 28-pin VQFN, 4 x 4 mm |
| 실장 유형 | Surface mount |
ATTINY48-MMU 28-pin vqfn, 4 x 4 mm 핀 구성 가이드
ATTINY48-MMU(28-pin vqfn, 4 x 4 mm 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: ATTINY48-MMU.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ATTINY48-MMU 적합 용도: 6 애플리케이션s: Compact Industrial Sensor Node, LED Lighting Controller, Low-Power Motor Control Module, Battery-Powered Embedded Control, SPI Sensor and Interface Hub, Consumer Appliance User Interface.
Compact Industrial Sensor Node
The ATTINY48-MMU fits a compact sensor node that must acquire analog measurements and apply local control logic without a higher-cost processor. Its 10-bit ADC handles sensor signals within the 1.8 V to 5.5 V operating range, while the 12 MHz AVR core provides up to 12 MIPS for filtering, thresholding, and communication tasks. The 64-byte EEPROM can retain calibration or configuration information, while SPI supports connection to a sensor or communications module. The principal design constraint is 4 KB of flash and 256 bytes of SRAM, so the firmware should be structured to avoid unnecessary buffering.
추천
LED Lighting Controller
The ATTINY48-MMU is appropriate for LED dimming, status indication, and programmable lighting control because it combines a 16-bit timer/counter with PWM and a 12 MHz clock. PWM generation provides repeatable duty-cycle control without requiring a separate timer IC, while the 256-byte SRAM can hold short state and animation variables. Its 1.8 V to 5.5 V range accommodates common low-voltage LED systems. Designers should derive the LED current from the required brightness and forward voltage rather than driving the load directly from a microcontroller pin.
추천
Low-Power Motor Control Module
The ATTINY48-MMU can supervise a small motor-control subsystem where its 16-bit timer, PWM output, ADC inputs, and GPIO resources are more useful than those of a basic logic device. The timer supports deterministic timing and PWM generation, while the 10-bit ADC can monitor a motor-current or position feedback signal. A 12 MHz operating rate supports responsive control calculations, but the 4 KB flash limit favors compact control loops. The MCU should drive power transistors or an H-bridge rather than carrying the motor current directly.
추천
Battery-Powered Embedded Control
The ATTINY48-MMU is suitable for small battery-powered controllers because it combines a low-power 8-bit AVR core with a 1.8 V minimum operating voltage and 4 KB of on-chip program memory. It can remain on the board to execute control, wake on an external event, and retain configuration in EEPROM without requiring continuous external memory access. The 12 MHz clock provides useful processing headroom, although clock selection and sleep behavior should be checked in the manufacturer datasheet. A practical design should minimize always-on peripherals and use the device’s low-power operating modes where appropriate.
추천
SPI Sensor and Interface Hub
The ATTINY48-MMU is appropriate for a small SPI interface hub that connects sensors or an external controller to a secondary device. SPI reduces the number of signal lines required for peripheral communication, while the GPIO resources provide chip-select, interrupt, and status functions. Its 12 MHz CPU clock can service serial transfers alongside basic packet processing, and 256 bytes of SRAM can hold a limited frame buffer. Because flash and SRAM are modest, use short commands and streaming algorithms rather than buffering large datasets in memory.
추천
Consumer Appliance User Interface
The ATTINY48-MMU can support a compact appliance control panel with button inputs, indicator control, and a simple analog measurement. The GPIO handles user commands, the timer/counter supports periodic scanning or display timing, and the ADC can monitor a product input through a conditioned analog signal. Its 4 KB of flash is adequate for a focused user-interface routine when a separate host handles complex graphics or connectivity. The 1.8 V to 5.5 V operating range supports integration into mixed-voltage consumer electronics, subject to careful grounding and decoupling.
추천
엔지니어링 참조 데이터: ATTINY48-MMU — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ATTINY48-MMHR | ATTINY88-MMU | ATTINY88-MMHR | ATTINY88-MMH |
|---|---|---|---|---|---|
| Package | 28-pin VQFN (4 x 4 mm) | 28-pin VQFN (4 x 4 mm) | 28-pin VQFN (4 x 4 mm) | 28-pin VQFN (4 x 4 mm) | 28-pin VQFN (4 x 4 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 12 MHz | 12 MHz | 12 MHz | 12 MHz | 12 MHz |
| Flash Memory | 4 KB | 4 KB | 8 KB | 8 KB | 8 KB |
| SRAM | 256 bytes | 256 bytes | 512 bytes | 512 bytes | 512 bytes |
| Core Architecture | 8-bit AVR enhanced RISC | 8-bit AVR enhanced RISC | 8-bit AVR enhanced RISC | 8-bit AVR enhanced RISC | 8-bit AVR enhanced RISC |
주요 차별점
- Lower flash capacity than the related ATtiny88 drop-in candidates (vs ATTINY88-MMU)
- Direct 1.8 V to 5.5 V operating range (vs ATTINY88-MMU)
- Compact 28-pin 4 x 4 mm VQFN implementation (vs ATTINY48-MU)
설계 노트
Use the manufacturer’s 28-pin VQFN land pattern and exposed-pad connection exactly as documented. Place the VCC decoupling capacitor close to the supply pins with a short return path to ground, and connect the exposed pad using the recommended via and copper arrangement. Check paste volume and assembly tolerances because an incorrect thermal-pad pattern can affect soldering and heat transfer.
Separate analog and digital return paths where practical. Route the 10-bit ADC input away from ISP clock, SPI, switching-node, and high-current return paths; terminate unused analog inputs according to the datasheet guidance. If precision measurements are required, use a quiet analog ground region and consider a separate regulator section instead of routing sensitive signals through the main digital return area.
Do not substitute ATTINY48-MU for ATTINY48-MMU without changing the PCB footprint because cross-reference information identifies 32-pin and 28-pin packages respectively. Likewise, verify the device family, temperature grade, and suffix before fitting an ATtiny88 variant. The ATtiny88 provides more memory, but its firmware, fuse, and peripheral configuration must still be validated.
The 4 KB flash and 256-byte SRAM constrain code and data allocation, so use linker-aware memory planning and avoid unnecessary library overhead. Select the clock source and operating mode from the manufacturer power-control guidance, and measure sleep current in the final board. External pull-ups or level shifters on ISP and debugWIRE pins can materially affect low-power standby consumption.
규정 준수 정보
The product summary does not state the exact-package material compliance status. Obtain current declarations for the exact ATTINY48-MMU ordering code before production release.
