ATTINY48-AU - 12MHz 8-Bit AVR MCU | Microchip
MPN： ATTINY48-AU ✓ 啟用中ATTINY48-AU 概覽
A microcontroller is a programmable system-on-chip that executes firmware, reads inputs, controls outputs, and manages embedded-system timing. The ATTINY48 belongs to the ATtiny family of 8-bit AVR microcontrollers, within the broader embedded-processing and semiconductor hierarchy. Its picoPower architecture targets efficient low-voltage operation in compact control products.
The verified device data identifies 8-bit and 16-bit timer/counters, a 16-bit timer/counter with PWM, a 10-bit analog-to-digital converter, SPI, and debugWIRE on-chip debugging. These peripherals support motor and LED control, sensor acquisition, serial communication, and firmware debugging without requiring separate components for each function. The manufacturer product page specifically lists 4 KB of ISP Flash, 64 B EEPROM, and 256 B SRAM for the ATtiny48 family.
Typical applications include compact industrial controls, sensor interfaces, LED and motor-control nodes, low-voltage embedded modules, and small consumer devices. The 1.8 V to 5.5 V operating range allows integration across common low-voltage systems, while the 32-TQFP package supports surface-mount manufacturing.
Designers should preserve the ATtiny48 pin assignments, power requirements, programming interface, and clock configuration when creating a PCB footprint. Because the supplied verified data does not expose a complete manufacturer pinout table, individual pin names are not asserted here. Verify the package drawing and datasheet before final layout release.
直接替換替代品，適用於 ATTINY48-AU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATTINY48-AU （相同外形與佔位） — 差異在於 Flash Memory, Package, SRAM, ADC Resolution, Product Type.
此產品無可直接替換的替代品。
申請替代品ATTINY48-AU 最大額定值與電氣特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| Architecture | AVR 8-bit RISC |
| 最大時脈頻率 | 12 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Throughput | Up to 12 MIPS at 12 MHz |
| Flash Memory | 4 KB ISP Flash |
| EEPROM | 64 bytes |
| SRAM | 256 bytes |
| ADC Resolution | 10-bit |
| Timer/Counter 0 | 8-bit timer/counter |
| Timer/Counter 1 | 16-bit timer/counter with PWM |
| Serial Interface | SPI |
| Debug Interface | debugWIRE |
| 封裝 | 32-TQFP, 7 mm × 7 mm |
| 安裝類型 | Surface mount |
| Core Architecture | picoPower AVR |
| Programming | In-system programming |
| Product Family | ATtiny |
| Manufacturer Product Page Status | Active listing |
ATTINY48-AU 32-tqfp, 7 mm × 7 mm 腳位配置指南
ATTINY48-AU（32-tqfp, 7 mm × 7 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATTINY48-AU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATTINY48-AU 適用於 6 應用s: Compact Industrial Sensor Interface, Low-Voltage Motor and LED Control, Embedded Communication Module, Battery-Powered IoT Sensor Node, Consumer Appliance Control Panel, Programmable Logic and Timing Module.
Compact Industrial Sensor Interface
The ATTINY48-AU is suitable for small sensor-interface nodes that need local acquisition and control without a higher-memory processor. Its verified 10-bit ADC supports analog sensor conditioning, while SPI provides a path to a sensor, transceiver, or external peripheral. The 1.8 V to 5.5 V operating range supports both low-voltage and common 3.3 V or 5 V system rails. The 256 bytes of SRAM is adequate for short sampled-data workflows, but firmware must avoid unnecessary buffers. The 32-TQFP package also provides a compact surface-mount footprint for space-constrained industrial electronics.
推薦
Low-Voltage Motor and LED Control
The ATTINY48-AU can serve as the local controller in a small LED or motor-control module where a 12 MHz AVR core provides deterministic timing and the verified 16-bit timer/counter with PWM supports waveform generation. Its operating range of 1.8 V to 5.5 V permits integration with low-voltage power systems, while the ADC can monitor a current or supply signal when the application requires feedback. Designers should account for the limited 256 bytes of SRAM and add suitable driver transistors or MOSFETs rather than driving loads directly from MCU pins.
推薦
Embedded Communication Module
The ATTINY48-AU is appropriate for a compact embedded module that needs a serial peripheral and protocol handling alongside basic control logic. Its verified SPI interface can connect to a radio, sensor, memory, or other SPI-compatible device, and debugWIRE provides a low-pin-count debugging route during development. The 4 KB Flash footprint favors concise firmware, making the device suitable for gateways, remote controls, and small peripheral nodes. SPI clocking, interrupt latency, and electrical limits should be checked against the connected peripheral and the ATtiny48 operating conditions.
推薦
Battery-Powered IoT Sensor Node
The ATTINY48-AU is a fit for a small battery-powered IoT sensing node when the design prioritizes low component count and a 1.8 V to 5.5 V operating range. The 10-bit ADC can digitize analog sensor outputs, while the 8-bit AVR core handles local thresholding, sampling, and actuator-control logic. The manufacturer identifies picoPower technology and up to 12 MIPS throughput, but actual battery life depends on the selected clock, sleep behavior, peripheral use, and board leakage. Use the datasheet to verify sleep-mode and operating-current data before finalizing the power budget.
推薦
Consumer Appliance Control Panel
The ATTINY48-AU can support a compact appliance or control-panel submodule that combines button or sensor inputs with LED indication and simple actuator sequencing. Its verified AVR architecture and timer peripherals support periodic control tasks, while the ADC can monitor analog feedback from a potentiometer or sensing network. The 32-TQFP package is practical for automated surface-mount assembly and keeps the controller footprint compact. Firmware must be structured around the limited SRAM and EEPROM, and safety-critical appliance functions require suitable protection and isolation beyond the MCU.
推薦
Programmable Logic and Timing Module
The ATTINY48-AU is suitable for a small programmable timing or logic module where deterministic 8-bit control is more appropriate than a high-performance application processor. Its 12 MHz maximum clock supports straightforward event sequencing, debounce logic, pulse generation, and supervisory functions. The 8-bit and 16-bit timers, PWM capability, and interrupt-driven architecture provide the core resources for such tasks. For designs requiring extensive logging, large protocol stacks, or multiple high-speed peripherals, select a higher-capacity MCU and validate the complete memory and peripheral allocation.
推薦
推薦產品摘要
工程參考資料，適用於 ATTINY48-AU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 32-TQFP, 7 mm × 7 mm |
| Brand | Microchip Technology |
| Architecture | 8-bit AVR RISC |
| Maximum Frequency | 12 MHz |
| Operating Voltage | 1.8 V to 5.5 V |
| Flash Memory | 4 KB ISP Flash |
| EEPROM | 64 bytes |
| SRAM | 256 bytes |
| ADC | 10-bit ADC |
| Serial Interface | SPI |
| Debug Interface | debugWIRE |
| Timer Resources | 8-bit timer/counter and 16-bit timer/counter with PWM |
主要差異化特點
- Compact 8-bit AVR controller with integrated mixed peripherals (對比ATTINY48-AUR)
- 12 MHz throughput in a compact 32-TQFP package (對比ATTINY28L-4AC)
- 4 KB ISP Flash with AVR ecosystem support (對比ATtiny48-MU)
設計說明
The verified operating range is 1.8 V to 5.5 V, so validate the supply rail against the selected clock speed and peripheral configuration. Place the required local decoupling close to the device power pins and keep analog and digital return paths controlled. Because the supplied data does not include application-current or regulator-dropout values, do not assume a specific supply headroom or regulator topology without consulting the manufacturer datasheet.
Use the manufacturer 32-TQFP package drawing to create the PCB footprint, including pin-1 orientation, lead pitch, pad length, and exposed or non-exposed thermal structure if applicable. The verified data confirms the 32-TQFP 7 mm × 7 mm package but does not provide the complete pin table, so release the layout only after checking the official package drawing and electrical pin assignments.
Do not substitute a functionally similar ATtiny device based only on memory size or family name. A valid replacement must match the exact package, pinout, voltage range, clock requirements, peripheral allocation, programming interface, and debug behavior. The supplied cross-reference results do not establish a qualified drop-in replacement, so production substitution should wait for manufacturer or distributor cross-reference evidence and a hardware review.
Keep SPI traces short and controlled, especially when connecting the ATTINY48-AU to an external sensor or transceiver. Route sensitive analog inputs away from switching nodes and high-current LED or motor paths, and provide a quiet ground reference for the 10-bit ADC. The verified material does not specify ADC input count or exact pin locations, so these layout actions must be coordinated with the final pin assignment.
合規資訊
The supplied verified data does not include RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 status is not applicable based on the provided product description, which does not identify an automotive-qualified variant.
