ATTINY48-PU - 4KB, 12MHz 8-Bit AVR MCU | Microchip
料号： ATTINY48-PU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATTINY48-PU 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, Flash program memory, data memory, I/O ports, and peripherals on one chip. The ATTINY48 belongs to the ATtiny AVR family, a low-power 8-bit microcontroller family commonly used for cost-sensitive embedded control. Its integrated peripherals allow a design to replace separate logic devices, timers, and interface components when processing requirements are modest.
The ATTINY48-PU provides 4 KB of In-System Programmable Flash memory organized as 2K × 16 words, plus 256 bytes of SRAM and 64 bytes of EEPROM according to the supplied comparison source. It includes I2C and SPI connectivity, timer and PWM resources, and a 12 MHz operating speed. The 1.8 V to 5.5 V supply range supports operation across common embedded supply domains while allowing lower-voltage designs to reduce power consumption.
The 28-pin PDIP package provides a through-hole format suitable for prototypes, educational projects, and manually assembled boards. Its larger lead spacing is easier to access with a breadboard or through-hole PCB than a fine-pitch surface-mount package. The tradeoff is greater board area compared with a surface-mount MCU, so the package is usually favored where assembly convenience matters more than minimum footprint.
Typical uses include sensor nodes, simple motor or actuator controllers, LED status indicators, low-cost instrumentation, and embedded interface modules. The 12 MHz clock provides ample timing resolution for many control loops, while the 4 KB Flash limit requires careful firmware sizing. Applications requiring substantially more code, RAM, or high-speed processing should use a larger AVR or another microcontroller family.
When laying out a design, place decoupling capacitors close to the supply pins and route programming, reset, and clock signals away from noisy switching nodes. Confirm the device’s pin functions, operating voltage, and programming requirements against the manufacturer datasheet before layout release. This page consolidates distributor sourcing data, package information, application guidance, and verified replacement limitations.
直接替换替代料： ATTINY48-PU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ATTINY48-12PU
✅ 直接替换📋 参考替代料（不在目录中）
ATTINY48-PU
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →ATTINY48-PU 最大额定值与电气特性
| Product Type | 8-bit AVR microcontroller |
| Architecture | AVR enhanced RISC |
| Maximum Clock Speed | 12 MHz |
| Flash Memory | 4 KB (2K × 16 words) |
| SRAM | 256 bytes |
| EEPROM | 64 bytes |
| Supply Voltage Range | 1.8 V to 5.5 V |
| 封装 | 28-pin PDIP |
| Package Dimensions | 0.300 inch, 7.62 mm |
| I/O Communication | I2C and SPI |
| Core Width | 8-bit |
| Programmable Flash | In-system programmable Flash |
| Throughput | Approaching 1 MIPS per MHz |
| 安装类型 | Through-hole |
| Supplier Listing Voltage | 2.5 V / 3.3 V / 5 V |
| Manufacturer | Microchip Technology |
ATTINY48-PU 0.300 inch, 7.62 mm 引脚配置指南
ATTINY48-PU（0.300 inch, 7.62 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATTINY48-PU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATTINY48-PU 适用于 6 应用s: Low-Voltage Sensor Node, Compact Motor and Actuator Control, LED Status and User Interface Controller, Small Communication Interface, Educational and Prototype Controller, Simple Data Acquisition Front End.
Low-Voltage Sensor Node
The ATTINY48-PU fits compact sensor nodes that need local acquisition, status logic, and periodic communications without a large application processor. Its 8-bit AVR core and 12 MHz maximum clock provide responsive handling for sampling, thresholding, filtering, and control-state updates. The 4 KB Flash limit favors small, focused firmware, while the 256-byte SRAM and 64-byte EEPROM support limited buffering and retained configuration. I2C or SPI can connect a sensor or external memory device, subject to exact pin verification. Operating from 1.8 V to 5.5 V allows the controller to share the product’s supply architecture, but the designer must budget code size and confirm every peripheral’s voltage tolerance before release.
推荐
Compact Motor and Actuator Control
ATTINY48-PU is suitable for small actuator-control boards that sequence relays, stepper-related signals, fans, or simple motors. The 12 MHz clock gives adequate resolution for debouncing, pulse timing, fault handling, and PWM-related peripheral configuration, while the AVR core keeps firmware straightforward. Its 4 KB Flash capacity is well matched to dedicated control routines rather than sophisticated motion algorithms. Use the integrated timers and I/O efficiently, and add appropriate transistor drivers, flyback protection, and current limiting. Because the verified data does not specify a motor-driver output rating, validate every external drive stage independently and confirm timer pin functions against the manufacturer datasheet.
推荐
LED Status and User Interface Controller
ATTINY48-PU can manage LED indicators, pushbuttons, displays, and local user-interface logic in a small embedded product. The 12 MHz maximum clock supports debouncing and periodic display updates, while the 8-bit architecture keeps code simple for state machines and indicator patterns. Four kilobytes of Flash may be sufficient for a dedicated interface controller, but it should not be loaded with unrelated application features. I2C and SPI connectivity can help connect a display or peripheral when the exact device pinout supports the intended function. Keep indicator drive currents within the MCU limits, use current-limiting resistors, and place timing-critical traces away from switching-power nodes.
推荐
Small Communication Interface
ATTINY48-PU is useful as a secondary communication controller when the main system needs a compact protocol front end. Its I2C and SPI connectivity can connect to sensors, transceivers, or storage devices, while the 12 MHz AVR core handles framing, commands, checksums, and simple acknowledgements. The 4 KB Flash limit makes this approach most effective for narrowly defined protocols or gateways with modest protocol complexity. Verify which peripheral pins are exposed on the 28-pin PDIP package and confirm whether external pull-ups or level translation are required. A dedicated UART implementation may depend on software timing, so test the chosen baud rate and interrupt latency on production hardware.
推荐
Educational and Prototype Controller
ATTINY48-PU is well suited to breadboard prototypes, engineering education, and small proof-of-concept boards because its 28-pin PDIP package is easy to access with a standard DIP socket. The 4 KB Flash memory and 12 MHz clock support introductory embedded-C projects involving timers, interrupts, I2C, SPI, and GPIO control. Students can develop firmware without resorting to a complex development board, while the 1.8 V to 5.5 V range permits operation across common bench supply levels. Because no numeric price or guaranteed stock quantity was supplied, procurement should be confirmed before a classroom or prototype build. Include a regulated supply, decoupling, programming access, and a clear reset arrangement in the prototype schematic.
推荐
Simple Data Acquisition Front End
ATTINY48-PU can serve as a compact data-acquisition front end when the design needs sampling, thresholding, averaging, and local status reporting rather than high-resolution processing. Its 8-bit AVR core and 12 MHz clock are suitable for basic control-loop timing and periodic conversions, while I2C or SPI can connect external sensors or converters. The 256-byte SRAM and 64-byte EEPROM constrain buffering, so the firmware should stream or summarize data rather than retain large histories. Select sensor interfaces with voltage levels compatible with the 1.8 V to 5.5 V supply range, and account for analog noise, grounding, and decoupling. Exact peripheral timing and pin assignment must be checked in the official ATTINY48 documentation.
推荐
推荐产品汇总
工程参考数据： ATTINY48-PU ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATTINY48-12PU | ATTINY48-PU |
|---|---|---|---|
| Package | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit AVR | 8-bit AVR | 8-bit AVR |
| Maximum Clock | 12 MHz | 12 MHz | 12 MHz |
| Flash Memory | 4 KB | 4 KB | 4 KB |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Serial Connectivity | I2C and SPI | I2C and SPI | I2C and SPI |
| SRAM | 256 bytes | 256 bytes | 256 bytes |
| EEPROM | 64 bytes | 64 bytes | 64 bytes |
关键差异点
- Through-hole 28-pin PDIP format （对比 ATTINY48-MU)
- 4 KB Flash configuration （对比 ATTINY88-PU)
- 12 MHz AVR control platform （对比 ATTINY48-12PU)
设计说明
Place the required supply-decoupling capacitor as close as practical to the ATTINY48-PU power pins and keep the return path short. The verified operating range is 1.8 V to 5.5 V, so validate the regulator’s startup, load transient, and noise behavior at the lowest intended supply. Do not connect peripherals whose input thresholds exceed the selected MCU voltage without level shifting or protection.
The 28-pin PDIP format is easy to probe, but signal integrity still depends on a deliberate layout. Keep reset, programming, and clock traces away from motor nodes, switching inductors, and high-current return paths. Provide accessible test points and maintain a stable ground reference around the MCU. Verify the exact pin numbering and alternate-function assignments from the manufacturer package drawing before fabrication.
Do not treat related ATtiny devices as automatic replacements. ATTINY88-PU has different memory capacity, while ATTINY48-MU uses a different package according to the supplied comparison data. Before substituting either part, compare pin functions, Flash, SRAM, EEPROM, clock rating, voltage limits, programming method, and board footprint. Firmware compatibility alone is not proof of hardware compatibility.
合规信息
The supplied verified results identify the manufacturer and device specifications but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-mineral status.