ATTINY87-MU - 8-Bit 16MHz AVR MCU with LIN | Microchip
料号： ATTINY87-MU ✓ 量产中ATTINY87-MU 概述
An 8-bit microcontroller is a compact embedded controller used to read inputs, execute programmed logic, and control outputs in products such as automotive body modules, communication equipment, and industrial controls. The ATTINY87 belongs to the AVR family of 8-bit RISC-based microcontrollers and combines low-power operation, in-system programmability, timers, serial interfaces, and analog-control resources in one integrated circuit.
Verified device features include 8 KB of ISP flash memory, 512 B of EEPROM, 512 B of SRAM, 16 general-purpose I/O lines, 32 general-purpose working registers, an 8-bit timer/counter with compare modes, and an 8-bit timer/counter. The 16 MHz operating frequency supports deterministic control-loop execution, while the integrated LIN controller makes the device suitable for local vehicle or industrial communication networks.
The ATTINY87-MU is identified by the MU package suffix and is supplied in a 32-pin VQFN with an exposed pad according to the Arrow listing. The exposed thermal and electrical pad must be connected according to the manufacturer package guidance. Because the device is a compact surface-mount microcontroller, PCB layout, programming access, decoupling, and exposed-pad handling determine whether the expected performance is achieved.
Typical applications include LIN-connected automotive modules, body-control and interface electronics, low-speed serial communication, sensor conditioning, actuator control, and compact embedded control boards. The 8 KB flash capacity is appropriate for small control firmware, while the SRAM and EEPROM support working state and nonvolatile configuration data.
When designing around the ATTINY87-MU, verify the exact electrical limits, pin names, programming interface, clock configuration, and package recommendations against the current Microchip datasheet. Use the exposed pad as specified by the package design, place decoupling close to the supply pins, and confirm that the PCB footprint matches the 32-pin VQFN 5 mm by 5 mm package. This page combines verified product-page data, distributor availability information, and application guidance for engineers evaluating the ATTINY87-MU.
直接替换替代料： ATTINY87-MU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料ATTINY87-MU 最大额定值与电气特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| Architecture | AVR 8-bit RISC |
| 最大时钟频率 | 16 MHz |
| Program Memory | 8 KB Flash, 4K x 16 |
| EEPROM | 512 B |
| SRAM | 512 B |
| General-Purpose I/O Lines | 16 |
| General-Purpose Working Registers | 32 |
| Timer/Counter | 8-bit timer/counter with compare modes |
| LIN Controller | Integrated LIN controller |
| 电源电压 | 2.5 V to 5 V |
| 封装 | 32-pin VQFN, 5 mm x 5 mm |
| 安装类型 | Surface mount |
| Exposed Pad | Exposed pad package variant |
| Packaging | Tray |
| 生命周期状态 | Active |
| Programming Interface | In-system programmable flash |
ATTINY87-MU 32-pin vqfn, 5 mm x 5 mm 引脚配置指南
ATTINY87-MU（32-pin vqfn, 5 mm x 5 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： ATTINY87-MU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATTINY87-MU 适用于 6 应用s: LIN-Connected Automotive Control Module, Body and Interface Electronics, Industrial Sensor Node, Low-Speed Communication Peripheral, Compact Power-Control Module, Educational and Embedded-Control Platform.
LIN-Connected Automotive Control Module
The ATTINY87-MU fits compact LIN nodes that combine local actuator or sensor control with a vehicle network connection. Its verified 16 MHz AVR core provides deterministic execution for control logic, while 16 general-purpose I/O lines leave interface flexibility for inputs, outputs, and status signals. The integrated LIN controller avoids adding a separate protocol-focused controller when the design can meet the electrical and timing requirements of the network. With 512 B of SRAM, 512 B of EEPROM, and 8 KB of Flash, the device supports compact firmware, configuration storage, and communication state management. The 32-pin VQFN package also supports dense PCB placement, although the exposed pad and programming interface must be laid out according to the current Microchip package guidance.
推荐
Body and Interface Electronics
ATTINY87-MU is suitable for small body-control or interface modules that translate discrete sensor and switch inputs into controlled outputs. Its 16 I/O lines can support digital sensing, alarm inputs, indicator control, and simple actuator interfaces without requiring a larger processor when the application remains control-oriented. The 16 MHz clock provides useful timing margin for debouncing, state machines, and communication servicing, and the integrated timer/counter resources assist with periodic tasks. Firmware can use the 8 KB Flash program area for control routines and the EEPROM for persistent configuration. The 5 mm by 5 mm VQFN outline helps reduce board area, but engineers should preserve thermal-pad access and test programming pads during layout.
推荐
Industrial Sensor Node
ATTINY87-MU can serve as the local controller in a compact sensor node when the design needs moderate processing, digital I/O, and network capability in one device. Its 16 general-purpose I/O lines can be assigned to sensor inputs, threshold control, status indicators, and external interface signals. The verified 16 MHz operating frequency supports responsive state-machine execution, while the 512 B SRAM can hold transient sensor and protocol data. The integrated LIN controller is useful where the node must participate in a local bus, although a LIN transceiver and connector are still required at the board level. Designers should verify analog sensing resources and exact peripheral availability in the full datasheet before selecting it for a purely analog sensor front end.
推荐
Low-Speed Communication Peripheral
ATTINY87-MU is appropriate for a peripheral that converts local commands into a low-speed serial network. The integrated LIN controller can handle the protocol-related controller function, while the AVR core manages buffering, device state, diagnostics, and host commands. Its 8 KB Flash provides space for a focused protocol stack and application logic, and the EEPROM can retain address, calibration, or configuration values. The 16 I/O lines provide connection points for configuration straps, fault indicators, and auxiliary control signals. Because the verified excerpts do not specify LIN electrical characteristics, use a qualified external transceiver and confirm protocol timing, fault handling, and supply requirements against the full manufacturer documentation.
推荐
Compact Power-Control Module
The ATTINY87-MU can be used in a compact control module that supervises relays, indicators, or other low-power peripheral loads when the output stage is implemented separately. The 16 MHz AVR core can execute sequencing logic, timers, and fault-management routines, while the 16 I/O lines support control inputs and status feedback. The 512 B EEPROM is useful for storing operating parameters and calibration data across power cycles. The device should not be assumed to drive loads directly: verify output-driver ratings, external transistor or driver selection, current limits, and protection requirements in the complete datasheet and circuit design. The small VQFN package helps reduce board area but requires careful exposed-pad and thermal-layout review.
推荐
Educational and Embedded-Control Platform
ATTINY87-MU works as a compact platform for embedded-control education because it combines an AVR RISC core, in-system programmable Flash, EEPROM, SRAM, timers, I/O, and LIN capability in one package. Students can use the 16 MHz clock to study interrupt-driven control, timer-based sequencing, digital I/O, persistent configuration, and low-speed serial communication. The 32-pin VQFN footprint makes careful footprint and exposed-pad training necessary, and the relatively small 8 KB Flash capacity encourages efficient firmware design. The verified data does not include a development-board ecosystem or programming adapter specification, so the platform should be paired only with a programmer and accessory hardware confirmed to support the exact Microchip device and package.
推荐
推荐产品汇总
工程参考数据： ATTINY87-MU ——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 | ATTINY861A-MU | ATTINY167-MU | ATMEGA128A-MU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
关键差异点
- Integrated LIN controller in the documented ATtiny87 feature set （对比 ATMEGA128A-MU)
- 16 MHz maximum frequency （对比 ATTINY861A-MU)
- Compact 8 KB Flash configuration with 512 B EEPROM （对比 ATTINY167-MU)
- Compact 32-pin VQFN implementation （对比 ATMEGA128A-MU)
设计说明
Use the current Microchip 32-pin VQFN land pattern and preserve the exposed-pad connection exactly as specified in the package documentation. Place local decoupling close to the supply and ground pins, route high-current returns away from sensitive signal paths, and keep programming access reachable for manufacturing. Do not substitute a generic 32-QFN footprint solely because the body size appears similar; pad geometry and exposed-pad treatment are part of the device definition.
The verified distributor data lists ATTINY87-MU for 2.5 V, 3.3 V, and 5 V operation, but detailed electrical limits were not supplied. Confirm the complete operating-voltage and current specifications before selecting a regulator or designing a power budget. Account for peak load from peripherals and communication circuitry, and use local bulk and high-frequency decoupling as recommended in the full datasheet and reference design.
Do not treat ATTINY87-MU, ATTINY861A-MU, or ATTINY167-MU as interchangeable solely because they are related AVR devices and have related QFN packages. The supplied comparison data shows different clock ratings and does not establish complete pin compatibility. Review the exact pin names, alternate functions, interrupt vectors, memory map, timer resources, LIN implementation, programming signals, and exposed-pad connection before approving a replacement.
For LIN or other switching communication interfaces, keep the digital control signals away from sensitive analog or timing-critical nodes and provide a clean return path for the exposed pad. Check the required external transceiver, connector, protection network, and ground strategy in the board schematic. Because the verified data does not include the full pinout or analog-resource table, do not assign pins solely from the 16-line I/O count; use the manufacturer pin description and package drawing.
Estimated: the supplied excerpts do not provide maximum supply voltage, active current, or exposed-pad thermal resistance, so a numerical junction-temperature calculation would be speculative. Design the PCB with the manufacturer-recommended exposed-pad copper and thermal-via arrangement, then verify temperature rise at the highest expected ambient temperature and operating current. If the MCU is a minor load in the system, thermal requirements may be modest, but they still need measurement or datasheet confirmation.
合规信息
The supplied verified excerpts identify the device as active and provide operating/package information, but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from current Microchip documentation or supplier declarations.
