ATTINY167-XU - 16MHz 16KB AVR Microcontroller | Microchip
料号： ATTINY167-XU ✓ 量产中ATTINY167-XU 概述
An AVR microcontroller is a low-power programmable controller built around the AVR RISC instruction set. Its place in the product hierarchy is microcontroller > embedded controller > semiconductor, while the ATTINY167 belongs to the ATtiny family of small 8-bit RISC microcontrollers. These devices combine digital control, timers, serial interfaces, and analog functions in one integrated package, allowing compact products to replace combinations of discrete logic and analog components.
Key features include 16 KB of ISP Flash program memory, 512 bytes of EEPROM, 512 bytes of SRAM, 32 general-purpose working registers, and an 8-bit timer/counter with compare modes. The device also provides a high-speed timer/counter, supporting applications that require precise timing, periodic events, input capture, or waveform generation. Its 16 general-purpose I/O lines provide flexible connections for switches, sensors, indicators, actuators, and communication peripherals.
The ATTINY167 combines a high-performance 8-bit RISC core with on-chip nonvolatile storage and a compact peripheral set. ISP programming supports in-system firmware updates when the circuit provides the required programming access. The 512-byte SRAM is suitable for small control loops, state machines, communication buffers, and mixed analog-digital logic, while the 512-byte EEPROM preserves calibration values, configuration settings, counters, or product data when power is removed.
Typical applications include compact industrial controllers, low-power sensor nodes, building and appliance controls, LED drivers, compact power-conversion controllers, and small motor-control systems. It is especially useful where an 8-bit architecture, deterministic peripheral timing, and space-efficient TSSOP packaging are more valuable than the processing power of a 32-bit MCU.
PCB implementation should preserve access to the programming interface and provide the decoupling and clock arrangement specified by the manufacturer datasheet. Confirm ADC, timer, and communication pin assignments before fixing the board layout because peripheral functions can share I/O pins. For battery-powered equipment, calculate the average current from active-mode and power-sleep behavior rather than relying only on the maximum clock frequency.
This page combines the ATTINY167-XU electrical characteristics, drop-in replacement guidance, application analysis, and design notes to support faster component selection and PCB implementation.
直接替换替代料： ATTINY167-XU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATTINY167-XU （相同外形与封装尺寸） ——差异在于 General-Purpose I/O Lines, General-Purpose Working Registers.
ATTINY167-XUR
✅ 直接替换📋 参考替代料（不在目录中）
ATTINY87-XU
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →ATTINY167-XU 最大额定值与电气特性
| Product Type | 8-bit AVR RISC microcontroller |
| Maximum Clock Speed | 16 MHz |
| Program Memory Type | ISP Flash |
| Program Memory Size | 16 KB |
| Program Memory Organization | 8K x 16 words |
| EEPROM Size | 512 bytes |
| SRAM Size | 512 bytes |
| General-Purpose I/O Lines | 16 lines |
| General-Purpose Working Registers | 32 registers |
| Timer/Counter Resolution | 8-bit |
| Timer/Counter Features | Compare modes and high-speed timer/counter |
| Core Architecture | AVR RISC |
| Programming Interface | In-system programming (ISP) |
| 封装 | 20-pin TSSOP |
| 安装类型 | Surface mount |
ATTINY167-XU 20-pin tssop 引脚配置指南
ATTINY167-XU（20-pin tssop 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： ATTINY167-XU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATTINY167-XU 适用于 6 应用s: Compact Industrial Control Modules, Battery-Powered Sensor Nodes, LED Lighting and Dimming Control, Appliance and User-Interface Control, Small Motor and Actuator Controllers, Programmable Logic and Sequence Control.
Compact Industrial Control Modules
The ATTINY167-XU fits compact industrial control modules that coordinate switches, sensors, status indicators, and small actuators. Its 16 MHz maximum clock supports responsive task execution, while 16 general-purpose I/O lines provide connections for digital inputs, outputs, and alternate peripheral functions. The 16 KB ISP Flash offers practical room for a bootloader or application logic, and 512 bytes of EEPROM can preserve calibration or configuration values between power cycles. A 20-pin TSSOP also helps reduce board area in space-constrained equipment. The primary design consideration is peripheral pin multiplexing: allocate timer, communication, and analog functions before fixing the PCB, and use the manufacturer pin-description table to verify each signal.
推荐
Battery-Powered Sensor Nodes
The ATTINY167-XU can serve as the control center for a battery-powered sensor node that periodically reads an analog or digital sensor, applies filtering, and transmits a result. Its low-power AVR architecture and sleep-capable operating modes help reduce average energy use, while 512 bytes of SRAM accommodates modest buffering and state-machine processing. The 16 I/O lines permit sharing among sensor inputs, wake controls, status feedback, and a low-speed communications link. EEPROM can retain node configuration and counters without consuming the limited SRAM. For predictable battery life, measure the duty cycle of active conversion and communications, keep sensor excitation pulses short, and confirm the external watchdog or sleep-reset strategy in the final design.
推荐
LED Lighting and Dimming Control
The ATTINY167-XU is appropriate for LED lighting controllers that require timed fades, pulse patterns, status indicators, and programmable drive sequences. Its timers can generate repeatable timing events, and the 16 I/O lines provide outputs for LED channels, enable lines, pushbuttons, and fault indicators. The 16 KB Flash is useful for storing multiple lighting scenes and calibration parameters, while 512 bytes of EEPROM can retain user settings between power cycles. PWM-capable peripheral assignments should be selected in advance because timer channels can occupy specific I/O pins. Keep high-current LED drive transistors and their switching paths physically separated from sensitive control signals, and provide adequate local bypassing at the MCU supply pins.
推荐
Appliance and User-Interface Control
The ATTINY167-XU supports appliance and user-interface designs that combine button inputs, LED feedback, small displays, motors, and configuration storage. Its 16 MHz clock permits responsive debouncing and menu logic, and 16 I/O lines provide enough external connections for a compact front-panel controller. The 512-byte EEPROM is useful for saving operating modes, calibration values, and user preferences, while ISP programming simplifies firmware updates during development or production. Interface signals for displays and actuators should be selected with attention to timer and serial-function multiplexing. Keep power-switching stages and motor drivers outside the MCU package, use common ground reference paths, and validate brownout behavior across the complete appliance supply range.
推荐
Small Motor and Actuator Controllers
The ATTINY167-XU can control small motors, solenoids, heaters, or other actuators where deterministic timing and several discrete I/O functions are required. Its 8-bit timer/counter with compare modes, high-speed timer/counter, and 16 MHz clock allow software to generate pulses, measure intervals, and coordinate multiple actuator events. The 20-pin TSSOP footprint supports compact boards, and 512 bytes of SRAM is enough for modest motion sequences and state management. A practical design should use transistor or MOSFET driver stages rather than driving loads directly from MCU pins. Confirm timer output assignments during schematic design, keep high-current switching loops compact, and include protection for inductive loads and any exposed connector wiring.
推荐
Programmable Logic and Sequence Control
The ATTINY167-XU is suitable for programmable logic and sequence-control tasks such as access controls, interlocks, signal conditioning, and automated test fixtures. The AVR RISC core executes a 16 KB program from ISP Flash, while 32 working registers support compact state-machine and arithmetic routines. Sixteen I/O lines allow the controller to combine inputs, outputs, counters, and timer events without requiring a large external logic device. EEPROM can store configuration, test offsets, or operating counters that must survive power loss. Keep the design deterministic by avoiding blocking delays where a timer or interrupt is appropriate, reserve programming access for production, and test every input and output state across startup, reset, and power-loss conditions.
推荐
推荐产品汇总
工程参考数据： ATTINY167-XU ——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 | ATTINY167-XUR | ATtiny87-XU |
|---|---|---|---|
| Package | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | AVR RISC | AVR RISC | AVR RISC |
| Programming Interface | In-system programming (ISP) | In-system programming (ISP) | In-system programming (ISP) |
关键差异点
- Full-size program memory in the same compact package （对比 ATtiny87-XU)
- Exact device alternative for assembly-format flexibility （对比 ATTINY167-XUR)
- Sixteen general-purpose I/O lines for compact embedded control （对比 ATTINY167-XUR)
设计说明
Place the required bypass capacitors close to the corresponding ATTINY167-XU supply pins and route them with short, low-loop-area paths. Keep the ISP programming signals accessible for production programming, and follow the manufacturer layout guidance for the clock and analog sections. Because several peripherals can share I/O pins, freeze the pin-assignment table before routing and provide test points for critical supply, reset, programming, and communication signals.
Do not treat every exposed 20-pin position as a dedicated application signal until alternate functions and power requirements have been checked in the manufacturer pin-description table. Firmware built for the full ATTINY167 memory arrangement must also be recompiled and verified against the memory map before it is moved to an ATtiny87-based assembly. For ATTINY167-XUR substitution, confirm reel orientation, tape dimensions, and suffix handling with the assembly house.
Estimated: calculate average supply current from the selected clock, active-mode duration, sleep duration, and peripheral loading rather than using the maximum clock rate as a complete power estimate. Example formula: average current equals active current multiplied by active duty cycle plus sleep current multiplied by sleep duty cycle. Apply the resulting current to the supply design, then confirm startup, brownout, and regulator-headroom behavior against the manufacturer's electrical limits.
Separate MCU signal routing from motor, relay, heater, and mains-connected switching stages. Keep high-current return currents out of the MCU ground reference path, use a compact power-stage layout, and place interface protection near connectors. If analog measurement is used, route sensitive inputs away from switching nodes, maintain a continuous ground reference, and use the manufacturer channel guidance when selecting ADC-capable pins.
合规信息
Compliance attributes were not explicitly identified in the cited material. Confirm RoHS, REACH, automotive qualification, lead-free, halogen-free, and conflict-minerals status using the current manufacturer product documentation and the exact orderable MPN.
