ATTINY167-MU - 16MHz AVR MCU with 16KB Flash | Microchip
N.º de pieza: ATTINY167-MU ✓ ActivoATTINY167-MU Descripción general
An 8-bit microcontroller is a compact digital controller built around a processor, nonvolatile program memory, data memory, and configurable input/output peripherals. The ATtiny family belongs to the TinyAVR segment of the AVR product hierarchy. These devices are commonly used where a control system needs deterministic embedded processing but does not require the memory, operating speed, or peripheral complexity of a high-end application processor.
The ATTINY167-MU provides 16 KB of ISP Flash, 512 bytes of EEPROM, and 512 bytes of SRAM for persistent configuration and working data. Its 16 general-purpose I/O lines support digital sensing and control, while its 32 general-purpose working registers support efficient execution of the AVR instruction set. The microcontroller also includes an 8-bit timer/counter with compare modes and an 8-bit high-speed timer/counter for periodic and timing-related functions.
Its AVR RISC architecture executes most instructions within a single clock cycle, which provides predictable behavior for motor, control, and interface tasks. The 16 MHz operating speed gives designers additional timing headroom over slower 8-bit implementations. The 32-pin VQFN package also includes an exposed pad according to the verified product listings, improving available heat-spreading area on the PCB when the device operates at elevated ambient temperatures or sustained computational load.
Typical applications include compact industrial controllers, sensor-conditioning systems, actuator controllers, LED sequencing, low-cost instrumentation, and embedded control modules. The 16 I/O lines make the part useful for products that need several digital inputs and outputs while retaining a small 5x5 mm footprint. Its 16 KB Flash capacity is also appropriate for moderate control firmware that must be programmed in-system through the AVR ISP interface.
The primary design consideration is matching firmware requirements to only 512 bytes of SRAM and 16 KB of Flash. Avoid interrupt handlers or library structures that require excessive stack space, and verify bootloader, application, and in-system programming requirements before final firmware allocation. PCB layouts must also follow the manufacturer's exposed-pad and thermal-land guidance rather than treating the VQFN as a conventional leaded package.
This page combines verified manufacturer and distributor specifications with package details, application guidance, engineering considerations, and a transparent assessment of drop-in replacement availability. That information helps buyers evaluate the ATTINY167-MU beyond basic catalog parameters while clearly identifying specifications and equivalent parts that could not be verified from the supplied sources.
Alternativas directas para ATTINY167-MU — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATTINY167-MU (mismo factor de forma y huella) — difiere en EEPROM, Package, Programming Interface, SRAM.
No hay alternativas directas disponibles para este producto.
Solicitar alternativasATTINY167-MU Valores máximos y características eléctricas
| Product Type | 8-bit AVR RISC-based microcontroller |
| Maximum Clock Speed | 16 MHz |
| Program Memory | 16 KB ISP Flash (8K x 16) |
| EEPROM | 512 bytes |
| SRAM | 512 bytes |
| General-Purpose I/O Lines | 16 lines |
| General-Purpose Working Registers | 32 registers |
| Processor Architecture | AVR RISC |
| Timer/Counter | 8-bit timer/counter with compare modes |
| High-Speed Timer/Counter | 8-bit high-speed timer/counter |
| Programming Interface | In-system programming (ISP) |
| Encapsulado | 32-pin VQFN (5x5 mm) |
| Package Thermal Feature | Exposed pad |
| Tipo de montaje | Surface mount |
| Operating Grade | Industrial grade |
| Power Profile | Low-power |
| Estado del ciclo de vida | Active |
Guía de configuración de pines de ATTINY167-MU exposed pad
Configuración de pines para ATTINY167-MU (encapsulado exposed pad). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATTINY167-MU.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATTINY167-MU es adecuado para 6 aplicacións: Compact Industrial Control Module, LED Sequencing and Indicator Control, Sensor Signal Conditioning, Actuator and Relay Sequencing, Low-Cost Test and Measurement Controller, Small Motor and Stepper Control.
Compact Industrial Control Module
The ATTINY167-MU fits compact industrial control modules that need several digital inputs and outputs without adopting a larger application processor. Its 16 general-purpose I/O lines can support digital sensors, status indicators, interlocks, and discrete actuator commands, while the 16 MHz AVR core provides useful timing headroom. The 512-byte SRAM and 512-byte EEPROM are suitable for limited working data and persistent configuration. Designers should budget the 16 KB Flash carefully and use a scheduled task structure so interrupt latency remains predictable under industrial-control workloads.
Recomendado
LED Sequencing and Indicator Control
The ATTINY167-MU is appropriate for LED sequencing, status panels, and programmable indicator controllers because it combines 16 general-purpose I/O lines with an 8-bit timer/counter and an 8-bit high-speed timer/counter. Software-driven patterns can be implemented in the 16 KB of ISP Flash, while the 512 bytes of EEPROM can retain selected configuration or animation parameters. For battery-operated installations, use timer-based updates and limit simultaneous output activity to reduce average current draw. Firmware should also account for the limited 512-byte SRAM when buffering display states.
Recomendado
Sensor Signal Conditioning
The ATTINY167-MU can act as a low-power sensor-conditioning and digital-aggregation controller in compact monitoring equipment. Sixteen I/O lines provide interfaces for discrete sensors, threshold inputs, and control signals, while the 16 MHz AVR RISC architecture supports deterministic sampling and filtering tasks. The 512-byte SRAM is sufficient for small working windows but not large sample buffers, so filtering should be streaming or tightly bounded. EEPROM can preserve calibration identifiers or operating thresholds, subject to the endurance limits specified by Microchip.
Recomendado
Actuator and Relay Sequencing
The ATTINY167-MU is suitable for actuator sequencing, relay control, and timed discrete-output systems where deterministic execution and multiple I/O lines matter. Its 32 general-purpose working registers and 16 MHz clock support responsive state-machine firmware, while the timer blocks can organize periodic tasks and event timing. The VQFN exposed pad provides a useful thermal path, although relay drivers and their switching circuitry—not the microcontroller—usually dominate board heat. Add protection for inductive loads and keep switching transients away from sensitive input traces.
Recomendado
Low-Cost Test and Measurement Controller
The ATTINY167-MU can support low-cost test fixtures, simple measurement instruments, and automated bench controllers that coordinate discrete inputs, indicators, and communications. Its 16 I/O lines and two timer/counter blocks are useful for stimulus timing and measurement sequencing, while 16 KB of ISP Flash accommodates moderate control firmware. Instrumentation designs must preserve analog accuracy through careful grounding and separation because the MCU itself does not provide verified high-resolution ADC specifications in the supplied data. External converters or specialized analog ICs may therefore be required.
Recomendado
Small Motor and Stepper Control
The ATTINY167-MU can implement simple position, speed, or sequence control for small motors when the application also includes suitable external driver circuitry. The 16 MHz AVR core and 8-bit high-speed timer/counter support event timing, while 16 I/O lines accommodate step commands, direction signals, limits, and interlocks. Because only 512 bytes of SRAM are available, motion algorithms must avoid large history buffers and should use fixed-point or compact state representations. External transistor stages, current limiting, and fault shutdown remain necessary for safe motor operation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATTINY167-MU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto |
|---|---|
| Brand | Microchip Technology |
| Package | 32-pin VQFN (5x5 mm) |
| Product Type | 8-bit AVR RISC microcontroller |
| Maximum Clock Speed | 16 MHz |
| Program Memory | 16 KB ISP Flash |
| EEPROM | 512 bytes |
| SRAM | 512 bytes |
| General-Purpose I/O Lines | 16 lines |
| General-Purpose Working Registers | 32 registers |
| Timer Resources | 8-bit timer/counter with compare modes and 8-bit high-speed timer/counter |
Diferenciadores clave
- Twice the program memory of the listed ATTINY87-MU alternative (frente a ATTINY87-MU)
- Sixteen general-purpose I/O lines for compact control designs (frente a ATTINY87-MU)
- Dual timer resources for timing and sequencing (frente a ATTINY861A-MU)
Notas de diseño
Follow the manufacturer's recommended VQFN land pattern and exposed-pad connection exactly. The supplied listings confirm a 32-pin 5x5 mm VQFN with an exposed pad, but they do not provide verified pad dimensions, stencil recommendations, or solder-mask clearances. Obtain those values from the official ATtiny87/167 datasheet before releasing artwork. Provide an uninterrupted ground path beneath the exposed pad and use thermal vias only where the package guidance permits them.
Decouple the MCU supply locally and keep return-current paths short, especially when digital outputs switch nearby analog or timing-sensitive circuitry. The supplied data confirms a low-power 16 MHz AVR device but does not provide verified supply-voltage limits, decoupling-capacitor values, or active-current figures. Select those values from the manufacturer datasheet, place bulk and high-frequency decoupling according to that guidance, and avoid routing switching-node currents beneath the exposed thermal region.
Do not substitute ATTINY167-MUR as a distinct engineering alternative or assume ATTINY87-MU is interchangeable. The former is an ordering-packaging variant, while the latter provides 8 KB of Flash instead of 16 KB. A true redesign must verify every pin, power input, programming signal, reset connection, peripheral mapping, and exposed-pad land. Firmware must also be tested against the SRAM limit of 512 bytes, including interrupt-stack requirements, rather than checking only nominal application code size.
Keep the AVR ISP programming interface accessible for production programming and reserve clear test points for programming, reset, ground, and supply where practical. Route sensitive timing or measurement inputs away from fast-changing outputs and motor-driver switching traces. Although the ATtiny167-MU uses timers for deterministic tasks, PCB return-path discontinuities can still affect timing accuracy. Maintain a continuous ground reference under the MCU and use short signal paths from I/O pins to nearby protection or driver circuitry.
Información de cumplimiento
The supplied excerpts do not contain a definitive environmental or material-compliance declaration for the exact ATTINY167-MU MPN. AEC-Q100 is marked not applicable because the device is not identified as an automotive-qualified part in the provided data.
