ATTINY827-MU - 20MHz 8KB AVR MCU | Microchip Technology
MPN: ATTINY827-MU ✓ ActiveATTINY827-MU Overview
A microcontroller is a programmable integrated circuit that combines a processor core, nonvolatile program memory, data memory, and peripherals in one compact device. The ATTINY827 belongs to the hierarchy of tinyAVR 2-series microcontrollers, AVR 8-bit microcontrollers, embedded controllers, and integrated circuits. Its compact package makes it suitable for space-constrained control systems, while its hardware multiplier supports efficient multiplication operations in embedded software.
The principal memory resources are 8 KB of Flash for firmware, 1 KB of SRAM for working data, and 128 bytes of EEPROM for nonvolatile data retention. Execution up to 20 MHz provides useful processing margin for event-driven control, monitoring, and communication-oriented firmware. The 24-pin VQFN arrangement also supports compact PCB construction in applications where the 4 x 4 mm footprint is valuable.
The tinyAVR 2 family uses a flexible, low-power architecture and incorporates Core Independent Peripherals, as identified by the manufacturer product page. These characteristics make the ATTINY827-MU relevant to embedded designs that require deterministic low-power control without the memory and processing demand of a high-end application processor. Firmware designers should select the operating frequency and peripherals required by the target system from the complete family datasheet.
Typical uses include compact industrial control modules, environmental monitoring nodes, LED and lighting controllers, consumer-product interfaces, and small embedded subsystems. Its 1 KB SRAM is suitable for modest control loops and protocol buffering, while 8 KB of Flash can hold focused application firmware. Designs requiring substantially larger code images, larger RAM buffers, or more high-speed peripherals should use a higher-density microcontroller.
The primary design consideration is supply and layout planning. The MCU is specified for 10 MHz at 2.7 V and 5 MHz at 1.8 V, so the selected clock must remain valid at the worst-case supply voltage. A compact VQFN layout should also use manufacturer-recommended land patterns, adequate decoupling, clean grounding, and careful treatment of exposed-pad thermal requirements.
This page consolidates the verified manufacturer and distributor information for ATTINY827-MU with practical selection guidance, application analysis, and transparent data-availability notes. It distinguishes confirmed specifications from unavailable parameters rather than inferring missing pin assignments, prices, or detailed peripheral characteristics.
Drop-in alternatives for ATTINY827-MU — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesATTINY827-MU Maximum Ratings & Electrical Characteristics
| Microcontroller Family | tinyAVR 2 series |
| CPU Architecture | 8-bit AVR with hardware multiplier |
| Maximum Clock Frequency | 20 MHz |
| Frequency at 2.7 V Supply | 10 MHz |
| Frequency at 1.8 V Supply | 5 MHz |
| Flash Program Memory | 8 KB |
| Static RAM | 1 KB |
| EEPROM | 128 bytes |
| Package Type | 24-pin VQFN |
| Package Dimensions | 4 x 4 mm |
| Mounting Type | Surface mount |
| Maximum Operating Temperature | 85 °C |
| Green Part | Yes |
ATTINY827-MU 4 x 4 mm Pin Configuration Guide
Pin configuration for ATTINY827-MU (4 x 4 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATTINY827-MU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATTINY827-MU is suitable for 6 applications: Compact Industrial Control Module, Environmental Monitoring Node, LED Lighting Controller, Consumer Product Interface Controller, Battery-Powered Sensor Interface, Embedded Timing and Event Controller.
Compact Industrial Control Module
The ATTINY827-MU is suitable for a compact control module whose main job is to execute focused logic rather than run a graphical operating system. Its 20 MHz AVR CPU provides processing margin for control sequences, and the hardware multiplier can reduce the software cost of suitable multiplication operations. The 8 KB Flash budget is appropriate for focused firmware, while 1 KB SRAM is sufficient for modest variables, stack use, and short communication buffers. In a 24-pin VQFN layout, the 4 x 4 mm device preserves board area for sensors and power circuitry. The design must remain within the verified 10 MHz at 2.7 V and 5 MHz at 1.8 V operating points, or use a permitted frequency from the complete datasheet.
Environmental Monitoring Node
The ATTINY827-MU can form the control core of a small environmental-monitoring node when measurements are sampled, filtered, and acted upon locally. Its 8 KB Flash is useful for retaining a compact acquisition and processing routine, while 1 KB SRAM can support sampled values, timing state, and limited buffering. The 20 MHz maximum clock offers responsiveness for digital sensor interfaces and event-driven acquisition logic. Because the verified snippets do not enumerate ADC or serial-interface resources, the engineer should match those functions to the family datasheet before fixing the architecture. A low-voltage battery implementation should also use the confirmed 5 MHz at 1.8 V operating point or another documented power-and-frequency combination.
LED Lighting Controller
The ATTINY827-MU is a reasonable controller platform for a compact LED-lighting module that requires sequencing, button handling, status indication, and configurable drive timing. The hardware-multiplier-equipped 8-bit AVR core at up to 20 MHz can implement timed effects and control logic without occupying the space of a larger processor. Its 1 KB SRAM is suitable for modest counters and state variables, while 8 KB Flash can hold the production firmware. The 4 x 4 mm 24-pin VQFN helps minimize PCB area in densely packed fixtures. Exact LED timer channels, PWM capability, and I/O assignments are not present in the supplied search excerpts and must be confirmed from the official family documentation.
Consumer Product Interface Controller
The ATTINY827-MU can serve as the dedicated interface controller in a compact consumer product that needs local button handling, state management, and coordination of discrete subsystems. Its 1 KB of SRAM is suitable for product-state variables and short queues, and the 8 KB Flash capacity supports a tightly scoped embedded application rather than a large application framework. The 24-pin VQFN package reduces the footprint requirement when space is constrained. For a design that consumes little power, the verified operation at 5 MHz and 1.8 V is an important starting point. Before assigning external interfaces, engineers should confirm UART, SPI, I2C, timer, and GPIO availability from the complete ATtiny827 datasheet rather than inferring them from the family name.
Battery-Powered Sensor Interface
The ATTINY827-MU is appropriate for a battery-powered sensor interface when the product needs local measurement control and limited data processing. The tinyAVR 2 family's flexible, low-power architecture is relevant to duty-cycled operation, and the confirmed 5 MHz capability at 1.8 V supports low-voltage designs. The 1 KB SRAM can hold active sensor state and small buffers, while 128 bytes of EEPROM is suitable for limited persistent configuration or counters. The compact 4 x 4 mm VQFN also reduces board area. Designers should verify sleep-mode current, wake-up timing, ADC behavior, and peripheral pin availability from the family datasheet because those values are not included in the supplied distributor excerpts.
Embedded Timing and Event Controller
The ATTINY827-MU can be used in a small timing or event-control subsystem where an 8-bit microcontroller must coordinate inputs, decisions, and outputs with predictable response. Its 20 MHz maximum clock and hardware multiplier provide useful arithmetic and control capability for a compact design. The 8 KB Flash footprint favors deterministic, application-specific firmware, and 1 KB SRAM can accommodate counters, state flags, and a limited event queue. The 24-pin VQFN package leaves more PCB space for timing circuits or interface components. Exact timer resolution, event-system features, and interrupt behavior must be selected from the Microchip family documentation, since the supplied snippets only confirm the core, memory, clock, and package configuration.
Engineering reference data for ATTINY827-MU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 24-pin VQFN, 4 x 4 mm |
| Brand | Microchip Technology |
| CPU Architecture | 8-bit AVR with hardware multiplier |
| Maximum Clock Frequency | 20 MHz |
| Flash Memory | 8 KB |
| SRAM | 1 KB |
| EEPROM | 128 bytes |
| Frequency at 1.8 V | 5 MHz |
| Frequency at 2.7 V | 10 MHz |
| Maximum Operating Temperature | 85 °C |
| Environmental Status | Green part |
Key Differentiators
- Combines a 20 MHz AVR core with compact memory in a 4 x 4 mm footprint (vs Higher-density ATtiny microcontrollers)
- Supports low-voltage operation with documented frequency points (vs Higher-voltage general-purpose 8-bit MCUs)
- Hardware multiplier improves suitable multiplication operations (vs Basic AVR devices without a hardware multiplier)
Design Notes
Select the CPU frequency from the complete voltage-versus-frequency table rather than assuming that the 20 MHz maximum applies at every supply voltage. The verified data confirms 10 MHz at 2.7 V and 5 MHz at 1.8 V. At low supply voltages, margin for startup, voltage tolerance, and transient droop can be limited even when the nominal frequency appears supported. Decouple each supply rail close to the device and verify startup behavior across the complete input-voltage range used in production.
Use the exact 24-pin VQFN land pattern and exposed-pad instructions in the Microchip package drawing rather than adapting a generic QFN footprint by inspection. Preserve the required pad, solder-mask, and paste geometry, and follow the manufacturer's reflow profile. Because the supplied excerpts identify the body as 4 x 4 mm but do not provide detailed pad dimensions, those dimensions must not be inferred from the body size. A paste-stencil and assembly-capability review is recommended before committing to the 24-pin VQFN layout.
Do not treat ATTINY827-MU and the base family name ATTINY827 as interchangeable ordering descriptions without checking the orderable suffix. The -MU code identifies the specific 24-pin VQFN configuration and 85 °C-rated listing in the verified distributor data. Likewise, do not assume ATTINY827-MF is a drop-in substitute merely because it is listed by a secondary equivalence source. Confirm package drawing, pinout, temperature grade, memory configuration, and electrical limits against the official Microchip documentation.
Plan the compact board for power-integrity and serviceability at the same time. Place local bypass capacitors and the exposed-pad connection according to the manufacturer layout guidance, keep switching-regulator and high-current paths away from sensitive signal inputs, and provide a stable ground reference. The supplied snippets do not identify the complete GPIO or analog-pin assignment, so final pin assignment should begin with the official 24-pin package diagram rather than a generic VQFN sequence.
Compliance Information
The Mouser result identifies ATTINY827-MU as green, but the supplied data does not explicitly document RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this ordering code. Compliance must be verified on the exact Microchip product and documentation pages.
