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ATTINY261A-MU 8-bit AVR microcontroller by Microchip with 2KB Flash memory, 128B RAM, and 128B EEPROM. Operates at up to 20MHz with supply voltage 1.8V to 5.5V.
Mfr Part #:

ATTINY261A-MU

Available from 2 distributors
Mfr Name: Microchip Technology
Microchip Technology
8-bit AVR microcontroller by Microchip with 2KB Flash memory, 128B RAM, and 128B EEPROM. Operates at up to 20MHz with supply voltage 1.8V to 5.5V.
Total Stock: 1,323 pcs

ATTINY261A-MU Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,321 pcs
1321 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
2 pcs
2 pcs On Request 1 On Request On Request On Request On Request On Request

ATTINY261A-MU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Active Supply Current
Connectivity
Core Processor
Core Size
Data Converters
Data Retention
EEPROM Endurance
EEPROM Size
Flash Endurance
Maximum Clock Frequency (Maximum @ Vcc = 1.8 V -5.5 V)
Maximum Clock Frequency (Maximum @ Vcc = 2.7 V -5.5 V)
Maximum Clock Frequency (Maximum @ Vcc = 4.5 V -5.5 V)
Mounting Type
Number of ADC Channels (Nominal @ Differential with Programmable Gain (1 x, 8 x, 20 x, 32 x)
Number of ADC Channels (Nominal @ Differential)
Number of ADC Channels (Nominal @ Single-Ended)
Number of I
On-Chip Temperature Sensor
On-chip Analog Comparator
Operating Temperature
Oscillator Type
PWM Outputs
Peripherals
Program Memory Size
Program Memory Type
Programmable Dead Time Generator
RAM Size
Speed
Standby Current
Supplier Device Package
Timer/Counter
Voltage
debugWIRE

ATTINY261A-MU Description

Short technical summary and product information.

Microchip Technology ATtiny261A-MU is an 8-bit AVR microcontroller featuring high performance and low power consumption. It offers 2KB of in-system self-programmable Flash memory, 128B of SRAM, and 128B of EEPROM with high endurance (10,000 write/erase cycles for Flash, 100,000 for EEPROM). The device operates at clock speeds up to 20MHz at 4.5V–5.5V, and supports lower speeds at reduced voltages. It is housed in a 32-lead VFQFN exposed pad package (32-VQFN 5x5mm) for surface mount assembly.

 

The microcontroller includes a rich set of peripherals: a 10-bit ADC with 11 single-ended channels, 16 differential pairs (15 with programmable gain), an on-chip analog comparator, and two timer/counters with PWM outputs. It supports USI for serial communication and features a debugWIRE interface for on-chip debugging. Additional features include brown-out detection, power-on reset, a watchdog timer, and an internal temperature sensor.

 

With an operating temperature range of –40°C to +85°C and supply voltage from 1.8V to 5.5V, the ATtiny261A-MU is suitable for a wide range of embedded applications. Its low power consumption (200 µA active at 1MHz, 1.8V; 0.1 µA in power-down mode) makes it ideal for battery-powered and power-sensitive designs.

ATTINY261A-MU Quick Information

Product Type: Microcontroller
Series: ATtiny261A
Canonical Name: Microchip ATtiny261A-MU 8-bit AVR Microcontroller
Subcategory: 8-bit Microcontrollers

ATTINY261A-MU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ATTINY261A-MU Features

  • 8-bit AVR core with up to 20MHz operation.
  • 2KB Flash, 128B SRAM, 128B EEPROM onboard.
  • 10-bit ADC with 11 single-ended channels.
  • Includes debugWIRE for on-chip debugging.
  • Low power: 200 µA active at 1MHz.

ATTINY261A-MU Applications

  • Used in sensor signal conditioning circuits.
  • Ideal for battery-powered portable devices.
  • Suitable for motor control with PWM outputs.
  • Used in lighting control applications.
  • Ideal for simple embedded control systems.

ATTINY261A-MU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

1.8V to 5.5V.

What package is the ATTINY261A-MU available in?

32-lead VFQFN Exposed Pad, also designated as 32-VQFN (5x5mm).

What is the operating temperature range?

-40°C to +85°C.

Is the ATTINY261A-MU RoHS compliant?

Yes, it is marked as RoHS3 compliant (unverified).

What are the memory sizes of the ATTINY261A-MU?

2KB Flash, 128B SRAM, 128B EEPROM.

What is the maximum clock frequency?

Up to 20MHz at 4.5V-5.5V; lower speeds at lower voltages.

How many ADC channels does the ATTINY261A-MU have?

11 single-ended channels, 16 differential pairs, and 15 differential pairs with programmable gain.

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