ATTINY40-MMHR 8-bit AVR microcontroller with 4KB Flash, 256B SRAM, 12 MHz max speed, 18 I/O, and 10-bit ADC. Surface-mount 20-VQFN package.
Mfr Part #:

ATTINY40-MMHR

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
8-bit AVR microcontroller with 4KB Flash, 256B SRAM, 12 MHz max speed, 18 I/O, and 10-bit ADC. Surface-mount 20-VQFN package.
✓ Total Stock: 5,040 pcs

ATTINY40-MMHR Available from 1 distributor

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ATTINY40-MMHR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Peripherals
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Voltage
Watchdog Timer

ATTINY40-MMHR Description

Short technical summary and product information.

The ATTINY40-MMHR is a high-performance, low-power 8-bit AVR microcontroller from Microchip Technology's ATtiny series. It features 4KB of in-system programmable Flash memory and 256 bytes of internal SRAM, providing ample storage for small to medium embedded applications.

 

Operating at speeds up to 12 MHz (at 4.5-5.5V), the device delivers up to 12 MIPS throughput. It supports a wide supply voltage range of 1.8V to 5.5V and includes a rich set of peripherals such as an 8-bit timer/counter with two PWM channels, a 10-bit ADC with 12 channels, an on-chip analog comparator, and a programmable watchdog timer with separate oscillator.

 

With 18 programmable I/O lines and connectivity options including I²C and SPI, this microcontroller is well-suited for space-constrained designs requiring low power consumption. Typical active mode current is 200 µA at 1 MHz, with power-down mode current below 0.1 µA.

 

The device is offered in a compact 20-VFQFN exposed pad package (20-VQFN 3x3 mm) for surface mount assembly, suitable for industrial temperature ranges from -40°C to 85°C.

ATTINY40-MMHR Quick Information

Product Type: Microcontroller
Series: ATtiny
Canonical Name: ATtiny40 8-bit AVR Microcontroller with 4KB Flash
Subcategory: Embedded Microcontrollers

ATTINY40-MMHR Compliance

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

ATTINY40-MMHR Features

  • 4KB in-system programmable Flash memory.
  • 256 bytes internal SRAM for data storage.
  • Up to 12 MIPS throughput at 12 MHz.
  • 18 programmable I/O lines with I²C/SPI.
  • Low power: 200 µA active at 1 MHz.

ATTINY40-MMHR Applications

  • Suitable for battery-powered portable devices.
  • Used in sensor interface and control modules.
  • Ideal for small embedded IoT nodes.
  • Applied in motor control with PWM outputs.

ATTINY40-MMHR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATTINY40-MMHR?

The supply voltage range is 1.8V to 5.5V.

What is the package type for the ATTINY40-MMHR?

It is offered in a 20-VFQFN Exposed Pad package (20-VQFN 3x3 mm) for surface mount.

What is the operating temperature range of this microcontroller?

The operating temperature range is -40°C to 85°C.

Is the ATTINY40-MMHR RoHS compliant?

RoHS status is reported as RoHS3 compliant (unverified).

How much program memory does the ATTINY40-MMHR have?

It has 4KB of in-system programmable Flash memory.

What is the maximum clock speed of the ATTINY40-MMHR?

Maximum 12 MHz at 4.5V-5.5V, 8 MHz at 2.7V-5.5V, 4 MHz at 1.8V-5.5V.

What communication interfaces are available?

The microcontroller supports I²C and SPI interfaces.

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