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Product attributes Property Value
Manufacturer Microchip Technology
Product Series tinyAVR™ 0, Functional Safety (FuSa)
Packaging Tube |
Core Processor AVR
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 12
Program Memory Size 4KB (4K x 8)
Program Memory Type FLASH
EEPROM Size 128 x 8
RAM Size 256 x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V
Data Converters A/D 10x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 14-SOIC
Package / Case 14-SOIC (0.154", 3.90mm Width)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATTINY404-SSF is an 8-bit AVR microcontroller from Microchip in a 14-SOIC package. It operates from 2.7V to 5.5V at 16MHz, with 4KB program memory and 256B RAM. Integrated BOR, POR, PWM, and WDT make it a robust choice for mid-range embedded control.

  • 4KB flash allows more complex firmware than smaller AVRs.
  • 256B RAM supports larger data buffers.
  • Extended temperature range (-40 to 125°C) for harsh environments.
  • Integrated PWM reduces external timing components.

Multi-Channel LED Controllers

4KB flash and PWM support RGB or multiple indicator patterns.

Environmental Monitoring Nodes

256B RAM buffers temperature/humidity readings for periodic transmission.

Small Pump Controllers

16MHz AVR core with PWM drives small DC pumps efficiently.

Automotive Accessory Modules

125°C rating and BOR ensure reliable operation under hood.

Smart Lighting Drivers

5.5V tolerance and PWM enable direct interfacing with LED drivers.

Industrial Counters

WDT and POR maintain accurate counting in noisy environments.

Q: What is the voltage range?
A: 2.7V to 5.5V.
Q: What is the max speed?
A: 16MHz.
Q: What is the package?
A: 14-SOIC.
Q: Does it have PWM?
A: Yes, with BOR, POR, and WDT.
Base Product Number : ATTINY404
16MHz 256B RAM 4KB flash 8-bit core 8-bit MCU automotive AVR BOR industrial PWM SOIC-14 WDT
Q: What is the voltage range?
A: 2.7V to 5.5V.
Q: What is the max speed?
A: 16MHz.
Q: What is the package?
A: 14-SOIC.
Q: Does it have PWM?
A: Yes, with BOR, POR, and WDT.