Skip to main content
Microchip Technology ATTINY3224-XUR — Signal Isolation
Microchip Technology

ATTINY3224-XUR 8-bit AVR MCU, 20 MHz, 32 KB Flash, 14-TSSOP

MPNATTINY3224-XUR
End of Life

Microchip tinyAVR® 2 ATTINY3224-XUR, 8-bit AVR MCU, 20 MHz, 32 KB Flash, 3 KB SRAM, 256 B EEPROM, 9x12-bit ADC, 1.8 V to 5.5 V, -40°C to 85°C, 14-TSSOP.

$1.05Ref. price · indicative, final on quote
ATTINY3224-XUR datasheet
Packaging14-TSSOP (0.173", 4.40mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

ATTINY3224-XUR Technical Specifications
ParameterValue
SeriestinyAVR® 2
Mounting typeSurface Mount
Oscillator typeExternal, Internal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed20MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size3K x 8
Core size8-Bit
EEPROM size256 x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART
Number of i (O)12
Core processorAVR
Case14-TSSOP (0.173\", 4.40mm Width)
Data convertersA/D 9x12b
Program memory size32KB (32K x 8)

Product details

What this 8-bit MCU brings to a small-footprint design

The Microchip ATTINY3224-XUR is an 8-bit AVR microcontroller from the tinyAVR® 2 family, built around the AVR core with a 20 MHz clock.

Supply voltage and I/O — fitting into a 12-pin budget

Plan the pin multiplexing early in the schematic.

Memory sizing for a firmware-update strategy

The Flash is enough for a bootloader plus application code if you keep the application under about 28 KB; the remaining space can hold a small OTA staging buffer if you use external Flash. The 256-byte EEPROM is useful for calibration constants or fault logs that survive a firmware update. If your design needs over-the-air updates with a full-image backup, consider stepping up to a 64 KB Flash variant in the same tinyAVR 2 family.

Frequently asked questions

How many I/O pins does ATTINY3224-XUR have?

It provides 12 general-purpose I/O pins in the 14-pin package. Nine of these can be used as analog inputs through the 12-bit ADC.

When sourcing ATTINY3224-XUR, what's the closest functional second-source — AVR32DD28T-I/SS?

The AVR32DD28T-I/SS is a Microchip AVR DD-series 8-bit MCU with a similar core (AVR, 8-bit) and 32 KB Flash, but it runs at 24 MHz, offers 22 I/O, and includes LINbus and RS-485 interfaces. It is not pin-compatible (28-pin SSOP vs 14-pin TSSOP) and is a different peripheral set, so it is a functional alternative only if the board can accommodate the larger footprint and extra I/O.