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Microchip Technology AVR32DD28T-I/SS — Signal Isolation
Microchip Technology

Microchip AVR32DD28T-I/SS 8-bit MCU, 24 MHz, 32 KB Flash

MPNAVR32DD28T-I/SS
End of Life

Microchip AVR® DD series AVR32DD28T-I/SS, 8-bit AVR MCU, 24 MHz, 32 KB Flash, 4K x 8 RAM, 256 x 8 EEPROM, 28-SSOP, -40°C to 85°C.

$1.38Ref. price · indicative, final on quote
AVR32DD28T-I/SS datasheet
Packaging28-SSOP (0.209", 5.30mm Width)
StockContact for availability
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Specifications

AVR32DD28T-I/SS Technical Specifications
ParameterValue
SeriesAVR® DD
Mounting typeSurface Mount
Oscillator typeExternal, Internal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed24MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size4K x 8
Core size8-Bit
EEPROM size256 x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, RS-485, SPI, UART/USART
Number of i (O)22
Core processorAVR
Case28-SSOP (0.209\", 5.30mm Width)
Data convertersA/D 19x12b SAR; D/A 1x10b
Program memory size32KB (32K x 8)

Product details

24 MHz AVR core with 32 KB Flash — what fits in the memory map

The Microchip AVR32DD28T-I/SS is an 8-bit AVR microcontroller from the AVR® DD family, built around a single-cycle I/O core clocked at 24 MHz.

19-channel 12-bit ADC and a 10-bit DAC — analog headroom without an external converter

The integrated data converters are the standout feature for an 8-bit MCU in this footprint: a 19-channel 12-bit SAR ADC and a single 10-bit DAC. That many ADC channels, combined with the 12-bit resolution, means a multi-sensor board (thermistors, potentiometers, current shunts) can skip an external multiplexer or a separate ADC IC. The DAC can generate an analog setpoint or a bias voltage, saving a PWM-plus-filter stage.

Connectivity and peripherals for industrial and LIN-bus nodes

IrDA and RS-485 support are also listed, though those typically need an external transceiver.

Frequently asked questions

What is the closest functional equivalent to AVR32DD28T-I/SS?

The closest peer in the Microchip portfolio is the ATTINY3224-XUR from the tinyAVR 2 series. It runs at 20 MHz (versus 24 MHz), has 12 I/Os instead of 22, and carries a 9-channel 12-bit ADC versus the 19-channel ADC here. The AVR32DD28T-I/SS offers more I/O, higher ADC channel count, and a DAC — so it fits designs that need those extra analog and GPIO resources.

Can AVR32DD28T-I/SS be used with Arduino IDE?

The AVR® DD series is supported in Microchip Studio and the MPLAB X IDE ecosystem. Arduino IDE support depends on third-party board packages; as of the current release cycle, the AVR DD family is not natively listed in the official Arduino board manager. Check the Microchip GitHub repositories for community core packages.