Supplied in 3 x 3 QFN package and respectively featuring 4 and 8 KB of Flash memory, ATtiny441 and ATtiny841 are 14-pin devices with diverse analog and communication capabilities. Along with ADC featuring calibrated multilevel internal analog reference, features include 12 ADC channels, two independent USARTs with wake-up from power down without data loss, SPI interface, and I²C slave interface. Flexible clocking options include ±2% internal oscillator.
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