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4 alternative usi usage, 1 half-duplex asynchronous data transfer, 2 4-bit counter – Rainbow Electronics ATtiny43U User Manual

Page 107: 3 12-bit timer/counter, 4 edge triggered external interrupt, 5 software interrupt, 5 register descriptions, 1 usicr – usi control register

4 alternative usi usage, 1 half-duplex asynchronous data transfer, 2 4-bit counter | 3 12-bit timer/counter, 4 edge triggered external interrupt, 5 software interrupt, 5 register descriptions, 1 usicr – usi control register | Rainbow Electronics ATtiny43U User Manual | Page 107 / 182 4 alternative usi usage, 1 half-duplex asynchronous data transfer, 2 4-bit counter | 3 12-bit timer/counter, 4 edge triggered external interrupt, 5 software interrupt, 5 register descriptions, 1 usicr – usi control register | Rainbow Electronics ATtiny43U User Manual | Page 107 / 182