Peripheral Summary

Table 1. Peripheral Summary
  ATtiny406
Pins 20
SRAM 256B
Flash 4 KB
EEPROM 128B
Max. frequency (MHz) 20
16-bit Timer/Counter type A (TCA) 1
16-bit Timer/Counter type B (TCB) 1
12-bit Timer/Counter type D (TCD) No
Real-Time Counter (RTC) 1
USART 1
SPI 1
TWI (I2C) 1
ADC 1
ADC channels 12
DAC No
AC 1
AC inputs 2p/2n
Peripheral Touch Controller (PTC) No
Configurable Custom Logic 1
Window Watchdog 1
Event System channels 3
General purpose I/O 18
External interrupts 18
CRCSCAN 1