2.1.1 Peripheral Summary

Table 2-1. Peripheral Summary
ATtiny3216ATtiny3217
Pins2024
SRAM2 KB 2 KB
Flash32 KB32 KB
EEPROM256B 256B
Max. frequency (MHz)2020
16-bit Timer/Counter type A (TCA)1 1
16-bit Timer/Counter type B (TCB)22
12-bit Timer/Counter type D (TCD)11
Real-Time Counter (RTC)11
USART11
SPI11
TWI (I2C)11
ADC22
ADC channels12+812+12
DAC33
AC33
AC inputs

3p/2n+
4p/1n+
3p/1n

4p/2n+
4p/2n+
4p/2n

Peripheral Touch Controller (PTC)(1)11
PTC number of self-capacitance channels1214
PTC number of mutual capacitance channels3649
Configurable Custom Logic11
Window Watchdog11
Event System channels66
General purpose I/O1822
External interrupts1822
CRCSCAN11
Note:
  1. The PTC takes control over the ADC0 while the PTC is used.