2 Peripheral Overview
The following table shows the peripheral overview of the entire AVR® DB family, but the further documentation describes only the AVR32DB28/32/48 devices.
| Feature |
AVR32DB28 |
AVR32DB32 |
AVR32DB48 |
AVR64DB64 |
|---|---|---|---|---|
| Pins | 28 | 32 | 48 | 64 |
| Max. frequency (MHz) | 24 | 24 | 24 | 24 |
| 16-bit Timer/Counter type A (TCA) | 1 | 1 | 2 | 2 |
| 16-bit Timer/Counter type B (TCB) | 3 | 3 | 4 | 5 |
| 12-bit Timer/Counter type D (TCD) | 1 | 1 | 1 | 1 |
| Real-Time Counter (RTC) | 1 | 1 | 1 | 1 |
| USART | 3 | 3 | 5 | 6 |
| SPI | 2 | 2 | 2 | 2 |
| TWI/I2C | 1(1) | 2(1) | 2(1) | 2(1) |
| 12-bit differential ADC (channels) | 1 (9) | 1 (13) | 1 (18) | 1 (22) |
| 10-bit DAC (outputs) | 1 (1) | 1 (1) | 1 (1) | 1 (1) |
| Analog Comparator (AC) | 3 | 3 | 3 | 3 |
| Zero-Cross Detector (ZCD) | 1 | 1 | 2 | 3 |
| Peripheral Touch Controller (PTC) | - | - | - | - |
| Op amp (OP) | 2 | 2 | 3 | 3 |
| Configurable Custom Logic Look-up Table (CCL LUT) | 4 | 4 | 6 | 6 |
| Watchdog Timer (WDT) | 1 | 1 | 1 | 1 |
| Event System channels (EVSYS) | 8 | 8 | 10 | 10 |
| General Purpose I/O(2) | 22/21(2) | 26/25(2) | 41/40(2) | 55/54(2) |
| PORT | PA[7:0], PC[3:0], PD[7:1], PF[6,1,0] | PA[7:0], PC[3:0], PD[7:1], PF[6:0] | PA[7:0], PB[5:0], PC[7:0], PD[7:0], PE[3:0], PF[6:0] | PA[7:0], PB[7:0], PC[7:0], PD[7:0], PE[7:0], PF[6:0], PG[7:0] |
| External Interrupts | 22 | 26 | 41 | 55 |
| CRCSCAN | 1 | 1 | 1 | 1 |
| Unified Program and Debug Interface (UPDI) | 1 | 1 | 1 | 1 |
Note:
- The TWI/I2C can operate simultaneously as host and client on different pins.
- PF6/RESET pin is input only.