The following tables highlight SERCOM features differences with respect
to the Pinout Multiplexing.
Table 1. SAM D21 Pinout Multiplexing
Comparison (Peripheral Function C and D)
| Peripheral
Functions |
C (SERCOM) |
D (SERCOM ALT) |
| Pin# |
SAM L10/L11 |
SAM D21 |
SAM L10/L11 |
SAM D21 |
SAM L10/L11 |
SAM D21 |
| 1 |
PA00/Xin32 |
PA00/Xin32 |
- |
- |
SERCOM0/PAD[2] |
SERCOM1/PAD[0] |
| 2 |
PA01/XOUT32 |
PA01/XOUT32 |
- |
- |
SERCOM0/PAD[3] |
SERCOM1/PAD[1] |
| 5 |
PA04 |
PA04 |
- |
- |
- |
SERCOM0/PAD[0] |
| 6 |
PA05 |
PA05 |
- |
- |
- |
SERCOM0/PAD[1] |
| 7 |
PA06 |
PA06 |
- |
- |
- |
SERCOM0/PAD[2] |
| 8 |
PA07 |
PA07 |
- |
- |
- |
SERCOM0/PAD[3] |
| 11 |
PA08 |
PA08 |
SERCOM1/PAD[0] |
SERCOM0/PAD[0] |
SERCOM2/PAD[0] |
SERCOM2/PAD[0] |
| 12 |
PA09 |
PA09 |
SERCOM1/PAD[1] |
SERCOM0/PAD[1] |
SERCOM2/PAD[1] |
SERCOM2/PAD[1] |
| 13 |
PA10 |
PA10 |
SERCOM1/PAD[2] |
SERCOM0/PAD[2] |
SERCOM2/PAD[2] |
SERCOM2/PAD[2] |
| 14 |
PA11 |
PA11 |
SERCOM1/PAD[3] |
SERCOM0/PAD[3] |
SERCOM2/PAD[3] |
SERCOM2/PAD[3] |
| 15 |
PA14/XIN |
PA14/XIN |
SERCOM2/PAD[2] |
SERCOM2/PAD[2] |
SERCOM0/PAD[2] |
SERCOM4/PAD[2] |
| 16 |
PA15/XOUT |
PA15/XOUT |
SERCOM2/PAD[3] |
SERCOM2/PAD[3] |
SERCOM0/PAD[3] |
SERCOM4/PAD[3] |
| 17 |
PA16 |
PA16 |
SERCOM1/PAD[0] |
SERCOM1/PAD[0] |
SERCOM0/PAD[0] |
SERCOM3/PAD[0] |
| 18 |
PA17 |
PA17 |
SERCOM1/PAD[1] |
SERCOM1/PAD[1] |
SERCOM0/PAD[1] |
SERCOM3/PAD[1] |
| 19 |
PA18 |
PA18 |
SERCOM1/PAD[2] |
SERCOM1/PAD[2] |
SERCOM0/PAD[2] |
SERCOM3/PAD[2] |
| 20 |
PA19 |
PA19 |
SERCOM1/PAD[3] |
SERCOM1/PAD[3] |
SERCOM0/PAD[3] |
SERCOM3/PAD[3] |
| 21 |
PA22 |
PA22 |
SERCOM0/PAD[0] |
SERCOM3/PAD[0] |
SERCOM2/PAD[0] |
SERCOM5/PAD[0] |
| 22 |
PA23 |
PA23 |
SERCOM0/PAD[1] |
SERCOM3/PAD[1] |
SERCOM2/PAD[1] |
SERCOM5/PAD[1] |
| 23 |
PA24 |
PA24 |
SERCOM0/PAD[2] |
SERCOM3/PAD[2] |
SERCOM2/PAD[2] |
SERCOM5/PAD[2] |
| 24 |
PA25 |
PA25 |
SERCOM0/PAD[3] |
SERCOM3/PAD[3] |
SERCOM2/PAD[3] |
SERCOM5/PAD[3] |
| 31 |
PA30 |
PA30 |
- |
- |
SERCOM1/PAD[2] |
SERCOM1/PAD[2] |
| 32 |
PA31 |
PA31 |
- |
- |
SERCOM1/PAD[3] |
SERCOM1/PAD[3] |
Table 2. SERCOM Features Comparison with SAM D21 (Peripheral Function C)
| Pin
Name |
PA08, PA09 |
PA10,
PA11 |
PA16,
PA17 |
PA18, PA19 |
PA22, PA23 |
PA24, PA25 |
| Features / SERCOM Instances |
SAM L10/L11 SERCOM1 |
SAM D21 SERCOM0 |
SAM L10/L11 SERCOM1 |
SAM D21 SERCOM0 |
SAM
L10/L11 - SAM D21 SERCOM1 |
SAM
L10/L11 - SAM D21 SERCOM1 |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM3 |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM3 |
| I2C |
Full Speed |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
Yes |
Yes |
No |
No |
| Fast Mode Plus |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
Yes |
Yes |
No |
No |
| High Speed |
No |
Yes |
No |
No |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
| USART |
Auto-baud mode |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
| LIN Client |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
Table 3. SERCOM Features Comparison with SAM D21 (Peripheral Function D)
| Pin
Name |
PA00,
PA01 |
PA04,
PA05, PA06, PA07 |
PA08,
PA09 |
PA14, PA15 |
PA16, PA17 |
PA18, PA19 |
PA22, PA23 |
PA30, PA31 |
| Features / SERCOM Instances |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM1 |
SAM
L10/L11 - SAM D21 SERCOM0 |
SAM
L10/L11 - SAM D21 SERCOM2 |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM4 |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM3 |
SAM L10/L11 SERCOM0 |
SAM D21 SERCOM3 |
SAM L10/L11 SERCOM2 |
SAM D21 SERCOM5 |
SAM L10/L11 SERCOM1 |
SAM D21 SERCOM5 |
| I2C |
Full Speed |
No |
No |
No |
No |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
No |
Yes |
No |
No |
| Fast Mode Plus |
No |
No |
No |
No |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
No |
Yes |
No |
No |
| High Speed |
No |
No |
No |
No |
No |
Yes |
No |
No |
Yes |
Yes |
No |
No |
No |
Yes |
No |
No |
| USART |
Auto-baud mode |
No |
Yes |
No |
Yes |
Yes |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
Yes |
Yes |
No |
Yes |
| LIN Client |
No |
Yes |
No |
Yes |
Yes |
Yes |
No |
Yes |
No |
Yes |
No |
Yes |
Yes |
Yes |
No |
Yes |