2 Pinout Changes
In variant B of the SAM L21 there has been changes done in the 32- and 48-pin packages relating to the number and placement of the Peripheral Touch Controller (PTC) Y lines. The 32-pin packages have a reduced number of Y lines from 10 down to 7, and the 48-pin package has been reduced from 12 to 10 Y lines. In addition the Y2, Y3, and Y14 has been moved on all packages. In addition OPAMP pins OA_OUT[1] and OA_NEG[2] has swapped position.
PTC Y Line | Variant A pin | Variant B pin | SAML21E (32-pin) | SAML21G (48-pin) | SAML21J (64-pin) |
---|---|---|---|---|---|
Y[0] | PA02 | PA02 | |||
Y[1] | PA03 | PA03 | |||
Y[2] | PA04 | PB10 | removed | ||
Y[3] | PA05 | PB11 | removed | ||
Y[4] | PA06 | PA06 | |||
Y[5] | PA07 | PB12 | removed | removed | |
Y[6] | PA08 | PA08 | |||
Y[7] | PA09 | PA09 | |||
Y[8] | PA10 | PA10 | |||
Y[9] | PA11 | PA11 | |||
Y[10] | PB04 | PB04 | |||
Y[11] | PB05 | PB05 | |||
Y[12] | PB06 | PB06 | |||
Y[13] | PB07 | PB07 | |||
Y[14] | PB08 | PB13 | removed | ||
Y[15] | PB09 | PB09 |
Bold pins in the variant B column have changed positions from variant A to variant B. Pins marked as removed were available in variant A but are no longer available in variant B.
PIN | Variant A OPAMP pinout | Variant B OPAMP pinout |
---|---|---|
PB06 |
OA_NEG[2] |
OA_OUT[1] |
PB08 |
OA_OUT[1] |
OA_NEG[2] |