48.22 UART Electrical Specifications

Table 48-32. UART AC Electrical Specifications (1)
AC CHARACTERISTICSStandard Operating Conditions: VDDIO = AVDD 1.75V to 3.63V, VDDREG = 1.75V to 1.85V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMin.TypicalMax.UnitsConditions
UT_1FBRATEBaud RateAsynchronous SAMPR = 16x mode——10MbpsVDDIO = 3.3V,

CLOAD = 30 pF(max)

——10MbpsVDDIO = 1.8V,

CLOAD = 30 pF(max)

UT_3Asynchronous SAMPR = 8x mode——10MbpsVDDIO = 3.3V,

CLOAD = 30 pF(max)

——10MbpsVDDIO = 1.8V,

CLOAD = 30 pF(max)

UT_5Asynchronous SAMPR = 3x mode——10MbpsVDDIO = 3.3V,

CLOAD = 30 pF(max)

——10MbpsVDDIO = 1.8V,

CLOAD = 30 pF(max)

UT_19Synchronous mode X2 mode——25MbpsVDDIO = 3.3V,

CLOAD = 30 pF(max)

——24MbpsVDDIO = 1.8V,

CLOAD = 30 pF(max)

UT_21Synchronous mode X1 mode——25MbpsVDDIO = 3.3V,

CLOAD = 30 pF(max)

——24MbpsVDDIO = 1.8V,

CLOAD = 30 pF(max)

UT_23FUSARTUSART maximum GCLK_SERCOM——160MHz —
UT_25FXCKUSART External Clock Input——25MHz —
Note:
  1. These parameters are characterized, but not tested in manufacturing.