Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

Electrical characteristicsSTM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RDLow-speed external user clock generated from an external sourceThe characteristics given in the following table result from tests performed using a lowspeedexternal clock source, and under ambient temperature and supply voltage conditionssummarized in Table 10.Table 24. Low-speed external user clock characteristics (1)Symbol Parameter Conditions Min Typ Max Unitf LSE_extV LSEHV LSELUser external clock sourcefrequencyOSC32_IN input pin high levelvoltageOSC32_IN input pin low levelvoltage1 32.768 1000 kHz0.7V DD V DDVV SS0.3V DDt w(LSE)t w(LSE)OSC32_IN high or low time TBDt r(LSE) OSC32_IN rise or fall time TBDt f(LSE)C IN(LSE) OSC32_IN input capacitance 0.6 pFDuCy (LSE) Duty cycle TBD TBD %I L OSC32_IN Input leakage current V SS ≤V IN ≤V DD ±1 µA1. Guaranteed by design, not tested in productionnsFigure 11.Low-speed external clock source AC timing diagram 66/124 Doc ID 022268 Rev 2