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

STM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RDElectrical characteristicsFigure 23.I/O AC characteristics definitionExternalOutputon 50pF90%50%10%t r(IO)out10%50%90%Tt r(IO)outMaximum frequency is achieved if (t r + t f ) 2/3)T and if the duty cycle is (45-55%)when loaded by 50 pFai141316.3.14 NRST pin characteristicsThe NRST pin input driver uses CMOS technology.Unless otherwise specified, the parameters given in Table 50 are derived from testsperformed under ambient temperature and V DD supply voltage conditions summarized inTable 10.Table 50.NRST pin characteristicsSymbol Parameter Conditions Min Typ Max UnitV IL(NRST)(1)V IH(NRST)(1)NRST input low level voltage V SS 0.8NRST input high level voltage 1.4 V DDV OL(NRST)(1)NRST output low levelvoltageI OL = 2 mA2.7 V < V DD < 3.6 VI OL = 1.5 mA1.65 V < V DD < 2.7 V0.4VV hys(NRST)(1)NRST Schmitt trigger voltagehysteresis10%V DD(2)mVR PUV F(NRST)(1)Weak pull-up equivalentresistor (3)V IN = V SS 30 45 60 kΩNRST input filtered pulse 50 nsV NF(NRST)(1) NRST input not filtered pulse 350 ns1. Guaranteed by design, not tested in production.2. 200 mV minimum value3. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution tothe series resistance is around 10%.Doc ID 022268 Rev 2 93/124