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

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

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

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Electrical characteristicsSTM<strong>32</strong>L162VD, STM<strong>32</strong>L162ZD, STM<strong>32</strong>L162QD, STM<strong>32</strong>L162RD6.3.3 Embedded internal reference voltageThe parameters given in Table 13 are <strong>based</strong> on characterization results, unless otherwisespecified.Table 13.Embedded internal reference voltageSymbol Parameter Conditions Min Typ Max Unit(1)V REFINT out Internal reference voltage – 40 °C < T J < +105 °C 1.202 1.224 1.242 VI REFINTInternal reference currentconsumption1.4 2.3 µAT VREFINT Internal reference startup time 2 3 msV VREF_MEASV DDA and V REF+ voltage duringV REFINT factory measure2.99 3 3.01 VA VREF_MEAST Coeff(3)A Coeff(3)Accuracy of factory-measuredV REF value (2)Temperature coefficientIncluding uncertaintiesdue to ADC andV DDA /V REF+ values–40 °C < T J < +105 °C 20 500 °C < T J < +50 °C 20±5 mVppm/°CLong-term stability 1000 hours, T= 25 °C 1000 ppmVDDCoeff (3) Voltage coefficient 3.0 V < V DDA < 3.6 V 2000 ppm/VT S_vrefint(3)(4)T ADC_BUF(3)I BUF_ADC(3)ADC sampling time whenreading the internal referencevoltageStartup time of reference voltagebuffer for ADCConsumption of referencevoltage buffer for ADC5 10 µs10 µs13.5 25 µA(3)I VREF_OUT VREF_OUT output current (5) 1 µA(3)C VREF_OUT VREF_OUT output load 50 pFI LPBUF(3)V REFINT_DIV1(3)V REFINT_DIV2(3)Consumption of referencevoltage buffer for VREF_OUTand COMP730 1200 nA1/4 reference voltage 24 25 261/2 reference voltage 49 50 51V REFINT_DIV3(3) 3/4 reference voltage 74 75 761. Tested in production;2. The internal V REF value is individually measured in production and stored in dedicated EEPROM bytes.3. Guaranteed by design, not tested in production.4. Shortest sampling time can be determined in the application by multiple iterations.5. To guarantee less than 1% VREF_OUT deviation.%V REFINT54/124 Doc ID 022268 Rev 2

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