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

STM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RDElectrical characteristics6.3.22 LCD controllerThe STM32L162xD embeds a built-in step-up converter to provide a constant LCDreference voltage independently from the V DD voltage. An external capacitor C ext must beconnected to the V LCD pin to decouple this converter.Table 67.LCD controller characteristicsSymbol Parameter Min Typ Max UnitV LCD LCD external voltage 3.6V LCD0 LCD internal reference voltage 0 2.6V LCD1 LCD internal reference voltage 1 2.73V LCD2 LCD internal reference voltage 2 2.86V LCD3 LCD internal reference voltage 3 2.98V LCD4 LCD internal reference voltage 4 3.12V LCD5 LCD internal reference voltage 5 3.26V LCD6 LCD internal reference voltage 6 3.4V LCD7 LCD internal reference voltage 7 3.55C ext V LCD external capacitance 0.1 2 µFI LCD(1)R Htot(2)Supply current at V DD = 2.2 V 3.3Supply current at V DD = 3.0 V 3.1Low drive resistive network overall value 5.28 6.6 7.92 MΩR L(2) High drive resistive network total value 192 240 288 kΩV 44 Segment/Common highest level voltage V LCD VVµAVV 23 Segment/Common 2/3 level voltage 2/3 V LCDV 12 Segment/Common 1/2 level voltage 1/2 V LCDV 13 Segment/Common 1/3 level voltage 1/3 V LCDV 34 Segment/Common 3/4 level voltage 3/4 V LCDV 14 Segment/Common 1/4 level voltage 1/4 V LCDV 0 Segment/Common lowest level voltage 0ΔVxx (3)Segment/Common level voltage errorT A = -40 to 85 ° C± 50 mV1. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio= 64, all pixels active, no LCDconnected2. Guaranteed by design, not tested in production.3. Based on characterization, not tested in production.Doc ID 022268 Rev 2 113/124