Electronic Components Datasheet Search |
|
AN1447 Datasheet(PDF) 3 Page - STMicroelectronics |
|
AN1447 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 26 page 3/26 4-MULTIPLEXED LCD WITH A STANDARD ST62 Figure 2. Connections inside a direct drive LCD All these pins are connected to MCU I/O pins operating in output mode, either at logic level 0 or at logic level 1. The backplane is driven with a signal COM controlled between 0 and VDD with a duty cycle of 50%. When selecting a segment ON, a signal with opposite polarity to COM is sent to the corre- sponding segment electrode pin. When the non-inverted signal COM is sent to the segment electrode pin, the segment is OFF. Figure 3. LCD signals for non-multiplexed drive Note: on Figure 3, S signal is the “segment electrode voltage” and S∆ the “segment voltage”. S1 COM backplane S0 segment electrodes … t t t COM S S∆ = COM - S Vdd 0 Vdd 0 Vdd 0 -Vdd ( S∆)RMS = 0 ⇒ segment OFF ( S∆)RMS = Vdd ⇒ segment ON S∆ |
Similar Part No. - AN1447 |
|
Similar Description - AN1447 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |