Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

Preview PDF HTML

UPD7225 Datasheet(PDF) 21 Page - Renesas Technology Corp

Part # UPD7225
Description  MOS INTEGRATED CIRCUIT
PDF  50 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD7225 Datasheet(HTML) 21 Page - Renesas Technology Corp

Back Button UPD7225 Datasheet HTML 17Page - Renesas Technology Corp UPD7225 Datasheet HTML 18Page - Renesas Technology Corp UPD7225 Datasheet HTML 19Page - Renesas Technology Corp UPD7225 Datasheet HTML 20Page - Renesas Technology Corp UPD7225 Datasheet HTML 21Page - Renesas Technology Corp UPD7225 Datasheet HTML 22Page - Renesas Technology Corp UPD7225 Datasheet HTML 23Page - Renesas Technology Corp UPD7225 Datasheet HTML 24Page - Renesas Technology Corp UPD7225 Datasheet HTML 25Page - Renesas Technology Corp Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 50 page
background image
Data Sheet S14308EJ6V1DS
19
µµµµPD7225
4.
LCD DRIVE POWER SUPPLY PIN VOLTAGE SETTING
The bias method for setting the LCD drive power supply pin allows a different voltage to be supplied to each pin.
Figure 4-1. Voltage Setting
VLC1
VLC2
VLC3
Static
VDD
VDD
− VLCD
VDD
− VLCD
1/2 bias
VDD
−
VLCD
VDD
−
VLCD
VDD
− VLCD
1/3 bias
VDD
−
VLCD
VDD
−
VLCD
VDD
− VLCD
Remark
VLCD : LCD voltage
The following shows a circuit example which supplies voltages between VDD and VSS as the LCD drive reference
voltage.
(1) Static
VLCD
R1 =
× R2
VDD
− VLCD
• VLCD: LCD drive voltage
• R2 is used for contrast adjustment.
(2) Divide-by-2, -3 time division (1/2 bias)
VLCD
R1 =
× R2
2(VDD
− VLCD)
1
2
1
3
1
2
1
3
VDD
VDD
VLC1
VLC2
VLC3
R1
R2
VSS
GND
PD7225
µ
VDD
VDD
VLC1
VLC2
VLC3
R1
R1
R2
VSS
GND
PD7225
µ



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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