LCD 8*2 Characters- Blue back light

Introduction

Schematic


Specification


Absolute Maximum Ratings

Item Symbol Min Max Unit
Supply Voltage (Logic) VDD-VSS -0.3 7.0 V
Supply Voltage (LCD) VDD-VO -0.3 13.0 V
Input Voltage VI -0.3 VDD+0.3 V
Operating Temp Topr 0 50
Storage Temp. Tstg -10 60

Mechanical Data

Item Nominal Dimensions Unit
Module Size(W×H×T) 58.0×32.0×9.5 mm
Viewing Area(W×H) 36.0×15.0 mm
Character Size(W×H) 2.45×5.0 mm
Dot Size(W×H) 0.45×0.5 mm
Weight g

Electrical Chatacteristics

(VDD=5V±0.25V)

Item Symbol Test Condition Min Typ Max Unit
Input High Voltage VIH - 2.2 - VDD V
Input Low Voltage VIL - -0.3 - 0.6 V
Output High Voltage VOH IOH=0.3mA 2.4 - VDD V
Output Low Voltage VOL IOL=1.2mA 0 - 0.4 V
Supply Current IDD VDD=5.0V - 1.2 3.0 mA
LCD Driving Voltage VDD - VO Ta=25℃ - 5.0 - V

LED Backlight Specifications (Ta=25℃)

Item Symbol Typ Max Unit
Forward Voltage Vf 4.05 4.25 V
Forward Current If 60 - mA
Emission Wave Length λp 568 - nm

Pin definition and Rating


Pin Symbol Level Function
1 VSS - GND(0V)
2 VDD - Supply Voltage for Logic (+5V)
3 VO - LCD Driving Voltage
4 RS H/L H:Data L:Instruction Code
5 R/W H/L H:Read L:Write
6 E H,H->L Enable Signal
7 DB0 H/L Data Bus Line
8 DB1 H/L
9 DB2 H/L
10 DB3 H/L
11 DB4 H/L
12 DB5 H/L
13 DB6 H/L
14 DB7 H/L
15 LEDA - LED Backlight Power Supply
16 LEDK -

Mechanic Dimensions

Resources

Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:

  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.

An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.

Happy hacking