文档介绍：[1] NHD ‐ 0420DZ ‐ FL ‐ YBW ‐ 3V3 Character Liquid Crystal Display Module NHD ‐? ? Newhaven Display 0420 ‐? ? 4 lines x 20 characters DZ‐? ? Model F‐? ? Transflective L‐? ? Yellow/Green LED Backlight Y‐? ? STN ‐?Yellow/Green B‐? ? 6:00 view W‐? ? Wide Temp. ( ‐ 20°C~+70°C) 3V3 ‐? ? Vdd, Volt backlight pliant Newhaven Display International, Inc. 2511 Technology Drive, Suite 101 Elgin IL, 60124 Ph: 847 ‐ 844 ‐ 8795 Fax: 847 ‐ 844 ‐ 8796 ech@ nhsales@ 芯天下--/ [2] Document Revision History Revision Date Description Changed by 0 10/21/2008 Initial Release ?‐? 1 1/26/2010 User Guide Reformat MC 2 2/25/2010 Updated Mechanical Drawing MC 3 3/19/2010 Mechanical drawing/pin description updated BE 4 1/6/2011 Updated Controller Information JT 5 5/6/2011 Electrical characteristics updated AK Functions and Features ? 4 lines x 20 characters ? Built ‐ in controllers (ST7066U) ?+ Power Supply ? 1/16 duty, 1/5 bias ? pliant 芯天下--/ VS S VDD V0 RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 LED+ LED- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin connections Sy mb ol Pi n NO 1 16 NHD-0420DZ-FL-YBW-3V3 AYLPSID N E V A H W E N Mechanical Drawing 14 - 芯天下--/ [4] Pin Description and Wiring Diagram Pin No. Symbol External Connection Function Description 1 Vss Power Supply Ground 2 VDD Power Supply Supply voltage for logic (+) 3 V0 Power Supply Power supply