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HC2021系列
 

20x2字符3.3V液晶模块

  HC2021系列
 

1.20*2字符液晶

2.并口通讯,3.3V/5V供电

3.黄绿模式和蓝模式可选

   

型号 规格 模块大小 显示尺寸 控制器 背光 备注 PDF
HC2021系列 20*2 116.0*37.0 82.6*18.4 KS0066 or equivalent LED 字符液晶模块
+ 产品资料

PIN CONNECTIONS
Pin Symbol Level Function
1 VSS 0V GND
2 VDD +5V Power supply for logic
3 VO - Operating voltage for lcd
4 RS H/L "H" Data,
"L" Instruction code
5 R/W H/L "H" Read, "L" Write
6 E 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 +5V Power supply for LED backlight
16 LEDK 0V
  MECHANICAL DATA
Item Nominal Dimensions Unit
Module Size(W x H x T) 116.0X37.0X12.8 mm
Viewing Area (W x H) 82.6X18.4 mm
Character Size (W x H) 3.20X5.55 mm
Dot Size (W x H) 0.60X0.65 mm
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 -20 70
Storage Temp. TSTG -30 80
ELECTRICAL CHARACTERISTICS (VDD=5.0V, Ta=25℃)
Item Symbol 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 2.4 - VDD V
Output Low Voltage VOL 0 - 0.4 V
Supply Current IDD - 1.5 - mA
LCD Driving Voltage VDD-V0 - 4.7 - V
LED BACKLIGHT SPECIFICATIONS (Ta=25℃)
Item Forward Voltage Forward Current
YELLOW-GREEN 3.1V 30mA
WHITE 3.1V 30mA
NOTES:
1. Built-in controller (KS0066 or Equivalent)
2. LED can be driven by pin15, pin16 or A and K