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  • Character LCD Display 12x2
VC1221

1.5x8 dots with cursor
2.Built-in controller KS0066 or equivalent
3.+ 5V single power supply
4.1/16 duty cycle
5.LED B/L pins: A/K, or 1/2, or Pin 15
6.Backlight: LED B/L(edge)

Item Standard Value Unit
Module Dimension 55.7 x 32.0 mm
Viewing Area 46.7 x 17.5 mm
Active Area 37.85 x 11.7 mm
Dot Size 0.45 x 0.6 mm
Character Size 2.65 x 5.5 mm
Item Symbol Condition Typical Value Unit
Input Voltage VDD 25 ℃ 5.0 V
Supply Current IDD VDD= +5V 1.5 mA
LCD Driving Voltage VDD - Vo 25 ℃ 4.0 V
LED Forward Voltage Vf 25 ℃ 4.1 V
LED Forward Current If 25 ℃ 40 mA
Pin Symbol Function
1 VSS GND
2 VDD +5V
3 VO Contrast Adjustment
4 RS H:Data L:Instruction
5 R/W H/L read/write signal
6 E H→L enable signal
7~14 DB0~DB7 H/L data bus line
15 A Power supply for B/L (+)
1 2 3 4 5 6 7 8 9 10 11 12
00 01 02 03 04 05 06 07 08 09 0A 0B
40 41 42 43 44 45 46 47 48 49 4A 4B

VC1221

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