ACM2002C
Description
Ground Supply voltage for logic LCD contrast adjust Register select Read / write Enable Data bit 0 Data bit 1 Data bit 2 Data bit 3 Data bit 4 Data bit 5 Data bit 6 Data bit 7 Anode for LED backlight Cathode for LED backlight
Function 0V +5V By user H: Data; L: Instruction code H: Data read, L: Data write Start signal for data read/write 8-bit interface 8-bit interface 8-bit interface 8-bit interface 4-bit or 8-bit interface 4-bit or 8-bit interface 4-bit or 8-bit interface 4-bit or 8-bit interface Power supply for LED/EL backlights Power supply for LED/EL backlights
AZ DISPLAYS, INC.
6/6/97
ACM2002C SERIES LCD MODULE
6.0 POWER SUPPLY
VDD +5V VDD +5V
VR -5V
..
VSS Wide temp range VR = 10KΩ ~ 20KΩ
Standard temp range VR = 10KΩ ~ 20KΩ
7.0 BLOCK DIAGRAM
1 VSS 2 VDD 3 VO 4 RS 5 R/W 6E 7 DB0 14 DB7
LCD 20 X 2
16 SEG1----------------------SEG100
U1
U2
U3
(15) A (16) K
LED/EL
AZ DISPLAYS, INC.
6/6/97
ACM2002C...
