LCD 1602

VSS=0V, VDD=5V, V0=potentio 0-20K to 5V, BLA=5V, BLK=0V
Pinout: VSS,VDD,V0,RS,R/W,E,D0,D1,D2,D3,D4,D5,D6,D7,BLA,BLK
Write/Read:
  RS/RW ..0ns.. EN=1 ..100ns.. Dx ..40ns.. EN=0 ..10ns.. ..1.52ms..

{RS}{R/W}-{D7}D6}{D5}{D4}-{D3}{D2}{D1}{D0}
00-0000-0001 Clear display
  fill space to DDRAM, DDRAM address to 00h
00-0000-001x Return home
  DDRAM address to 00h, cursor to original location
00-0000-01{I/D}{S} Entry mode
  11/01 shift display to left/right
  1x/0x cursor/blink move to right/left, DDRAM address increased/decreased
00-0000-1{D}{C}{B} Display on/off
  D=1/0 display turn on/off
  C=1/0 cursor shown/hidden
  B=1/0 cursor blink/not
00-0001-{S/C}{R/L}xx Cursor or display shift
  00/01 shift cursor to left/right, address counter--/++
  10/11 shift display to left/right, address counter stays
00-001{DL}-{N}{F}xx Function
  DL=1/0 8-bit/4-bit
  {N}{F}=00 1-line display mode, 5x8 dots format
  {N}{F}=01 1-line, 5x8 dots
  {N}{F}=1x 2-line, 5x11 dots
00-01{AC5}{AC4}-{AC3}{AC2}{AC1}{AC} Set CGRAM address
  CGRAM data now available to read/write
00-1{AC6}{AC5}{AC4}-{AC3}{AC2}{AC1}{AC} Set DDRAM address
  DDRAM data now available to read/write
  in 1-line mode, DDRAM address from 00h to 4Fh
  in 2-line mode, DDRAM address from 00h to 27h (line 1), 40h to 67h (line 2)
01-{BF}{AC6}{AC5}{AC4}-{AC3}{AC2}{AC1}{AC} Read busy data and Address counter
  BF=1/0, busy/not
10-{D7}D6}{D5}{D4}-{D3}{D2}{D1}{D0} Write data to DDRAM/CGRAM
11-{D7}D6}{D5}{D4}-{D3}{D2}{D1}{D0} Read data from DDRAM/CGRAM