Lcd
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The Concise LCD Data Sheet.
http://www.senet.com.au/~cpeacock
Instruction NOP Clear Display Cursor Home
RS RW D7 D6 D5 D4 D3 D2 D1 D0 Description 0 0 0 0 0 0 0 0 0 0 No Operation 0 0 0 0 0 0 0 0 0 1 Clears display & sets address counter to zero. 0 0 0 0 0 0 0 0 1 0 Sets address counter to zero, returns shifted display to original position. DDRAM contents remains unchanged. Entry Mode Set 0 0 0 0 0 0 0 1 I/D S Sets cursor move direction, and specifies automatic shift. Display Control 0 0 0 0 0 0 1 D C B Turns display (D), cursor on/off (C) or cursor blinking(B). Cursor/display shift 0 0 0 0 0 1 S/C R/L 0 0 Moves cursor and shift display. DDRAM contents remains unchanged. Function Set 0 0 0 0 1 DL N M G 0 Sets interface data width(DL), number of display lines (N,M) and voltage generator control (G). Set CGRAM Addr 0 0 0 1 Character Generator RAM Sets CGRAM Address Set DDRAM Addr 0 0 1 Display Data RAM Address Sets DDRAM Address Busy Flag & Addr 0 1 BF Address Counter Reads Busy Flag & Address Counter Read Data 1 0 Read Data Reads data from CGRAM or DDRAM Write Data 1 1 Write Data Writes data from CGRAM or DDRAM
Clocks 0 165 3
3 3 3 3 3 3 0 3 3
Write Cycle
RS tas
tah
R/W tw
tf
Enable tds
tr
th
Valid Data
Data
tc
(2)
Parameter Enable Cycle Time Enable Pulse Width (High) Enable Rise/Fall Time Address Setup Time Address Hold Time Data Setup Time Data Hold Time
Symbol
tc tw tr,tf tas tah tds th
Min (1) 500
Typ (1) -
Max (1) -
Unit ns
230
-
-
ns
-
-
20
ns
40
-
-
ns
10
-
-
ns
80
-
10
-
ns -
ns
Note 1 The above specifications are a indication only. Timing will vary from manufacturer to manufacturer.
Note 2 A 2 line by 16 Character LCD Module is Pictured. Data will work on most 1 line x 16 character, 1 line x 20 character, 2 line x 16 character, 2 line x 20 character, 4 lines x 20 character, 2 lines x 40 character etc. modules compatible with the HD44780 LCD Module.
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Name Vss Vdd Vo RS R/W E D0 D1 D2 D3 D4 D5 D6 D7
I/O Power Power Analog Input Input Input I/O I/O I/O I/O I/O I/O I/O I/O
Description GND +5v Contrast Control Register Select Read/Write Enable (Strobe) Data LSB Data Data Data Data Data Data Data MSB
http://www.senet.com.au/~cpeacock
Instruction NOP Clear Display Cursor Home
RS RW D7 D6 D5 D4 D3 D2 D1 D0 Description 0 0 0 0 0 0 0 0 0 0 No Operation 0 0 0 0 0 0 0 0 0 1 Clears display & sets address counter to zero. 0 0 0 0 0 0 0 0 1 0 Sets address counter to zero, returns shifted display to original position. DDRAM contents remains unchanged. Entry Mode Set 0 0 0 0 0 0 0 1 I/D S Sets cursor move direction, and specifies automatic shift. Display Control 0 0 0 0 0 0 1 D C B Turns display (D), cursor on/off (C) or cursor blinking(B). Cursor/display shift 0 0 0 0 0 1 S/C R/L 0 0 Moves cursor and shift display. DDRAM contents remains unchanged. Function Set 0 0 0 0 1 DL N M G 0 Sets interface data width(DL), number of display lines (N,M) and voltage generator control (G). Set CGRAM Addr 0 0 0 1 Character Generator RAM Sets CGRAM Address Set DDRAM Addr 0 0 1 Display Data RAM Address Sets DDRAM Address Busy Flag & Addr 0 1 BF Address Counter Reads Busy Flag & Address Counter Read Data 1 0 Read Data Reads data from CGRAM or DDRAM Write Data 1 1 Write Data Writes data from CGRAM or DDRAM
Clocks 0 165 3
3 3 3 3 3 3 0 3 3
Write Cycle
RS tas
tah
R/W tw
tf
Enable tds
tr
th
Valid Data
Data
tc
(2)
Parameter Enable Cycle Time Enable Pulse Width (High) Enable Rise/Fall Time Address Setup Time Address Hold Time Data Setup Time Data Hold Time
Symbol
tc tw tr,tf tas tah tds th
Min (1) 500
Typ (1) -
Max (1) -
Unit ns
230
-
-
ns
-
-
20
ns
40
-
-
ns
10
-
-
ns
80
-
10
-
ns -
ns
Note 1 The above specifications are a indication only. Timing will vary from manufacturer to manufacturer.
Note 2 A 2 line by 16 Character LCD Module is Pictured. Data will work on most 1 line x 16 character, 1 line x 20 character, 2 line x 16 character, 2 line x 20 character, 4 lines x 20 character, 2 lines x 40 character etc. modules compatible with the HD44780 LCD Module.
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Name Vss Vdd Vo RS R/W E D0 D1 D2 D3 D4 D5 D6 D7
I/O Power Power Analog Input Input Input I/O I/O I/O I/O I/O I/O I/O I/O
Description GND +5v Contrast Control Register Select Read/Write Enable (Strobe) Data LSB Data Data Data Data Data Data Data MSB
