Download Print this page

Hitachi HD44780 Quick Manual

Lcd module.
Hide thumbs
   

Advertisement

LCD module
Hitachi HD44780 controller
Hitachi HD44780 controller
Interface
1
Vss GND
2
VDD Vcc (+5V ± 5%)
3
Vo
Contrast Adjustment
4
RS
Register Select
5
R/W Read / Write
6
E
Enable signal
7-14 DB0-DB7 Data Bus
Quick guide for standard write
Set RS and data
1.
Set E
2.
Wait at least PW
3.
EH
Clear E
4.
Wait t
5.
cycE
(initialization is different!!)
and compatible
Main features
5x8 character dot matrix display
80x8-bit display RAM
64x8-bit character generator RAM
4-bit or 8-bit interface
Timing
min
min
Item
Item
@ 2.7-4.5V @ 4.5-5.5V
PW
450 ns
230 ns
EH
t
1000 ns
500 ns
cycE
t
60 ns
40 ns
AB
t
20 ns
10 ns
AH
t
195 ns
80 ns
DBW
t
10 ns
10 ns
H
t
5 ns
5 ns
DHR
ET-LCD port on ET-BASE AVR
ET-CLCD pin
1
2
3
4
5
signal
GND +Vcc
Vo
RS
R/W
AVR pin
(LCD
PG4
GND
+Vcc
GND
ADJ)
description
description
E hold
E cycle
address setup
address hold
data setup (write)
data hold (write)
data hold (read)
6
7
8
9
10
11
12
13
EN
D0 D1 D2 D3
D4
D5
D6
PD7
PG0 PG1 PG2 PG3
GND
GND
GND
GND
14
D7
1

Advertisement

   Related Manuals for Hitachi HD44780

   Summary of Contents for Hitachi HD44780

  • Page 1

    Main features 5x8 character dot matrix display LCD module 80x8-bit display RAM 64x8-bit character generator RAM Hitachi HD44780 controller Hitachi HD44780 controller 4-bit or 8-bit interface and compatible Interface Timing Vss GND VDD Vcc (+5V ± 5%) Contrast Adjustment Item...

  • Page 2

    4-bit interface Display addressing bus lines DB0-DB3 disabled 4 high order bits followed by 4 low order bits Display position … DDRAM address … (row 1) DDRAM address … (row 2) Instruction Set Designate functions (display format, data length etc.) Set internal RAM address D t t Data transfer...

Comments to this Manuals

Symbols: 0
Latest comments: