HD44780U Hitachi Semiconductor (acquired by Renesas), HD44780U Datasheet - Page 3
![no-image](/images/no-image-200.jpg)
HD44780U
Manufacturer Part Number
HD44780U
Description
Dot Matrix Liquid Crystal Display Controller/driver
Manufacturer
Hitachi Semiconductor (acquired by Renesas)
Datasheet
1.HD44780U.pdf
(60 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD44780UA00FS
Manufacturer:
HITACHI/日立
Quantity:
20 000
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- Download datasheet (390Kb)
HD44780U Block Diagram
RS
R/W
E
DB4 to
DB7
DB0 to
DB3
GND
V
CC
output
buffer
Input/
MPU
inter-
face
Reset
circuit
ACL
8
8
register (IR)
Instruction
Instruction
register
decoder
Busy
Data
(DR)
7
flag
Character
(CGRAM)
generator
64 bytes
OSC1 OSC2
RAM
Address
counter
CPG
5
V1
7
8
V2
Parallel/serial converter
80
data RAM
(DDRAM)
8
(CGROM)
Character
9,920 bits
Display
generator
attribute circuit
V3
ROM
7
8
8
8 bits
5
and
V4
7
register
generator
40-bit
V5
Timing
shift
controller
Cursor
blink
40
and
register
16-bit
40-bit
circuit
latch
shift
LCD drive
Common
Segment
selector
voltage
signal
driver
signal
driver
COM1 to
COM16
SEG1 to
SEG40
CL1
CL2
M
D
HD44780U
169
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