ChipFind - документация

Электронный компонент: IZ44780-XX

Скачать:  PDF   ZIP

Document Outline

TECHNICAL DATA
IN44780
DOT MATRIX LIQUID CRYSTAL DISPLAY
CONTROLLER & DRIVER
FEATURES
Internal Memory
-
Character Generator ROM: 8320 bits
-
Character Generator RAM: 512 bit
-
Display Data RAM: 80 x 8 bits for 80 digits
Internal automatic reset circuit at power ON
Internal oscillation circuit
Power Supply Voltage: +5V 10%
LCD Driving Voltage for display: 0 ~ -5V(V
5
)
Duty factor selection (sselected by programs)
1/8 duty: 5 x 7 dots format 1 line,
1/11 duty: 5 x 10 dots format 1 line
1/16 duty: 5 x 7 dots format 2 line
Bare chip available
Pin-to-Pin replacement for KS0066, HD44780,
SED1278
FUNCTION
Character type dot matrix LCD driver & controller
Internal driver: 16 common and 40 segment signal output
Display character format: 5 x 7 dots + cursor,
5 x 10 dots + cursor
Easy interface with a 4-bit or 8-bit MPU
Display character pattern:
5 x 7 dots format: 192 kinds, 5 x 10 dots format: 32 kinds
The special character pattern can be programmable by
Character Generator RAM directly
A customer character pattern can be programmable by mask
option
Wide range of instruction function:
Display clear, Cursor home, Display ON/OFF, Display shift
Cursor ON/OFF, Display character blink, Cursor shift
DESCRIPTION
The IZ44780 is a dot matrix liquid crystal display controller & driver LSI that displays alphanumerics,
characters and symbols.
It drives dot matrix LCD under microcomputer control. All functions needed for dot matrix LCD drive are internally
provided
on one chip.
ODERING INFORMATION
Type CGROM
IZ44780 - 00
English
Numberal
Russian
IZ44780 - 01
English
Numberal
Japanese
IZ44780 - XX
Custom font (XX - ROM code)

ABSOLUTE MAXIMUM RATINGS
Characteristic Symbol
Value
Unit
Power Supply Voltage
V
DD
- 0.3 ~ 7.0
V
Driver Supply Voltage
V
1
~ V
5
V
DD
- 13.5 ~ V
DD
+ 0.3
V
Input Voltage
V
I
-0.3 ~V
DD
+ 0.3
V
Operating Temperature
T
a
- 20 ~ + 75
o
C
Storage Temperature
T
stg
- 55 ~ + 125
o
C
Notes: Must keep the relation of V
DD
V
1
V
2
V
3
V
4
V
5
1
IZ44780
BLOCK DIAGRAM
Par allel/ Ser ial
Data conversion
Circuit
Char acter
Gener ator
ROM
8320 bits
Char acter
Gener ator
RAM
512 bits
Cursor
Blink
Control
Circuit
Display
Data RAM
80 x 8 bits
D
Timing
Gener ation
Circuit
16 - bit
Shift
Register
Common
Signal
Driver
Data
Register
Instruction
Register
Instruction
Decoder
Address
Counter
I/ O
Buffer
Busy
Flag
V 1
V 4
V 5
V 3
V 2
Power
supply
for
LCD
Drive
OSC1
OSC2
V
SS
V
DD
E
RS
R/ W
DB ~DB
0
3
DB ~DB
4
7
4
5
5
4
8
8
8
8
7
7
7
7
16
16
7
40 - bit
Shif t
Regist er
40 - bit
Lat ch
Cir cuit
Segment
Sign al
Dr iver
40
40
40
7
8
8
CLK1
CLK2
M
COM1
to
COM16
SEG1
to
SEG40
2
IZ44780




ELECTRICAL CHARACTERISTICS
(Ta = 25
o
C, V
DD
= +5V, V
SS
= 0V unless otherwise specified)
Characteristic
Symbol
Test Condition
Applicable
Terminals
Min
Typ
Max
Unit
Operating Voltage
V
DD
4.5
5.5
V
Operating Current (*1)
I
DD
Internal oscillation
or external clock
f
OSC
= 270KHz
0.35
0.6
HIGH Input Voltage
V
IH
E,
DB
0
~ DB
7
,
R/W, RS
2.2 V
DD
V
OSC1
V
DD
-1.0
V
DD
LOW Input Voltage
V
IL
E,
DB
0
~ DB
7
,
R/W, RS
-0.3 0.6 V
OSC1
-0.2
1.0
HIGH Output Voltage
V
OH
I
OH
= -0.205 mA
DB
0
~ DB
7
2.4 V
I
OH
= -40
A
CLK1, CLK2, M, D 0.9V
DD
LOW Output Voltage
V
OL
I
OL
= 1.2mA
DB
0
~ DB
7
0.4
V
I
OL
= 40
A
CLK1, CLK2, M, D
0.1V
DD
Driver Voltage
Descending
V
COM
I
O
=
0.1mA
COM1 ~ COM16
1.0
V
V
SEG
SEG1 ~ SEG40
1.0
Input Leakage Current
I
LKG
V
IN
=0V ~ V
DD
E -1
1
A
Input LOW Current
I
IL
V
CC
= 5V (test pull
up R)
RS, R/W, DB
0
~ DB
7
-50 -125
-250
A
Frequency(
*1)
f
EC
125
250
350
KHz
External Duty
DUTY
OSC1
46
50 55
%
Clock Rise
time t
R
0.2
s
Fall
time
t
F
0.2
s
Internal Clock
Frequency(*1)
f
OSC1
Rf
= 91K
2%
OSC1, OSC2
190
270
350
KHz
Ceramic Resonator
Oscillation Frequency
(*1)
f
OSC2
245
250
255
LCD Driving Voltage
(*2)
V
LCD1
V
DD
- V
5
1/5 bias
V
1
~ V
5
4.6
10.0
V
V
LCD2
1/4
bias
3.0 10.0
Notes: *1). Oscillation circuit
3
IZ44780






Resistor circuit
External clock circuit
OSC1
Rf
Rf: 91k + 2%
OSC2
OSC1
OSC2
open
Frequency input

*2). Input the voltage listed in table below to V
1
~ V
5
Duty 1/8,
1/11
1/16
Bias
Power supply
1/4 1/5
V
1
V
DD
- V
LCD
/4 V
DD
- V
LCD
/5
V
2
V
DD
- V
LCD
/2 V
DD
- 2V
LCD
/5
V
3
V
DD
- V
LCD
/2 V
DD
- 3V
LCD
/5
V
4
V
DD
- 3V
LCD
/4 V
DD
- 4V
LCD
/5
V
5
V
DD
- V
LCD
V
DD
- V
LCD
*V
LCD
is the LCD driving voltage, refer to the initial set of the instruction code.


AC CHARACTERISTICS (V
DD
= 5V, V
SS
= 0V, Ta = 25
o
C)
(1)
Write mode (Writing data from MPU to IZ44780)
Characteristic
Symbol
Test pin
Min
Typ
Max
Unit
E Cycle Time
t
C
E 500
ns
E Rise Time
t
R
E
25
ns
E Fall Time
t
F
E
25
ns
E Pulse Width (High, Low)
t
W
E 220
ns
R/W and RS Set-up Time
t
SU1
R/W, RS
40
ns
R/W and RS Hold Time
t
H1
R/W, RS
10
ns
Data Set-up Time
t
SU2
DB
0
~ DB
7
60
ns
Data Hold Time
t
H2
DB
0
~ DB
7
10
ns
4
IZ44780
RS
R/ W
E
DB ~ DB
0
7
V
IH1
V
IH1
V
IH1
V
IH1
V
IL1
V
IL1
V
IL1
V
IL1
V
IL1
V
IL1
V
IL1
t
SU1
t
SU2
t
W
t
H1
t
H1
t
H2
t
R
t
C
Valid Data


(2) Read mode (Reading data from IZ44780 to MPU)
Characteristic
Symbol
Test pin
Min
Typ
Max
Unit
E Cycle Time
t
C
E 500
ns
E Rise Time
t
R
E
25
ns
E Fall Time
t
F
E
25
ns
E Pulse Width (High, Low)
t
W
E 220
ns
R/W and RS Set-up Time
t
SU1
R/W, RS
40
ns
R/W and RS Hold Time
t
H1
R/W, RS
10
ns
Data Output Delay Time
t
D
DB
0
~ DB
7
120
ns
Data Hold Time
t
H2
DB
0
~ DB
7
20
ns
5