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PDF IZ6450A Data sheet ( Hoja de datos )
| Número de pieza | IZ6450A | |
| Descripción | DOT MATRIX LCD DRIVER | |
| Fabricantes | Integral | |
| Logotipo |  |
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DESCRIPTION
IZ6450A, IZ6451A
DOT MATRIX LCD DRIVER
IZ6450/IZ6451 are dot matrix LCD (Liquid Crystal Display) drivers, designed for the dis-
play of characters and graphics.
The drivers generate LCD drive signals derived from bit mapped data stored in an internal
RAM.
Design of ICs driver provides very low power dissipation at a wide range of operating volt-
ages.
These features give the designer a flexible means of implementing small to medium size
LCD displays for compact, low power systems.
IZ6450A drive 16 lines of 61 characters each.
IZ6451A operates only 80 columns LCD and works under control of IZ6450A.
Two IZ6450A can be used for control of LCD with rows number more than16 (but not
more than 32). Thus one IC operates as "Master" and the second as "Slave".
One IZ6450A operates as “Master”, and one or few IZ6450A or IZ6451A is used in “Slave”
mode for control of LCD with number of columns more than 61
IZ6450A operates on frequency 18kHz as from the built in RC-generator (external
resistor), and from external clocking.
IZ6451A operates on frequency 18kHz from external clocking.
The most similar on parameters functional equivalents are NJU6450A, NJU6451A
(New Japan Radio Co).
Microcircuits support the data exchange protocol with MPU family 80XXX (Intel),
and MPU family 68XXX (Motorola) to receive the information to display on LCD from
MPU.
Microcircuits are used in calculators, pagers, notebooks, translators and other
products, demanding simultaneous displaying of graphic and any fonts text information on
LCD.
Ver.00/19.01.2009
1 IZ6450-TSe
447488
1 page  
IZ6450A, IZ6451A
Table 3 Instruction set
Instruction RD WR AO
Display
100
ON/OFF
Display start
line 1 0 0
Page address
set 1 0 0
Column ad-
dress set
100
Status read 0 1 0
Write display
data
1
0
1
Read display
data
0
1
1
ADC
100
Static
100
Duty select
100
Read modify
write
1
0
0
End 1 0 0
Reset
100
Instruction code
D7 D6 D5 D4 D3 D2 D1 D0
Function
Switches ON/OFF input og RAMdata
1 0 1 0 1 1 1 1/0 for LCD columns control
1
1
0
Start address of RAM
line (0~31)
Sets RAM address of line correspond-
ing to data indicated at the display’s
top line (COM0)
Page Sets the page of the Display RAM
1 0 1 1 1 0 address
(0~3)
0 Address of column RAM (0~79) Sets the column of the Display RAM
Reads LCD status: .
Bit of status word:
BUSY 1: “Working” state,
0: “Ready” state;
ADC 1:RAM columns reading from
0 0 0 0 right to left (direct);
0: RAM columns reading from
left to right (reverse)
ON/OFF 1: “Display” ON;
0: “Display” OFF
RESET 1: driver reset processed
Data being written
Data writing down RAM column ad-
to RAM
dress is incre-
Data being read
Data reading out mented
of RAM
1: reading RAM column right to left
1
0
1
0
0
0
0
0/1
(direct);
0: RAM columns reading from left to
right (reverse)
1
0
1
0
0
1
0
0/1
1: Static parameter control mode;
0: Operating (normal) mode
1
0
1
0
1
0
0
0/1
Duty factor select mode:
1: 1/32 duty, 0: 1/16 duty
1
1
1
0
0
0
0
0
RAM column address is incremented
only when display data is written
1 1 1 0 1 1 1 0 Stop “ Read Modify Write” mode
1 1 1 0 0 0 1 0 Reset LCD driver to initial set
Ver.00/19.01.2009
5 IZ6450-TSe
447488
5 Page 
Table 5 continued
Contact
pad num-
ber
71
72
73
74
75
76
Symbol
SEG1
SEG0
А0
CS
CL
E(RD)
77 R/W(WR)
78 GND
79 DB0
80 DB1
81 DB2
82 DB3
83 DB4
84 DB5
85 DB6
86 DB7
87 VCC
88 RES
89 FR
90 V5
91 V3
92 V2
93 SEG79
94 SEG78
95 SEG77
96 SEG76
97 SEG75
98 SEG74
99 SEG73
100 SEG72
IZ6450A, IZ6451A
Description
LCD column control output
LCD column control output
Data/instructions display select input
Chip select input
Clock input
Read/Write Enable input if a 68-port MPU is
connected
(Read signal input if an 80-port MPU is con-
nected)
Data Read/Write signal input if a 68-port MPU is
connected
(Write signal input if an 80-port MPU is con-
nected)
Common pin
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Supply voltage pin
Reset & interface select input
LCD frame signal input
LCD driving power supply pin.
LCD driving power supply pin.
LCD driving power supply pin.
LCD column control output
LCD column control output
LCD column control output
LCD column control output
LCD column control output
LCD column control output
LCD column control output
LCD column control output
Ver.00/19.01.2009
11 IZ6450-TSe
447488
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet IZ6450A.PDF ] | |
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