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KS0074 Schematic ( PDF Datasheet ) - Samsung semiconductor

Teilenummer KS0074
Beschreibung 34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
Hersteller Samsung semiconductor
Logo Samsung semiconductor Logo 




Gesamt 30 Seiten
KS0074 Datasheet, Funktion
KS0074
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
INTRODUCTION
KS0074 is a dot matrix LCD driver & controller LSI which is fabricated by low power CMOS technology.
It can display 1, 2, or 4 lines with 5 x 8 or 6 x 8 dots format.
FUNCTIONS
 Character type dot matrix LCD driver & controller
 Internal driver : 34 common and 80 segment signal output
 Easy interface with 4-bit or 8-bit MPU
 Clock synchronized serial Interface
 5 x 8 dot matrix possible
 6 x 8 dot matrix possible
 Bi-directional shift function
 All character reverse display
 Display shift per line
 Voltage converter for LCD drive voltage : 13 V max (2 times / 3 times)
 Various instruction functions
 Automatic power on reset
FEATURES
 Internal Memory
- Character Generator ROM (CGROM) : 9,600 bits (240 characters x 5 x 8 dot)
- Character Generator RAM (CGRAM) : 64 x 8 bits (8 characters x 5 x 8 dot)
- Segment Icon RAM (SEGRAM) : 16 x 8 bits (96 icons max.)
- Display Data RAM (DDRAM) : 80 x 8 bits (80 characters max.)
 Low power operation
- Power supply voltage range : 2.7  5.5 V (VDD)
- LCD Drive voltage range : 3.0  13.0 V (VDD - V5)
 CMOS process
 Programmable duty cycle : 1/17, 1/33 (refer to Table 1.)
 Internal oscillator with an external resistor
 Low power consumption
 Bare chip available






KS0074 Datasheet, Funktion
KS0074
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
PAD DESCRIPTION
PAD (NO)
INPUT/
OUTPUT
VDD (43)
VSS1,VSS2
-
(49,64)
V1-V5
(71-67)
Vci (61)
Input
SEG1-SEG80
(89-143,
(1-25)
COM0-COM33
(72-88,
26-42)
OSC1,OSC2
(45,44)
C1,C2 (63,62)
Output
Output
Input
(OSC1),
Output
(OSC2)
Input
RESET (46)
IE (48)
Input
Input
V5OUT2(65)
Output
V5OUT3(66)
NAME
DESCRIPTION
for logical circuit(+3V,+5V)
0V(GND)
Power supply Bias voltage level for LCD driving.
Input voltage to the voltage converter to
generate LCD drive voltage(Vci = 1.0 -4.5V).
Segment output Segment signal output for LCD drive.
INTERFACE
Power supply
LCD
Common output Common signal output for LCD drive.
LCD
Oscillator
When use internal oscillator, connect external
Rf resistor.
If external clock is used, connect it to OSC1.
External
resistor/oscillator
(OSC1)
External
To use the voltage converter(2 times /3 times),
capacitance input these pins must be connected to the external
capacitance.
Reset pin Initialized to Low
Select pin
of
instruction
set
Two times
converter
output
Three times
converter
output
When IE = "High", Instruction set is
selected as Table 6.
When IE = "Low", Instruction set is selected as
Table 10.
The value of Vci is converted two times.
To use three times converter, the same
capacitance as that of C1-C2 should be
connected here.
The value of Vci is converted three times.
External
capacitance
-
-
V5
capacitance
V5

6 Page









KS0074 pdf, datenblatt
KS0074
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
2) Display of 6-dot font width character
When this device is used in 6-dot font width mode, SEG79 and SEG80 must be open
c 6-dot 1 line display
In the case of 1 line display with 6-dot font, the address range of DDRAM is 00H-4FH. (Refer to Fig-5)
   
                        
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Fig-5. 1-line X 26ch. display

12 Page





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