S6A0074 Datasheet, PDF (7/68 Pages) Samsung semiconductor – 34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD

34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
S6A0074
PAD DESCRIPTION
Pad (No)
VDD (43)
VSS1, VSS2
(49, 64)
V1 - V5
(71- 67)
Vci (61)
Input/
Output
-
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)
IM (47)
Input
Table 2. Pad Description
Name
Description
Power supply
for logical circuit(+3V,+5V)
0V(GND)
Bias voltage level for LCD driving.
Interface
Power supply
Segment output
Input voltage to the voltage converter
to generate LCD drive voltage
(Vci = 2.5 - 4.5V).
Segment signal output for LCD drive.
LCD
Common output Common signal output for LCD drive.
LCD
Oscillator
External
capacitance input
Reset pin
Select pin of
instruction set
Two times
converter output
Three times
converter output
Interface mode
selection
When use internal oscillator, connect
external Rf resistor.
If external clock is used, connect it to
OSC1.
External
resistor/oscillator
(OSC1)
To use the voltage converter (2 times/3
times), these pins must be connected to
the external capacitance.
External
capacitance
Initialized to Low
-
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.
V5
capacitance
The value of Vci is converted three
V5
times.
Select Interface mode with the MPU.
-
When IM = "Low" : Serial mode,
When IM = "High" : 4-bit/8-bit bus
mode.
7