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PDF LC75879PT Data sheet ( Hoja de datos )
| Número de pieza | LC75879PT | |
| Descripción | General-Purpose LCD Display Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA1687
LC75879PT
CMOS IC
1/4, 1/3-Duty General-Purpose
LCD Display Driver
http://onsemi.com
Overview
The LC75879PT is the 1/4 duty and 1/3 duty general-purpose microprocessor-controlled LCD driver that can be used
in applications such as frequency display in products with electronic tuning.In addition to being able to drive up to
272 segments directly, the LC75879PT can also control up to 8 general-purpose output ports. Because it has the
PWM output of a maximum of 3 ch, the brightness control of the LED backlight of RGB can be done. Incorporation
of an oscillation circuit helps to reduce the number of external resistors and capacitors required.
Features
• Support for 1/4-duty 1/3-bias or 1/3-duty 1/3-bias drive techniques under serial data control.
When 1/4-duty: Capable of driving up to 272 segments
When 1/3-duty: Capable of driving up to 207 segments
• Serial data input supports CCB format communication with the system controller (Support 3.3V and 5V operation).
• Serial data control of the power-saving mode based backup function and the all segments forced off function.
• Serial data control of switching between the segment output port and general-purpose output portfunction.
(Support for up to 8 general-purpose output ports)
• Support for the PWM output function of a maximum of 3ch (It can output from the general-purpose output port).
• Support for clock output function of 1ch (It can output from the general-purpose output port).
• Serial data control of the frame frequency of the common and segment output waveforms.
• Serial data control of switching between the internal oscillator operating mode and external clock operating mode.
• High generality, since display data is displayed directly without the intervention of a decoder circuit.
• Built-in display contrast adjustment circuit.
• The INH pin allows the display to be forced to the off state.
• Incorporation of an oscillator circuit (Incorporation of resistor and capacitor for an oscillation).
• CCB is ON Semiconductor® ’s original format. All addresses are managed
by ON Semiconductor® for this format.
• CCB is a registered trademark of Semiconductor Components Industries, LLC.
Semiconductor Components Industries, LLC, 2013
July, 2013
51910HKIM 20100420-S00013 No.A1687-1/35
1 page  
Package Dimensions
unit : mm (typ)
3290
14.0
12.0
60 41
61 40
LC75879PT
80
1
(1.25)
0.5
21
20
0.2
0.125
SANYO : TQFP80J(12X12)
Pin Assignment
S63
S64
S65
S66
COM1
COM2
COM3
S67/COM4
S68
VDD
VDD1
VDD2
VSS
S69/OSCI
INH
CE
CL
DI
P1/S1
P2/S2
60
61
70
80
1
50
LC75879PT
(TQFP80J)
10
41
40
30
21
20
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
Top view
No.A1687-5/35
5 Page 
(2) When CL is stopped at the low level
LC75879PT
CE
CL
DI 1 0 1 0 0 0 1 0 D1 D2
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 0 0 PS10 PS11 PS2 PS3 PS4 EXF DN OC P0 P1 P2 P3 DT SC BU 0 0
Display data
69 bits
Control data
17 bits
DD
2bits
1 0 1 0 0 0 1 0 D70 D71
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D129 D130 D131 D132 D133 D134 D135 D136 D137 D138 D139 D140 D141 0 0 0 0 PF0 PF1 PF2 PF3 FC0 FC1 FC2 CT0 CT1 CT2 0 1
Display data
72 bits
Control data
14 bits
DD
2bits
1 0 1 0 0 0 1 0 D142 D143
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D201 D202 D203 D204 D205 D206 D207 0 0 W10 W11 W12 W13 W14 W15 W20 W21 W22 W23 W24 W25 W30 W31 W32 W33 W34 W35 1 0
Display data
66 bits
Control data
20 bits
DD
2bits
Note: DD is the direction data.
• CCB address ……………….. “45H”
• D1 to D207 ……………….... Display data
• PS10, PS11, PS2 to PS4 ….... General-purpose output port (P1 to P4) function setting control data
• EXF ………………………... External clock operating frequency setting control data
• DN …………………………. S68 pin and S69/OSCI pin state setting control data
• OC …………………………. Internal oscillator operating mode/external clock operating mode switching control data
• P0 to P3 ……………………. Segment output port/general-purpose output port switching control data
• DT …………………………. 1/4-duty 1/3-bias drive or 1/3-duty 1/3-bias drive switching control data
• SC ………………………….. Segment on/off control data
• BU …………………………. Normal mode/power-saving mode control data
• PF0 to PF3 …………………. PWM output waveform frame frequency setting control data
• FC0 to FC2 ………………… Common/segment output waveform frame frequency setting control data
• CT0 to CT2 ………………… Display contrast setting control data
• W10 to W15, W20 to W25, ... PWM data of the PWM output
W30 to W35
No.A1687-11/35
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LC75879PT.PDF ] | |
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