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PDF LC450029PKB Data sheet ( Hoja de datos )
| Número de pieza | LC450029PKB | |
| Descripción | 1/4 and 1/3-Duty General-Purpose LCD Display Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA1916
LC450029PKB
CMOS IC
1/4 and 1/3-Duty General-Purpose
LCD Display Driver
http://onsemi.com
Overview
The LC450029PKB is 1/4 duty and 1/3 duty general-purpose microcontroller-controlled LCD drivers that can be
used in applications such as frequency display in products with electronic tuning. In addition to being capable to
drive up to 208 segments directly. The internal oscillation circuit helps to reduce the number of external resistors and
capacitors required. The chip shape is slim for COG (Chip-On-Glass) implementation. The operating temperature
range is from -40°C to +105°C
Application
• Car or general consumer electronic LCD display equipment.
Features
• Selectable 1/4-duty or 1/3-duty drive by the serial control data
When 1/4-duty: Capable of driving up to 208 segments
When 1/3-duty: Capable of driving up to 159 segments
• 1/3-bias only
• Serial data input supports CCB* format communication with the system controller. (For 5V operation only)
• The power-saving mode is selectable by the serial control data, and supports low power consumption.
• Adjustable the frame frequency of the common and segment output waveforms by the serial control data
• Selectable the internal oscillator operating or external clock operating mode by the serial control data
• High generality, since display data is displayed directly without the intervention of a decoder circuit.
• The INH pad allows all LCD segments to be forced to the off state.
• With a built-in oscillator circuit (External resistors and capacitors are unnecessary.)
• The stability of the LCD bias voltage is high by a built-in LCD bias generator with voltage-follower buffers.
• Shipping form: Chip with Au bumps in tray.
• Allowable operating voltage (VDD, VDDI)
: +4.5V to +6.0V
• Allowable wide operating temperature ranges : -40°C to +105°C
• 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
21611HKIM 20101217-S00007 No.A1916-1/25
1 page  
Block Diagram
LC450029PKB
INH
OSCI
VDD
VSS
VDDI
COMMON
DRIVER
LCD BIAS
GENERATOR
+
-
+
-
CLOCK
GENERATOR
SEGMENT DRIVER & LATCH
CONTROL
REGISTER
SHIFT REGISTER
CCB INTERFACE
REGULATOR
No.A1916-5/25
5 Page 
LC450029PKB
Serial Data Transfer Example
1. 1/4 duty
• When 153 or more segments are used
All 320 bits (include CCB address) of serial data must be sent.
8 bits
72 bits
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2
D47 D48 D49 D50 D51 D52 0 0 0 0 0 0 EXF 0 0 0 DT DN FC0 FC1 FC2 OC SC BU 0 0
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D53 D54
D99 D100 D101 D102 D103 D104 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D105 D106
D151 D152 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D153 D154
D199 D200 D201 D202 D203 D204 D205 D206 D207 D208 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
• When fewer than 153 segments are used
One of 80, 160 and 240 bits of serial data must be sent, depending on the number of segments to be used.
However, the serial data shown below (the D1 to D52 display data, the control data and DD=“00”) must always
be sent.
8 bits
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2
72 bits
D47 D48 D49 D50 D51 D52 0 0 0 0 0 0 EXF 0 0 0 DT DN FC0 FC1 FC2 OC SC BU 0 0
2. 1/3 duty
• When 109 or more segments are used
All 240 bits (include CCB address) of serial data must be sent.
8 bits
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2
72 bits
D47 D48 D49 D50 D51 D52 D53 D54 0 0 0 0 EXF 0 0 0 DT DN FC0 FC1 FC2 OC SC BU 0 0
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D55 D56
D101 D102 D103 D104 D105 D106 D107 D108 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D109 D110
D155 D156 D157 D158 D159 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
• When fewer than 109 segments are used
Either 80 or 160 bits of serial data must be sent, depending on the number of segments to be used.
However, the serial data shown below (the D1 to D54 display data, the control data and DD=“00”) must always
be sent.
8 bits
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2
72 bits
D47 D48 D49 D50 D51 D52 D53 D54 0 0 0 0 EXF 0 0 0 DT DN FC0 FC1 FC2 OC SC BU 0 0
No.A1916-11/25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet LC450029PKB.PDF ] | |
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