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부품번호 | SC75823A 기능 |
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기능 | 1/3 DUTY GENERAL-PURPOSE LCD DRIVER | ||
제조업체 | Silan Microelectronics | ||
로고 | |||
Silan
Semiconductors
SC75823
1/3 DUTY GENERAL-PURPOSE LCD
DRIVER
DESCRIPTION
The SC75823 is a general-purpose LCD driver that can be used
for frequency display in microprocessor-controlled radio receives
and in other display applications. In addition to being able to directly
drive up to 156 LCD segments.
QFP-64-14x14-0.8
FEATURES
• Supports both 1/3 duty 1/2 bias and 1/3 duty 1/3 bias LCD
drive of up to 156 segments under serial data control.
• Serial data input supports CCB format communication with the
system controller.
LQFP-64-10 x 10-0.5
• Serial data control of the power-saving mode based backup
function and all the segments forced off function.
• High generality since display data is displayed directly without ORDERING INFORMATION
decoder intervention.
Device
Package
• The INH pin can force the display to the off state.
SC75823A LQFP-64-10 X 10-0.5
• The LCD drive bias voltage can be provided internally or SC75823B QFP-64-14 X 14-0.8
externally.
• Power supply voltage: 4.5 to 6.0V
BLOCK DIAGRAM
COM1 COM2 COM3
S52 S51
VDD1
VDD2
INH
Common Driver
OSC
Clock
Generator
Latch & Driver
Shift Register
Address
Detector
S1
DI CL CE
VDD VSS
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.03.04
1
Silan
Semiconductors
SC75823
(Continued)
Characteristics
Intermediate Level Voltage*
Supply Current
Symbol
Test Condition
Min.
1/3 bias, COM1 to COM3;
VMID3
1/3VDD±1.0
IO=±100µA
1/3 bias, S1 to S52;
VMID4
2/3VDD±1.0
IO=±20µA
1/3 bias, S1 to S52;
VMID5
1/3VDD±1.0
IO=±20µA
IDD1 Power saving mode
IDD2 f=38kHz, 1/2 bias, VDD=5V
IDD3 f=38kHz, 1/3 bias, VDD=5V
IDD2 f=38kHz, 1/2 bias, VDD=6V
IDD3 f=38kHz, 1/3 bias, VDD=8V
Typ.
400
300
650
580
Max.
5
800
600
1300
1200
Unit
V
V
V
µA
µA
µA
µA
µA
Note: * Except the bias voltage generation divider resistors that are built into VDD1 and VDD2.(see figure 1)
Figure 1
VDD
VDD1
VDD2
To the common segment driver
Except these resistors
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.03.04
4
4페이지 Silan
Semiconductors
SC75823
2. When CL is stopped at high level
CE
CL
DI
1000001
0 D1 D2 D3
D154 D155 D156 DR SC BU *
B0 B1 B2 B3 A0 A1 A2
A3
CCB address 8 bits
Display data 156 bits
Control data 4 bits
*: don't care
• CCB address…….41H
• D1 to D156……….Display data
Dn (n=1 to 156)=1……..Display on
Dn (n=1 to 156)=0……..Display off
• DR…………………1/2-bias drive or 1/3-bias drive switching control data
• SC…………………Segments on/off control data
• BU…………………Normal mode/power-saving mode control data
Serial data transfer examples
• When 63 segments are used
63 bits is display data (D94 to D156) must be sent.
8 bits
10000010
B0 B1 B2 B3 A0 A1 A2 A3
D94 D95 D96
67 bits
D154 D155 D156 DR SC SU *
*: don't care
Control data function
1. DR: 1/2-bias drive or 1/3-bias drive switching control data
This control data selects either 1/2-bias drive or 1/3-bias drive.
DR Drive type
0 1/2-bias drive
1 1/3-bias drive
2. SC: segments on/off control data
This control data bit controls the on/off state of the segments.
SC Display state
0 On
1 Off
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.03.04
7
7페이지 | |||
구 성 | 총 16 페이지수 | ||
다운로드 | [ SC75823A.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
SC75823 | 1/3 DUTY GENERAL-PURPOSE LCD DRIVER | Silan Microelectronics |
SC75823A | 1/3 DUTY GENERAL-PURPOSE LCD DRIVER | Silan Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |