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LD1207 데이터시트 PDF




IK Semiconductor에서 제조한 전자 부품 LD1207은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 LD1207 자료 제공

부품번호 LD1207 기능
기능 12/9 Segment Output Lines
제조업체 IK Semiconductor
로고 IK Semiconductor 로고


LD1207 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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LD1207 데이터시트, 핀배열, 회로
TECHNICAL DATA
LD1207
.comDESCRIPTION
t4UThe LD1207 is specifically designed for LED and LED DISPLAY derivers.
eThe LD1207 have 12/9 segment output lines, 7 to 4 grid output lines, one display memory, control circuit
eand 3 line serial data interface.
hThis function are all incorporated into a single chip to build a highly reliable peripheral
Sdevice for a single chip microcomputer. It is very convenience to control for numeric display.
taLD1207’s pin assignments and application circuit are optimized for easy PCB Layout and cost saving
aadvantages.
www.D U.comFEATURES
et4· CMOS Technology
e· Segment output line selection by command : 12 ~ 9
h· Grid output line selection by command : 7 ~ 4
· Operation voltage : 5V
S· Low Power Consumption
· 8-Step Dimming control by command
ta· Serial Interface for Clock, Data Input, Strobe Pins
· 24-pin, SOP Package
.DaAPPLICATION
www www.DataSheet4U.com· Segment LED display : VCR, DVD, MWO
1




LD1207 pdf, 반도체, 판매, 대치품
TECHNICAL DATA
LD1207
FUNCTIONAL DESCRIPTION
Commands
A command is the first byte (b0 to b7) inputted to LD1207 via DIN Pin after STB Pin has changed from
”HIGH” to “LOW” state. If for some reason the STB Pin is set “HIGH” while data or commands are
being transmitted, the serial communication is initialized, and the data/commands being transmitted are
considered invalid.
COMMAND 1 : DISPLAYMODE SETTING COMMANDS
LD1207 provides 4 display mode setting as shown in the diagram below: As stated earlier a
command is the first one byte(b0 to b7) transmitted to LD1207 via the DIN Pin when STB is
“LOW”. However, for these commands, Bit No.3 to Bit No.6(b2 to b5) are ignored,
Bit No.7 & Bit No.8(b6 to b7) are given a value of “0”.
The Display Mode Setting Commands determine the number of segments and grids be used
(1/4 to 1/7 duty, 12 to 9 segments). When these commands are executed, the display forcibly
turned off. A display command “ON” must be executed in order to resume display. If the same
mode setting is selected, no command execution is take place, therefore, nothing happens.
When Power is turned “ON”, the 7-Grid, 9-Segment Mode is selected.
MSB
0
0
-
--
LSB
- b1 b0
Don’t Care
Display Mode Settings :
00 : 4 Grids, 12 Segments
01 : 5 Grids, 11 Segments
10 : 6 Grids, 10 Segments
11 : 7 Grids, 9 Segments
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LD1207 전자부품, 판매, 대치품
TECHNICAL DATA
LD1207
COMMAND 4 : DISPLAY CONTROL COMMANDS
The Display Control Commands are used to turn ON or OFF a display. It also used to set the
pulse width. Please refer to the diagram below. When the power is turned ON, a 1/16 pulse
width is selected and the displayed is turned OFF.
MSB
LSB
1 0 - - b3 b2 b1 b0
Don’t Care
Dimming Quantity Settings :
000 : Pulse width = 1/16
001 : Pulse width = 2/16
010 : Pulse width = 4/16
011 : Pulse width = 10/16
100 : Pulse width = 11/16
101 : Pulse width = 12/16
110 : Pulse width = 13/16
111 : Pulse width = 14/16
Display Settings :
0 : Display OFF
1 : Display ON
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