|
|
LD1207LのメーカーはIK Semiconductorです、この部品の機能は「12/9 Segment Output Lines」です。 |
部品番号 | LD1207L |
| |
部品説明 | 12/9 Segment Output Lines | ||
メーカ | IK Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとLD1207Lダウンロード(pdfファイル)リンクがあります。 Total 17 pages
TECHNICAL DATA
LD1207L
.comDESCRIPTION
t4UThe LD1207L is specifically designed for LED and LED DISPLAY
ederivers.
eThe LD1207L have 12/9 segment output lines, 7 to 4 grid output lines,
hone display memory, control circuit and 3 line serial data interface.
SThose functions are all incorporated into a single chip to build a highly
tareliable peripheral device for a single chip microcomputer. It is very
aconvenience to control for numeric display.
.DLD1207L’s pin assignments and application circuit are optimized for
weasy PCB Layout and cost saving advantages.
ww U.comFEATURES
PIN CONNECTION
t4· CMOS Technology
e· Segment output line selection by command : 12 ~ 9
e· Grid output line selection by command : 7 ~ 4
· Operation voltage : 3~5V
h· Low Power Consumption
· 8-Step Dimming control by command
S· Serial Interface for Clock, Data Input, Strobe Pins
ta· 24-pin, SOP Package
.DaAPPLICATION
OSC
DIN
CLK
STB
VDD
SG1
SG2
SG3
SG4
SG5
SG6
SG7
1
2
3
4
5
6
7
8
9
10
11
12
24 GND
23 GR1
22 GR2
21 GR3
20 GR4
19 GND
18 VDD
17 SG12/GR5
16 SG11/GR6
15 SG10/GR7
14 SG9
13 SG8
www www.DataSheet4U.com· Segment LED display : VCR, DVD, MWO
1
1 Page TECHNICAL DATA
ABSOLUTE MAXIMUM RATINGS
(Unless otherwise stated, Ta=25℃, GND=0V)
Parameter
Symbol
Supply Voltage
VDD
Logic Input Voltage
VI
Driver Output Current/Pin
IOLGR
IOHSG
Maximum Driver Output Current/Total
ITOTAL
LD1207L
Rating
-0.5 to +7.0
-0.5 to VDD+0.5
+250
-50
400
Units
V
V
mA
mA
mA
RECOMMENDED OPERATING RANGE
(Unless otherwise stated, Ta= -20 to +70℃, GND=0V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Logic Supply Voltage VDD 3.0 - 5.5 V
Dynamic Current (see Note)
IDDdyn
.
.
5 mA
High-Level Input Voltage
VIH 0.8VDD
.
VDD
V
Low-Level Input Voltage
VIL
0
.
0.2 VDD
V
Note : Test Condition : Set Display Control Commands = 80H (Display Turn OFF State)
3
3Pages TECHNICAL DATA
LD1207L
FUNCTIONAL DESCRIPTION
Commands
A command is the first byte (b0 to b7) inputted to LD1207L 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
LD1207L 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 LD1207L 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
6
6 Page | |||
ページ | 合計 : 17 ページ | ||
|
PDF ダウンロード | [ LD1207L データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
LD1207 | Led And Led Display Driver | Integral Korea |
LD1207 | 12/9 Segment Output Lines | IK Semiconductor |
LD1207L | 12/9 Segment Output Lines | IK Semiconductor |