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PDF ( 数据手册 , 数据表 ) LD1207L

零件编号 LD1207L
描述 12/9 Segment Output Lines
制造商 IK Semiconductor
LOGO IK Semiconductor LOGO 


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LD1207L 数据手册, 描述, 功能
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
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LD1207L pdf, 数据表
TECHNICAL DATA
LD1207L
COMMAND 3 : ADDRESS SETTING COMMANDS
Address Setting Commands are used to set the address of the display memory. The address is
considered valid if it has a value of “00H” to 0DH”. If the address is set to 0EH or higher, the
data is ignored until a valid address is set. When power is turned ON, the address is set at “00H”.
Please refer to the diagram below.
MSB
LSB
1 1 - - b3 b2 b1 b0
Don’t Care
Address : 00H to 0DH
Display Mode and RAM Address
Data transmitted from an external device to LD1207L via the serial interface are stored in the
Display RAM and are assigned addresses. The RAM Addresses of LD1207L are given below in
8 bit unit.
SG1
SG4 SG5
SG8 SG9
SG12
00HL
02HL
04HL
06HL
08HL
0AHL
0CHL
00HU
02HU
04HU
06HU
08HU
0AHU
0CHU
01HL
03HL
05HL
07HL
09HL
0BHL
0DHL
b0
b3 b4
b7
DIG1
DIG2
DIG3
DIG4
DIG5
DIG6
DIG7
xxHL
Lower 4 bits
xxHU
Higher 4 bits
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LD1207L equivalent, schematic
TECHNICAL DATA
LD1207L
APPLICATION CIRCUIT
+5V
0.1pF
MCU
51K
S1
S2
S3
S4
S5
S6
S7
OSC
DIN
CLK
STB
VDD
SG1
SG2
SG3
SG4
SG5
SG6
SG7
GND
GR1
GR2
GR3
GR4
GND
VDD
SG12/GR5
SG11/GR6
SG10/GR7
SG9
SG8
G1
G2
G3
G4
S12
S11
S10
S9
S8
+5V
G1 DIGIT1
G2
G3 DIGIT2
DIGIT3
G4
DIGIT4
S1 SEG1
S2 SEG2
S3 SEG3
S4 SEG4
S5 SEG5
S6 SEG6
S7 SEG7
S8
SEG8
S9 SEG9
S10 SEG10
S11 SEG11
S12 SEG12
Note : The capacitor (0.1uF) connected between the GND and VDD Pins must be located as near as
possible to the LD1207L chip.
COMMON CATHODE TYPE LED PANEL
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
a
b
c
d
e
f
g
h
COM/ DIGITAL(GRID)
f
e
a
b
g
c
dh
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