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PDF LD1207L Data sheet ( Hoja de datos )
| Número de pieza | LD1207L | |
| Descripción | 12/9 Segment Output Lines | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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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
PIN DESCRIPTION
LD1207L
Pin Name
I/O
OSC
I
DIN
CLK
I
I
STB I
VDD
SG1 to SG9
SG10/GR7 to
SG12/GR5
GND
GR4 to GR1
-
O
O
-
O
Description
Oscillator Input Pin.
A resistor is connected to this pin and GND.
Data Input Pin.
This pin inputs serial data at the rising edge of
the shift clock (staring from the lower bit)
Clock Input Pin.
Rising edge trigger.
Strobe pin for Serial Interface.
The data input after the STB has fallen is
processed as a command.
When this pin is “HIGH”, CLK is ignored.
Power Supply
Segment Output Pins(p-channel, open drain)
Segment Output Pin/ Grid Output Pin
(CMOS Output)
Ground Pin
Grid Output Pins (n-channel, open drain)
Pin No.
1
2
3
4
5,18
6~14
15~17
19,24
20~23
5
5 Page 
TECHNICAL DATA
SWITCHING CHARACTERISTIC WAVEFORM
LD1207L Switching Characteristies Waveform is given below.
fOSC
OSC
STB
CLK
DIN
Gn
Sn
PWCLK PWCLK
tsetup
thold
90%
tTZL
tTZH
10%
10%
90%
tTLZ
tTHZ
LD1207L
PWSTB
tCLK-STB
PW CLK (Clock Pulse Width) ≥400ns
t setup (Data Setup Time) ≥ 100ns
t CLK-STB (Clock - Strobe Time) ≥ 1㎲
t TZH (Rise Time) ≤ 1㎲
t TZL <1㎲
PWSTB (Strobe Pulse Width) ≥ 1㎲
thold (Data Hold Time) ≥ 100ns
t THZ (Fall Time) ≤ 10㎲
fosc = Oscillation Frequency
t TlZ <10㎲
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet LD1207L.PDF ] | |
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